keyword
MENU ▼
Read by QxMD icon Read
search

Beauveria bassiana

keyword
https://www.readbyqxmd.com/read/27933578/inhibitory-activity-of-beauveria-bassiana-and-trichoderma-spp-on-the-insect-pests-xylotrechus-arvicola-coleoptera-cerambycidae-and-acanthoscelides-obtectus-coleoptera-chrisomelidae-bruchinae
#1
Álvaro Rodríguez-González, Sara Mayo, Óscar González-López, Bonifacio Reinoso, Santiago Gutierrez, Pedro Antonio Casquero
Xylotrechus arvicola is an important pest in vineyards (Vitis vinifera) in the main Iberian wine-producing regions, and Acanthoscelides obtectus causes severe post-harvest losses in the common bean (Phaseolus vulgaris). Under laboratory conditions with a spray tower, the susceptibility of the immature stages of X. arvicola and A. obtectus against the entomopathogenic fungi Beauveria bassiana and four strains of Trichoderma spp. was evaluated. Both insect pests T. harzianum and B. bassiana showed a good inhibitory activity, accumulating an inhibition on the eggs of values above 85 and 82%, respectively...
January 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27914926/metschnikowia-cf-typographi-and-other-pathogens-from-the-bark-beetle-ips-sexdentatus-prevalence-histological-and-ultrastructural-evidence-and-molecular-characterization
#2
Regina G Kleespies, Young Woon Lim, Cezary Tkaczuk, Marta Wrzosek, Bernhardt M Steinwender, Rudolf Wegensteiner
Ips sexdentatus (Six-spined engraver beetle) from Austria and Poland were dissected and examined for the presence of pathogens. Specimens collected in Austria were found to contain the ascomycetous fungus Metschnikowia cf. typographi. Infection rates ranged from 3.6% to 26.8% at different collection sites. M. cf. typographi infected midguts were investigated by histological, ultrastructural and molecular techniques. Extraordinary ultrastructural details are shown, such as ascospores with bilateral flattened flanks resembling alar rims at both sides of their attenuating tube-like ends...
November 30, 2016: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/27905873/comparative-genomics-of-beauveria-bassiana-uncovering-signatures-of-virulence-against-mosquitoes
#3
Claudio A Valero-Jiménez, Luigi Faino, Daphne Spring In't Veld, Sandra Smit, Bas J Zwaan, Jan A L van Kan
BACKGROUND: Entomopathogenic fungi such as Beauveria bassiana are promising biological agents for control of malaria mosquitoes. Indeed, infection with B. bassiana reduces the lifespan of mosquitoes in the laboratory and in the field. Natural isolates of B. bassiana show up to 10-fold differences in virulence between the most and the least virulent isolate. In this study, we sequenced the genomes of five isolates representing the extremes of low/high virulence and three RNA libraries, and applied a genome comparison approach to uncover genetic mechanisms underpinning virulence...
December 1, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27889557/identification-of-a-hemolin-protein-from-actias-selene-mediates-immune-response-to-pathogens
#4
Cen Qian, Fang Wang, Baojian Zhu, Lei Wang, Guoqing Wei, Yu Sun, Sheng Li, Chaoliang Liu
Hemolins play an important role in development and innate immunity in insects. In this study, a hemolin cDNA of 1412bp in Actias selene (As-HEM) was isolated and its open reading frames (ORFs) were 420 amino acid residues. Sequence analysis indicated As-HEM was homologous to those hemolins from other insects species. The recombinant protein of As-HEM was expressed in Escherichia coli, and anti-As-HEM antibodies were prepared. Real-time quantitative PCR (RT-qPCR) and western blot results revealed that mRNA and protein levels of As-HEM were mostly detected in hemocytes and hemolymph...
November 24, 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27867018/chitin-synthase-1-gene-is-crucial-to-antifungal-host-defense-of-the-model-beetle-tribolium-castaneum
#5
Yuuki Hayakawa, Daiki Kato, Katsumi Kamiya, Chieka Minakuchi, Ken Miura
The importance of the insect cuticle as a primary protective barrier against entomopathogens has long been noted. In the present study, we addressed this issue by utilizing an experimental infection system composed of the model beetle T. castaneum and two entomopathogenic fungal species, Beauveria bassiana and Metarhizium anisopliae. The pupae were relatively susceptible to these fungi by the natural route of infection, with some refractoriness developed with age, while the adults exhibited much higher refractoriness...
