نتایج جستجو برای: arthrobotrys oligospora

تعداد نتایج: 188  

2005
R. K. Singh Niranjan Kumar K. P. Singh

Most commonly occurring predacious fungus Arthrobotrys oligospora showed great variation in size and shape of conidia on some media. The formation of larger conidia was recorded on beef extract and nutrient agar media. The length of conidia in Richard's YPSS, Sabouraud's, PDA and corn meal agar media was of medium size while smaller conidia were produced on Czapek's, Jensen's, Martin's medium. ...

2015
I J T A Delisha Patel Ramesh Pandit Anju Kunjadia

Two nematode trapping fungi were isolated from aerated soil samples collected fron Anand district( Gujarat) India and identified on the basis of their culture –morphological characteristics and 18S rRNA gene sequencing as Arthrobotrys oligospora and Duddingtonia flagrans . These fungal isolates were assessed for their trapping efficiency further. Trapping structures such as ring like structures...

2013
Marc Stadler Heidrun Anke

The isolation, structural elucidation and biological activities of oligosporon (1), oligosporol A (2) and oligosporol B (3), three new antibiotics from cultures of the predacious deuteromycete, Arthrobotrys oligospora, are reported. The structures were elucidated by means of high resolution mass and high field N M R spectroscopy. The compounds exhibited weak antimicro­ bial, cytotoxic and hemol...

2017
Yen-Ping Hsueh Matthew R Gronquist Erich M Schwarz Ravi David Nath Ching-Han Lee Shalha Gharib Frank C Schroeder Paul W Sternberg

To study the molecular basis for predator-prey coevolution, we investigated how Caenorhabditis elegans responds to the predatory fungus Arthrobotrys oligospora. C. elegans and other nematodes were attracted to volatile compounds produced by A. oligospora. Gas-chromatographic mass-spectral analyses of A. oligospora-derived volatile metabolites identified several odors mimicking food cues attract...

2014
Xin Wang Guo-Hong Li Cheng-Gang Zou Xing-Lai Ji Tong Liu Pei-Ji Zhao Lian-Ming Liang Jian-Ping Xu Zhi-Qiang An Xi Zheng Yue-Ke Qin Meng-Qing Tian You-Yao Xu Yi-Cheng Ma Ze-Fen Yu Xiao-Wei Huang Shu-Qun Liu Xue-Mei Niu Jin-Kui Yang Ying Huang Ke-Qin Zhang

In their natural habitat, bacteria are consumed by bacterivorous nematodes; however, they are not simply passive preys. Here we report a defensive mechanism used by certain bacteria to mobilize nematode-trapping fungi to kill nematodes. These bacteria release urea, which triggers a lifestyle switch in the fungus Arthrobotrys oligospora from saprophytic to nematode-predatory form; this predaciou...

Ali Eslami, Majid Ebrahimi, Masoomeh Shams Ghahfarokhi, Mehdi Razzaghi Abyaneh, Rasoul Zare, Shahrokh Ranjbar Bahadori,

Over one-year period, 150 pasture soil samples and 138 sheep faecal samples, collected from different parts of Iran were screened for the presence of nematophagous fungi. The samples were cultured at 25ºC on chloramphenicol-2% water agar (CHF-WA) plates in the presence of Haemonchus contortus third stage larvae (L3) and checked over a two-month period for characteristic conidia, conidiophores a...

Journal: :Applied and environmental microbiology 1984
D Premachandran D Pramer

An N-acetylgalactosamine-specific protein was purified from mycelial homogenates of the nematode-trapping fungus Arthrobotrys oligospora by using affinity chromatography. The molecular weight of the protein was estimated at 22,000 by its comparative mobility on sodium dodecyl sulfate-polyacrylamide slab gels. Pretreatment of nematodes with the purified protein reduced entrapment, indicating a r...

Journal: :Revista iberoamericana de micologia 2015
Carlos Alfredo Saumell Alicia Silvina Fernández Luis Alberto Fusé Manuela Rodríguez María Federica Sagüés Lucía Emilia Iglesias

BACKGROUND Biological control of gastrointestinal nematodes of ruminants by use of nematophagous fungi would become part of any livestock parasite integral control system. Identifying autochthonous species that could then be selected for mass production is an important phase in the practical use of biological control. AIMS To search for nematophagous fungi with potential use as biological con...

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