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Beauveria bassiana

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https://www.readbyqxmd.com/read/29138624/entomopathogenic-fungi-as-dual-control-agents-against-both-the-pest-myzus-persicae-and-phytopathogen-botrytis-cinerea
#1
Hwi-Geon Yun, Dong-Jun Kim, Won-Seok Gwak, Tae-Young Shin, Soo-Dong Woo
The green peach aphid (Myzus persicae), a plant pest, and gray mold disease, caused by Botrytis cinerea, affect vegetables and fruit crops all over the world. To control this aphid and mold, farmers typically rely on the use of chemical insecticides or fungicides. However, intensive use of these chemicals over many years has led to the development of resistance. To overcome this problem, there is a need to develop alternative control methods to suppress populations of this plant pest and pathogen. Recently, potential roles have been demonstrated for entomopathogenic fungi in endophytism, phytopathogen antagonism, plant growth promotion, and rhizosphere colonization...
September 2017: Mycobiology
https://www.readbyqxmd.com/read/29135952/integrated-pest-management-of-coffee-berry-borer-in-hawaii-and-puerto-rico-current-status-and-prospects
#2
Luis F Aristizábal, Melissa Johnson, Suzanne Shriner, Robert Hollingsworth, Nicholas C Manoukis, Roxana Myers, Paul Bayman, Steven P Arthurs
The coffee berry borer (CBB), Hypothenemus hampei, is the most significant insect pest of coffee worldwide. Since CBB was detected in Puerto Rico in 2007 and Hawaii in 2010, coffee growers from these islands are facing increased costs, reduced coffee quality, and increased pest management challenges. Here, we outline the CBB situation, and summarize the findings of growers, researchers, and extension professionals working with CBB in Hawaii. Recommendations for the Integrated Pest Management (IPM) program for CBB in Hawaiian Islands and Puerto Rico include: (1) establish a CBB monitoring program, (2) synchronize applications of insecticides with peak flight activity of CBB especially during the early coffee season, (3) conduct efficient strip-picking as soon as possible after harvest and perform pre-harvest sanitation picks in CBB hotspots if needed, (4) establish protocols to prevent the escape of CBB from processing areas and when transporting berries during harvest, and (5) stump prune by blocks...
November 14, 2017: Insects
https://www.readbyqxmd.com/read/29102780/involvement-of-laccase2-and-yellow-e-genes-in-antifungal-host-defense-of-the-model-beetle-tribolium-castaneum
#3
Yuuki Hayakawa, Mitsuki Sawada, Masaki Seki, Patchara Sirasoonthorn, Shotaro Shiga, Katsumi Kamiya, Chieka Minakuchi, Ken Miura
We previously reported that the moderate knockdown of chitin synthase 1 gene of the model beetle Tribolium castaneum impairs the host defense against entomopathogenic fungi, Beauveria bassiana and Metarhizium anisopliae, which infect host insects via the direct penetration of cuticular integuments (Hayakawa et al, 2017). In this study, we focused on the antifungal roles of laccase2 (Lac2) as well as yellow-e (Y-e) genes, both of which are shown to be important to the establishment of stable cuticular structures in this beetle species...
November 1, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29079530/identification-and-function-of-camp-response-element-binding-protein-in-oak-silkworm-antheraea-pernyi
#4
Jin Gao, Yu Sun, Yuxuan Sun, Chen Chen, Saima Kausar, Jiwu Tian, Baojian Zhu, Chaoliang Liu
Cyclic AMP response element binding (CREB) proteins participate in the regulation of many biological processes. However, little is known about their role in immune regulation in the Oak silkworm (Antheraea pernyi). In this study, a CREB gene was identified in A. pernyi and its role in immune regulation was investigated. ApCREB shares conserved signature motifs with other CREB proteins, and includes a typical leucine zipper domain, specific DNA-binding site, nuclear localisation signal (NLS) and cAMP-dependent protein kinase phosphorylation site...
October 24, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29079330/compatibility-of-chemical-insecticides-and-entomopathogenic-fungi-for-control-of-soybean-defoliating-pest-rachiplusia-nu
#5
Sebastian A Pelizza, Santiago Schalamuk, María R Simón, Sebastian A Stenglein, Suani G Pacheco-Marino, Ana C Scorsetti
Rachiplusia nu (Guenée) (Lepidoptera: Noctuidae) is one of the major lepidopteran pests defoliating soybeans (Glycine max Merrill) in Argentina. The combined use of chemical insecticides and entomopathogenic fungi is a promising pest-control option to minimize adverse chemical effects. In this work, we evaluated the interactions between five insecticides-two being considered biorational-and five fungal entomopathogenic strains under laboratory conditions in order to determine the possible usefulness of combinations of these agents against R...