November 17, 2016: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/27855217/screening-of-fungi-for-biological-control-of-a-triatomine-vector-of-chagas-disease-temperature-and-trypanosome-infection-as-factors
#6
Aline R M Garcia, Adriana de Paula Rocha, Camila C Moreira, Silma L Rocha, Alessandra A Guarneri, Simon L Elliot
Entomopathogenic fungi have been investigated as an alternative tool for controlling various insects, including triatomine vectors of the protozoan Trypanosoma cruzi, the etiological agent of Chagas disease. Here we tested the pathogenicity and virulence of ten isolates of the fungi Metarhizium spp. and Beauveria bassiana against Rhodnius prolixus and found all of the isolates to be virulent. We used two isolates (URPE-11 Metarhizium anisopliae and ENT-1 Beauveria bassiana) for further screening based on their prolific sporulation in vitro (an important property of fungal biopesticides)...
November 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27836665/expression-profiling-of-bombyx-mori-gloverin2-gene-and-its-synergistic-antifungal-effect-with-cecropin-a-against-beauveria-bassiana
#7
Dingding Lü, Tao Geng, Chengxiang Hou, Guangxing Qin, Kun Gao, Xijie Guo
Gloverin2 is a cationic and glycine-rich antimicrobial peptide whose expression can be induced in fat body of silkworm (Bombyx mori) larvae exposed to bacteria. The purpose of this study is to identify the roles of Bombyx mori gloverin2 (Bmgloverin2) during entomopathogenic fungus Beauveria bassiana infection. Fluorescent quantitative real-time PCR analysis indicated that the relative expression level of Bmgloverin2 gene was up-regulated in the silkworm larvae infected by B. bassiana. The cDNA of Bmgloverin2 was cloned from the silkworm by RT-PCR and the DNA segment of the Bmgloverin2 peptide (without signal peptide sequence) was inserted into pCzn1 expression plasmid and expressed in E...
November 9, 2016: Gene
https://www.readbyqxmd.com/read/27830375/erratum-to-highly-virulent-beauveria-bassiana-strains-against-the-two-spotted-spider-mite-tetranychus-urticae-show-no-pathogenicity-against-five-phytoseiid-mite-species
#8
Shengyong Wu, Haicui Xie, Maoye Li, Xuenong Xu, Zhongren Lei
No abstract text is available yet for this article.
November 9, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27809973/essential-oils-and-beauveria-bassiana-against-dermanyssus-gallinae-acari-dermanyssidae-towards-new-natural-acaricides
#9
Davide Immediato, Luciana Aguiar Figueredo, Roberta Iatta, Antonio Camarda, Rafaela Lira Nogueira de Luna, Annunziata Giangaspero, Sinval Pinto Brandão-Filho, Domenico Otranto, Claudia Cafarchia
Essential oils (EOs) and entomopathogenic fungi such as Beauveria bassiana (Bb) strains have the potential to be used as alternative insecticides and acaricides for controlling ectoparasites as Dermanyssus gallinae. These compounds have some limitations in their use: the acaricidal effect of EOs is rapid, but short-lived, whilst that of Bb is delayed, but long-lived. To evaluate the effect of both compounds combined against D. gallinae, the non-toxic dose of Eucalyptus globulus, Eucalyptus citriodora, Thymus vulgaris and Eugenia caryophyllata essential oils were firstly calculated for "native" strains of Bb...
October 15, 2016: Veterinary Parasitology
https://www.readbyqxmd.com/read/27799921/high-ozone-o3-affects-the-fitness-associated-with-the-microbial-composition-and-abundance-of-q-biotype-bemisia-tabaci
#10
Yanyun Hong, Tuyong Yi, Xiaoling Tan, Zihua Zhao, Feng Ge
Ozone (O3) affects the fitness of an insect, such as its development, reproduction and protection against fungal pathogens, but the mechanism by which it does so remains unclear. Here, we compared the fitness (i.e., the growth and development time, reproduction and protection against Beauveria bassiana (B. bassiana) of Q biotype whiteflies fumigated under hO3 (280 ± 20 ppb) and control O3 (50 ± 10 ppb) concentrations. Moreover, we determined that gene expression was related to development, reproduction and immunity to B...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27789295/effect-of-stress-on-heat-shock-protein-levels-immune-response-and-survival-to-fungal-infection-of-mamestra-brassicae-larvae
#11
E H Richards, M P Dani, Y Lu, T Butt, R J Weaver
Although the utilisation of fungal biological control agents to kill insect pests is desirable, it is known that the outcome of infection may be influenced by a number of criteria, including whether or not the target insect is stressed. In the current work, topical treatment of larvae of the lepidopteran pest, Mamestra brassicae, with conidia of Beauveria bassiana, followed by a heat stress (HS; 37°C for 1h) 48h later, resulted in a similar level of larval survival to that occurring for no heat stress (No-HS), fungus-treated larvae...
