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Beauveria bassiana

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https://www.readbyqxmd.com/read/28629883/laboratory-evaluation-of-the-effect-of-beauveria-bassiana-on-the-predatory-mite-phytoseiulus-persimilis-acari-phytoseiidae
#1
Mohammad Shaef Ullah, Un Taek Lim
Tetranychus urticae Koch (Acari: Tetranychidae), a major pest of many agricultural crops, is mainly controlled with chemical acaricides. However, predatory mites and entomopathogens have been proposed as alternative control agents. In this study, the effect of the BotaniGard(®) GHA strain of Beauveria bassiana on the survival, longevity, fecundity, and egg hatch rate of the predatory mite Phytoseiulus persimilis Athias-Henriot (Acari: Phytoseiidae) were studied under laboratory conditions. When B. bassiana was applied directly to P...
June 16, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28615876/microscopic-investigation-to-determine-the-effect-of-beauveria-bassiana-bals-vuill-and-cymbopogon-citratus-dc-stapf-treatment-on-different-life-stages-of-musca-domestica-l
#2
Sapna Mishra, Peeyush Kumar, Anushree Malik
Microscopic investigation was done to determine the effect of entomopathogenic fungi, Beauveria bassiana and essential oil of Cymbopogon citratus on different life stages of Musca domestica. Scanning electron microscopy investigation of fungal infected larvae showed sluggish movement, rigor, and failure of body to balance in water. Treated larvae also revealed varied level of cuticle shrinkage and extreme dehydration. Surface of B. bassiana infected pupae showed varied stage of mycelial growth, while the cadaver of adult fly was observed to have extensive fungal growth covering their entire body surface...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28615623/proboscis-infection-route-of-beauveria-bassiana-triggers-early-death-of-anopheles-mosquito
#3
Minehiro Ishii, Hirotaka Kanuka, Athanase Badolo, N'Falé Sagnon, Wamdaogo M Guelbeogo, Masanori Koike, Daigo Aiuchi
Entomopathogenic fungi are known to control vector mosquito populations. Thus, understanding the infection dynamics of entomopathogenic fungi is crucial for the effective control of insect pests such as mosquitoes. We investigated the dynamics of Beauveria bassiana s.l. 60-2 infection of Anopheles stephensi by exposing the mosquito to fungus-impregnated filter paper through two infection routes and then comparing the mortality and extent of infection. Fungal development was observed after using this inoculation method with both the tarsus route and the proboscis route, but early mosquito death occurred only after infection through the proboscis route...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28605881/scorpion-neurotoxin-aait-expressing-beauveria-bassiana-enhances-the-virulence-against-aedes-albopictus-mosquitoes
#4
Sheng-Qun Deng, Qun-Di Cai, Ming-Zhi Deng, Qiang Huang, Hong-Juan Peng
To improve the insecticidal efficacy of this entomopathogen Beauveria bassiana, the fungus was genetically modified to express an insect-specific scorpion neurotoxin AaIT. The virulence of the recombinant B. bassiana strain (Bb-AaIT) against Aedes albopictus adults (which occurs via penetration through the cuticle during spore germination or by conidia ingestion), and the larvae (by conidia ingestion) was measured with bioassays. The median lethal concentration (LC50) of Bb-AaIT against A. albopictus larvae was 313...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28557308/discovery-of-a-new-intravacuolar-protein-required-for-the-autophagy-development-and-virulence-of-beauveria-bassiana
#5
Zhen-Jian Chu, Huan-Huan Sun, Xiao-Guan Zhu, Sheng-Hua Ying, Ming-Guang Feng
High proportions of hypothetical proteins exist in genomic databases of fungi, including putative secretory proteins (PSPs) likely involved in fungal invasion and virulence. Here we characterize one of many PSPs revealed in the previous transcriptome of Beauveria bassiana (a fungal insect pathogen) infecting a global lepidopteran pest and name it vacuole-localized protein 4 (VLP4) because this small, domain-lacking protein (22.96 kDa) was specifically localized in the vacuoles of hyphal cells. Deletion of VLP4 resulted in repression of almost all genes acting in autophagy and central development pathways...
