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Plant Height Affects Fusarium Crown Rot Severity in Wheat

文献类型： 外文期刊

作者： Liu, Y. X. 1 ; Yang, X. M. 1 ; Ma, J. 1 ; Wei, Y. M. 1 ; Zheng, Y. L. 2 ; Ma, H. X. 3 ; Yao, J. B. 3 ; Yan, G. J. 4 ; Wang, 1 ;

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

2.Sichuan Agr Univ, Triticeae Res Inst, Yaan 625014, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Biotechnol, Nanjing 210014, Peoples R China

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

5.Univ Queensland, Sch Math & Phys, Ctr Applicat Nat Resource Math, Brisbane, Qld 4072, Australia

关键词： gibberellin: agrichemical;growth regulator;disease resistance;plant height effect;tall-dwarf near isogenic line

期刊名称：PHYTOPATHOLOGY （ 影响因子：4.025； 五年影响因子：4.394 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Liu Y X Yang X M Ma J Wei Y M Zheng Y L Ma H X Yao J B Yan G J Wang Y G Manners J M and Liu, C J 2010 Plant height affects Fusarium crown rot severity in wheat Phytopathology 100 1276 1281Effects of plant height on Fusarium crown rot (FCR) disease severity were investigated using 12 pairs of near isogenic lines (NILs) for six different reduced height (Rht) genes in wheat The dwarf isolines all gave better FCR resistance when compared with their respective tall counterparts although the Rht genes involved in these NILs are located on several different chromosomes Treating plants with exogenous gib berellin increased FCR severity as well as seedling lengths in all of the isolines tested Analysis of the expression of several defense genes with known correlation with resistance to FCR pathogens between the Rht isolines following FCR inoculation indicated that the better resistance of the dwarf isolines was not due to enhanced defense gene induction These results suggested that the difference in FCR severity between the tall and dwarf isolines is likely due to their height difference per se or to some physiological and structural consequences of reduced height Thus caution should be taken when considering to exploit any FCR locus located near a height gene

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