October 24, 2016: Journal of Insect Physiology
https://www.readbyqxmd.com/read/27784935/evaluation-of-pathogenicity-of-the-fungi-metarhizium-anisopliae-and-beauveria-bassiana-in-hazelnut-weevil-curculio-nucum-l-coleoptera-curculionidae-larvae
#12
Yunqing Cheng, Ting Liu, Yixin Zhao, Wanting Geng, Longtao Chen, Jianfeng Liu
The nut weevil (Curculio nucum) is one of the most important and widespread pests in hazelnut orchards. In order to screen entomopathogenic fungal strains with high virulence against C. nucum, the growth rate, sporulation, and cumulative mortality of different Metarhizium anisopliae and Beauveria bassiana strains were investigated, and the process by which M. anisopliae CoM 02 infects C. nucum larvae was observed using scanning electron microscopy. The results indicated that the growth rate and sporulation of different fungal strains significantly differed...
December 2016: Indian Journal of Microbiology
https://www.readbyqxmd.com/read/27783179/highly-virulent-beauveria-bassiana-strains-against-the-two-spotted-spider-mite-tetranychus-urticae-show-no-pathogenicity-against-five-phytoseiid-mite-species
#13
Shengyong Wu, Haicui Xie, Maoye Li, Xuenong Xu, Zhongren Lei
Entomopathogenic fungi and predatory mites can independently contribute to suppressing the two-spotted spider mite, Tetranychus urticae Koch. It is important to assess the risk of possible fungal infections in predators when a combination of them are being considered as a tandem control strategy for suppressing T. urticae. The first part of this study tested 12 Beauveria bassiana isolates for virulence in T. urticae. Strains SCWJ-2, SDDZ-9, LNSZ-26, GZGY-1-3 and WLMQ-32 were found to be the most potent, causing 37...
October 25, 2016: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27781284/effects-of-four-commercial-fungal-formulations-on-mortality-and-sporulation-in-house-flies-musca-domestica-and-stable-flies-stomoxys-calcitrans
#14
E N I Weeks, E T Machtinger, S A Gezan, P E Kaufman, C J Geden
The house fly Musca domestica L. (Diptera: Muscidae) and stable fly Stomoxys calcitrans (L.) (Diptera: Muscidae) are major pests of livestock. Biological control is an important tool in an integrated control framework. Increased mortality in filth flies has been documented with entomopathogenic fungi, several strains of which are commercially available. Three strains of Beauveria bassiana (Balsamo-Crivelli) Vuillemin (Hypocreales: Cordycipitaceae) and one strain of Metarhizium brunneum (Petch) (Hypocreales: Clavicipitaceae) were tested in commercial formulations for pathogenicity against house flies and stable flies...
October 26, 2016: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/27754403/label-free-differential-proteomics-and-quantification-of-exoenzymes-from-isolates-of-the-entomopathogenic-fungus-beauveria-bassiana
#15
Giuseppe Dionisio, Per Kryger, Tove Steenberg
Beauveria bassiana is an entomopathogenic fungus that grows both in vivo and in vitro. In vivo it can colonize live insect hosts, and tissue digestion occurs by secreted hydrolytic exoenzymes. It can also colonize dead insect tissue provided this is free from competing microorganisms. Depending on whether the host is alive or dead the expression (quality/quantity) of the exoenzymes may vary. We have grown several isolates of B. bassiana in shaking flasks for 120 h at 25 °C in order to evaluate the maximal exoenzyme production using two diet regimes...
