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Integrated Transcriptome and GWAS Analysis to Identify Candidate Genes for Ustilago maydis Resistance in Maize

文献类型： 外文期刊

作者： Yin, Bingyu 1 ; Xu, Linjie 1 ; Li, Jianping 1 ; Zheng, Yunxiao 1 ; Song, Weibin 2 ; Hou, Peng 3 ; Zhu, Liying 1 ; Jia, Xiaoyan 1 ; Zhao, Yongfeng 1 ; Song, Wei 4 ; Guo, Jinjie 1 ;

作者机构： 1.Hebei Agr Univ, Coll Agron, Hebei Sub Ctr Natl Maize Improvement Ctr China, State Key Lab North China Crop Improvement Regulat, Baoding 071000, Peoples R China

2.China Agr Univ, Natl Maize Improvement Ctr, Dept Plant Genet & Breeding, State Key Lab Maize Biobreeding, Beijing 100193, Peoples R China

3.Chinese Acad Agr Sci, Minist Agr & Rural Affairs, Inst Crop Sci, Key Lab Crop Physiol & Ecol, Beijing 100081, Peoples R China

4.Hebei Acad Agr & Forestry Sci, Inst Cereal & Oil Crops, Key Lab Crop Genet & Breeding Hebei Prov, Shijiazhuang 050035, Peoples R China

关键词： maize; Ustilago maydis; transcriptome sequencing; genome-wide association analysis; candidate genes

期刊名称：AGRICULTURE-BASEL （ 影响因子：3.3； 五年影响因子：3.5 ）

ISSN：

年卷期： 2024 年 14 卷 6 期

页码：

收录情况： SCI

摘要： Maize Ustilago maydis is a disease that severely affects maize yield and quality. In this paper, we employed transcriptome sequencing and GWAS analysis to identify candidate genes and reveal disease-resistant germplasm resources, thereby laying the foundation for further analysis of the molecular mechanism of maize Ustilago maydis resistance and genetic improvement. The results of transcriptome sequencing revealed that a considerable number of receptor kinase genes, signal-transduction-related protein genes, redox-response-related genes, WRKYs, and P450s genes were significantly upregulated. There was a wide range of mutations of Ustilago maydis in maize inbred lines. Thirty-two high-resistance maize inbred lines were selected, and 16 SNPs were significantly associated with the disease index. By integrating the results of GWAS and RNA-seq, five genes related to disease resistance were identified, encoding the chitinase 1 protein, fatty acid elongase (FAE), IAA9, GATA TF8, and EREB94, respectively. It provides a certain reference for the cloning of maize anti-tumor smut genes and the breeding of new varieties.

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