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

Beneficial effect of Bacillus sp. P12 on soil biological activities and pathogen control in common bean
This study explored the potential of Bacillus sp. P12 strain for improving soil quality and consequently favoring growth of common bean (Phaseolus vulgaris L.) and, on the other hand, for controlling infection with the plant pathogen Macrophomina phaseolina, which induces charcoal rot. P12 inhibited in vitro the development of six native M. phaseolina strains isolated from Salta region, with fungal inhibition ranging between 55 and 70 %. This bacilli synthesized different isoforms of the lipopeptides kurstakin, surfactin, iturin, polimyxin and fengycin in the presence of the plant pathogen, as determined by MALDI-TOF. Unde...
Source: Biological Control - October 25, 2019 Category: Biology Source Type: research

Identification of two endophytic fungi that control Septoria tritici blotch in the field, using a structured screening approach
Publication date: Available online 24 October 2019Source: Biological ControlAuthor(s): Meike A.C. Latz, Birgit Jensen, David B. Collinge, Hans Jørgen Lyngs JørgensenAbstractWe applied a structured screening approach to identify biocontrol agents (BCAs) against the wheat disease Septoria tritici blotch (STB) caused by Zymoseptoria tritici, with potential for commercial use. Since a limitation of many screening programmes is that BCAs with an effect in vitro do not necessarily show an effect in planta, we relied on in planta screening and aimed to optimise host and environmental compatibility of the BCAs by iso...
Source: Biological Control - October 25, 2019 Category: Biology Source Type: research

Investigating possible mechanisms of Pichia caribbica induced with ascorbic acid against postharvest blue mold of apples
Publication date: Available online 19 October 2019Source: Biological ControlAuthor(s): Qiya Yang, Junwei Diao, Dhanasekaran Solairaj, Ngolong Ngea Guillaume Legrand, Hongyin ZhangAbstractThe present study investigated the effect of ascorbic acid (Vitamin C, VC) at 250μg/mL in the enhancement of biocontrol efficacy of Pichia caribbica against blue mold decay caused by Penicillium expansum on apples. Compared to the performance of the yeast without treatment, P. caribbica induced by 250 μg/mL of VC potentially enhanced biocontrol activity against P. expansum and high growth rate on the apple surface when stored at 20&d...
Source: Biological Control - October 20, 2019 Category: Biology Source Type: research

The impacts of biological control on the performance of Lythrum salicaria 20 years post-release
Publication date: January 2020Source: Biological Control, Volume 140Author(s): E. St. Louis, M. Stastny, R.D. SargentAbstractBiological control has the potential to be an effective tool in the control of invasive plants. However, because it involves the introduction of a novel species to an ecosystem, predicting the potential impacts and overall effectiveness can be difficult, especially at the outset. For this reason, long term follow up of programs is essential. Unfortunately, few programs include official follow up, and those that do are often not collecting all the information necessary to assess the benefits and risks...
Source: Biological Control - October 17, 2019 Category: Biology Source Type: research

Characterization of a native Bacillus velezensis-like strain for the potential biocontrol of tropical fruit pathogens
Publication date: Available online 16 October 2019Source: Biological ControlAuthor(s): Manuela Reyes-Estebanez, Patricia Sanmartín, Juan Carlos Camacho-Chab, Susana C. De la Rosa-García, Manuel Jesús Chan Bacab, Ruth Noemí Águila Ramírez, Francisco Carrillo-Villanueva, Erika De la Rosa-Escalante, Jorge Luis Arteaga-Garma, Miguel Serrano, Benjamín Otto Ortega-MoralesAbstractPostharvest fungal decay causes economic loss and may cause human intoxication. Biological control of fungal decay of fruits using antagonistic native bacteria is a promising alternative. Leaf-associated (...
Source: Biological Control - October 16, 2019 Category: Biology Source Type: research

Biocontrol potential of entomopathogenic nematodes against Phyllognathus dionysius Fabricius (Coleoptera: Scarabaeidae)
Publication date: January 2020Source: Biological Control, Volume 140Author(s): Jagadeesh Patil, Vijayakumar Rangasamy, Nagesh M, Prasanna Holajjer (Source: Biological Control)
Source: Biological Control - October 16, 2019 Category: Biology Source Type: research