May 30, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28556625/suppression-of-a-methionine-synthase-by-calmodulin-under-environmental-stress-in-the-entomopathogenic-fungus-beauveria-bassiana
#6
Jiyoung Kim, Junsang Oh, Deok-Hyo Yoon, Gi-Ho Sung
Methionine synthase (MetE, EC 2.1.1.14) catalyzes the final step in the methionine biosynthetic pathway. Methionine biosynthesis plays a major role in protein biogenesis and is the source of S-adenosyl methionine (SAM), the universal donor of methyl groups. In this study, we demonstrated that BbMetE acts as a typical MetE enzyme in the entomopathogenic fungus Beauveria bassiana. In addition, we found that BbMetE binds to calmodulin (CaM) in vitro and in vivo. The functional role of CaM binding to BbMetE was to negatively regulate BbMetE activity in B...
May 29, 2017: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/28556276/activation-of-aedes-aegypti-prophenoloxidase-3-and-its-role-in-the-immune-response-against-entomopathogenic-fungi
#7
Y Wang, H Jiang, Y Cheng, C An, Y Chu, A S Raikhel, Z Zou
Serine protease cascade-mediated melanization is an important innate immune response in insects and crustaceans, which involves the proteolytic activation of prophenoloxidase (PPO). In this study, we investigated the role of Aedes aegypti PPO3 in antifungal immune defence. We expressed and purified recombinant PPO3 (rPPO3) in Escherichia coli and demonstrated that rPPO3 was activated by ethanol and, to a lesser extent, by cetylpyridinium chloride. In the presence of Cu(2+) , rPPO3 exhibited enzyme activity...
May 27, 2017: Insect Molecular Biology
https://www.readbyqxmd.com/read/28552321/vital-role-for-cyclophilin-b-cypb-in-asexual-development-dimorphic-transition-and-virulence-of-beauveria-bassiana
#8
Zhen-Jian Chu, Huan-Huan Sun, Sheng-Hua Ying, Ming-Guang Feng
Cyclophilin B (CypB) was previously revealed as one of many putative secretory proteins in the transcriptome of Beauveria bassiana infection to a lepidopteran pest. Here we show a main localization of CypB in hyphal cell walls and septa and its essential role in the in vitro and in vivo asexual cycles of the fungal insect pathogen. Deletion of cypB reduced colony growth by 16-42% on two rich media and 30 scant media with different carbon or nitrogen sources. The deletion mutant suffered a delayed conidiation on a standard medium and a final 47% reduction in conidial yield, accompanied with drastic transcript depression of several key genes required for conidiation and conidial maturation...
May 25, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28545993/the-effect-of-entomopathogenic-fungal-culture-filtrate-on-the-immune-response-of-the-greater-wax-moth-galleria-mellonella
#9
Louise Mc Namara, James C Carolan, Christine T Griffin, David Fitzpatrick, Kevin Kavanagh
Galleria mellonella is a well-established model species regularly employed in the study of the insect immune response at cellular and humoral levels to investigate fungal pathogenesis and biocontrol agents. A cellular and proteomic analysis of the effect of culture filtrate of three entomopathogenic fungi (EPF) species on the immune system of G. mellonella was performed. Treatment with Beauveria caledonica and Metarhizium anisopliae 96h culture filtrate facilitated a significantly increased yeast cell density in larvae (3-fold and 3...
May 22, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28545959/serpin-14-negatively-regulates-prophenoloxidase-activation-and-expression-of-antimicrobial-peptides-in-chinese-oak-silkworm-antheraea-pernyi
#10
Saima Kausar, Muhammad Nadeem Abbas, Cen Qian, Baojian Zhu, Yu Sun, Yuxuan Sun, Lei Wang, Guoqing Wei, Iram Maqsood, Chao-Liang Liu
Genes encoding proteins of serpins superfamily are widely distributed in invertebrates. In insects, serpins play important roles in regulating immune responses and other physiological processes. Here, we report the cloning and characterization of cDNA of Apserpin-14 from Chinese oak silkworm (Antheraea pernyi). The Apserpin-14 gene contains 1206 bp open reading frame, encoding a predicted 401 amino acid residue protein. We expressed the recombinant Apserpin-14 protein in Escherichia coli and then purified protein was used to prepare rabbit anti-Apserpin-14 polyclonal antibodies...
