ZmWAK, a quantitative resistance gene to head smut in maize, improves yield performance by reducing the endophytic pathogen Sporisorium reiliana

文献类型： 外文期刊

第一作者： Konlasuk, Suvimon

作者： Konlasuk, Suvimon;Zhang, Nan;Zuo, Weiliang;Zhang, Boqi;Xu, Mingliang;Xing, Yuexian;Tan, Guoqing

作者机构：

关键词： Maize;Head smut;ZmWAK;Disease resistance;Yield-related trait;Sporisorium reiliana

期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）

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收录情况： SCI

摘要： Head smut is a soil-borne systemic maize disease caused by the causal pathogen Sporisorium reiliana. ZmWAK is the gene within the major QTL qHSR1 conferring resistance to head smut disease. ZmWAK has been transferred by marker-assisted backcrossing into elite inbred lines with high-yield potential but susceptible to head smut. The converted inbred lines, together with their hybrids, were grown in 2012 and 2013 to investigate resistance performance, yield per plot, and yield-related traits. ZmWAK-mediated resistance to maize head smut follows a dominant genetic model, and a single ZmWAK allele could achieve high disease resistance to prevent yield loss from S. reiliana infection. Genetically, ZmWAK itself had no detectable negative impacts on yield-related traits. Instead, ZmWAK could indirectly improve most yield components, particularly ear-related traits, in symptomless plants by reducing the amount of endophytic S. reiliana. Overall, ZmWAK is beneficial to both head smut resistance and yield-related traits in maize.

分类号： Q94

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