Timing of failed parasitoid development in Halyomorpha halys eggs
Publication date: Available online 5 October 2019Source: Biological ControlAuthor(s): Joanna K. Konopka, Danny Poinapen, Tara Gariepy, David W. Holdsworth, Jeremy N. McNeilAbstractInvasive species can destabilize ecological communities by becoming novel hosts, prey, predators or competitors for native species. They can have lasting effects on population dynamics when they reduce the fitness of native individuals. The establishment and spread of invasive Halyomorpha halys, in Europe and North America, have presented native natural enemies in the introduced areas with such a challenge. The native parasitoids readily parasiti...
Source: Biological Control - October 7, 2019 Category: Biology Source Type: research

The impacts of biological control on the performance of Lythrum salicaria 20 years post-release
Publication date: Available online 3 October 2019Source: Biological ControlAuthor(s): E. St. Louis, M. Stastny, R.D. SargentAbstractBiological control has the potential to be an effective tool in the control of invasive plants. However, because it involves the introduction of a novel species to an ecosystem, predicting the potential impacts and overall effectiveness can be difficult, especially at the outset. For this reason, long term follow up of programs is essential. Unfortunately, few official programs include follow up, and those that do are often not collecting all the information necessary to assess the benefits an...
Source: Biological Control - October 4, 2019 Category: Biology Source Type: research

Complete genome sequence of the mountain-cultivated ginseng endophyte Burkholderia stabilis and its antimicrobial compounds against ginseng root rot disease
Publication date: Available online 3 October 2019Source: Biological ControlAuthor(s): Hoki Kim, Tapan Kumar Mohanta, Young-Hwan Park, Soo-Chul Park, Gnanendra Shanmugam, Jin-Soo Park, Junhyun Jeon, Hanhong BaeAbstractGinseng (Panax ginseng Meyer) is one of the most important perennial medicinal plants. Ginseng is vulnerable to life-threatening diseases like root rot, blight, damping off, and spotting diseases because of its long cultivation period. Chemical control has numerous drawbacks for the plant and environment. Therefore, there is an immediate demand to replace the chemical agents with biological agents. We isolated...
Source: Biological Control - October 4, 2019 Category: Biology Source Type: research

ClpP mediates antagonistic interaction of Lysobacter enzymogenes with a crop fungal pathogen
Publication date: Available online 3 October 2019Source: Biological ControlAuthor(s): Mingming Yang, Shuangshuang Ren, Danyu Shen, Shan-Ho Chou, Guoliang QianAbstractClpXP protease is widely distributed in the bacterial kingdom and plays a vital role in maintaining protein quality, physiology, metabolism, and virulence in pathogenic bacteria; however, its functionality in crop-protecting bacteria is rarely investigated. Here, we uncover the role of ClpXP in Lysobacter enzymogenes, an environmental bacterial predator of crop fungal pathogens. We showed that ClpXP, as represented by ClpP, was involved in the antagonistic int...
Source: Biological Control - October 4, 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: Available online 1 October 2019Source: Biological ControlAuthor(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...
Source: Biological Control - October 1, 2019 Category: Biology Source Type: research

Co-culture of Trichoderma atroviride SG3403 and Bacillus subtilis 22 improves the production of antifungal secondary metabolites
In this study, the co-cultivation of Trichoderma atroviride SG3403 and Bacillus subtilis 22 was optimized for the production of antifungal metabolites. Response surface methodology was applied to establish a statistical model for optimizing the co-culture medium components and fermentation conditions. The results showed that the optimal co-culture parameters were 28 ˚C, 214 rpm, initial pH of 6.8 and a medium containing 10 g/l yeast powder and 27.6 g/l molasses. Under the optimal conditions, the fermented culture filtrate of the co-culture inhibited Fusarium graminearum by 54.22%. Furthermore, antifungal and plant growth ...
Source: Biological Control - September 29, 2019 Category: Biology Source Type: research