May 22, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28544681/tenebrio-molitor-gram-negative-binding-protein-3-tmgnbp3-is-essential-for-inducing-downstream-antifungal-tenecin-1-gene-expression-against-infection-with-beauveria-bassiana-jef-007
#11
Yi-Ting Yang, Mi Rong Lee, Se Jin Lee, Sihyeon Kim, Yu-Shin Nai, Jae Su Kim
The Toll signaling pathway is responsible for defense against both Gram-positive bacteria and fungi. Gram-negative binding protein 3 (GNBP3) has a strong affinity for the fungal cell wall component, β-1,3-glucan, which can activate the prophenoloxidase (proPO) cascade and induce the Toll signaling pathway. Myeloid differentiation factor 88 (MyD88) is an intracellular adaptor protein involved in the Toll signaling pathway. In this study, we monitored the response of 5 key genes (TmGNBP3, TmMyD88, and Tenecin 1, 2, and 3) in the Toll pathway of the mealworm Tenebrio molitor immune system against the fungus Beauveria bassiana JEF-007 using RT-PCR...
May 23, 2017: Insect Science
https://www.readbyqxmd.com/read/28533370/insect-pathogenic-fungus-interacts-with-the-gut-microbiota-to-accelerate-mosquito-mortality
#12
Ge Wei, Yiling Lai, Guandong Wang, Huan Chen, Fang Li, Sibao Wang
The insect gut microbiota plays crucial roles in modulating the interactions between the host and intestinal pathogens. Unlike viruses, bacteria, and parasites, which need to be ingested to cause disease, entomopathogenic fungi infect insects through the cuticle and proliferate in the hemolymph. However, interactions between the gut microbiota and entomopathogenic fungi are unknown. Here we show that the pathogenic fungus Beauveria bassiana interacts with the gut microbiota to accelerate mosquito death. After topical fungal infection, mosquitoes with gut microbiota die significantly faster than mosquitoes without microbiota...
June 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28515777/experimental-evolution-to-increase-the-efficacy-of-the-entomopathogenic-fungus-beauveria-bassiana-against-malaria-mosquitoes-effects-on-mycelial-growth-and-virulence
#13
Claudio A Valero-Jiménez, Jan A L van Kan, Constantianus J M Koenraadt, Bas J Zwaan, Sijmen E Schoustra
Entomopathogenic fungi such as Beauveria bassiana are currently considered as a potential control agent for malaria mosquitoes. The success of such strategies depends among others on the efficacy of the fungus to kill its hosts. As B. bassiana can use various resources for growth and reproduction, increasing the dependency on mosquitoes as a nutritional source may be instrumental for reaching this goal. Passage of entomopathogenic fungi through an insect host has been shown to increase its virulence. We evaluated the virulence, fungal outgrowth, mycelial growth rate, and sporulation rate of two B...
June 2017: Evolutionary Applications
https://www.readbyqxmd.com/read/28497337/identification-of-calmodulin-binding-proteins-in-the-entomopathogenic-fungus-beauveria-bassiana
#14
Jiyoung Kim, Junsang Oh, Deok-Hyo Yoon, Gi-Ho Sung
Calmodulin (CaM) is a primary Ca(2+) receptor and plays a pivotal role in a variety of cellular responses in eukaryotes. Even though a large number of CaM-binding proteins are well known in yeast, plants, and animals, little is known regarding CaM-targeted proteins in filamentous fungi. To identify CaM-binding proteins in filamentous fungi, we used a proteomics method coupled with co-immunoprecipitation (CoIP) and MALDI-TOF/TOF mass spectrometry (MS) in Beauveria bassiana. Through this method, we identified ten CaM-binding proteins in B...
May 11, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28485267/blue-light-induced-immunosuppression-in-bactrocera-dorsalis-adults-as-a-carryover-effect-of-larval-exposure
#15
K Tariq, M Noor, M Hori, A Ali, A Hussain, W Peng, C-J Chang, H Zhang
Detrimental effects of ultraviolet (UV) light on living organisms are well understood, little is known about the effects of blue light irradiation. Although a recent study revealed that blue light caused more harmful effects on insects than UV light and blue light irradiation killed insect pests of various orders including Diptera, the effects of blue light on physiology of insects are still largely unknown. Here we studied the effects of blue light irradiation on cuticular melanin in larval and the immune response in adult stage of Bactrocera dorsalis...