October 24, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/29064185/field-efficacy-of-insect-pathogen-botanical-and-jasmonic-acid-for-the-management-of-wheat-midge-sitodiplosis-mosellana-and-the-impact-on-adult-parasitoid-macroglenes-penetrans-populations-in-spring-wheat
#6
Govinda Shrestha, Gadi V P Reddy
The wheat midge, Sitodiplosis mosellana, is a serious pest of wheat worldwide. In North America, management of S. mosellana in spring wheat relies on the timely application of pesticides, based on midge adults levels caught in pheromone traps or seen via field scouting during wheat heading. In this context, biopesticides can be an effective alternative to pesticides for controlling S. mosellana within an integrated pest management program. A field study using insect pathogenic fungus Beauveria bassiana GHA, nematode Steinernema feltiae with Barricade polymer gel 1 %, pyrethrin, combined formulations of B...
October 24, 2017: Insect Science
https://www.readbyqxmd.com/read/29042323/diversity-and-abundance-of-beauveria-bassiana-in-soils-stink-bugs-and-plant-tissues-of-common-bean-from-organic-and-conventional-fields
#7
Yordanys Ramos, Orelvis Portal, Erik Lysøe, Nicolai V Meyling, Ingeborg Klingen
The aim of this study was to evaluate the natural occurrence of Beauveria spp. in soil, from infections in the stink bug Piezodorus guildinii, an important pest of common bean (Phaseolus vulgaris) and as endophytes in bean plant tissue. Twelve conventional and 12 organic common bean fields in the Villa Clara province, Cuba were sampled from September 2014 to April 2015. One hundred and fifty Beauveria isolates were obtained from soil samples, bean plant parts and stink bugs. The overall frequency of occurrence of Beauveria isolates in conventional fields (8...
October 16, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29029702/lysyl-trna-synthetase-krs-acts-a-virulence-factor-of-beauveria-bassiana-by-its-vital-role-in-conidial-germination-and-dimorphic-transition
#8
Xiao-Guan Zhu, Zhen-Jian Chu, Sheng-Hua Ying, Ming-Guang Feng
Krs is a class II lysyl-tRNA synthetase (KRS) that is involved in cytosolic protein synthesis in budding yeast but functionally has not been explored in filamentous fungi. Previous transcriptomic analysis has revealed that a Krs-coding gene is likely involved in pathogenesis of Beauveria bassiana, a classic insect pathogen as a global source of fungal insecticides. Here, we show that Krs is localized in the cytoplasm of hyphal cells and acts as a substantial virulence factor in B. bassiana. Deletion of krs resulted in 10-h delayed germination, decreased (15 %) thermotolerance, and lowered (46 %) UV-B resistance of aerial conidia despite limited impact on conidiation capacity and slight or inconspicuous influence on radial growth on rich and minimal media with different carbon (10 sugars/polyols) and nitrogen (17 amino acids) sources...
November 2017: Fungal Biology
https://www.readbyqxmd.com/read/29029699/viability-purity-and-genetic-stability-of-entomopathogenic-fungi-species-using-different-preservation-methods
#9
Miguel A Ayala-Zermeño, Adrien Gallou, Angélica M Berlanga-Padilla, Gilda Y Andrade-Michel, José C Rodríguez-Rodríguez, Hugo C Arredondo-Bernal, Roberto Montesinos-Matías
Preservation methods for entomopathogenic fungi (EPF) require effective protocols to ensure uniform processes and to avoid alterations during storage. The aim of this study was to preserve Beauveria bassiana, Metarhizium acridum, M. anisopliae, M. rileyi, Isaria javanica, Hirsutella thompsonii, H. citriformis and Lecanicillium lecanii in mineral oil (MO), sterile water (SW), silica gel (SG), lyophilisation (L), ultracold-freezing at -70 °C, and cryopreservation at -196 °C. The viability and purity of the fungi were then verified: phenotypic characteristics were evaluated qualitatively at 6, 12 and 24 m...
