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Beauveria bassiana

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https://www.readbyqxmd.com/read/28917671/scanning-electron-microscopy-and-histopathological-observations-of-beauveria-bassiana-infection-of-colorado-potato-beetle-larvae
#1
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...
September 13, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28916147/microbial-associates-of-the-southern-mole-cricket-scapteriscus-borellii-are-highly-pathogenic
#2
Sudarshan K Aryal, Derreck Carter-House, Jason E Stajich, Adler R Dillman
We report the isolation and identification of seven bacterial strains and one fungal strain from dead and diseased Scapteriscus borellii mole crickets collected from a golf course in southern California. Using 16S and 18S rRNA gene sequence analysis we identified the microbes as Serratia marcescens (red), S. marcescens (white), S. marcescens (purple), Achromobacter xylosoxidans, Chryseobacterium sp., Ochrobactrum anthropi, Tsukamurella tryosinosolvens, and Beauveria bassiana. We performed a dose response curve for each of these cricket-associated microbial strains (except T...
September 12, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28891998/bioactivity-in-vitro-of-quercetin-glycoside-obtained-in-beauveria-bassiana-culture-and-its-interaction-with-liposome-membranes
#3
Paulina Strugała, Tomasz Tronina, Ewa Huszcza, Janina Gabrielska
Quercetin (Q) was used as substrate for regioselective glycosylation at the C-7 position catalyzed by Beauveria bassiana AM278 strain. As a result the glycoside quercetin 7-O-β-d-(4″-O-methyl)glucopyranoside (Q 7-MeGlu) was formed. The goal of the studies was to determine the anti-oxidative (liposome membrane protection against free radicals IC50(Q 7-MeGlu) = 5.47 and IC50(Q) = 4.49 µM) and anti-inflammatory (COX-1 and COX-2 enzymes activity inhibition) properties of Q 7-MeGlu as compared to Q. Every attempt was made to clarify the antioxidant activity of these molecules, which are able to interact with egg phosphatidylcholine liposomes, using a fluorometric method (by applying the probes MC540, TMA-DPH and DPH)...
September 11, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28888066/the-interactions-between-gut-microbiota-and-entomopathogenic-fungi-a-potential-approach-for-biological-control-of-blattella-germanica-l
#4
Fan Zhang, Xiao X Sun, Xian C Zhang, Shuo Zhang, Jie Lu, Yong M Xia, Yan H Huang, Xue J Wang
BACKGROUND: Metarhizium anisopliae and Beauveria bassiana mainly infect insects through the cuticle; gut infection occasionally occurs. Microorganisms existing in the gut may play a crucial role in the evolution and ecology of host defenses to fungal pathogens. To evaluate whether the gut bacteria participate in antifungal activity, and to determine their role in host protection, the interactions between gut bacteria and M. anisopliae and the diversity of gut microbiota in cockroaches were studied...
September 9, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28874758/sex-specific-routes-to-immune-senescence-in-drosophila-melanogaster
#5
Marco Kubiak, Matthew C Tinsley
Animal immune systems change dramatically during the ageing process, often accompanied by major increases in pathogen susceptibility. However, the extent to which senescent elevations in infection mortality are causally driven by deteriorations in canonical systemic immune processes is unclear. We studied Drosophila melanogaster and compared the relative contributions of impaired systemic immune defences and deteriorating barrier defences to increased pathogen susceptibility in aged flies. To assess senescent changes in systemic immune response efficacy we injected one and four-week old flies with the entomopathogenic fungus Beauveria bassiana and studied subsequent mortality; whereas to include the role of barrier defences we infected flies by dusting the cuticle with fungal spores...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28873459/divergent-lysm-effectors-contribute-to-the-virulence-of-beauveria-bassiana-by-evasion-of-insect-immune-defenses
#6
Kai Cen, Bing Li, Yuzhen Lu, Siwei Zhang, Chengshu Wang
The lysin motif (LysM) containing proteins can bind chitin and are ubiquitous in various organisms including fungi. In plant pathogenic fungi, a few LysM proteins have been characterized as effectors to suppress chitin-induced immunity in plant hosts and therefore contribute to fungal virulence. The effector mechanism is still questioned in fungus-animal interactions. In this study, we found that LysM proteins are also present in animal pathogenic fungi and have evolved divergently. The genome of the insect pathogen Beauveria bassiana encodes 12 LysM proteins, and the genes were differentially transcribed by the fungus when grown in different conditions...