The influence of Piriformospora indica on the resistance of two rhododendron cultivars to Phytophthora cinnamomi and P. plurivora
Publication date: Available online 27 September 2019Source: Biological ControlAuthor(s): Aleksandra Trzewik, Robert Maciorowski, Evelyn Klocke, Teresa OrlikowskaAbstractExperiments were carried out on the use of Piriformospora indica, an endomycorrhizal-like fungus, to increase the resistance of two rhododendron cultivars ‘Nova Zembla’ and ‘Alfred’ to the pathogens Phytophthora cinnamomi and P. plurivora. The interaction between P. indica and the pathogens was evaluated in dual cultures on KM and PDA media. The growth of P. indica colonies was restricted by pathogens during the 7–13 days of cu...
Source: Biological Control - September 27, 2019 Category: Biology Source Type: research

Editorial Board
Publication date: December 2019Source: Biological Control, Volume 139Author(s): (Source: Biological Control)
Source: Biological Control - September 26, 2019 Category: Biology Source Type: research

Establishment of Beauveria bassiana as a fungal endophyte in pecan (Carya illinoinensis) seedlings and its virulence against pecan insect pests
Publication date: Available online 23 September 2019Source: Biological ControlAuthor(s): Tshimangadzo Ramakuwela, Justin Hatting, Clive Bock, Fernando E. Vega, Lenny Wells, George N. Mbata, David Shapiro-IlanAbstractPecan (Carya illinoinensis) is an important crop in the USA, which produces approximately 55% of the world’s pecans. Several insect pests and various plant diseases reduce crop yield directly destroying nutmeats, or indirectly through effects on foliage and shucks, reducing photosynthesis. Beauveria bassiana is a well-studied, commercialized fungal entomopathogen that when applied inundatively is an effec...
Source: Biological Control - September 24, 2019 Category: Biology Source Type: research

Quality of aphid honeydew for a parasitoid varies as a function of both aphid species and host plant
Publication date: Available online 19 September 2019Source: Biological ControlAuthor(s): Lucie S. Monticelli, Alejandro Tena, Mathilda Idier, Edwige Amiens-Desneux, Nicolas DesneuxAbstractHoneydew i.e., the sugar-rich excretion of phloem-sap feeders, is the most available sugar source in agroecosystems which enables parasitoids to increase their fitness. For the parasitoids of honeydew-producing insects, honeydew is associated with host presence, suggesting that parasitoids can find carbohydrate sources and hosts at the same place. Hence, these parasitoids may have evolved to efficiently use the honeydew produced by their ...
Source: Biological Control - September 20, 2019 Category: Biology Source Type: research

Trichoderma asperellum, a potential biological control agent of Stemphylium vesicarium, on onion (Allium cepa L.)
In this study, we identified S. vesicarium in onion plants from Mexico with symptoms of leaf blight, and evaluated the potential of Trichoderma asperellum as a biological control agent against S. vesicarium. The in vitro antifungal activity of T. asperellum isolates from cultures of mango (Tm), tomato (Tt) and onion (To) were evaluated against S. vesicarium. In dual culture assays, the three T. asperellum isolates inhibited between 54 and 61% of S. vesicarium mycelial growth. Using the ‘poisoned food technique’ we showed that the cell-free culture filtrate of T. asperellum isolate To inhibited growth of S. vesi...
Source: Biological Control - September 19, 2019 Category: Biology Source Type: research

Combined applications of an entomopathogenic fungus and a predatory mite to control fungus gnats (Diptera: Sciaridae) in mushroom production
Publication date: Available online 17 September 2019Source: Biological ControlAuthor(s): Faeze Tavoosi Ajvad, Hossein Madadi, J.P. Michaud, Doustmorad Zafari, Mohammad KhanjaniAbstractThe fungus gnat Lycoriella auripilla Winnertz (Diptera: Sciaridae) is a key pest of mushroom production in Iran where it can be a year-round problem on commercial farms. We evaluated the entomopathogenic fungus Metarhizium anisopliae (Hypocreales: Clavicipitaceae) and the predatory soil mite, Gaeolaelaps aculeifer (Canestrini) (Mesostigmata: Laelapidae) as biocontrol agents of L. auripilla larvae when applied alone or in combination. Concentr...
Source: Biological Control - September 18, 2019 Category: Biology Source Type: research

