Genome-Wide Association Study of Vascular Bundle-Related Traits in Maize Stalk

文献类型： 外文期刊

第一作者： Zheng, Yunxiao

作者： Zheng, Yunxiao;Zhu, Liying;Huang, Yaqun;Wang, Hong;Guo, Jinjie;Hou, Peng;Song, Weibin;Liu, Han;Liu, Han

作者机构：

关键词： maize; stalk; vascular bundle; genome-wide association study; candidate genes

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.754； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2021 年 12 卷

页码：

收录情况： SCI

摘要： The vascular bundle plays an important role in nutrient transportation in plants and exerts great influence on crop yield. Maize is widely used for food, feed, and fuel, producing the largest yield in the world. However, genes and molecular mechanism controlling vascular bundle-related traits in maize have largely remained undiscovered. In this study, a natural population containing 248 diverse maize inbred lines genotyped with high-throughput SNP markers was used for genome-wide association study. The results showed that broad variations existed for the vascular bundle-related traits which are subject to genetic structure and it was suitable for association analysis. In this study, we identified 15, 13, 2, 1, and 5 SNPs significantly associated with number of small vascular bundle, number of large vascular bundle, average area of single small vascular bundle, average area of single large vascular bundle, and cross-sectional area, respectively. The 210 candidate genes in the confidence interval can be classified into ten biological processes, three cellular components, and eight molecular functions. As for the Kyoto Encyclopedia of Genes and Genomes analysis of the candidate genes, a total of six pathways were identified. Finally, we found five genes related to vascular development, three genes related to cell wall, and two genes related to the mechanical strength of the stalk. Our results provide the further understanding of the genetic foundation of vascular bundle-related traits in maize stalk.

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[1]Genome-Wide Association Study of Vascular Bundle-Related Traits in Maize Stalk. Zheng, Yunxiao,Zhu, Liying,Huang, Yaqun,Wang, Hong,Guo, Jinjie,Hou, Peng,Song, Weibin,Liu, Han,Liu, Han. 2021

[2]Genome-Wide Association Study of Vascular Bundle-Related Traits in Maize Stalk. Zheng, Yunxiao,Zhu, Liying,Huang, Yaqun,Wang, Hong,Guo, Jinjie,Hou, Peng,Song, Weibin,Liu, Han,Liu, Han. 2021

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