Enhancing biological control of corn earworm, Helicoverpa zea and thrips through habitat management and inundative release of Trichogramma pretiosum in corn cropping systems
This study aimed to compare the effectiveness of (I) conservation- and inundative biological control (biocontrol-enhanced treatments) with corn monoculture in terms of improving parasitism of Helicoverpa zea eggs by T. pretiosum, (II) conservation biological control with corn monoculture on predation of H. zea eggs and thrips by Orius spp. Results showed parasitism of H. zea eggs on corn silks was greater in the biocontrol-enhanced treatments compared to the monoculture control, and was greater in the T. pretiosum released treatment compared to the habitat management. Abundance of Orius spp. in relation to prey availabilit...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Evaluation of Streptomyces spp. for effective management of Poria hypolateritia causing red root-rot disease in tea plants
Publication date: October 2015 Source:Biological Control, Volume 89 Author(s): Viswanathan Elango, Kolandasamy Manjukarunambika, Ponnusamy Ponmurugan, Subbagoundar Marimuthu A field study was conducted to evaluate the efficacy of indigenous biocontrol agents such as Streptomyces griseus and Streptomyces lydicus along with Bacillus subtilis and Trichoderma harzianum for controlling red root rot disease of tea plants. In response to biological treatments, disease incidence, green leaf yield, biometric and physiological parameters and organoleptic characters of made tea were assessed. Among the thirteen treatments teste...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

