Corrigendum to “Plant architecture, prey distribution and predator release strategy interact to affect foraging efficiency of the predatory mite Phytoseiulus persimilis (Acari: Phytoseiidae) on cucumber” [Biol. Control 53 (2010) 136–141]
Publication date: Available online 31 December 2019Source: Biological ControlAuthor(s): Lessando M. Gontijo, David C. Margolies, James R. Nechols, Raymond A. Cloyd (Source: Biological Control)
Source: Biological Control - January 23, 2020 Category: Biology Source Type: research

Strains of Neopestalotiopsis sp. are in vitro antagonists of Cryphonectria parasitica
Publication date: April 2020Source: Biological Control, Volume 143Author(s): Ana J. González, Trapiello EstefaníaAbstractAs Pestalotiopsis sensu lato has been described as a producer of numerous metabolites that are effective against other microorganisms and since they were found in samples of chestnut bark with the appearance of healed cankers, the present study was proposed to assess whether these isolates had any effect on the fungus causing the chestnut blight, Cryphonectria parasitica.For this, 13 isolates from 60 samples of chestnut bark were selected and tested against C. parasitica, finding that two o...
Source: Biological Control - January 23, 2020 Category: Biology Source Type: research

Interference of plant fixed oils on predation and reproduction of Neoseiulus baraki (Acari: Phytoseiidae) feeding on Aceria guerreronis (Acari: Eriophyidae)
This study aimed to assess whether degummed soybean and cottonseed oils modify the functional and numerical responses of Neoseiulus baraki (Acari: Phytoseiidae), a predatory mite frequently associated with A. guerreronis. The exposure of N. baraki to the dosage required to kill 99% of the population (LC99) of the plant oils, estimated for A. guerreronis, changed the functional response of the predator from type III to type II. Attack rate and the change in consumption were not influenced by the fixed oils. However, handling time and consumption peak were adversely affected by the exposure of the predator to degummed soybea...
Source: Biological Control - January 18, 2020 Category: Biology Source Type: research

Potential of the fungal feeding nematode Aphelenchus avenae to control fungi and the plant parasitic nematode Ditylenchus destructor associated with garlic
Publication date: Available online 17 January 2020Source: Biological ControlAuthor(s): Shunsuke Haraguchi, Toyoshi YoshigaAbstractTogether with several fungi, the plant parasitic nematode Ditylenchus destructor is among the pathogens that cause serious damage to garlic production areas in Japan. Because D. destructor is a plant and fungal feeder, its infestation may be influenced by the garlic plant-associated fungi and suppressed through control of those fungi. However, no information is currently available regarding the interaction between the nematode and the fungi. Aphelenchus avenae is a non-parasitic fungivorous nema...
Source: Biological Control - January 18, 2020 Category: Biology Source Type: research

Drechslerella dactyloides and Dactylaria brochopaga mediated structural defense in tomato plants pre-challenged with Meloidogyne incognita
Publication date: Available online 16 January 2020Source: Biological ControlAuthor(s): Udai B. Singh, Shailendra Singh, Deepti Malviya, Rajan Chaurasia, Pramod K. Sahu, Sushil K. Sharma, A.K. SaxenaAbstractThe present study was undertaken with the objectives to study Drechslerella dactyloides NDAd-05 and Dactylaria brochopaga NDDb-15 mediated induction of structural defense responses leading to lower disease development and promoting growth in tomato pre-challenged with Meloidogyne incognita. The potential strains D. dactyloides NDAd-05 and D. brochopaga NDDb-15 were taken from Plant-Microbe Interaction and Rhizosphere Bio...
Source: Biological Control - January 17, 2020 Category: Biology Source Type: research

Efficacy of Trichoderma asperellum TC01 against anthracnose and growth promotion of Camellia sinensis seedlings
In this study, we investigated the role of Trichoderma asperellum TC01 in the regulation of C. sinensis growth and the activation of defence responses against Colletotrichum gloeosporioides C62 by developing a biocontrol–plant–pathogen interaction system. When C. sinensis was co-cultivated with T. asperellum TC01, it was able to reduce 58.37% of disease severity compared with other treatments. Furthermore, compared with control plant growth, T. asperellum TC01-treated plants showed an increase in shoot height (7.5%), stem diameter (34.09%), shoot fresh weight (81.18%), root fresh weight (93.75%), shoot dry weig...
Source: Biological Control - January 17, 2020 Category: Biology Source Type: research

