The non-gibberellic acid-responsive semi-dwarfing gene uzu affects Fusarium crown rot resistance in barley

BMC Plant Biology

Research Article

John M Manners¹  Wei Yan²  Chunji Liu³  Yaxi Liu⁴  Guangdeng Chen⁵  Meixue Zhou⁶  Yuming Wei⁷  You-Liang Zheng⁷ 

[1] CSIRO Plant Industry, 306 Carmody Road, 4067, St Lucia, QLD, Australia;CSIRO Plant Industry, 306 Carmody Road, 4067, St Lucia, QLD, Australia;Institute of Food Crops, Jiangsu Academy of Agricultural Science, 50 Zhongling Street, 210014, Nanjing, China;CSIRO Plant Industry, 306 Carmody Road, 4067, St Lucia, QLD, Australia;School of Plant Biology, The University of Western Australia, 6009, Perth, WA, Australia;CSIRO Plant Industry, 306 Carmody Road, 4067, St Lucia, QLD, Australia;Triticeae Research Institute, Sichuan Agricultural University, 611130, Wenjiang, Chengdu, China;CSIRO Plant Industry, 306 Carmody Road, 4067, St Lucia, QLD, Australia;Triticeae Research Institute, Sichuan Agricultural University, 611130, Wenjiang, Chengdu, China;Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, 611130, Wenjiang, Chengdu, China;Tasmanian Institute of Agriculture and School of Agricultural Science, University of Tasmania, 46, 7250, Kings Meadows, Tasmania, Australia;Triticeae Research Institute, Sichuan Agricultural University, 611130, Wenjiang, Chengdu, China;

关键词: Plant height;    Fusarium crown rot;    uzu;    Near isogenic lines;    DELLA proteins;   

DOI  :  10.1186/1471-2229-14-22

 received in 2013-11-27, accepted in 2014-01-08,  发布年份 2014

来源: Springer

【 摘 要 】

BackgroundStudies in Arabidopsis show that DELLA genes may differentially affect responses to biotrophic and necrophic pathogens. A recent report based on the study of DELLA-producing reduced height (Rht) genes in wheat and barley also hypothesized that DELLA genes likely increased susceptibility to necrotrophs but increased resistance to biotrophs.ResultsEffects of uzu, a non-GA (gibberellic acid)-responsive semi-dwarfing gene, on Fusarium crown rot (FCR) resistance in barley were investigated. Fifteen pairs of near isogenic lines for this gene were generated and assessed under two different temperature regimes. Similar to its impacts on plant height, the semi-dwarfing gene uzu also showed larger effects on FCR severity in the high temperature regime when compared with that in the low temperature regime.ConclusionsResults from this study add to the growing evidence showing that the effects of plant height on Fusarium resistances are unlikely related to DELLA genes but due to direct or indirect effects of height difference per se. The interaction between these two characteristics highlights the importance of understanding relationships between resistance and other traits of agronomic importance as the value of a resistance gene could be compromised if it dramatically affects plant development and morphology.

【 授权许可】

Unknown   
© Chen et al.; licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.