November 2017: Fungal Biology
https://www.readbyqxmd.com/read/29028999/control-of-pecan-weevil-with-microbial-biopesticides
#10
David I Shapiro-Ilan, Ted E Cottrell, Clive Bock, Kim Mai, Debbie Boykin, Lenny Wells, William G Hudson, Russell F Mizell
The pecan weevil, Curculio caryae (Horn) (Coleoptera: Curculionidae), is a key pest of pecans Carya illinoinensis ([Wangenh.] K. Koch) (Fagales: Juglandaceae). Control recommendations rely on broad spectrum chemical insecticides. Due to regulatory and environmental concerns, effective alternatives for C. caryae control must be sought for pecan production in conventional and organic systems. We explored the use of microbial biopesticides for control of C. caryae in Georgia pecan orchards. Three experiments were conducted...
September 23, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/29026120/co-inoculum-of-beauveria-brongniartii-and-b-bassiana-shows-in-vitro-different-metabolic-behaviour-in-comparison-to-single-inoculums
#11
L Canfora, N Abu-Samra, M Tartanus, B H Łabanowska, A Benedetti, F Pinzari, E Malusà
The use of entomopathogenic fungi for biocontrol of plant pests is recently receiving an increased interest due to the need of reducing the impact of agricultural practices on the environment. Biocontrol efficacy could be improved by co-inoculation of different microorganisms. However, interactions between the fungal species can trigger or depress the biocontrol activity. Co-inoculation of two entomopathogenic fungi (Beauveria bassiana and B. brongniartii) was performed in vitro to evaluate the effects of their joint behaviour on a range of different carbon sources in comparison to single inoculation...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29018621/the-isolation-and-identification-of-pathogenic-fungi-from-tessaratoma-papillosa-drury-hemiptera-tessaratomidae
#12
Xiang Meng, Junjie Hu, Gecheng Ouyang
BACKGROUND: Litchi stink-bug, Tessaratoma papillosa Drury (Hemiptera: Tessaratomidae), is one of the most widespread and destructive pest species on Litchi chinensis Sonn and Dimocarpus longan Lour in Southern China. Inappropriate use of chemical pesticides has resulted in serious environmental problems and food pollution. Generating an improved Integrated Pest Management (IPM) strategy for litchi stink-bug in orchard farming requires development of an effective biological control agent...
2017: PeerJ
https://www.readbyqxmd.com/read/28982140/entomopathogenic-fungi-based-mechanisms-for-improved-fe-nutrition-in-sorghum-plants-grown-on-calcareous-substrates
#13
Silvia Raya-Díaz, Antonio Rafael Sánchez-Rodríguez, José Manuel Segura-Fernández, María Del Carmen Del Campillo, Enrique Quesada-Moraga
Although entomopathogenic fungi (EPF) are best known for their ability to protect crops against insect pests, they may have other beneficial effects on their host plants. These effects, which include promoting plant growth and conferring resistance against abiotic stresses, have been examined in recent years to acquire a better understanding of them. The primary purposes of the present study were (i) to ascertain in vitro whether three different strains of EPF (viz., Metarhizium, Beauveria and Isaria) would increase the Fe bioavailability in calcareous or non-calcareous media containing various Fe sources (ferrihydrite, hematite and goethite) and (ii) to assess the influence of the EPF inoculation method (seed dressing, soil treatment or leaf spraying) on the extent of the endophytic colonization of sorghum and the improvement in the Fe nutrition of pot-grown sorghum plants on an artificial calcareous substrate...
2017: PloS One
https://www.readbyqxmd.com/read/28967173/daylight-length-dependent-translocation-of-vivid-photoreceptor-in-cells-and-its-essential-role-in-conidiation-and-virulence-of-beauveria-bassiana
#14
Sen-Miao Tong, An-Xue Zhang, Chong-Tao Guo, Sheng-Hua Ying, Ming-Guang Feng
The fungal insect pathogen Beauveria bassiana has the blue-light photoreceptor VIVID (VVD) but lacks a pigmentation pattern to trace its light responses. Here we show that the fungal vvd is transcriptionally expressed, and linked to other blue/red photoreceptor genes, in a daylight length-dependent manner. GFP-tagged VVD fusion protein was localized to periphery, cytoplasm and vacuoles of hyphal cells in light/dark (L:D) cycles of 24:0 and 16:8 and aggregated in cytoplasm with shortening daylight until transfer into nuclei in full darkness...
October 2, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28965177/removal-of-industrial-dyes-and-heavy-metals-by-beauveria-bassiana-ftir-sem-tem-and-afm-investigations-with-pb-ii
#15
Deepak Gola, Anushree Malik, Maneesh Namburath, Shaikh Ziauddin Ahammad
Presence of industrial dyes and heavy metal as a contaminant in environment poses a great risk to human health. In order to develop a potential technology for remediation of dyes (Reactive remazol red, Yellow 3RS, Indanthrene blue and Vat novatic grey) and heavy metal [Cu(II), Ni(II), Cd(II), Zn(II), Cr(VI) and Pb(II)] contamination, present study was performed with entomopathogenic fungi, Beauveria bassiana (MTCC no. 4580). High dye removal (88-97%) was observed during the growth of B. bassiana while removal percentage for heavy metals ranged from 58 to 75%...