Efficacy of entomopathogenic nematodes against the sugarbeet wireworm, Limonius californicus (Mannerheim) (Coleoptera: Elateridae)
Publication date: Available online 11 January 2020Source: Biological ControlAuthor(s): Ramandeep Kaur Sandhi, David Shapiro-Ilan, Anamika Sharma, Gadi V.P. ReddyAbstractWireworms, the larval stage of click beetles (Coleoptera: Elateridae), are economically important soil-dwelling pests that attack many field crops worldwide. Wireworms have become a serious threat to spring wheat in the Northern Great Plains because of a lack of effective control measures, creating a need for alternative control methods such as biological control with entomopathogenic nematodes (EPNs). A laboratory bioassay was used to test ten EPN strains ...
Source: Biological Control - January 12, 2020 Category: Biology Source Type: research

Editorial Board
Publication date: March 2020Source: Biological Control, Volume 142Author(s): (Source: Biological Control)
Source: Biological Control - January 12, 2020 Category: Biology Source Type: research

Attraction of adult Harmonia axyridis to volatiles of the insectary plant Cnidium monnieri
In this study, we tested the attractiveness of volatiles emanating from healthy and aphid-infested insectary plant Cnidium monnieri (L.) Cuss. to H. axyridis adults in a Y-tube olfactometer. Next, using coupled gas chromatography - electroantennogram detection (GC-EAD) and gas chromatography - mass spectrometry (GC-MS) identified the volatile components which elicited electrophysiological activity in H. axyridis adults. Lastly, Y-tube olfactometer tests in laboratory and field traps were used to verify the effectiveness of the volatile components. In olfactometer trials, H. axyridis adults preferred healthy and aphid-infes...
Source: Biological Control - January 11, 2020 Category: Biology Source Type: research

In vitro inhibitory effect of the bacterium Serratia marcescens on Fusarium proliferatum growth and fumonisins production
Publication date: Available online 7 January 2020Source: Biological ControlAuthor(s): Zhiqing Guo, Xia Zhang, Juxiang Wu, Jing Yu, Manlin Xu, Dianxu Chen, Zhimeng Zhang, Xinguo Li, Yucheng Chi, Shubo WanAbstractFumonisins are a family of hepatotoxic and nephrotoxic mycotoxins produced mainly by Fusarium verticillioides and F. proliferatum. F. proliferatum is an important pathogen colonizing an extraordinarily broad range of host plants worldwide and causing serious economic losses in agriculture, which has drawn our research attention. In order to manage F. proliferatum and its secondary metabolites in crop products and an...
Source: Biological Control - January 7, 2020 Category: Biology Source Type: research

Strains of Neopestaliotiopsis sp. are in vitro antagonists of Cryphonectria parasitica
Publication date: Available online 7 January 2020Source: Biological ControlAuthor(s): J. González Ana, Trapiello EstefaníaAbstractAs Pestalotiopsis sensu lato has been described as a producer of numerous metabolites that are effective against other microorganisms and since they were found in samples of chestnut bark with the appearance of healed cankers, the present study was proposed to assess whether these isolates had any effect on the fungus causing the chestnut blight, Cryphonectria parasitica.For this, 13 isolates from 60 samples of chestnut bark were selected and tested against C. parasitica, finding t...
Source: Biological Control - January 7, 2020 Category: Biology Source Type: research

Insect predator odors protect herbivore from fungal infection
Publication date: Available online 7 January 2020Source: Biological ControlAuthor(s): Todd A. Ugine, Jennifer S. ThalerAbstractLethal predators and pathogens can reduce the size of pest populations and help regulate crop-damaging herbivores. Additionally, predators like the spined soldier bug (Podisus maculiventris) can elicit non-consumptive effects in herbivores such as the Colorado potato beetle (Leptinotarsa decemlineata), causing changes in prey behavior, physiology and life history. While it is known that lethal predators and pathogens interact, there is little known about the interaction of predator-induced non-cons...
Source: Biological Control - January 7, 2020 Category: Biology Source Type: research

Efficiency of Bacillus subtilis for Root-Knot and Lesion Nematodes Management in Sugarcane
The objective of this study was to evaluate two application procedures of Bacillus subtilis for biological control of nematodes in two sugarcane genotypes (RB867515 and SP81-3250) compared to a conventional chemical control. The experiment was conducted in an area naturally infested with root-knot nematodes (Meloidogyne spp.) and root-lesion nematodes (Pratylenchus spp.). The treatments were two genotypes of sugarcane (SP81-3250 and RB867515) combined with four nematodes control methods (carbofuran, Bacillus subtilis applied at planting, B. subtilis applied at post-emergence and control). Three evaluations were performed t...
Source: Biological Control - January 5, 2020 Category: Biology Source Type: research

