Urediniospores of Puccinia sorghi: pre- and post-cold storage requirements
Article
Article Title | Urediniospores of Puccinia sorghi: pre- and post-cold storage requirements |
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ERA Journal ID | 2574 |
Article Category | Article |
Authors | Quade, Aurelie, Park, Robert F., Stodart, Ben J. and Ash, Gavin J. |
Journal Title | Canadian Journal of Plant Pathology |
Journal Citation | 44 (5), pp. 737-743 |
Number of Pages | 8 |
Year | 2022 |
Publisher | Taylor & Francis |
Place of Publication | United States |
ISSN | 0706-0661 |
Digital Object Identifier (DOI) | https://doi.org/10.1080/07060661.2022.2039962 |
Web Address (URL) | https://www.tandfonline.com/doi/full/10.1080/07060661.2022.2039962 |
Abstract | The specific pre- and post-cold storage treatments needed to maintain the viability of urediniospores of rust fungi during storage are species dependent. Urediniospore collections are critical to assess pathogen evolution over time, but most importantly, to determine the efficacy of resistance genes in host plants. Puccinia sorghi, the causal agent of common rust of maize, can cause yield losses of up to 40% in susceptible varieties. The purpose of this study was to optimize the pre- and post-cold storage requirements of P. sorghi urediniospores. Here, we report that dried urediniospores had an 87% decrease in germination compared with undried spores. Urediniospores of P. sorghi were successfully stored at −80°C for 24 months and remained infectious, and did not require cold shock in liquid nitrogen pre-cold storage, nor a heat shock to revive them from dormancy. Urediniospores removed from storage in a freezer at −80°C germinated readily between 22°C and 55°C. |
Keywords | common rust; cryopreservation; isolate collection; maize; Pucciniales |
Related Output | |
Is part of | Breeding for durable resistance to Puccinia sorghi: status and strategies |
ANZSRC Field of Research 2020 | 310705. Mycology |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre for Crop Health |
Institute for Life Sciences and the Environment | |
University of Sydney | |
Charles Sturt University |
https://research.usq.edu.au/item/yw69x/urediniospores-of-puccinia-sorghi-pre-and-post-cold-storage-requirements
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