The beneficial root endophyte Piriformospora indica reduces egg density of the soybean cyst nematode
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): Ruchika Bajaj, Weiming Hu, YinYin Huang, Senyu Chen, Ram Prasad, Ajit Varma, Kathryn E. Bushley The soybean cyst nematode (Heterodera glycines) is a plant parasitic nematode that is a major plant pest worldwide and causes severe economic and yield losses. Piriformospora indica, a plant growth promoting fungus isolated from the Thar Deserts of western India, has been shown to protect a wide range of plants from various biotic and abiotic stresses. To evaluate the potential of P. indica to protect soybean (Glycine max) seedlings from dam...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Do leaf domatia mediate intraguild predation and host plant resistance to Oligonychus aceris (Shimer) on Red Sunset Maple (Acer rubrum)?
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): Julia Prado, Adam R. Witte, Steven Frank, Clifford S. Sadof The predatory mites Neoseiulus fallacis (Garman) (Acarina: Phytoseiidae) and Zetzellia mali (Ewing) (Acarina: Stigmaeidae) have the potential to suppress populations of Oligonychus aceris (Shimer) (Acarina: Tetranychidae) on maple cultivars under field conditions. Red Sunset red maples (Acer rubrum) are more resistant to O. aceris than ‘Autumn Blaze’ Freeman maple (Acer×fremanii). Examination of leaves indicated that the mite resistant Red Sunset trees had more ...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Quantification of the potential biocontrol and direct plant growth promotion abilities based on multiple biological traits distinguish different groups of Pseudomonas spp. isolates
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): Betina C. Agaras, Mercedes Scandiani, Alicia Luque, Leticia Fernández, Florencia Farina, Marcelo Carmona, Marcela Gally, Ana Romero, Luis Wall, Claudio Valverde Members of the Pseudomonas genus colonize the rhizosphere of different plant species and display plant-probiotic traits. Therefore, they are interesting candidates for biological agricultural inputs to stimulate plant development and/or promote crop health. We have generated a collection of 19 isolates of pseudomonads obtained from either bulk soil or the rhizosphere ...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Characterization of Trichoderma isolates against Sclerotium rolfsii, the collar rot pathogen of Amorphophallus – A polyphasic approach
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): Neetha Soma John, I.P. Anjanadevi, Vishnu Sukumari Nath, Senthil Alias Sankar, Muthulekshmi Lajapathy Jeeva, K. Susan John, Raj Shekhar Misra The aim of the present study was to characterize ten selected isolates of Trichoderma with differential inhibitory potential over the collar rot pathogen of Amorphophallus, Sclerotium rolfsii. Use of a polyphasic approach which combined the morphological, molecular and biochemical attributes revealed inter specific and intra specific diversity among different isolates. Strains with the best in vi...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Further evaluation of the southern ladybird (Cleobora mellyi) as a biological control agent of the invasive tomato–potato psyllid (Bactericera cockerelli)
We examined important aspects of the southern ladybird’s ecology to obtain further insight into its potential as a biocontrol agent of TPP in potato crops. We found that the southern ladybird did not prefer TPP over either Myzus persicae Sulzer or Macrosiphum euphorbiae Thomas in choice tests, but avoided consumption of greenhouse whitefly, Trialeurodes vaporariorum (Westwood). Ladybird longevity was tested under the conditions of low prey provision, a floral resource (buckwheat), and a combination of buckwheat and low density of TPP, over a 3month period. There was no difference in longevity between ladybirds suppli...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Temporal variability of aphid biological control in contrasting landscape contexts
In this study, the population dynamics of aphids and two groups of predators (coccinellid and carabid beetles) were examined. Insects were sampled in 20 wheat fields, surrounded by structurally simple and complex landscapes in Chilean central valley. Considering the whole sampling period, the diversity of aphids and natural enemies were similar in wheat crops surrounded by both types of landscapes, and the abundance of ladybirds was higher in crops in the complex landscapes. The dynamics of predators was more advanced in complex landscapes than in the simple ones, whereas the dynamics of aphids were similar in both types o...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Sources of volatiles mediating host location behaviour of Glypta haesitator, a larval parasitoid of Cydia nigricana
This study aimed to identify semiochemical sources exploited by G. haesitator females in their search for an oviposition site. Observations in a wind tunnel demonstrated that G. haesitator females were attracted by larval frass of C. nigricana, wing scales of adult pea moths, and herbivore-induced plant volatiles of pea plants (HIPVs). Twenty-four volatiles emitted by those sources were identified, eight of which elicited antennal responses in the female wasps. Behavioural importance of these eight compounds was verified in the wind tunnel testing a synthetic blend for G. haesitator attraction. We also evaluated parasitoid...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Interaction between ants and the Mediterranean fruit fly: New insights for biological control
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): Orlando Campolo, Vincenzo Palmeri, Antonino Malacrinò, Francesca Laudani, Cristina Castracani, Alessandra Mori, Donato A. Grasso During recent years, the positive role of ants as biological control agents in agro-ecosystems has gained growing interest. We investigated the predatory relationship between Ceratitis capitata (Wiedemann) and the ant Tapinoma nigerrimum (Nylander), commonly widespread in the Mediterranean area. Additionally we investigated some bio-ethological aspects of C. capitata larvae that could be relevant timin...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Increase in antioxidant enzyme activity, stress tolerance and biocontrol efficacy of Pichia kudriavzevii with the transition from a yeast-like to biofilm morphology
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): Mengshan Chi, Guangkun Li, Yongsheng Liu, Guoqing Liu, Miao Li, Xiaojing Zhang, Zhiqiang Sun, Yuan Sui, Jia Liu Morphological change, such as from yeast-like to biofilm, has been recently considered to be involved in the mode of action of some antagonistic yeasts used as postharvest biocontrol agents. In the present study, the biocontrol yeast, Pichia kudriavzevii, reversibly shifted from a yeast-like morphology on yeast peptone dextrose (YPD) medium with 2% agar to a biofilm morphology on YPD with 0.3% agar. The tolerance of P. kudr...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Mutualistic and antagonistic trophic interactions in canola: The role of aphids in shaping pest and predator populations
Publication date: December 2015 Source:Biological Control, Volume 91 Author(s): Marissa L. Layman, Jonathan G. Lundgren Aphids have important effects on the abundance and occurrence of tending ants, predators, and pests in agronomic systems, and DNA-based gut content analysis can aid in establishing predator–prey interactions. The purpose of this study was to determine how the presence of aphids, ants, and pest individuals interact within canola (syn. oilseed rape) fields. Using seasonal data from canola fields, the relationships among ants, aphids and pest individuals were determined, along with the use of PCR t...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Effect of Bt broccoli and resistant genotype of Plutella xylostella (Lepidoptera: Plutellidae) on life history and prey acceptance of the predator Coleomegilla maculata (Coleoptera: Coccinellidae)
In this study, we used a unique system of resistant insects, Bt plants and a predator to critically evaluate this issue. The effects of broccoli type (normal or expressing Cry1Ac protein) and insect genotype (susceptible or Cry1Ac-resistant) of Plutella xylostella L. (Lepidoptera: Plutellidae) were examined for their effects on the life history of the predator, Coleomegilla maculata DeGeer (Coleoptera: Coccinellidae) over two generations. Additional behavioral studies were conducted on prey choice. C. maculata could not discriminate between Bt-resistant and susceptible genotypes of P. xylostella, nor between Bt and normal ...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Olfactory response of the omnivorous mirid bug Nesidiocoris tenuis to eggplants infested by prey: Specificity in prey developmental stages and prey species
Publication date: December 2015 Source:Biological Control, Volume 91 Author(s): Hojun Rim, Masayoshi Uefune, Rika Ozawa, Junji Takabayashi We studied olfactory responses of Nesidiocoris tenuis Reuter (Heteroptera: Miridae), an omnivorous mirid bug, to volatiles from eggplants infested by different developmental stages of tobacco cutworms, Spodoptera litura Fabricius (Lepidoptera: Noctuidae) and of female two-spotted spider mites, Tetranychus urticae Koch (Acari: Tetranychidae). We first conducted predation experiments and found that N. tenuis preyed on first and second stadium larvae, but not on third and fourth stad...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

