in this study, isolate sr99-ua (race 70e 128) of wheat stripe rust (puccinia striiformis west. f. sp. tritici eriks) was used to infect susceptible spring wheat (cultivar thatcher) and its near isogenic line possessing yr-18 adult-plant resistance gene. samples were taken at the flag leaf stage and observed using light, transmission and scanning electron micro-scopes. no major differences in th...

confocal laser scanning microscopy (clsm) is a revolutionary advance in the field of light microscopy which, in recent years, has been used on interaction studies between host and pathogen. this study carried out on the flag leaves of the susceptible spring wheat cultivar (triticum aestivum l.) known as thatcher and its near isogenic line with the yr-18 adult-plant resistance gene to stripe rus...

ABSTRACT Leaf and stripe rusts, caused by Puccinia triticina and P. striiformis, respectively, are globally important fungal diseases of wheat that cause significant annual yield losses. A gene that confers slow rusting resistance to leaf rust, designated as Lr46, has recently been located on wheat chromosome 1B. The objectives of our study were to establish the precise genomic location of gene...

Stripe rust caused by Puccinia striiformis Westend. f. sp. tritici Erikks. is an economically important disease of wheat (Triticum aestivum L.). Hexaploid spring wheat landrace PI 480035 was highly resistant to stripe rust in the field in Washington during 2011 and 2012. The objective of this research was to identify quantitative trait loci (QTL) for stripe rust resistance in PI 480035. A sprin...

The plant cytoskeleton, including microtubules and microfilaments, is one of the important factors in determining the polarity of cell division and growth, as well as the interaction of plants with invading pathogens. In defense responses of wheat against the stripe rust (Puccinia striiformis f. sp. tritici) infection, hypersensitive response is the most crucial event to prevent the spread of p...

Postulating and inferring resistance genes to wheat stripe rust are a complicated process and need abundant expertise. An expert system for postulating and inferring resistance genes to wheat stripe rust (PRSRW) was developed by China Agricultural University. The process of PRSRW was described on the basis of the user’s requirement. The system structure and its main components were introduced, ...

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...

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 ...

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...