October 1, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28945317/effects-of-fluorine-containing-usnic-acid-and-fungus-beauveria-bassiana-on-the-survival-and-immune-physiological-reactions-of-colorado-potato-beetle-larvae
#16
Vadim Yu Krukov, Oksana G Tomilova, Olga A Luzina, Olga N Yaroslavtseva, Yuriy B Akhanaev, Maksim V Tyurin, Bahytzhan A Duisembekov, Nariman F Salakhutdinov, Viktor V Glupov
BACKGROUND: The search for compounds that interact synergistically with entomopathogenic fungi is aimed at enhancing the efficacy and stability of biological products against pest insects e.g., against the Colorado potato beetle (CPB). We hypothesized that fluorine-containing derivatives of usnic acid (FUA) could be candidates for development of multi-component bio-insecticides. The aim of this study was to analyze the co-influence of FUA and Beauveria bassiana on the survival and immune-physiological reactions of CPB larvae...
September 25, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28942502/insights-into-hydrocarbon-assimilation-by-eurotialean-and-hypocrealean-fungi-roles-for-cyp52-and-cyp53-clans-of-cytochrome-p450-genes
#17
Carla Huarte-Bonnet, Suresh Kumar, Mario C N Saparrat, Juan R Girotti, Marianela Santana, John E Hallsworth, Nicolás Pedrini
Several filamentous fungi are able to concomitantly assimilate both aliphatic and polycyclic aromatic hydrocarbons that are the biogenic by-products of some industrial processes. Cytochrome P450 monooxygenases catalyze the first oxidation reaction for both types of substrate. Among the cytochrome P450 (CYP) genes, the family CYP52 is implicated in the first hydroxylation step in alkane-assimilation processes, while genes belonging to the family CYP53 have been linked with oxidation of aromatic hydrocarbons...
September 23, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28936573/evaluation-of-beauveria-bassiana-infection-in-the%C3%A2-hemolymph-serum-proteins-of-the-housefly-musca-domestica-l-diptera-muscidae
#18
Sapna Mishra, Peeyush Kumar, Anushree Malik
Beauveria bassiana plays a prominent role in biocontrol of houseflies, Musca domestica (L.). Thus, a deeper insight into immune response of M. domestica during B. bassiana infection was warranted to assist the production of more efficient mycoinsecticides. The present study investigates changes in protein profile of M. domestica hemolymph serum post B. bassiana infection using two-dimensional difference gel electrophoresis (2D-DIGE) followed by identification of selected proteins by matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS)...
November 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28931153/the-coffee-berry-borer-coleoptera-curculionidae-in-puerto-rico-distribution-infestation-and-population-per-fruit
#19
Yobana A Mariño, Victor J Vega, José M García, José C Verle Rodrigues, Noelia M García, Paul Bayman
The coffee berry borer (CBB) (Hypothenemus hampei: Ferrar) was first detected in Puerto Rico in 2007. Its distribution since then has been extensive, but not extensively documented. An island-wide survey was carried out from August to November 2014 (the coffee production season) to assess CBB distribution, infestation, and population per fruit. The CBB was well-established throughout the coffee-growing area of Puerto Rico, but was not evenly distributed. Infestation (or percentages of fruits perforated) in sites sampled ranged from 0 to 95%, and CBB number per infested fruit varied from 1 to 34 individuals...
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28917671/scanning-electron-microscopy-and-histopathological-observations-of-beauveria-bassiana-infection-of-colorado-potato-beetle-larvae
#20
Yulin Duan, Hui Wu, Zhiyan Ma, Liu Yang, Deying Ma
Beauveria bassiana is a potential candidate for use as an environmentally friendly bio-pesticide. We studied the infection process and histopathology of B. bassiana strain NDBJJ-BFG infection of the Colorado potato beetle (Leptinotarsa decemlineata) using scanning electron microscopy and hematoxylin-eosin staining of tissue sections. The results show that the fungus penetrated the insect epidermis through germ tubes and appressoria after spraying the larvae with conidial suspensions. The conidia began to germinate after 24 h and invade the epidermis...
October 2017: Microbial Pathogenesis
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