The formicid ant, Plagiolepis sp., as a predator of the coffee twig borer, Xylosandrus compactus
In this study, a formicid ant, Plagiolepis sp., found in X. compactus galleries at the National Coffee Research Institute in 2014, was evaluated for potential to provide biological control of the twig borer. In a Petri dish feeding bioassay, Plagiolepis sp. preyed on all stages of X. compactus except adults within 24h. In field bioassays where Plagiolepis sp. was caged over X. compactus-infested twigs for one month in muslin sleeves, the predator colonized pest galleries and eliminated all life stages of X. compactus as opposed to the untreated control. In a survey of Plagiolepis sp. in 11 districts of eastern, central and...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Beneficial or not? Decoding carnivore roles in plant protection
Publication date: December 2015 Source:Biological Control, Volume 91 Author(s): Shawn A. Steffan, Yoshito Chikaraishi, David R. Horton, Eugene Miliczky, Juan E. Zalapa, Vincent P. Jones, Naohiko Ohkouchi Carnivores indirectly protect plants by reducing herbivory. This important ecosystem service can be undermined, however, as carnivores feed upon fellow carnivores. Such intraguild predation is exceedingly common, yet measurement of the degree to which this occurs has remained elusive due to difficulties in measuring the trophic tendencies of free-roaming animals. Conventional molecular methods, such as bulk-isotop...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Non-target consequences of insecticides used in apple and pear orchards on Forficula auricularia L. (Dermaptera: Forficulidae)
This study investigated the effects of pesticides on nymph, adult female and adult male earwigs in the laboratory and in the field. In the laboratory earwigs exposed to the residues of chlorpyrifos died within 2days. Spinosad was also deemed harmful. Abamectin, chlorantraniliprole and flonicamid were considered earwig safe. Spinosad, spiridoclofen, thiacloprid and methoxyfenozide reduced the growth of nymphs. In a small field plot test on pesticide treated apple trees, earwigs were less sensitive to chlorpyrifos than in laboratory studies and thiacloprid and flonicamid reduced numbers foraging in the trees. The final field...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Evaluation of astigmatid mites as factitious food for rearing four predaceous phytoseiid mites (Acari: Astigmatina; Phytoseiidae)
Publication date: December 2015 Source:Biological Control, Volume 91 Author(s): Marina F.C. Barbosa, Gilberto J. de Moraes Phytoseiids are possibly the most important mites used in biological control and are usually produced using a tritrophic system that, although efficient, is expensive and laborious. Mites of the cohort Astigmatina (Sarcoptiformes) have been used as factitious prey in the mass rearing of phytoseiids and may allow a much simpler production system. This research evaluated the potential of ten Astigmatina species to serve as factitious food sources for Euseius concordis (Chant), Iphiseiodes zuluagai De...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Effect of the interaction between Anticarsia gemmatalis multiple nucleopolyhedrovirus and Epinotia aporema granulovirus, on A. gemmatalis (Lepidoptera: Noctuidae) larvae
Publication date: December 2015 Source:Biological Control, Volume 91 Author(s): Marina E. Biedma, Ricardo Salvador, M. Leticia Ferrelli, Alicia Sciocco-Cap, Víctor Romanowski The bean shoot borer Epinotia aporema Wals. (Lepidoptera: Tortricidae) and the velvet bean caterpillar Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) are key pests of soybean and other legume crops in South America. They are often found simultaneously in certain regions. A. gemmatalis nucleopolyhedrovirus (AgMNPV) is widely used to control A. gemmatalis. More recently, E. aporema granulovirus (EpapGV) has been characterized a...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Eretmocerus warrae prefer to attack mid-aged hosts to gain fitness for both adults and their offspring
Publication date: December 2015 Source:Biological Control, Volume 91 Author(s): Abdul Hanan, Xiong Z. He, Muhammad Shakeel, Munir A. Khetran, Qiao Wang Eretmocerus warrae Nauman and Schmidt (Hymenoptera: Aphelinidae) is an important ecto-endoparasitoid of greenhouse whitefly Trialeurodes vaporariorum (Westwood) (Homoptera: Aleyrodidae). However, prior to the present study little was known about its life history strategies, making it difficult to develop a biological control program with this parasitoid. Using T. vaporariorum as hosts we carried out a series of experiments in the laboratory to determine the host stag...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

