Wheat and Barley Genetics and Pathology
Peer reviewed
Abstract
Abstract
Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), has been effectively managed through cultivar resistance in South Africa (SA) following the first report of the disease in 1996. However, the detection of Pst race 142E30A+ with broader virulence in Zimbabwe during 2018 raised concerns about the potential introduction and establishment of this race in SA through wind mediated urediniospore dispersal. In this study, we characterized Pst field isolates collected in SA, Lesotho, and Zimbabwe through race analysis and microsatellite genotyping. Race-typing of field isolates collected in 2022 revealed the first report of Pst race 142E30A+ in SA, which became predominant and widely distributed across the summer rainfall wheat production region. This race differs from previously reported stripe rust races in SA and Lesotho, being virulent to Yr3a, Yr4a, Yr9, and Yr27. Genotypic analyses confirmed that Pst isolates collected in SA remain clonal, comprising three genetic lineages with low genetic diversity. The close genetic relationship and similar virulence profiles between South African and Zimbabwean isolates of Pst race 142E30A+, together with the timelines of stripe rust outbreaks reported during the 2022 season, support the southerly migration of urediniospores into SA. These findings highlight the threat posed by the emergence and spread of Pst isolates with broader virulence and the need for continued surveillance, early warning systems, and regional collaboration.
Direct answer
What can I do from this paper page?
Use this page to scan "Southerly migration of wheat stripe rust race 142E30A+ into South Africa" quickly: start with the summary and abstract, then check the authors, source, topics, and related papers. From here, open Scollr to follow Wheat and Barley Genetics and Pathology research, save the paper, or map adjacent work.
Research areas
Follow related topics
Citation
BibTeX
@article{Coetzer2026Southerly,
title = {Southerly migration of wheat stripe rust race 142E30A+ into South Africa},
author = {Amy Coetzer and Botma Visser and Tarekegn Terefe and Isabella du Toit and Nyasha Chiuraise and Z. A. Pretorius and Willem H. P. Boshoff},
journal = {Plant Disease},
year = {2026},
doi = {10.1094/pdis-05-26-1013-re},
url = {https://doi.org/10.1094/pdis-05-26-1013-re}
}FAQ
Using this paper in a discovery workflow
How do I find related work for this paper?
Use the related papers and topic links on this page as starting points. In Scollr, you can also open the paper and build a literature map around its references, citing papers, and related work.
How can I keep up with new Wheat and Barley Genetics and Pathology research papers?
Follow Wheat and Barley Genetics and Pathology research in Scollr. New papers from the topic flow into a personalized feed, and you can save useful studies to revisit later.
Can I cite this paper from this page?
This page includes a static BibTeX block for Southerly migration of wheat stripe rust race 142E30A+ into South Africa. Always verify the DOI, source, and publication details against the publisher record before submitting a manuscript.
Follow this research in Scollr
Follow the topics and authors behind this paper, save useful studies, and build a literature map when you are ready to go deeper.
Get the app