September 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28871395/interactome-analysis-of-transcriptional-coactivator-multiprotein-bridging-factor-1-unveils-a-yeast-ap-1-like-transcription-factor-involved-in-oxidation-tolerance-of-mycopathogen-beauveria-bassiana
#7
Xin-Ling Chu, Wei-Xia Dong, Jin-Li Ding, Ming-Guang Feng, Sheng-Hua Ying
Oxidation tolerance is an important determinant to predict the virulence and biocontrol potential of Beauveria bassiana, a well-known entomopathogenic fungus. As a transcriptional coactivator, multiprotein bridging factor 1 mediates the activity of transcription factor in diverse physiological processes, and its homolog in B. bassiana (BbMBF1) contributes to fungal oxidation tolerance. In this study, the BbMBF1-interactomes under oxidative stress and normal growth condition were deciphered by mass spectrometry integrated with the immunoprecipitation...
September 4, 2017: Current Genetics
https://www.readbyqxmd.com/read/28870289/ethanol-production-from-chitosan-by-the-nematophagous-fungus-pochonia-chlamydosporia-and-the-entomopathogenic-fungi-metarhizium-anisopliae-and-beauveria-bassiana
#8
Almudena Aranda-Martinez, Miguel Ángel Naranjo Ortiz, Isabel Sofía Abihssira García, Ernesto A Zavala-Gonzalez, Luis Vicente Lopez-Llorca
Chitin is the second most abundant biopolymer after cellulose and virtually unexplored as raw material for bioethanol production. In this paper, we investigate chitosan, the deacetylated form of chitin which is the main component of shellfish waste, as substrate for bioethanol production by fungi. Fungal parasites of invertebrates such as the nematophagous Pochonia chlamydosporia (Pc) or the entomopathogens Beauveria bassiana (Bb) and Metarhizium anisopliae (Ma) are biocontrol agents of plant parasitic nematodes (eg...
November 2017: Microbiological Research
https://www.readbyqxmd.com/read/28859880/cathepsin-o-is-involved-in-the-innate-immune-response-and-metamorphosis-of-antheraea-pernyi
#9
Yu-Xuan Sun, Bao-Jian Zhu, Lin Tang, Yu Sun, Chen Chen, Muhammad Nadeem Abbas, Lei Wang, Cen Qian, Guo-Qing Wei, Chao-Liang Liu
Cathepsins are key members of mammalian papain-like cysteine proteases that play an important role in the immune response. In this study, a fragment of cDNA encoding cathepsin O proteinase (ApCathepsin O) was cloned from Antheraea pernyi. It contains an open reading frame of 1170bp and encodes a protein with 390 amino acid residues, including a conserved I29 inhibitor domain and a peptidase C1A (clan CA of cysteine proteases, papain family C1 subfamily) domain. Comparison with other previously reported cathepsin O proteins showed identity ranging from 45% to 79%...
August 30, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28856839/comparison-of-cauliflower-insect-fungus-interactions-and-pesticides-for-cabbage-root-fly-control
#10
Jaka Razinger, Metka Žerjav, Meta Zemljič-Urbančič, Špela Modic, Matthias Lutz, Hans-Josef Schroers, Jürg Grunder, Simon Fellous, Gregor Urek
Cabbage root fly (Delia radicum L.) control represents a major challenge in brassica production, therefore different management strategies for its control were tested in conventionally managed open field cauliflower production. Strategies included treatments with low risk methods such as nitrogen lime, the insecticide spinosad and the Beauveria bassiana ATCC 74040 based biopesticide Naturalis. Their effects were compared with treatments based on non-formulated fungal species Metarhizium brunneum, B. bassiana, Clonostachys solani, Trichoderma atroviride, T...
August 30, 2017: Insect Science
https://www.readbyqxmd.com/read/28854660/synergistic-combinations-of-a-pyrethroid-insecticide-and-an-emulsifiable-oil-formulation-of-beauveria-bassiana-to-overcome-insecticide-resistance-in-listronotus-maculicollis-coleoptera-curculionidae
#11
Shaohui Wu, Olga S Kostromytska, Albrecht M Koppenhöfer
The annual bluegrass weevil, Listronotus maculicollis (Kirby), is a major pest of golf course turf in eastern North America and has become particularly problematic owing to widespread development of insecticide resistance. As an alternative option to manage resistant adult L. maculicollis, we explored combinations of the pyrethroid insecticide bifenthrin with an emulsifiable oil formulation of the entomopathogenic fungus Beauveria bassiana strain GHA (Bb ES). Combinations synergistically enhanced mortality in both insecticide-susceptible and insecticide-resistant L...