An evaluation of insectary plants for management of insect pests in a hydroponic cropping system
Publication date: December 2015 Source:Biological Control, Volume 91 Author(s): Jane Tavares, Koon-Hui Wang, Cerruti R.R. Hooks Eleven plants were evaluated for their potential to serve as insectary plants and attract beneficial arthropods. Buckwheat (Fagopyrum esculentum), cilantro (Coriandrum sativum) and dill (Anethum graveolens) attracted more numerous and diverse beneficial arthropods among the plants evaluated. However, the flowering period of dill was too short and cilantro did not grow well in hydroponic system, thus buckwheat was chosen for further evaluation as part of an insectary plant system (IPS). The ov...
Source: Biological Control - August 17, 2015 Category: Biology Source Type: research

Expression of Paenibacillus polymyxa β-1,3-1,4-glucanase in Streptomyces lydicus A01 improves its biocontrol effect against Botrytis cinerea
Publication date: Available online 25 June 2015 Source:Biological Control Author(s): Jinjin Li , Weicheng Liu , Lijin Luo , Dan Dong , Ting Liu , Taotao Zhang , Caige Lu , Dewen Liu , Dianpeng Zhang , Huiling Wu Streptomyces lydicus strain A01, which can produce natamycin and chitinase, has a significant inhibition effect on gray mold disease caused by Botrytis cinerea. However, it has no detectable glucanase activity. Strain A21 isolated from the snow covered high altitude area in Tibet, China, also has a high antagonistic activity against Botrytis cinerea. It displayed an obvious halo on lichen polysaccharides plates b...
Source: Biological Control - June 26, 2015 Category: Biology Source Type: research

Complementary suppression of aphids by predators and parasitoids
Publication date: Available online 12 June 2015 Source:Biological Control Author(s): Lessando M. Gontijo , Elizabeth H. Beers , William E. Snyder Biocontrol practitioners have long debated the relative merits of specialist parasitoids versus generalist predators as biological control agents. Predators and parasitoids exhibit a broad array of ecological differences that might lead them to play different, and perhaps complementary, roles in pest suppression. However, predators often feed on parasitoids with the potential to disrupt biological control. We compared suppression of the woolly apple aphid (Eriosoma lanigerum) w...
Source: Biological Control - June 12, 2015 Category: Biology Source Type: research

Linking risk and efficacy in biological control host–parasitoid models
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): Joe M. Kaser , George E. Heimpel Exotic invasive arthropods present an increasing threat to native species, ecosystem function, crop production, forests, and other natural resources. Importation (‘classical’) biological control can be a cost-effective tactic for long-term pest management that reduces insecticide use. However, while importation of biological control agents has great potential benefits, it also entails risks to non-target native species. Therefore, candidate biological control agents are studied prior to release to ...
Source: Biological Control - June 12, 2015 Category: Biology Source Type: research