May 9, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28469160/differential-roles-for-six-p-type-calcium-atpases-in-sustaining-intracellular-ca-2-homeostasis-asexual-cycle-and-environmental-fitness-of-beauveria-bassiana
#16
Jie Wang, Xiao-Guan Zhu, Sheng-Hua Ying, Ming-Guang Feng
A global insight into the roles of multiple P-type calcium ATPase (CA) pumps in sustaining the life of a filamentous fungal pathogen is lacking. Here we elucidated the functions of five CA pumps (Eca1, Spf1 and PmcA/B/C) following previous characterization of Pmr1 in Beauveria bassiana, a fungal insect pathogen. The fungal CA pumps interacted at transcriptional level, at which singular deletions of five CA genes depressed eca1 expression by 76-98% and deletion of spf1 resulted in drastic upregulation of four CA genes by 36-50-fold...
May 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28444217/direct-and-indirect-effects-of-pesticides-on-the-insidious-flower-bug-hemiptera-anthocoridae-under-laboratory-conditions
#17
Nathan J Herrick, Raymond A Cloyd
Greenhouse producers are interested in integrating natural enemies along with pesticides to suppress western flower thrips, Frankliniella occidentalis (Pergande), populations. The insidious flower bug, Orius insidiosus (Say), is a commercially available natural enemy of western flower thrips. We conducted a series of laboratory experiments to determine the direct and indirect effects of 28 pesticides (insecticides, miticides, and fungicides), 4 pesticide mixtures, and 4 surfactants (36 total treatments plus a water control) on the adult O...
June 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28436337/molecular-cloning-expression-and-characterization-of-e2f-transcription-factor-4-from-antheraea-pernyi
#18
M N Abbas, S Kausar, Y-X Sun, Y Sun, L Wang, C Qian, G-Q Wei, B-J Zhu, C-L Liu
The E2F transcription factor family is distributed widely in eukaryotes and has been well studied among mammals. In the present study, the E2F transcription factor 4 (E2F4) gene was isolated from fat bodies of Antheraea pernyi and sequenced. E2F4 comprised a 795 bp open reading frame encoding a deduced amino acid sequence of 264 amino acid residues. The recombinant protein was expressed in Escherichia coli (Transetta DE3), and anti-E2F4 antibodies were prepared. The deduced amino acid sequence displayed significant homology to an E2F4-like protein from Bombyx mori L...
April 24, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28423416/beauveria-bassiana-ascomycota-hypocreales-introduced-as-an-endophyte-in-corn-plants-and-its-effects-on-consumption-reproductive-capacity-and-food-preference-of-dichroplus-maculipennis-orthoptera-acrididae-melanoplinae
#19
Sebastian A Pelizza, Yanina Mariottini, Leticia M Russo, M Florencia Vianna, Ana C Scorsetti, Carlos E Lange
In this study, the effects of strain Beauveria bassiana (LPSC 1067) as an endophyte in corn plants on consumption, fecundity, and food preference of Dichroplus maculipennis were examined. We observed that the daily consumption by grasshoppers fed with control plants was almost twice that of those that were fed treated plants. Significant differences in fecundity of grasshoppers that were fed with treated plants compared with those that only fed on control plants were also observed. The number of eggs laid per female fed with control plants was 27...
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28423414/discovery-development-and-evaluation-of-a-horn-fly-isolated-diptera-muscidae-beauveria-bassiana-hypocreales-cordyciptaceae-strain-from-florida-usa
#20
Christopher J Holderman, Lois A Wood, Christopher J Geden, Phillip E Kaufman
The horn fly, Haematobia irritans (L.) is an important cattle pest and traditionally has been managed using insecticides; however, many horn fly populations are insecticide-resistant in United States. Use of alternative control techniques has been limited because of the challenges of managing a fly pest on pastured cattle. After the discovery of a wild horn fly infected with Beauveria bassiana in Florida, the fungus was cultured and evaluated for efficacy against laboratory-reared horn flies. This fungal strain was selected for increased virulence by passage through laboratory-reared horn fly hosts to shorten interval from infection to fly death and subsequent conidia formation, properties important to future use of the fungus as a biological control agent against horn flies...
January 1, 2017: Journal of Insect Science
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