Abstract
Wheat stem rust caused by the fungus Puccinia graminis f. sp. tritici is one of the most destructive diseases. Here, we collected 43 stem rust isolates from six provinces of Iran during 2020–2022 and assessed variability in their virulence on 20 North American differential lines carrying one of the stem rust resistance genes. More than 90% of isolates were virulent on lines with gene Sr5, Sr9d, Sr9g, Sr30, Sr36, Sr38, SrTmp and SrMcN and the least virulent on those with Sr31 (16.2%) and Sr24 (0%). The majority of isolates belonged to races TKTTF, TTTTF, and TTTTK. Races TTTTK, TKTTK and PTTTK are new in Iran.
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Acknowledgment
We are grateful for the financial assistance for this study provided by Tarbiat Modares University. We thank Mrs. M. Khairgou for Pgt samples from Golestan Province.
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This work was partially supported by Japan Society for the Promotion of Science (JSPS) KAKENHI Grants (19H02953, 19K22300, 21K05591, and 22KK0081). The funder has no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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MKJ conceived the project. FKh, MKJ, and MN carried out the experimental work. FKh and MKJ wrote the manuscript. All authors approved the manuscript for submission to the Journal of General Plant Pathology.
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Khanboluki, F., Nasrollahi, M. & Karimi-Jashni, M. Virulence analysis of wheat stem rust isolates (Puccinia graminis f. sp. tritici) in Iran using differential lines. J Gen Plant Pathol (2024). https://doi.org/10.1007/s10327-024-01188-y
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DOI: https://doi.org/10.1007/s10327-024-01188-y