Results 201 to 210 of about 18,107 (236)

Differential impact of crown rust (Puccinia coronata) infection on photosynthesis and volatile emissions in the primary host Avena sativa and the alternate host Rhamnus frangula.

Journal of Experimental Botany, 2023
Rust infection results in decreases in photosynthesis and stress volatile emissions, but how these changes vary among host species has not been studied. We demonstrated the impact of the obligate biotrophic fungus, Puccinia coronata f. sp.
H. Sulaiman, E. Runno-Paurson, E. Kaurilind, Ü. Niinemets   +3 more
semanticscholar   +1 more source

Genetic analysis and physical mapping of oat adult plant resistance loci against Puccinia coronata f. sp. avenae.

Phytopathology, 2023
Six quantitative trait loci (QTL) for adult plant resistance (APR) against oat crown rust (Puccinia coronata f. sp. avenae) were identified from mapping three recombinant inbred populations (RILs).
E. Nazareno, J. Fiedler, N. K. Ardayfio, Marisa E. Miller, M. Figueroa, S. Kianian   +5 more
semanticscholar   +1 more source

Puccinia coronata var. coronata, a crown rust pathogen of two highly invasive species, is detected across the Midwest and Northeastern United States.

Plant Disease, 2022
Puccinia coronata var. coronata (Pcc) causes crown rust disease of glossy buckthorn (Frangula alnus) and reed canarygrass (Phalaris arundinacea), two highly invasive plant species in North America.
Nicholas Greatens, Nick Klejeski, L. Szabo, Yue Jin, P. O. Olivera Firpo   +4 more
semanticscholar   +1 more source

NEW HOST OF PUCCINIA CORONATA var. CORONATA FROM PAKISTAN

Journal of Plant Pathology, 2015
During an uredinological survey carried out in August 2009 in Sharan (Khyber Pakhtunkhwa province of Pakistan), leaves of Stipa sibirica infected with a rust fungus were found. Uredinia were abaxial, brown, 0.2 to 0.25 mm wide and 0.08 to 0.12 mm long.
Ishaq, A., Afshan, N.S., Khalid, A.N.
openaire   +1 more source

Induced mutation for pathogenicity in Puccinia coronata avenae

Transactions of the British Mycological Society, 1961
The production of a mutant from Puccinia coronata avenae , race 96, by ultra-violet irradiation is reported. The mutant differs from the parent race in its ability to attack cultivars of a differential host series resistant to race 96, and in being avirulent to one cultivar susceptible to race 96.
D.J. Griffiths, A.J.H. Carr
openaire   +1 more source

Virulence and genomic analysis of Puccinia coronata f. sp. avenae in Australia identifies new races and a new lineage in 2024

bioRxiv
Crown rust, caused by Puccinia coronata f. sp. avenae (Pca), remains a persistent threat to oat production in Australia. To monitor recent shifts in virulence and population structure, 30 Pca isolates collected during the 2024 growing season across major
Zhouyang Su, David Lewis, Eva C. Henningsen, Duong T. Nguyen, Jana Sperschneider, Peter N. Dodds, M. Figueroa   +6 more
semanticscholar   +1 more source

Virulence Dynamics of Puccinia coronata f. sp. avenae in 2023: Insights from the USDA's Oat Crown Rust Survey.

Plant Disease
The USDA's annual oat crown rust survey provides critical insights into the pathogen's regional and temporal virulence patterns. In the 2023 survey, 238 single pustule Puccinia coronata f. sp.
E. P. Moreau, Jakob M Riddle, S. Kianian
semanticscholar   +1 more source

Ultrastructure of spermatium ontogeny in Puccinia coronata avenae

Canadian Journal of Botany, 1978
Spermatium formation in Puccinia coronata avenae was concluded to be annellidic but with some phialidic analogies. The spermatiophore wall consisted of a prominent outer layer and a very thin inner layer. During formation of the first spermatium initial, the apical end of the spermatiophore became somewhat swollen and a septum was then formed ...
D. E. Harder, J. Chong
openaire   +1 more source

Zum Wirstpflanzenkreis des Kronenrostes (Puccinia coronata Corda var. coronata).

Česká Mykologie, 1978
Analysis of the host plant range of the important parasite of Festuca pratensis Huds. — the crown rust Puccinia coronata Corda var. coronata — showed that this is indeed the graminicolous form of this rust species. Positive infection was observed in 24 grass species out of 174 tested from the Poaceae family.
openaire   +1 more source

Electron microscopy of teliospore formation in Puccinia coronata avenae

Physiological Plant Pathology, 1977
Abstract Teliospores of Puccinia coronata avenae developed as sympodioconidia, and up to the stage of primary spore cell formation their ontogeny was similar to that of urediospores. After the primary teliospore cells were formed they elongated and a heavy cap of wall material formed at the terminal end (the crown) of the cell.
openaire   +1 more source