Histological investigation of stripe rust (Puccinia striiformis f.sp. tritici) development in resistant and susceptible wheat cultivars

@article{Moldenhauer2006HistologicalIO,
  title={Histological investigation of stripe rust (Puccinia striiformis f.sp. tritici) development in resistant and susceptible wheat cultivars},
  author={Jennifer Moldenhauer and Bruno M. Moerschbacher and A. J. Westhuizen},
  journal={Plant Pathology},
  year={2006},
  volume={55},
  pages={469-474}
}
The wheat cultivar Kariega expresses complete adult plant resistance against stripe rust, whereas cv. Avocet S is susceptible. Using confocal laser scanning microscopy, initial fungal penetration into flag leaves was identical in both cultivars, with directional germ-tube growth towards stomata that were penetrated without the formation of an appressorium, followed by differentiation of a substomatal vesicle, infection hyphae, haustorial mother cells and haustoria. During the following 4 days… Expand
ULTRASTRUCTURE OF STRIPE RUST (PUCCINIA STRIIFORMIS f. sp. TRITICI) INTERACTING WITH SLOW-RUSTING, HIGHLY RESISTANT, AND SUSCEPTIBLE WHEAT CULTIVARS
TLDR
Interactions between slow-rusting, highly resistant, and susceptible cultivars of common wheat with stripe rust were studied at the ultrastructural level and cytological similarities of slow-Rusting with hypersensitive resistance are briefly discussed. Expand
Histological and cytological characterization of adult plant resistance to wheat stripe rust
TLDR
The expression of APR to stipe rust in wheat cultivar Xingzi 9104 (XZ) was clearly associated with extensive hypersensitive cell death of host cells and the localized production of reactive oxygen species. Expand
Development of Colletotrichum acutatum on Tolerant and Susceptible Olea europaea L. cultivars: A Microscopic Analysis
TLDR
The aim of this study was to compare the infection process: conidial germination, germ tube and appressorium formation, hyphal growth, and mesocarp colonization in susceptible and tolerant olive cultivars as a condition for further exploration of disease development, which is required to develop cultivars with improved resistance to anthracnose. Expand
Wheat stripe (yellow) rust caused by Puccinia striiformis f. sp. tritici.
TLDR
This review summarizes the current knowledge of the Pst-wheat pathosystem, with emphasis on the life cycle, uredinial infection process, population biology of the pathogen, genes for stripe rust resistance in wheat and molecular perspectives of wheat-Pst interactions. Expand
Unraveling the Wheat Stem Rust Infection Process on Barley Genotypes Through Relative qPCR and Fluorescence Microscopy.
TLDR
Quantitative real-time polymerase chain reaction (qPCR) was used to determine the amount of fungal DNA relative to host DNA in infected tissue, providing new insights about fungal development and host resistance during the infection process in this pathosystem. Expand
A pathogenomic approach towards characterising the South African population of puccinia striiformis f. sp. tritici, the causal agent of wheat stripe rust
TLDR
The historical population of the South African Pst pathotypes was described using a recently developed “field pathogenomics” approach, determining the genomic relationships between the four historical pathotypes and investigating their potential origin. Expand
Epidemiological and histological components of crown rust resistance in oat genotypes
TLDR
The data suggest that the resistance mechanisms, especially hypersensitivity and phenolic compound production, active in resistant plants are similar but may be differently expressed over time, as well as the level of field resistance in these genotypes. Expand
Histopathology of rust infection in wheat and barley
TLDR
Besides the confirmation of enhanced resistance of co-occurring resistance loci, the choice of QTL was accentuated in the varying levels of defence conditioned by different QTL combinations, and significant variation found among lines across parameters. Expand
Yellow Rust (Puccinia striiformis): a Serious Threat to Wheat Production Worldwide
TLDR
The emergence of new races of Pst with high epidemic potential which can adapt to warmer temperatures has expanded virulence profiles and races are more aggressive than those previously characterized, emphasize the need for more breeding efforts of resistant varieties and reinforcement of other management practices to prevent and overcome stripe rust epidemic around the world. Expand
Histopathology provides a phenotype by which to characterize stripe rust resistance genes in wheat
TLDR
Cell death associated with infection sites was observed for all genotypes, although the timing of first appearance and the extent of the cell death response varied considerably, and in lines carrying both QPst.jic-2D and QPST.jIC-4B cell death did not extend beyond one to three cells. Expand
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