August 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28854105/evaluating-the-vector-control-potential-of-the-in2care%C3%A2-mosquito-trap-against-aedes-aegypti-and-aedes-albopictus-under-semifield-conditions-in-manatee-county-florida
#12
Eva A Buckner, Katie F Williams, Ambyr L Marsicano, Mark D Latham, Christopher R Lesser
Successful integrated vector management programs may need new strategies in addition to conventional larviciding and adulticiding strategies to target Aedes aegypti and Ae. albopictus, which can develop in small, often cryptic, artificial and natural containers. The In2Care® mosquito trap was recently developed to target and kill larval and adult stages of these invasive container-inhabiting Aedes mosquitoes by utilizing autodissemination. Gravid females that visit the trap pick up pyriproxyfen (PPF) that they later transfer to nearby larval habitats as well as Beauveria bassiana spores that slowly kill them...
September 2017: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/28800848/cold-generation-of-smoke-flavour-by-the-first-phenolic-acid-decarboxylase-from-a-filamentous-ascomycete-isaria-farinosa
#13
Diana Linke, Stephanie J L Riemer, Silke Schimanski, Annabel Nieter, Ulrich Krings, Ralf G Berger
A decarboxylase (IfPAD) from the ascomycete Isaria farinosa converted ferulic acid to 4-vinylguaiacol (4-VG), a volatile which imparts the distinct "smoke flavor" of pyrolized wood. The activity was enhanced by adding (E)-ferulic acid to the culture medium and peaked with 3.6 U g(-1) mycelium (1 μmol 4-VG min(-1)). The coding sequence of 543 bp was translated into a 25 kDa protein with a homology of 91 % to putative phenolic acid decarboxylases of its teleomorph, Cordyceps militaris, and Beauveria bassiana, the anamorph of Cordyceps bassiana...
September 2017: Fungal Biology
https://www.readbyqxmd.com/read/28766034/the-hog1-like-mapk-mpk3-collaborates-with-hog1-in-response-to-heat-shock-and-functions-in-sustaining-the-biological-control-potential-of-a-fungal-insect-pathogen
#14
Jing Liu, Huan-Huan Sun, Sheng-Hua Ying, Ming-Guang Feng
The mitogen-activated protein kinase (MAPK) Mpk3/MpkC resembles the MAPK Hog1 but does not necessarily function in some filamentous fungi. Here, we compared functions of Mpk3 and Hog1 in Beauveria bassiana, a filamentous fungal insect pathogen, by multi-phenotypic analyses of their single/double deletion mutants. Growth defects of Δmpk3 were moderate on all 14 minimal media with different carbon or nitrogen sources and less severe than those of Δhog1 on most media tested. The double deletion mutant suffered significantly more severe growth defects than those observed in Δmpk3 and Δhog1, suggesting overlapping and collaborative roles of Mpk3 and Hog1 in uptake of six carbon and four nitrogen sources during normal growth...
August 2, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28762123/differential-immune-responses-of-monochamus-alternatus-against-symbiotic-and-entomopathogenic-fungi
#15
Wei Zhang, Jie Meng, Jing Ning, Peijun Qin, Jiao Zhou, Zhen Zou, Yanhong Wang, Hong Jiang, Faheem Ahmad, Lilin Zhao, Jianghua Sun
Monochamus alternatus, the main vector beetles of invasive pinewood nematode, has established a symbiotic relationship with a native ectotrophic fungal symbiont, Sporothrix sp. 1, in China. The immune response of M. alternatus to S. sp. 1 in the coexistence of beetles and fungi is, however, unknown. Here, we report that immune responses of M. alternatus pupae to infection caused by ectotrophic symbiotic fungus S. sp. 1 and entomopathogenic fungus Beauveria bassiana differ significantly. The S. sp. 1 did not kill the beetles while B...
