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

文献类型： 外文期刊

作者： Chen, Guangdeng 1 ; Yan, Wei 1 ; Liu, Yaxi 1 ; Wei, Yuming 2 ; Zhou, Meixue 5 ; Zheng, You-Liang 2 ; Manners, John M.; 1 ;

作者机构： 1.CSIRO Plant Ind, St Lucia, Qld 4067, Australia

2.Sichuan Agr Univ, Triticeae Res Inst, Wenjiang 611130, Chengdu, Peoples R China

3.Sichuan Agr Univ, Inst Ecol & Environm Sci, Wenjiang 611130, Chengdu, Peoples R China

4.Jiangsu Acad Agr Sci, Inst Food Crops, Nanjing 210014, Jiangsu, Peoples R China

5.Univ Tasmania, Tasmanian Inst Agr & Sch Agr Sci, Kings Meadows, Tas 7250, Australia

6.Univ Western Australia, Sch Plant Biol, Perth, WA 6009, Australia

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

期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）

ISSN： 1471-2229

年卷期： 2014 年 14 卷

页码：

收录情况： SCI

摘要： Background: Studies 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. Results: Effects 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. Conclusions: Results 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.

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[1]Different Tolerance in Bread Wheat, Durum Wheat and Barley to Fusarium Crown Rot Disease Caused by Fusarium pseudograminearum. Liu, Yaxi,Wei, Yuming,Zheng, Youliang,Liu, Yaxi,Ma, Jun,Yan, Wei,Liu, Chunji,Ma, Jun,Yan, Guijun,Yan, Wei,Zhou, Meixue,Zhou, Meixue. 2012

[2]Genetic analysis of plant height and its components in diallel crosses of bread wheat (Triticum aestivum L.). Yao, J. B.,Ma, H. X.,Ren, L. J.,Zhang, P. P.,Yang, X. M.,Yao, G. C.,Zhang, P.,Zhou, M. P.. 2011

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