Linking risk and efficacy in biological control host-parasitoid models
Publication date: Available online 3 June 2015 Source:Biological Control Author(s): Joe M. Kaser , George E. Heimpel Exotic invasive arthropods present an increasing threat to native species, ecosystem function, crop production, forests, and other natural resources. Importation (‘classical’) biological control can be a cost-effective tactic for long-term pest management that reduces insecticide use. However, while importation of biological control agents has great potential benefits, it also entails risks to non-target native species. Therefore, candidate biological control agents are studied prior to release...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Pre-release efficacy assessment of the leaf-mining moth Digitivalva delaireae (Lepidoptera: Glyphipterigidae), a potential biological control agent for Cape-ivy, Delairea odorata (Asteraceae), in western North America
Publication date: Available online 3 June 2015 Source:Biological Control Author(s): Angelica M. Reddy , Christopher N. Mehelis The leaf-mining moth Digitivalva delaireae Gaedike & Kruger (Lepidoptera: Glyphipterigidae) is a potential biological control agent for the invasive vine Cape-ivy, Delairea odorata Lemaire (Asteraceae), in western North America, where two morphological varieties (stipulate and exstipulate) of Cape-ivy occur. Two laboratory experiments were conducted to assess 1) the oviposition preference of D. delaireae for either of the two varieties and 2) its impact on plant performance using low and ...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

A single nucleotide polymorphism in the acetylcholinesterase gene of the predatory mite Kampimodromus aberrans (Acari: Phytoseiidae) is associated with chlorpyrifos resistance
Publication date: Available online 4 June 2015 Source:Biological Control Author(s): Stefano Cassanelli , Shakeel Ahmad , Carlo Duso , Paola Tirello , Alberto Pozzebon The predatory mite Kampimodromus aberrans (Oudemans) (Acari: Phytoseiidae) is one of the most important biocontrol agents of herbivorous mites in European perennial crops. The use of pesticides, such as organophosphate insecticides (OPs), is a major threat to the success of biocontrol strategies based on predatory mites in these cropping systems. However, resistance to OPs in K. aberrans has recently been reported. The present study investigated the target ...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Effect of the California red scale Aonidiella aurantii sex pheromone on the natural parasitism by Aphytis spp. in Mediterranean citrus
Publication date: Available online 5 June 2015 Source:Biological Control Author(s): Apostolos Pekas , Vicente Navarro-Llopis , Ferran Garcia-Marí , Jaime Primo , Sandra Vacas Mating disruption has proved successful against California red scale (CRS), Aonidiella aurantii Maskell (Hemiptera: Diaspididae) in Mediterranean citrus. Although mating disruption does not affect negatively the parasitism by Aphytis melinus DeBach (Hymenoptera: Aphelinidae), a CRS parasitoid introduced to the Mediterranean, there is no information regarding its potential effect on the native Aphytis species. In the present study, the effect ...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Beneficial endophytic microorganisms of Brassica – a review
Publication date: Available online 6 June 2015 Source:Biological Control Author(s): Stuart D. Card , David E. Hume , Roodi Davood , Craig R. McGill , James P. Millner , Richard D. Johnson Brassica species display enormous diversity and subsequently provide the widest assortment of products used by man from a single plant genus. Many species are important for agriculture, horticulture, in bioremediation, as medicines, soil conditioners, composting crops, and in the production of edible and industrial oils such as liquid fuels and lubricants. Many wild Brassica relatives possess a number of useful agronomic traits, includi...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Efficacy of Bacillus Subtilis and Trichoderma asperellum against Pythium aphanidermatum in Tomatoes
This study indicates that coating of tomato seeds with B. subtilis and T. asperellum may be useful in the management of damping-off disease. Graphical abstract (Source: Biological Control)
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Control of postharvest black rot caused by Alternaria alternata in strawberries by the combination of Cryptococcus laurentii and Benzo-(1,2,3)-thiadiazole-7-carbothioic acid S-methyl ester
Publication date: Available online 9 June 2015 Source:Biological Control Author(s): Xiaoyun Zhang , Yu Sun , Qiya Yang , Liangliang Chen , Wanhai Li , Hongyin Zhang The biological control activity of Cryptococcus laurentii alone or in combination with Benzo-(1,2,3)-thiadiazole-7-carbothioic acid S-methyl ester (BTH) against postharvest black rot caused by Alternaria alternata in strawberries was investigated. As a stand-alone treatment, C. laurentii significantly reduced the incidence and lesion diameter of black rot in strawberries at 20 °C. The incidence and lesion diameter in strawberries treated with BTH alone wa...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