July 28, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28761042/a-dsrna-virus-with-filamentous-viral-particles
#16
Hengxia Jia, Kaili Dong, Lingling Zhou, Guoping Wang, Ni Hong, Daohong Jiang, Wenxing Xu
Viruses with double-stranded RNA genomes form isometric particles or are capsidless. Here we report a double-stranded RNA virus, Colletotrichum camelliae filamentous virus 1 (CcFV-1) isolated from a fungal pathogen, that forms filamentous particles. CcFV-1 has eight genomic double-stranded RNAs, ranging from 990 to 2444 bp, encoding 10 putative open reading frames, of which open reading frame 1 encodes an RNA-dependent RNA polymerase and open reading frame 4 a capsid protein. When inoculated, the naked CcFV-1 double-stranded RNAs are infectious and induce the accumulation of the filamentous particles in vivo...
August 1, 2017: Nature Communications
https://www.readbyqxmd.com/read/28755300/in-vivo-gene-expression-profiling-of-the-entomopathogenic-fungus-beauveria-bassiana-elucidates-its-infection-stratagems-in-anopheles-mosquito
#17
Yiling Lai, Huan Chen, Ge Wei, Guandong Wang, Fang Li, Sibao Wang
The use of entomopathogenic fungi to control mosquitoes is a promising tool for reducing vector-borne disease transmission. To better understand infection stratagems of insect pathogenic fungi, we analyzed the global gene expression profiling of Beauveria bassiana at 36, 60, 84 and 108 h after topical infection of Anopheles stephensi adult mosquitoes using RNA sequencing (RNA-Seq). A total of 5,354 differentially expressed genes (DEGs) are identified over the course of fungal infection. When the fungus grows on the mosquito cuticle, up-regulated DEGs include adhesion-related genes involved in cuticle attachment, Pth11-like GPCRs hypothesized to be involved in host recognition, and extracellular enzymes involved in the degradation and penetration of the mosquito cuticle...
July 27, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28754033/the-influence-of-glycosylation-of-natural-and-synthetic-prenylated-flavonoids-on-binding-to-human-serum-albumin-and-inhibition-of-cyclooxygenases-cox-1-and-cox-2
#18
Tomasz Tronina, Paulina Strugała, Jarosław Popłoński, Aleksandra Włoch, Sandra Sordon, Agnieszka Bartmańska, Ewa Huszcza
The synthesis of different classes of prenylated aglycones (α,β-dihydroxanthohumol (2) and (Z)-6,4'-dihydroxy-4-methoxy-7-prenylaurone (3)) was performed in one step reactions from xanthohumol (1)-major prenylated chalcone naturally occurring in hops. Obtained flavonoids (2-3) and xanthohumol (1) were used as substrates for regioselective fungal glycosylation catalyzed by two Absidia species and Beauveria bassiana. As a result six glycosides (4-9) were formed, of which four glycosides (6-9) have not been published so far...
July 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28730600/transcriptomic-insights-into-the-alternative-splicing-mediated-adaptation-of-the-entomopathogenic-fungus-beauveria-bassiana-to-host-niches-autophagy-related-gene-8-as-an-example
#19
Wei-Xia Dong, Jin-Li Ding, Yang Gao, Yue-Jin Peng, Ming-Guang Feng, Sheng-Hua Ying
Alternative splicing (AS) regulates various biological processes in fungi by extending the cellular proteome. However, comprehensive studies investigating AS in entomopathogenic fungi are lacking. Based on transcriptome data obtained via dual RNA-seq, the first overview of AS events was developed for Beauveria bassiana growing in an insect hemocoel. The AS was demonstrated for 556 of 8,840 expressed genes, accounting for 5.4% of the total genes in B. bassiana. Intron retention was the most abundant type of AS, accounting for 87...
July 21, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28729649/effects-of-single-and-combined-applications-of-entomopathogenic-fungi-and-nematodes-against-rhynchophorus-ferrugineus-olivier
#20
Waqas Wakil, Muhammad Yasin, David Shapiro-Ilan
This study was carried out to investigate the insecticidal properties of Beauveria bassiana, Metarhizium anisopliae and Heterorhabditis bacteriophora for their virulence against different larval instars of Rhynchophorus ferrugineus (Olivier). Both fungi were either applied alone or in combination, with H. bacteriophora simultaneously or 1 and 2 weeks after fungal application; EPN were also applied alone. Moreover, assessment of host development, diet consumption, frass production and weight gain were observed at sub-lethal dose rates...
July 20, 2017: Scientific Reports
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