نتایج جستجو برای: blumeria graminis f sp tritici
تعداد نتایج: 420317 فیلتر نتایج به سال:
Race-specific resistance genes protect the global wheat crop from stem rust disease caused by Puccinia graminis f. sp. tritici (Pgt) but are often overcome owing to evolution of new virulent races of the pathogen. To understand virulence evolution in Pgt, we identified the protein ligand (AvrSr50) recognized by the Sr50 resistance protein. A spontaneous mutant of Pgt virulent to Sr50 contained ...
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...
A molecular-marker linkage map of hexaploid wheat (Triticum aestivum L. em. Thell) provides a framework for integration with teh classical genetic map and a record of the chromosomal rearrangements involved in the evolution of this crop species. We have constructed restriction fragment length polymorphism (RFLP) maps of the A-, B-, and D-genome chromosomes of homoeologous groups 4, 5, and 7 of ...
The Volga region is one of the main grain-producing regions Russia. Wheat stem rust caused by Puccinia graminis f. sp. tritici among most destructive fungal diseases wheat. Recently, its harmfulness has increased in region. In this regard, an analysis resistance and diversity Sr genes Russian wheat cultivars necessary. work, 126 (including 23 durum 103 bread cultivars) approved for use were eva...
Recently, the octameric vesicle-tethering complex exocyst was found in plants and its importance for Arabidopsis morphogenesis was demonstrated. Exo70 exocyst subunits in plants, unlike in yeasts and mammals, are represented by a multigene family, comprising 23 members in Arabidopsis. For Exo70B2 and Exo70H1 paralogues, transcriptional up-regulation was confirmed on treatment with an elicitor p...
Host-induced gene silencing in barley powdery mildew reveals a class of ribonuclease-like effectors.
Obligate biotrophic pathogens of plants must circumvent or counteract defenses to guarantee accommodation inside the host. To do so, they secrete a variety of effectors that regulate host immunity and facilitate the establishment of pathogen feeding structures called haustoria. The barley powdery mildew fungus Blumeria graminis f. sp. hordei produces a large number of proteins predicted to be s...
در این بررسی واکنش 62 رقم تجاری گندم نان ایرانی به بیماری زنگ سیاه گندم (Puccinia graminis f. sp. tritici) در مراحل گیاهچه‌ای و گیاه کامل مورد مطالعه قرار گرفت. آزمایش در مرحله گیاهچه‌ای با نژادهای غالب در کشور TTSTC، TTTTF، TRTFC، TTKSK(Ug99)، TTTTC و TKTTC و در مرحله گیاه کامل در مزرعه ایستگاه تحقیقات کشاورزی کلاردشت در شرایط آلودگی طبیعی و در گلخانه واحد بیماری‌های غلات، موسسه تحقیقات اصلاح...
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