Caterpillar-parasitoid food webs and biological control in two extensive crops
Publication date: Available online 31 December 2019Source: Biological ControlAuthor(s): Susana Avalos, Ezequiel González, Arnaldo Mangeaud, Graciela ValladaresAbstractFood webs offer a useful approach to the study of complex communities interacting across trophic levels, potentially linking community structure and ecosystem services such as biological control. Herbivore-parasitoid food webs are relevant for agricultural production, in terms of pests and their control. Here, we compare caterpillar-parasitoid food webs in a perennial (alfalfa) and an annual (soybean) crop in Central Argentina, by analyzing their diver...
Source: Biological Control - January 1, 2020 Category: Biology Source Type: research

Corrigendum to ‘Plant architecture, prey distribution and predator release strategy interact to affect foraging efficiency of the predatory mite Phytoseiulus persimilis (Acari: Phytoseiidae) on cucumber’
Publication date: Available online 31 December 2019Source: Biological ControlAuthor(s): Lessando M. Gontijo, David C. Margolies, James R. Nechols, Raymond A. Cloyd (Source: Biological Control)
Source: Biological Control - January 1, 2020 Category: Biology Source Type: research

Competitive Saprophytic Ability of the Hypovirulent Isolate QT5-19 of Botrytis cinerea and Its Importance in Biocontrol of Necrotrophic Fungal Pathogens
This study determined the competitive saprophytic ability (CSA) of the hypovirulent isolate QT5-19 of Botrytis cinerea on potato dextrose agar (PDA) at 20°C. Meanwhile, importance of the QT5-19 CSA in biocontrol against virulent isolates of B. cinerea and Sclerotinia sclerotiorum (a close relative of B. cinerea), and the mechanisms for the QT5-19 CSA were elucidated. The results showed that QT5-19 had higher CSA than the virulent isolates 08168 (B. cinerea) and EP-1PNA367 (S. sclerotiorum) on potato dextrose agar. The hyphal fragments of QT5-19 exhibited an effective suppression against infection of leaves of oilseed r...
Source: Biological Control - December 31, 2019 Category: Biology Source Type: research

Formulations of Pseudomonas fluorescens and Burkholderia pyrrocinia control rice blast of upland rice cultivated under no-tillage system
The objective of this work was to evaluate the potential of four liquid formulations containing Pseudomonas fluorescens (BRM 32111) and Burkholderia pyrrocina (BRM 32113) to suppress leaf blast, under field conditions. The trials were conducted at Embrapa Rice and Beans, between December 2018 and April 2019. The experiments were performed in a randomized block containing 7 treatments, 4 replicates. The treatments consisted of microbiolized seeds and sprays at 14 and 21 days after planting with: Formulation 11 + BRM 32,113 (T1); Formulation 32 + BRM 32,113 (T2); Formulation 11 + BRM 32,111...
Source: Biological Control - December 29, 2019 Category: Biology Source Type: research

Black pepper (Piper nigrum L.) associated endophytic Pseudomonas putida BP25 alters root phenotype and induces defense in rice (Oryza sativa L.) against blast disease incited by Magnaporthe oryzae
This study explains endophyte P. putida BP25 induced root phenotypic alteration in rice along with its potential to exploit as alternate for blast management.Graphical abstract (Source: Biological Control)
Source: Biological Control - December 27, 2019 Category: Biology Source Type: research

Assessing the fundamental host-range of Leptinotarsa texana Schaeffer as an essential precursor to biological control risk analysis
Publication date: Available online 23 December 2019Source: Biological ControlAuthor(s): Greg Lefoe, Laurence Haegi, Libby Rumpff, David Gopurenko, Anthony T. Slater, Kym Butler, Cindy E. HauserAbstractThe leaf beetle Leptinotarsa texana Schaeffer (Coleoptera: Chrysomelidae) was introduced to South Africa from the USA to control silverleaf nightshade Solanum elaeagnifolium Cav. (Solanales: Solanaceae). Subsequent post-release studies in South Africa found the beetle to be an effective, host-specific biocontrol agent of S. elaeagnifolium. Leptinotarsa texana has potential for biological control of S. elaeagnif...
Source: Biological Control - December 24, 2019 Category: Biology Source Type: research

Impact of the biological control agent, Laricobius nigrinus, on hemlock woolly adelgid sistens generation and their ovisacs in the eastern United States
Publication date: Available online 23 December 2019Source: Biological ControlAuthor(s): Carrie S. Jubb, Ariel R. Heminger, Albert E. Mayfield III, Joseph S. Elkinton, Gregory J. Wiggins, Jerome F. Grant, Jeffrey A. Lombardo, Thomas J. McAvoy, Ryan S. Crandall, Scott M. SalomAbstractHemlock woolly adelgid (HWA), Adelges tsugae Annand (Hemiptera: Adelgidae), is an invasive pest causing significant mortality to eastern and Carolina hemlock in eastern North America. Since 2003, management of HWA has included targeted release of the HWA predator Laricobius nigrinus Fender (Coleoptera: Derodontidae), native to western North Amer...
Source: Biological Control - December 24, 2019 Category: Biology Source Type: research

