نتایج جستجو برای: metarhizium

تعداد نتایج: 1337  

2012
Wanida Petlamul Poonsuk Prasertsan

Ten strains of the entomopathogenic fungi Metarhizium anisopliae and Beauveria bassiana were evaluated to find the most effective strain for optimization studies. The first criterion tested for strain selection was the mortality (> 50%) of Spodoptera litura larvae after inoculation of the fungus for 4 days. Results on several bioassays revealed that B. bassiana BNBCRC showed the most virulence ...

2016
Mona Sharififard Mohammad Saeed Mossadegh Babak Vazirianzadeh Seyed Mahmood Latifi

BACKGROUND Considering to the high distribution of cockroaches as urban pests, the efficacy of different formulations of Metarhizium anisopliae strain Iran 437C were assessed against the brown-banded cockroach, Supella longipalpa F. under laboratory and field conditions. METHODS Metarhizium anisopliae isolates were screened with immersing adults of the brown-banded cockroachs in aqueous suspe...

2014
Bethany P. J. Greenfield Alex M. Lord Ed Dudley Tariq M. Butt

Adhesion of conidia of the insect pathogenic fungus, Metarhizium anisopliae, to the arthropod host cuticle initially involves hydrophobic forces followed by consolidation facilitated by the action of extracellular enzymes and secretion of mucilage. Gene expression analysis and atomic force microscopy were used to directly quantify recognition and adhesion between single conidia of M. anisopliae...

Journal: :Acta biochimica Polonica 2013
Sylwia Różalska Julia Pawłowska Marta Wrzosek Cezary Tkaczuk Jerzy Długoński

Nonylphenol (4-NP) is a xenobiotic classified as an endocrine disrupting compound with an ability to interfere with hormonal systems of numerous organisms including humans. It is widely distributed not only in aquatic but also in terrestrial systems. The aim of this study was to evaluate the ability of cosmopolitan fungus Metarhizium (commonly persistent in soil as a facultative insect pathogen...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2010
G Poletto A J Benedetti N M Barros L R B Vargas A Specht

Aiming to contribute to knowledge of the immature instars of Neotropical Lepidoptera, this study details the morphology of the egg and last instar larvae of Aucula magnifica (Schaus, 1904) (Lepidoptera: Noctuidae: Agaristinae), emphasising the structures of the corium and the chaetotaxy. There is also a report of the occurrence of entomopathogenic action of Nomuraea rileyi (Farlow) Samson fungi...

2011
Qiang Gao Kai Jin Sheng-Hua Ying Yongjun Zhang Guohua Xiao Yanfang Shang Zhibing Duan Xiao Hu Xue-Qin Xie Gang Zhou Guoxiong Peng Zhibing Luo Wei Huang Bing Wang Weiguo Fang Sibao Wang Yi Zhong Li-Jun Ma Raymond J. St. Leger Guo-Ping Zhao Yan Pei Ming-Guang Feng Yuxian Xia Chengshu Wang

Metarhizium spp. are being used as environmentally friendly alternatives to chemical insecticides, as model systems for studying insect-fungus interactions, and as a resource of genes for biotechnology. We present a comparative analysis of the genome sequences of the broad-spectrum insect pathogen Metarhizium anisopliae and the acridid-specific M. acridum. Whole-genome analyses indicate that th...

1999
D. B. Jaccoud W. O. H. Hughes C. W. Jackson

There is growing interest in the use of entomopathogenic organisms to control leaf-cutting ants (Hymenoptera: Formicidae: Attini). However, the way leaf-cutting ants react as a colony to biohazards is poorly understood. We investigated the effects of Metarhizium anisopliae (Metschnikoff) (Deuteromycotina: Hyphomycetes) applied to the foraging arenas of mini-nests (queenless sub-colonies) of the...

2016
Guangchun Cao Miao Jia Xia Zhao Lei Wang Xiongbing Tu Guangjun Wang Xiangqun Nong Zehua Zhang

BACKGROUND Metarhizium is an important class of entomopathogenic fungi in the biocontrol of insects, but its virulence is affected by insect immunity. To clarify the mechanism in virulence of Metarhizium, we compared the immunological differences in Locusta migratoria L. when exposed to two strains of Metarhizium anisopliae (Ma). RESULTS The virulence of Ma IMI330189 was significantly higher ...

Journal: :The American journal of tropical medicine and hygiene 2009
Jonathan M Darbro Matthew B Thomas

Entomopathogenic fungi, such as Metarhizium anisopliae and Beauveria bassiana, are being researched as alternatives to chemical adulticides to control mosquito vectors of malaria and dengue. Two cited concerns of fungal control include conidial viability and risks fungal entomopathogens pose to human health. We measured spore viability of 10 fungal isolates over 26 weeks and found a range of pe...

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