نتایج جستجو برای: puccinia striiformis fsp tritici

تعداد نتایج: 3754  

Journal: :Phytopathology 2010
Yue Jin Les J Szabo Martin Carson

The life history of Puccinia striiformis remains a mystery because the alternate host has never been identified. Inoculation of grasses using aeciospores from naturally infected Berberis chinensis and B. koreana resulted in infection on Poa pratensis, producing uredinia typical of stripe rust caused by P. striiformis. Analyses using real-time polymerase chain reaction and DNA sequence confirmed...

Journal: :Phytopathology 2005
Vihanga Pahalawatta Xianming Chen

ABSTRACT Most barley cultivars are resistant to stripe rust of wheat that is caused by Puccinia striiformis f. sp. tritici. The barley cv. Steptoe is susceptible to all identified races of P. striiformis f. sp. hordei (PSH), the barley stripe rust pathogen, but is resistant to most P. striiformis f. sp. tritici races. To determine inheritance of the Steptoe resistance to P. striiformis f. sp. t...

Journal: :Molecular ecology resources 2011
Malvina Andris M C Arias Brandon L Barthel Burton H Bluhm Joël Bried D Canal X M Chen P Cheng Marina B Chiappero Manuela M Coelho Angela B Collins M Dash Michelle C Davis Margarida Duarte Marie-Pierre Dubois E Françoso M A Galmes Keshni Gopal Philippe Jarne Martin Kalbe Leszek Karczmarski Hun Kim Mónica B Martella Richard S McBride Valeria Negri J J Negro Annakay D Newell Ana F Piedade Cecilia Puchulutegui Lorenzo Raggi Irene E Samonte J H Sarasola D R See Seifu Seyoum Mónica C Silva C Solaro Krystal A Tolley Michael D Tringali A Vasemägi L S Xu J I Zanón-Martínez

This article documents the addition of 171 microsatellite marker loci and 27 pairs of single nucleotide polymorphism (SNP) sequencing primers to the Molecular Ecology Resources Database. Loci were developed for the following species: Bombus pauloensis, Cephalorhynchus heavisidii, Cercospora sojina, Harpyhaliaetus coronatus, Hordeum vulgare, Lachnolaimus maximus, Oceanodroma monteiroi, Puccinia ...

Journal: :Phytopathology 2005
Vihanga Pahalawatta Xianming Chen

ABSTRACT Stripe rust is one of the most important diseases of wheat and barley worldwide. On wheat it is caused by Puccinia striiformis f. sp. tritici and on barley by P. striiformis f. sp. hordei Most wheat genotypes are resistant to P. striiformis f. sp. hordei and most barley genotypes are resistant to P. striiformis f. sp. tritici. To determine the genetics of resistance in wheat to P. stri...

2014
Gangming Zhan Yuan Tian Fuping Wang Xianming Chen Jun Guo Min Jiao Lili Huang Zhensheng Kang

Puccinia striiformis f. sp. tritici (Pst), the causal fungus of wheat stripe rust, was previously reported to be infected by Lecanicillium lecanii, Microdochium nivale and Typhula idahoensis. Here, we report a novel hyperparasite on Pst. This hyperparasitic fungus was identified as Cladosporium cladosporioides (Fresen.) GA de Vries based on morphological characteristics observed by light and sc...

ژورنال: :فصلنامه علمی پژوهشی دنیای میکروب ها 2010
علیرضا نیازمند فرزاد افشاری

سابقه و هدف: بیماری زنگ زرد گندم از بیماری های مهم گندم است که بر حسب شرایط آب و هوایی و در طی سال های مختلف جمعیت های آن دارای تنوع پاتوتایپی زیادی می باشد. هدف از این پژوهش، تعیین پاتوتایپ های قارچ عامل بیماری در مناطق مختلف آب و هوایی ایران و بررسی تغییرات پاتوتایپ ها در طی دو سال متوالی می باشد. مواد و روش ها: در بهار سال های 1387 و 1388، تعداد 29 جدایه زنگ زرد بر اساس پراکندگی و شرایط آب و...

Journal: :Journal of applied genetics 2001
J Chełkowski L Stepień

Over 100 genes of resistance to rust fungi: Puccinia recondita f. sp. tritici, (47 Lr - leaf rust genes), P. striiformis (18 Yr - yellow rust genes) and P. graminis f. sp. tritici (41 Sr - stripe rust genes) have been identified in wheat (Triticum aestivum L.) and its wild relatives according to recent papers. Sixteen Lr resistance genes have been mapped using restriction fragments length polym...

2008
Jin Y

Race Ug99 of Puccinia graminis f. sp. tritici, recognized for possessing virulence to Sr31, was first reported in Uganda in 1999 (Pretorius et al., 2000). Based on the North American stem rust nomenclature system of 16 differential lines (Roelfs and Martens, 1988; Roelfs et al., 1993), Ug99 is identified as race TTKS (Wanyera et al., 2006). Isolates with virulence similar to Ug99 were identifie...

2005
X. M. Chen

Stripe rust of wheat, caused by Puccinia striiformis f. sp. tritici, is one of the most important diseases of wheat worldwide. This review presents basic and recent information on the epidemiology of stripe rust, changes in pathogen virulence and population structure, and movement of the pathogen in the United States and around the world. The impact and causes of recent epidemics in the United ...

2017
Vanessa Bueno-Sancho Antoine Persoons Amelia Hubbard Luis Enrique Cabrera-Quio Clare M Lewis Pilar Corredor-Moreno Daniel C E Bunting Sajid Ali Soonie Chng David P Hodson Ricardo Madariaga Burrows Rosie Bryson Jane Thomas Sarah Holdgate Diane G O Saunders

Recent disease outbreaks caused by (re-)emerging plant pathogens have been associated with expansions in pathogen geographic distribution and increased virulence. For example, in the past two decades' wheat yellow (stripe) rust, Puccinia striiformis f. sp. tritici, has seen the emergence of new races that are adapted to warmer temperatures, have expanded virulence profiles, and are more aggress...

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