نتایج جستجو برای: toxa

تعداد نتایج: 197  

Journal: :Molecular Plant-Microbe Interactions® 2004

Journal: :Molecular Plant-Microbe Interactions® 2007

Journal: :Microbiology 2006
Kristen J Kanack Laura J Runyen-Janecky Evan P Ferrell Sang-Jin Suh Susan E H West

Vfr, a global regulator of Pseudomonas aeruginosa virulence factors, is a homologue of the Escherichia coli cAMP receptor protein, CRP. Vfr is 91% similar to CRP and maintains many residues important for CRP to bind cAMP, bind DNA, and interact with RNA polymerase at target promoters. While vfr can complement an E. coli crp mutant in beta-galactosidase production, tryptophanase production and c...

زمینه و هدف: شیر به‌علت ارزش غذایی بالا، در تغذیه انسان نقش به‌سزایی دارد و از طرفی، محیط مناسبی برای رشد باکتری‌هایی چون سودوموناس آئروژینوزا است. سودوموناس آئروژینوزا، پاتوژن فرصت‌طلبی است که مقاومت بالایی نسبت به آنتی‌بیوتیک‌ها داشته و می‌تواند در بیماران دچار نقص سیستم ایمنی، ایجاد بیماری ‌کند. این تحقیق با هدف جداسازی سودوموناس آئروژینوزا از شیرخام، ردیابی ژن toxA در جدایه‌ها با روش PCR و ...

Journal: :iranian journal of microbiology 0
v s nikbin department of microbiology, pasteur institute of iran, iran. m m aslani department of microbiology, pasteur institute of iran, iran. z sharafi department of microbiology, pasteur institute of iran, iran. m hashemipour department of microbiology, pasteur institute of iran, iran. f shahcheraghi department of microbiology, pasteur institute of iran, iran. g h ebrahimipour department of biology, shahid beheshti university, iran.

background and objectives: pseudomonas aeruginosa possesses a variety of virulence factors that may contribute to its pathogenicity. the aim of this study was to evaluate opri , oprl and toxa genes for pcr identification of clinical p. aeruginosa . in order to find out any relation between special virulence factors and special manifestation of p. aeruginosa infections, we detected virulence fac...

2014
Laxmi Narayan Sarangi Adyasha Priyadarshini Santosh Kumar Prasad Thomas Santosh Kumar Gupta Viswas Konasagara Nagaleekar Vijendra Pal Singh

In this study, 108 P. multocida isolates recovered from various host animals such as cattle, buffalo, swine, poultry (chicken, duck, and emu) and rabbits were screened for carriage of 8 virulence associated genes. The results revealed some unique information on the prevalence of virulence associated genes among Indian isolates. With the exception of toxA gene, all other virulence associated gen...

Journal: :Journal of clinical microbiology 1994
S Nagai S Someno T Yagihashi

A PCR assay was developed for the differentiation of toxigenic Pasteurella multocida subsp. multocida strains, the major etiologic agent for progressive atrophic rhinitis in pigs, from nontoxigenic strains. The PCR targeted a toxA gene encoding a 143-kDa dermonecrotic toxin that is considered to be the central etiologic factor in progressive atrophic rhinitis. toxA fragments were amplified from...

Journal: :Phytopathology 2010
Xiao-Chun Sun William Bockus Guihua Bai

Tan spot, caused by Pyrenophora tritici-repentis, is an economically important foliar disease of wheat worldwide. Eight races of the pathogen have been characterized on the basis of their ability to cause necrosis or chlorosis in a set of differential wheat lines. Race 1 produces two host-selective toxins, Ptr ToxA and Ptr ToxC, that induce necrosis and chlorosis, respectively, on leaves of sen...

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