Advances in Biological Control of the German cockroach, Blattella germanica (L.)
Publication date: Available online 17 September 2019Source: Biological ControlAuthor(s): Xiao Yuan Pan, Fan ZhangAbstractThe German cockroach, Blattella germanica (L.) is an indoor sanitary pest worldwide and seriously threatens human health. With the rapid development of insecticide resistance, biological control has gradually become the most promising strategy for cockroach control. In this review, we focus on the latest advances in the use of following materials for biocontrol of the German cockroach: entomopathogenic bacteria, fungi, viruses, natural enemies, nematodes and plant-derived substances, placing them in...
Source: Biological Control - September 18, 2019 Category: Biology Source Type: research

Biocontrol potential of entomopathogenic Heterorhabditis and Steinernema nematodes against Phyllognathus dionysius Fabricius (Coleoptera: Scarabaeidae)
Publication date: Available online 17 September 2019Source: Biological ControlAuthor(s): Jagadeesh Patil, Rangasamy Vijayakumar, M. Nagesh, Prasanna Holajjer (Source: Biological Control)
Source: Biological Control - September 18, 2019 Category: Biology Source Type: research

Attraction of Chelonus insularis to host and host habitat volatiles during the search of Spodoptera frugiperda eggs
Publication date: Available online 14 September 2019Source: Biological ControlAuthor(s): Linnet Roque-Romero, Juan Cisneros, Julio C. Rojas, Fabian R. Ortiz-Carreon, Edi A. MaloAbstractEgg parasitoids use different strategies than do larval parasitoids to locate hosts. The wasp Chelonus insularis Cresson is a key egg parasitoid of the fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), one of the main insect pests of maize (Zea mays L.). Using a Y-glass tube olfactometer, in this study we determined the roles of chemical cues from host and host habitats used by C. insularis when they search for FAW eggs. We found tha...
Source: Biological Control - September 15, 2019 Category: Biology Source Type: research

A bittersweet meal: the impact of sugar solutions and honeydew on the fitness of two predatory gall midges
Publication date: Available online 13 September 2019Source: Biological ControlAuthor(s): Stefano Fraton, Marcus V.A. Duarte, Dominiek Vangansbeke, Felix L. Wäckers, Marcel Dicke, Apostolos PekasAbstractAdult survival and reproduction of many species of arthropod natural enemies depend exclusively on sugar-rich food such as honeydew. Here, we tested the impact of two types of honeydew as well as several sugars at different concentrations (10%, 25%, 50%) on the longevity and reproduction of two life-history omnivores. On the one hand, the aphid-feeding gall midge Aphidoletes aphidimyza (Rondani) and on the other hand th...
Source: Biological Control - September 15, 2019 Category: Biology Source Type: research

A population genetic study of the egg parasitoid Baryscapus servadeii reveals large scale automictic parthenogenesis and almost fixed homozygosity
Publication date: Available online 10 September 2019Source: Biological ControlAuthor(s): Mauro Simonato, Marco Pilati, Emmanuelle Magnoux, Claudine Courtin, Laure Sauné, Jérôme Rousselet, Andrea Battisti, Marie-Anne Auger-Rozenberg, Carole KerdelhuéAbstractThe pine processionary moth Thaumetopoea pityocampa - T. wilkinsoni is one of the main defoliators of pine and cedar forests in the Mediterranean area. Its distribution is currently expanding northward and to higher altitudes due to climate warming. This species is associated with a rich community of predators and parasitoids. The specialist eg...
Source: Biological Control - September 12, 2019 Category: Biology Source Type: research

Efficacy of Yarrowia lipolytica in the biocontrol of green mold and blue mold in Citrus reticulata and the mechanisms involved
This study investigated the efficacy of Yarrowia lipolytica against these diseases in mandarins and the relative defense mechanisms. The results indicated that Y. lipolytica has a great potential to inhibit the infections by P. digitatum and P. italicum in mandarins, while both the decay incidence and lesion diameter decreased in Y. lipolytica treated mandarins, in a dose-dependent manner. Furthermore, Y. lipolytica treatment had no side effects on quality paraments of mandarins. In vitro tests demonstrated that, spore germination and germ tube length of P. digitatum and P. italicum were both inhibited by Y. lipolytica. In...
Source: Biological Control - September 8, 2019 Category: Biology Source Type: research