The endophytic strain Bacillus velezensis OEE1: An efficient biocontrol agent against Verticillium Wilt of Olive and a potential plant growth promoting bacteria
Publication date: Available online 20 December 2019Source: Biological ControlAuthor(s): Manel Cheffi Azabou, Yaakoub Gharbi, Imen Medhioub, Karim Ennouri, Hazar Barham, Slim Tounsi, Mohamed Ali TrikiAbstractThe use of antagonists in the biocontrol of soilborne pathogens is a promising approach to manage many diseases. In this context, Bacillus velezensis strain OEE1, isolated from endogenous root tissue of olive trees, showed the most effective antifungal activity under in vitro conditions against V. dahliae with inhibition rate exceeding 92 % using the dual culture method to investigate effects of diffusible compounds. Th...
Source: Biological Control - December 20, 2019 Category: Biology Source Type: research

Editorial Board
Publication date: February 2020Source: Biological Control, Volume 141Author(s): (Source: Biological Control)
Source: Biological Control - December 20, 2019 Category: Biology Source Type: research

Differential effects of two plant viruses on performance and biocontrol efficiency of Encarsia formosa fed on Bemisia tabaci
Publication date: Available online 19 December 2019Source: Biological ControlAuthor(s): Jie Li, Tianbo Ding, Dong ChuAbstractThe consequences of infection by plant virus on the efficacy of parasitoid wasps are poorly understood. In the current study, an age-stage, two-sex life table and the CONSUME-MSChart computer program were used to test the performance of Encarsia formosa (Hymenoptera: Aphelinidae) on the whitefly, Bemisia tabaci Mediterranean (MED) species, occurring on healthy tomato plants compared to tomato plants infected with Tomato chlorosis virus (ToCV) and Tomato yellow leaf curl virus (TYLCV). The results sho...
Source: Biological Control - December 20, 2019 Category: Biology Source Type: research

Foliar application of entomopathogenic nematodes and fungi for the management of the diamond back moth in greenhouse and field
In this study Heterorhabditis bacteriophora Poinar (Rhabditida: Heterorhabditidae), strain HNI0100, Beauveria bassiana (Balsamo-Crivelli) Vuillemin (Hypocreales: Cordycipitaceae), strain Bb9205, and Metarhizium anisopliae (Metchinikoff) Sorokin (Hypocreales: Clavicipitaceae), strain Ma9236, combined application was evaluated for P. xyllostella control under greenhouse and field conditions. Greenhouse assays were performed first spraying fungi at day 0 (0, 1 x 105, 1 x 106, and 1 x 107 conidia/cm2), followed by infective juvenile application after two, four, and six days at 0, 300, 600 and 1200 IJs/cm2. Based on highest bro...
Source: Biological Control - December 15, 2019 Category: Biology Source Type: research

Comparative genome and transcriptome analysis of the nematode-trapping fungus Duddingtonia flagrans reveals high pathogenicity during nematode infection
Publication date: Available online 14 December 2019Source: Biological ControlAuthor(s): Wei Zhang, Dandan Liu, Zhichao Yu, Bin Hou, Yaru Fan, Zehao Li, Shijie Shang, Yidan Qiao, Jiangtao Fu, Jiekang Niu, Bin Li, Kexin Duan, Xiaoye Yang, Rui WangAbstractDuddingtonia flagrans is a nematode-trapping fungus that is widely used to control parasitic nematodes in livestock. To investigate the features and advantages of D. flagrans for nematode control at the molecular level, the genome and transcriptome of D. flagrans were sequenced and studied through a comparative analysis. The genome of D. flagrans had a size of 36.3 Mb and co...
Source: Biological Control - December 14, 2019 Category: Biology Source Type: research

New isolates of Trichoderma spp. as biocontrol and plant growth–promoting agents in the pathosystem Pyrenophora teres-barley in Argentina
Publication date: February 2020Source: Biological Control, Volume 141Author(s): Paulina Moya, Viviana Barrera, Josefina Cipollone, Carolina Bedoya, Lucila Kohan, Andrea Toledo, Marina SisternaAbstractThe fungus Pyrenophora teres, causal agent of net blotch of barley, generates important yield losses, mainly regarding grain weight and quality of malt extract for beer production. In order to find new strategies to manage this disease, we evaluated in vitro and in vivo antagonistic interactions among different native isolates of Trichoderma spp. and P. teres. The microorganisms were isolated from different barley crop areas o...
Source: Biological Control - December 14, 2019 Category: Biology Source Type: research

