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Different tolerance in bread wheat, Durum wheat and barley to Fusarium crown rot disease caused by Fusarium pseudograminearum


Liu, Y and Ma, J and Yan, W and Yan, G and Zhou, M and Yuming, W and Zheng, Y and Liu, C, Different tolerance in bread wheat, Durum wheat and barley to Fusarium crown rot disease caused by Fusarium pseudograminearum, Journal of Phytopathology, 160, (7-8) pp. 412-417. ISSN 0931-1785 (2012) [Refereed Article]

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Copyright 2012 Blackwell Verlag GmbH

DOI: doi:10.1111/j.1439-0434.2012.01920.x


Fusarium crown rot (FCR) is a major disease of wheat and barley, and stem-base browning has been routinely used to measure resistance. Compared with barley (Hordeum vulgare L.), bread wheat (Triticum aestivum L.) shows less severe FCR stem-base browning symptoms (indicative of greater resistance or tolerance) but suffers higher yield loss (indicative of greater susceptibility), whereas durum wheat (T. durum Desf.) shows similar FCR severity but suffers much worse yield loss. To understand these differences, fungal biomass in bread and durum wheats and barley was estimated by realtime quantitative PCR at different stages of FCR disease development. Similar to a previous report on bread wheat infection by Fusarium graminearum, FCR infection caused by Fusarium pseudograminearum also showed three distinct phases in each of the three crop species analysed. During all stages of FCR disease development,barley varieties invariably displayed earlier and faster fungal accumulation compared with either bread or durum wheat. Although suffering much greater yield loss than barley, durum wheat appears to accumulate significantly lower levels of F. pseodugraminearum during infection. These results demonstrate that bread wheat varieties are more resistant to FCR infection and pathogen accumulation than barley varieties, and the less yield loss of the latter is likely due to its better tolerance to this disease. If also existing among different sources of resistance within a given species, these different features of disease resistance and tolerance could be exploited to minimize yield loss of new varieties.

Item Details

Item Type:Refereed Article
Keywords:Fusarium crown rot, wheat, barley, real-time quantitative PCR, fungal biomass
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Crop and pasture production
Research Field:Crop and pasture improvement (incl. selection and breeding)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Grains and seeds
Objective Field:Barley
UTAS Author:Zhou, M (Professor Meixue Zhou)
ID Code:76267
Year Published:2012
Web of Science® Times Cited:22
Deposited By:Agricultural Science
Deposited On:2012-03-02
Last Modified:2017-11-23
Downloads:7 View Download Statistics

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