A Brevibacillus sp. antagonistic to mycotoxigenic Fusarium spp.
Publication date: August 2015 Source:Biological Control, Volume 87 Author(s): Hae Jin Joo , Hwang-Yong Kim , Lee-Han Kim , Soohyung Lee , Jae-Gee Ryu , Theresa Lee Antagonistic microbes were isolated from soils to control mycotoxin contamination of cereals by limiting the growth of mycotoxigenic Fusarium species. In total, 341 bacterial isolates were examined for antifungal activity against eight mycotoxigenic Fusarium species using dual culture assays. The screening identified 11 isolates that inhibited mycelial growth of all Fusarium species tested. The culture filtrates of 2 of the 11 isolates completely inhibited ger...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Evaluation of new fermentation and formulation strategies for a high endophytic establishment of Beauveria bassiana in oilseed rape plants
Publication date: September 2015 Source:Biological Control, Volume 88 Author(s): Rieke Lohse , Desiree Jakobs-Schönwandt , Stefan Vidal , Anant V. Patel Since several years it is known that strains of the entomopathogenic fungus Beauveria bassiana (Balsamo-Crivelli) Vuillemin (Ascomycota: Hypocreales) are able to colonize plants as a true endophyte. However, so far no integrated bioprocess engineering approaches have been published where fermentation and formulation strategies are combined to optimize colonization of oilseed rape plant tissues. We therefore aimed at investigating whether and how blastospore (BS) for...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Three dimensional study of wounded plant roots recruiting entomopathogenic nematodes with Pluronic gel as a medium
This study provides a better understanding of EPN foraging behavior and introduces the Pluronic gel system as a useful medium to study EPN attraction. Graphical abstract (Source: Biological Control)
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Combining an antagonistic yeast with harpin treatment to control postharvest decay of kiwifruit
Publication date: October 2015 Source:Biological Control, Volume 89 Author(s): Jianmin Tang , Yiqing Liu , Honghai Li , Limei Wang , Ke Huang , Zexiong Chen Integrated management, utilizing different non-chemical methods, is an approach to controlling postharvest losses that is being actively investigated. In the present study, the use of an antagonistic yeast, Candida diversa, combined with harpin (a hypersensitive response elicitor) treatment was evaluated for their ability to prevent infection of kiwifruit after they were artificially inoculated with Botrytis cinerea or Penicillium expansum. Natural infection of treat...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

The endophytic fungal entomopathogens Beauveria bassiana and Purpureocillium lilacinum enhance the growth of cultivated cotton (Gossypium hirsutum) and negatively affect survival of the cotton bollworm (Helicoverpa zea)
Publication date: October 2015 Source:Biological Control, Volume 89 Author(s): Diana Castillo Lopez , Gregory A. Sword The effects of two entomopathogenic fungal endophytes, Beauveria bassiana and Purpureocillium lilacinum, were assessed on the growth of cultivated cotton (Gossypium hirsutum) and development of the cotton bollworm (Helicoverpa zea). In two replicate greenhouse trials, cotton plants were inoculated as seed treatments with two concentrations of B. bassiana or P. lilacinum conidia and evaluated for effects on both plant dry biomass, number of nodes and number of developing flowers (squares). We similarly tr...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