The protein expression profile and transcriptome characterization of Pichia caribbica induced by ascorbic acid under the oxidative stress
Publication date: Available online 10 December 2019Source: Biological ControlAuthor(s): Qiya Yang, Junwei Diao, Ngolong Ngea Guillaume Legrand, Boateng Nana Adwoa Serwah, Marui Zhu, Bo Pang, Hongyin ZhangAbstractAscorbic acid (vitamin C, Vc) is a well-known antioxidant, which can eliminate reactive oxygen species (ROS) in order to protect yeasts subjected oxidative stress. In our previous research, Pichia caribbica, one of the antagonistic yeasts showed an activity against postharvest diseases of apples, and Vc enhanced the tolerance to oxidative stress of P. caribbica, and improved its biocontrol efficacy to postharvest b...
Source: Biological Control - December 11, 2019 Category: Biology Source Type: research

An assessment of the modulation of the population dynamics of pathogenic Fusarium oxysporum f. sp. lycopersici in the tomato rhizosphere by means of the application of Bacillus subtilis QST713, Trichoderma sp. TW2 and two other composts
In this study, experiments were carried out “in situ” over two consecutive years to evaluate the efficiency of two biological control agents (BCAs) (Bacillus subtilis QST713 and Trichoderma sp. TW2), and two composts in controlling the disease. In this context, the quantitative polymerase chain reaction was used along with soil chemical parameters to study the general effects of treatments on the severity of the disease and on the non-target microbial populations residing in the studied rhizosphere and bulk soil. The ecological fitness of the BCAs was also evaluated. Furthermore, as BCAs produce elicitors, whic...
Source: Biological Control - December 10, 2019 Category: Biology Source Type: research

Classical biological control of the erythrina gall wasp, Quadrastichus erythrinae, in Hawaii: conserving an endangered habitat
Publication date: Available online 6 December 2019Source: Biological ControlAuthor(s): Leyla V. Kaufman, Juliana Yalemar, Mark G. WrightAbstractErythrina gall wasp, Quadrastichus erythrinae (Hymenoptera: Eulophidae) began a global range expansion around 2005, and is considered a significant adventive pest in Asia, Pacific islands, South- and Central America, and North America, including Hawaii. The Hawaii endemic wiliwili tree, Erythrina sandwicensis (Fabaceae) was severely impacted and threatened with extinction, leading to the release of a classical biological control agent, Eurytoma erythrinae (Hymenoptera: Eurytomidae)...
Source: Biological Control - December 7, 2019 Category: Biology Source Type: research

Use of organic composts to suppress bentgrass diseases in Agrostis stolonifera
This study was carried out during three years to evaluate the antagonistic effect of the microbiota associated with organic composts. Two composts were produced from agro-industrial residues, P1 and P2. Fungi from both composts were isolated and identified and their antagonistic capacity was evaluated, in vivo and in vitro tests, against Sclerotium rolfsii Sacc, Clarireedia gen. nov. (formerly Sclerotinia homoeocarpa (Benn, 1937)) and Rhizoctonia solani (Kühn 1858). In vivo tests were run for Agrostis stolonifera L., seeded in P1, P2 and a commercial peat (T) based substrate (Hansa Torf Floragard, Germany), in 100&nbs...
Source: Biological Control - December 7, 2019 Category: Biology Source Type: research

Whorl-stage maize provides a microclimate refuge for predatory ladybeetles
In this study, we surveyed the temporal dynamics of ladybeetles on maize plants (Zea mays L.) at different phenological stages within experimental plots (2010-2014) and commercial fields (2013-2014). Ladybeetle adults attained high abundance on whorl-stage maize, despite a relative scarcity of prey items (e.g., aphids, insect eggs). Field work in 2015 further revealed how ladybeetle abundance on whorl-stage maize was higher than on adjacent cotton plants – with>88% of ladybeetle adults occurring within the maize whorl. Whorl-inhabiting adults were the most abundant at 12:00, when air temperature was the highest; a...
Source: Biological Control - December 5, 2019 Category: Biology Source Type: research