October 14, 2016: Insects
https://www.readbyqxmd.com/read/27722917/the-c-terminal-mir-containing-region-in-the-pmt1-o-mannosyltransferase-restrains-sporulation-and-is-dispensable-for-virulence-in-beauveria-bassiana
#16
Zhangjiang He, Linli Luo, Nemat O Keyhani, Xiaodong Yu, Shenghua Ying, Yongjun Zhang
Protein O-mannosyltransferases (Pmts) belong to a highly conserved protein family responsible for the initiation of O-glycosylation of many proteins. Pmts contain one dolichyl-phosphate-mannose-protein mannosyltransferases (PMT) domain and three MIR motifs (mannosyltransferase, inositol triphosphate, and ryanodine receptor) that are essential for activity in yeast. We report that in the insect fungal pathogen, Beauveria bassiana, deletion of the C-terminal Pmt1 MIR-containing region (Pmt1∆ (311-902)) does not alter O-mannosyltransferase activity, but does increase total cell wall protein O-mannosylation levels and results in phenotypic changes in fungal development and cell wall stability...
October 8, 2016: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27702563/bioprospecting-for-secondary-metabolites-in-the-entomopathogenic-bacterium-photorhabdus-luminescens-subsp-sonorensis
#17
Rousel A Orozco, István Molnár, Helge Bode, S Patricia Stock
Crude extracts of in vitro and in vivo cultures of two strains of Photorhabdus l. sonorensis (Enterobacteriaceae) were analyzed by TLC, HPLC-UV and LC-MS. Nine unique compounds with mass/charge ratios (m/z) ranging from 331.3 to 713.5 were found in MS analyses. Bioactivity of extracts was assessed on a selection of plant pathogens/pests and non-target species. Caborca strain extracts showed the highest activity against Helicoverpa zea (Lepidoptera: Noctuidae) neonates at all concentrations tested. Mortality ranged from 11% (at 10μg/ml) to 37% (at 40μg/ml)...
November 2016: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/27693652/responses-to-abiotic-environmental-stresses-among-phylloplane-and-soil-isolates-of-beauveria-bassiana-from-two-holm-oak-ecosystems
#18
María Fernández-Bravo, Inmaculada Garrido-Jurado, Pablo Valverde-García, Jürg Enkerli, Enrique Quesada-Moraga
The response of entomopathogenic mitosporic ascomycete (EMAs) to abiotic stresses might be adapted to the microhabitats in which they inhabit. In phylloplane, these organisms are more exposed to such stresses than they are in soil, which may have led to adaptation to this environment. In the present work, we investigate whether Beauveria bassiana genotype or isolation habitat, i.e., soil or phylloplane, within the same geographic area influences their responses to key environmental stresses, such as temperature, moisture and ultraviolet radiation (UV-B), which can affect their successful use in microbial control...
November 2016: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/27693371/jak-stat-signaling-pathway-mediated-immune-response-in-silkworm-bombyx-mori-challenged-by-beauveria-bassiana
#19
Tao Geng, Ding-Ding Lv, Yu-Xia Huang, Cheng-Xiang Hou, Guang-Xing Qin, Xi-Jie Guo
Innate immunity was critical in insects defensive system and able to be induced by Janus kinase/signal transducer and activator of transcription cascade transduction (JAK/STAT) signaling pathway. Currently, it had been identified many JAK/STAT signaling pathway-related genes in silkworm, but little function was known on insect innate immunity. To explore the roles of JAK/STAT pathway in antifungal immune response in silkworm (Bombyx mori) against Beauveria bassiana infection, the expression patterns of B. mori C-type lectin 5 (BmCTL5) and genes encoding 6 components of JAK/STAT signaling pathway in silkworm challenged by B...
December 20, 2016: Gene
https://www.readbyqxmd.com/read/27681741/how-to-start-with-a-clean-crop-biopesticide-dips-reduce-populations-of-bemisia-tabaci-hemiptera-aleyrodidae-on-greenhouse-poinsettia-propagative-cuttings
#20
Rosemarije Buitenhuis, Michael Brownbridge, Angela Brommit, Taro Saito, Graeme Murphy
(1) Global movement of propagative plant material is a major pathway for introduction of Bemisia tabaci (Hemiptera: Aleyrodidae) into poinsettia greenhouses. Starting a poinsettia crop with high pest numbers disrupts otherwise successful biological control programs and widespread resistance of B. tabaci against pesticides is limiting growers' options to control this pest; (2) This study investigated the use of several biopesticides (mineral oil, insecticidal soap, Beauveria bassiana, Isaria fumosorosea, Steinernema feltiae) and combinations of these products as immersion treatments (cutting dips) to control B...
2016: Insects
keyword
keyword
85532
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"