An explicit AFLP-based marker for monitoring Fusarium oxysporum f.sp. strigae in tropical soils
Publication date: October 2015 Source:Biological Control, Volume 89 Author(s): Judith Zimmermann , Madelein de Klerk , Mary K. Musyoki , Altus Viljoen , Alan K. Watson , Fen Beed , Markus Gorfer , Georg Cadisch , Frank Rasche Our objective was to develop an explicit AFLP-marker to quantify the abundance of Fusarium oxysporum f.sp. strigae (Fos), an effective soil-borne biocontrol agent (BCA) against the parasitic weed Striga hermonthica, in tropical soils. The specificity of the AFLP-marker to Fos was confirmed on basis of comparison of Fusarium isolates of differing relatedness to Fos. These consisted of 40 Fos, 17 Fusa...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Trichoderma from Aceh Sumatra reduce Phytophthora lesions on pods and cacao seedlings
Publication date: October 2015 Source:Biological Control, Volume 89 Author(s): Rina Sriwati , Rachel L. Melnick , Rizky Muarif , Mary D. Strem , Gary J. Samuels , Bryan A. Bailey The cocoa tree, Theobroma cacao L., suffers large yield losses in Aceh Indonesia due to the disease black pod rot, caused by Phytophthora spp. Despite having the largest area under cacao production in Sumatra, farmers in the Aceh region have low overall production because of losses to insect pests and black pod rot. Trichoderma spp. were isolated from the roots and leaves of cacao trees and screened as potential biological control agents. Isolat...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Phenols enhancement effect of microbial consortium in pea plants restrains Sclerotinia sclerotiorum
Publication date: October 2015 Source:Biological Control, Volume 89 Author(s): Akansha Jain , Akanksha Singh , Surendra Singh , Harikesh Bahadur Singh Microbial interactions occurring in rhizosphere may play important roles in providing protection against phytopathogens. Induction of phenolic compounds and their modulation in leaf and collar region was investigated upon challenge inoculation with Sclerotinia sclerotiorum in pea plants untreated and treated with beneficial microbes viz. Bacillus subtilis BHHU100, Trichoderma harzianum TNHU27 and Pseudomonas aeruginosa PJHU15 either singly or in the form of consortium. Cha...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Dalotia coriaria as a predator of Drosophila suzukii: Functional responses, reduced fruit infestation and molecular diagnostics
Publication date: October 2015 Source:Biological Control, Volume 89 Author(s): Justin M. Renkema , Zachariah Telfer , Tara Gariepy , Rebecca H. Hallett Drosophila suzukii Matsumura is a recent invasive fruit pest in North and South America and Europe, causing pre-harvest damage and significant economic losses to crops. Little is known about biological control of D. suzukii; here we report the predatory capability of Dalotia (Atheta) coriaria Kraatz, a commercially available control agent against small dipteran pests, and develop molecular tools to assess predation. Da. coriaria showed a Type II functional response to all...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Can Beauveria bassiana Bals. (Vuill) (Ascomycetes: Hypocreales) and Tamarixia triozae (Burks) (Hymenoptera: Eulophidae) be used together for improved biological control of Bactericera cockerelli (Hemiptera: Triozidae)?
In conclusion, although the parasitism rate in control and fungus-treated nymphs was similar, suggesting a combination of both biological control agents is possible, we believe there are also negative implications for the parasitoid because its survival was greatly reduced after attacking infected nymphs. Graphical abstract (Source: Biological Control)
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Microencapsulation of Bacillus subtilis B99-2 and its biocontrol efficiency against Rhizoctonia solani in tomato
The objectives of this study were to develop a microencapsulation procedure of B. subtilis B99-2 using maltodextrin and gum arabic as wall materials to determine the optimum conditions of spray-drying in microencapsulation, evaluate storage stability of microcapsules, and assess their biocontrol efficiency against Rhizoctonia solani in tomato under field conditions. We microencapsulated the Bacillus thallus by spray-drying with various concentrations of the wall material. Maltodextrin was found to be an efficient wall material, especially at concentrations higher than 80%, while gum arabic did not affect the bacterial surv...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Characterization and efficacy of Muscodor cinnamomi in promoting plant growth and controlling Rhizoctonia root rot in tomatoes
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): Nakarin Suwannarach , Jaturong Kumla , Kenji Matsui , Saisamorn Lumyong Muscodor cinnamomi was selected and investigated for its in vitro ability to produce indole-3-acetic acid (IAA) to solubilize different toxic metal (Ca, Co, Cd, Cu, Pb, Zn)-containing insoluble minerals and tolerance to metals, herbicides and an insecticide. The results indicated that this fungus is able to produce IAA (45.36±2.40μgml−1) in liquid media. This phytohormone stimulated coleoptile elongation, and increased seed germination and root elongation ...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Recruitment of aphidophagous arthropods to sorghum plants infested with Melanaphis sacchari and Schizaphis graminum (Hemiptera: Aphididae)
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): Felipe Colares , J.P. Michaud , Clint L. Bain , Jorge B. Torres A significant question in biological control is the extent to which indigenous natural enemies might be pre-adapted to exploit invasive species that constitute novel prey. We observed the recruitment of natural enemies to aphid microcosms – pots containing four sorghum plants infested with either Melanaphis sacchari (Zehntner), a newly invasive aphid, or Schizaphis graminum (Rondani), an established pest. The first cohort was monitored in open habitat along a tree line near...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

In vitro selection of a fungal pathogen for use against Diaphorina citri
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): N. Orduño-Cruz , A.W. Guzmán-Franco , E. Rodríguez-Leyva , R. Alatorre-Rosas , H. González-Hernández , G. Mora-Aguilera , J.C. Rodríguez-Maciel The Asian citrus psyllid (ACP), Diaphorina citri, is an important pest of citrus, which transmits the disease Huanglongbing (HLB) and has had devastating effects on the citrus industry around the world. Control relies mainly on synthetic pesticides, but biological control using entomopathogenic fungi may provide an alternative strategy. We evaluated sixteen fu...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