Classical and fortuitous biological control of the prickly pear cochineal, Dactylopius opuntiae, in Israel
Publication date: Available online 28 November 2019Source: Biological ControlAuthor(s): Zvi Mendel, Alexei Protasov, Juan M. Vanegas-Rico, J. Refugio Lomeli-Flores, Pompeo Suma, Esteban Rodríguez-LeyvaAbstractThe cochineal, Dactylopius opuntiae (Hemiptera: Dactylopiidae) was first reported in Israel in 2013 in a restricted area in the upper Galilee from where, by 2018, it had spread throughout Galilee and the northern Coastal Plain. It infests and kills the Indian-fig prickly pear, Opuntia ficus-indica (Cactaceae), a prominent plant in the landscape of Israel and other Mediterranean countries. Inundative releases of...
Source: Biological Control - November 29, 2019 Category: Biology Source Type: research

Biocontrol potential of the endophytic Bacillus amyloliquefaciens YN201732 against tobacco powdery mildew and its growth promotion
Publication date: Available online 28 November 2019Source: Biological ControlAuthor(s): Rong Jiao, Shahzad Munir, Pengfei He, Huanwen Yang, Yixin Wu, Junwei Wang, Yongzhan Cai, Ge Wang, Yueqiu HeAbstractThe effectiveness of Bacillus amyloliquefaciens YN201732, a beneficial endophyte isolated from tobacco seeds was explored for control of tobacco powdery mildew and the systemic resistance mechanisms involved. The results of the study showed that endophyte YN201732 has antagonistic effects on 12 pathogenic fungi. The fermentation broth can inhibit the spore germination and has good control effect on tobacco powdery mild...
Source: Biological Control - November 29, 2019 Category: Biology Source Type: research

Optimization of a vacuum-drying protectants for the biocontrol agent Pichia membranifaciens and its influence on viability and efficacy
In this study, we focused on screening for an optimal protectant formula for vacuum-dried Pichia membranifaciens and compared the biocontrol efficacy of fresh P. membranifaciens and dried one on citrus fruit. We also used several techniques to test the viability of P. membranifaciens that were vacuum dried with the protectants. By performing an orthogonal experiment to optimize an appropriate protectants combination, which consisted of 20 % (w/v) trehalose, 2 % (w/v) sodium glutamate, 5 % (w/v) polyvinyl pyrrolidone (PVP) and 20 % (w/v) skim milk, the viability of the vacuum-dried P. membranifaciens cells was improved from...
Source: Biological Control - November 26, 2019 Category: Biology Source Type: research

Isolation and identification of an endophytic bacteria Bacillus velezensis 8-4 exhibiting biocontrol activity against potato scab
In this study, we isolated and screened an endophytic bacteria strain 8-4 from healthy potatoes. The strain 8-4 has a strong inhibitory effect on S. galilaeus and other five potato fungal pathogens. Based on morphological characteristics, 16S rDNA and gyrB gene sequence analyses, it was identified as Bacillus velezensis. Dual-culture test showed that the strain 8-4 not only inhibited the growth of S. galilaeus on potato, but also displayed inhibitory effects against four other potato pathogens, named Phoma foveat, Rhizoctonia solani, Fusarium avenaceum and Colletotrichum coccodes. It had the highest antagonistic activity a...
Source: Biological Control - November 26, 2019 Category: Biology Source Type: research

Trichoderma as biocontrol and plant growth-promoting agent in the pathosystem Pyrenophora teres-barley in Argentina
Publication date: Available online 16 November 2019Source: Biological ControlAuthor(s): Moya Paulina, Barrera Viviana, Cipollone Josefina, Bedoya Carolina, Kohan Lucila, Toledo Andrea, N. Sisterna MarinaAbstractThe fungus Pyrenophora teres (Drechsler), causal agent of net blotch of barley, generates important yield losses, mainly regarding grain weight and quality of malt extract for beer production. In order to find new strategies to manage this disease, we evaluated in vitro and in vivo antagonistic interactions among different native isolates of Trichoderma spp. and P. teres. The microorganisms were isolated from differ...
Source: Biological Control - November 18, 2019 Category: Biology Source Type: research

ChbB increases antifungal activity of Bacillus amyloliquefaciens against Valsa mali and shows synergistic action with bacterial chitinases
Publication date: Available online 15 November 2019Source: Biological ControlAuthor(s): N-N Wang, K-Y Gao, N Han, R-Z Tian, J-L Zhang, X Yan, L-L HuangAbstractApple Valsa canker (AVC), caused by the fungus Valsa mali (Vm), is a serious and persistent disease affecting apple production in China that is difficult to control chemically and agriculturally. In order to develop biological control agents (BCAs) for this disease, an antifungal activity-deficient Bacillus amyloliquefaciens mutant, ED-2544, was characterized using PCR amplification, Southern blotting, and SiteFinding-PCR. The B. amyloliquefaciens ChbB(chitin-binding...
Source: Biological Control - November 16, 2019 Category: Biology Source Type: research