In vivo selection of entomopathogenic fungal isolates for control of Diaphorina citri (Hemiptera: Liviidae)
Publication date: November 2015 Source:Biological Control, Volume 90 Author(s): N. Orduño-Cruz , A.W. Guzmán-Franco , E. Rodríguez-Leyva , R. Alatorre-Rosas , H. González-Hernández , G. Mora-Aguilera The Asian citrus psyllid, Diaphorina citri, is an important pest of citrus, which transmits the disease Huanglongbing with devastating effects on the citrus industry around the world. Control relies mainly on synthetic pesticides, but biological control using entomopathogenic fungi may provide an alternative strategy. Based on previous in vitro experiments, we selected four isolates, one fr...
Source: Biological Control - June 10, 2015 Category: Biology Source Type: research

Investigating the poor performance of heather beetle, Lochmaea suturalis (Thompson) (Coleoptera: Chrysomelidae), as a weed biocontrol agent in New Zealand: Has genetic bottlenecking resulted in small body size and poor winter survival?
Publication date: Available online 29 April 2015 Source:Biological Control Author(s): Simon V. Fowler , Paul Peterson , D. Paul Barrett , Shaun Forgie , Dianne M. Gleeson , Helen Harman , Gary J. Houliston , Lindsay Smith Heather beetle (Lochmaea suturalis), has underperformed when compared with the damage it does to native heather in Europe. Mean heather beetle body size, measured by elytron area, was 10% smaller in NZ populations compared with beetles from northern UK where the NZ beetles originated. Previous research in Europe showed that small beetles suffer higher winter mortality. Field-collected heather beetles in...
Source: Biological Control - May 7, 2015 Category: Biology Source Type: research

Host stage suitability and impact of Encarsia noyesi (Hymenoptera: Aphelinidae) on the invasive Rugose spiraling whitefly, Aleurodicus rugioperculatus (Hemiptera: Aleyrodidae), in Florida
Publication date: Available online 1 May 2015 Source:Biological Control Author(s): Anthony J. Boughton , Miguel A. Mendez , Antonio W. Francis , Trevor R. Smith , Lance S. Osborne , Catharine M. Mannion Rugose spiraling whitefly (RSW), Aleurodicus rugioperculatus, is an invasive species that was first detected in the United States as a pest in urban landscapes in Miami Dade County in south Florida in 2009. Subsequently RSW has spread to become a serious nuisance pest on ornamental plants and palms in urban areas across south Florida. In 2012, an aphelinid parasitoid, Encarsia noyesi, was first documented attacking RSW in...
Source: Biological Control - May 7, 2015 Category: Biology Source Type: research

Rhizospheric changes of fungal and bacterial communities in relation to soil health of multi-generation apple orchards
Publication date: Available online 2 May 2015 Source:Biological Control Author(s): F. Caputo , F. Nicoletti , F. De Luca Picione , L.M. Manici The study focused on changes of rhizosphere microbial communities in apple trees in long-term replanted orchards of Central Europe, aiming at developing cropping practices to mitigate replant problems. It started from the evidence of a previous study which showed that a slight modification of root-colonizing fungal communities was responsible for a great increase of plant growth in soil samples which had previously been subjected to a gamma-irradiation cycle (25 kGy for 8 h), as c...
Source: Biological Control - May 7, 2015 Category: Biology Source Type: research

Impact of macrocidins, produced by Phoma macrostoma, on carotenoid profiles of plants
Publication date: Available online 2 May 2015 Source:Biological Control Author(s): M. Hubbard , R.K. Hynes , K.L. Bailey Phoma macrostoma (Montagne) is a bioherbicide that controls broadleaf weeds such as Canada thistle (Cirsium arvense L. (Scop.)) and dandelion (Taraxacum officinale Weber ex F.H. Wigg.), while leaving crop plants, such as wheat (Triticum aestivum L.) and pumpkin (Cucurbita L. spp), unharmed. The bioherbicidal activity of P. macrostoma is largely due to the production of phytotoxic secondary metabolites, macrocidins. While macrocidins produce photobleaching symptoms in susceptible plants, the mechanism(s...
Source: Biological Control - May 7, 2015 Category: Biology Source Type: research