Trichoderma brevicrassum strain TC967 with capacities of diminishing cucumber disease caused by Rhizoctonia solani and promoting plant growth
Publication date: Available online 16 November 2019Source: Biological ControlAuthor(s): Yi Zhang, Wen-Ying ZhuangAbstractSome Trichoderma species have been used as biocontrol agents in agriculture. In order to explore additional useful natural resources, a large scale survey of Trichoderma strains from China was conducted and T. brevicrassum strain TC967 was singled out. In vitro assays indicated that it showed high chitinase activity in agar medium, inhibited growth of the plant-pathogenic fungus Rhizoctonia solani (72.14%) in dual culture, and revealed strong mycoparasitic ability through coiling and penetrating hyphae o...
Source: Biological Control - November 16, 2019 Category: Biology Source Type: research

Cover crops improve early season natural enemy recruitment and pest management in cotton production
Publication date: Available online 14 November 2019Source: Biological ControlAuthor(s): Carson Bowers, Michael Toews, Yangxuan Liu, Jason M. SchmidtAbstractA shift to more ecologically based farming practices could improve the sustainability and economic stability of agricultural systems. Habitat management in and around agricultural fields can provide stable environments that aid in the proliferation of natural enemy communities that moderate pest populations and injury. Winter cover crops offer a potentially cost-effective approach to improving habitat that supports natural enemy communities early in the growing season. ...
Source: Biological Control - November 15, 2019 Category: Biology Source Type: research

Key carabid species drive spring weed seed predation of Viola arvensis
Publication date: Available online 14 November 2019Source: Biological ControlAuthor(s): Benjamin Carbonne, David A. Bohan, Sandrine PetitGraphical abstract (Source: Biological Control)
Source: Biological Control - November 15, 2019 Category: Biology Source Type: research

Editorial Board
Publication date: January 2020Source: Biological Control, Volume 140Author(s): (Source: Biological Control)
Source: Biological Control - November 13, 2019 Category: Biology Source Type: research

Alternative prey impedes the efficacy of a natural enemy of mosquitoes
We examined the predatory impact of the notonectid Anisops debilis towards larvae of the vector mosquito complex Culex pipiens in the presence of varying densities of alternative daphniid prey. Experimentally, we quantified functional responses of A. debilis towards target mosquito prey under different background daphniid compositions, and also tested for prey switching propensities by the notonectid predator. Increasing background densities of daphniids significantly reduced the predatory impact of notonectids on mosquitoes, characterised by reductions in attack rates, lengthening of handling times and lessening of maximu...
Source: Biological Control - November 12, 2019 Category: Biology Source Type: research

Plant secondary metabolites and low temperature are the major limiting factors for Beauveria bassiana (Bals.-Criv.) Vuill. (Ascomycota: Hypocreales) growth and virulence in a bark beetle system
Publication date: Available online 11 November 2019Source: Biological ControlAuthor(s): Andrew J. Mann, Thomas Seth DavisAbstractBeauveria bassiana is a ubiquitous entomopathogen and widely used as a biological control agent for a variety of arthropod pests, including bark beetles. The North American spruce beetle (Dendroctonus rufipennis) is a major pest in forest landscapes and recent studies show that B. bassiana is pathogenic to beetles in the lab but successful field applications have been limited by abiotic and biotic factors within the study system. To understand how habitat conditions impact fungal ecology, we eval...
Source: Biological Control - November 12, 2019 Category: Biology Source Type: research

Evaluation of Bacillus aryabhattai Sneb517 for control of Heterodera glycines in soybean
Publication date: Available online 11 November 2019Source: Biological ControlAuthor(s): Jing Zhao, Dan Liu, Yuanyuan Wang, Xiaofeng Zhu, Lijie Chen, Yuxi DuanAbstractThe soybean cyst nematode (SCN) (Heterodera glycines Ichinohe) is the leading cause of damage to soybean worldwide. The biological control potential of bacterial strain Bacillus aryabhattai Sneb517 was evaluated against H. glycines. Sneb517 exhibited high antagonistic activity to H. glycines juveniles and significant suppression of egg hatch. Results of pot experiments demonstrated that seed treatment with Sneb517 decreased the population of cysts effectively....
Source: Biological Control - November 12, 2019 Category: Biology Source Type: research

Trichoderma asperellum biocontrol activity and induction of systemic defenses against Sclerotium cepivorum in onion plants under tropical climate conditions
Publication date: Available online 8 November 2019Source: Biological ControlAuthor(s): William Rivera-Méndez, Miguel Obregón, María E. Morán-Diez, Rosa Hermosa, Enrique MonteAbstractThe biocontrol potential of three native Costa Rican Trichoderma asperellum strains has been evaluated against the necrotrophic ascomycete Sclerotium cepivorum, the causal agent of onion (Allium cepa L.) white rot. In Costa Rica, where climatic conditions enhance the development of this pathogen, white rot reduces onion yields up to 50% of total harvest. In our study, the three T. asperellum strains tested in in vitr...
Source: Biological Control - November 9, 2019 Category: Biology Source Type: research

Combined of salicylic acid and Pseudomonas fluorescens CHA0 on the expression of PR1 gene and control of Meloidogyne javanica in tomato
This study examined inducing resistance to tomato against Meloidogyne javanica, as well as time-dependent changes in the expression of PR1 gene, after applying salicylic acid (SA) and Pseudomonas fluorescens CHA0 (Pf) in the leaf tissue of healthy and infected tomatoes. Combined application of SA and Pf improved the plant growth and reduced root-galling, the number of eggs and egg-masses and reproduction factor. The results of the experiment of gene expression revealed that in all of the treatments, the expression of PR1 gene changed at different time points. The expression of PR1 gene in infected plants, 24 h after inoc...
Source: Biological Control - November 9, 2019 Category: Biology Source Type: research

Leaf heteroblasty explains unexpected spillover non-target attack on Passiflora edulis by Heliconius erato cyrbia, a biological control agent for Passiflora rubra, in Rarotonga
Publication date: February 2020Source: Biological Control, Volume 141Author(s): Quentin Paynter, Maja Poeschko, Christopher WinksAbstractLarvae of Heliconius erato cyrbia, a biocontrol agent for invasive Passiflora rubra in the Cook Islands, were discovered feeding on Passiflora edulis seedlings in Rarotonga in April 2018. This represents only the fifth known example worldwide where non-target attack has occurred on a plant species that had been included in host-range tests and deemed not at risk. Field surveys on Rarotonga revealed that non-target attack is rare and trivial, indicating that a major host-range expansion ha...
Source: Biological Control - November 7, 2019 Category: Biology Source Type: research

Control Effects of Bacillus siamensis G-3 Volatile Compounds on Raspberry Postharvest Diseases Caused by Botrytis cinerea and Rhizopus stolonifer
Publication date: Available online 3 November 2019Source: Biological ControlAuthor(s): Xiaoyu Zhang, Zhenfeng Gao, Xinxian Zhang, Wenbin Bai, Lixin Zhang, Hongbin Pei, Yongjie ZhangAbstractPost-harvest diseases of raspberries affect their storage and subsequently the ability to provide consumers with fresh products. The antifungal activity of microbial volatile organic compounds (MVOCs) against both pre and postharvest diseases has previously been demonstrated, but the control of raspberry postharvest diseases caused by Botrytis cinerea and Rhizopus stolonifer using MVOCs has not been extensively studied. We have thus inve...
Source: Biological Control - November 3, 2019 Category: Biology Source Type: research

Mycorrhiza induced tolerance in Cucumis sativus against root rot caused by Pythium ultimum depends on fungal species in the arbuscular mycorrhizal symbiosis
In this study, we investigated the influence of three AMF on root rot in Cucumis sativus caused by Pythium ultimum. Plants were grown in symbiosis with the AMF Funelliformis mosseae, Rhizophagus irregularis, Claroideoglomus claroideum or left uninoculated, and 14 days after sowing half of the plants were inoculated with P. ultimum. Plants were harvested 14, 21 and 28 days after sowing and analyzed for dry weights, AMF colonization and P. ultimum infection. The results showed three scenarios of biological control by the AM symbioses: AM with F. mosseae fully counteracted the plant growth depression caused by the pathogen; R...
Source: Biological Control - October 31, 2019 Category: Biology Source Type: research

Co-formulation of Beauveria bassiana with natural substances to control pollen beetles – Synergy between fungal spores and colza oil
Publication date: January 2020Source: Biological Control, Volume 140Author(s): Deborah Kaiser, Stephan Handschin, Rudolf P. Rohr, Sven Bacher, Giselher GrabenwegerAbstractPollen beetles (Brassicogethes spp.) are a major pest in colza (Brassica napus L., also known as oilseed rape) and show increasing resistance to commonly used insecticides. Entomopathogenic fungi (EPF) such as Beauveria bassiana have potential as a sustainable alternative means of control. However, field applications of fungal spores targeting the immigrated beetles on the crop have not been efficient to date. To enhance the effectiveness of fungal spores...
Source: Biological Control - October 26, 2019 Category: Biology Source Type: research