Candidate Genes and Favorable Haplotypes Associated with Iron Toxicity Tolerance in Rice

文献类型： 外文期刊

第一作者： Miao, Siyu

作者： Miao, Siyu;Lu, Jingbing;Jiang, Jing;Li, Pingping;Qian, Yukang;Wang, Wensheng;Xu, Jianlong;Zhang, Fan;Zhao, Xiuqin;Zhang, Guogen;Wang, Wensheng;Zhang, Fan

作者机构：

关键词： Fe toxicity tolerance; GWAS; physiological characteristics; candidate genes; rice

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.6 ）

ISSN： 1661-6596

年卷期： 2024 年 25 卷 13 期

页码：

收录情况： SCI

摘要： Iron (Fe) toxicity is a major issue adversely affecting rice production worldwide. Unfortunately, the physiological and genetic mechanisms underlying Fe toxicity tolerance in rice remain relatively unknown. In this study, we conducted a genome-wide association study using a diverse panel consisting of 551 rice accessions to identify genetic mechanisms and candidate genes associated with Fe toxicity tolerance. Of the 29 quantitative trait loci (QTL) for Fe toxicity tolerance detected on chromosomes 1, 2, 5, and 12, five (qSH_Fe5, qSFW_Fe2.3, qRRL5.1, qRSFW1.1, and qRSFW12) were selected to identify candidate genes according to haplotype and bioinformatics analyses. The following five genes were revealed as promising candidates: LOC_Os05g40160, LOC_Os05g40180, LOC_Os12g36890, LOC_Os12g36900, and LOC_Os12g36940. The physiological characteristics of rice accessions with contrasting Fe toxicity tolerance reflected the importance of reactive oxygen species-scavenging antioxidant enzymes and Fe homeostasis for mitigating the negative effects of Fe toxicity on rice. Our findings have clarified the genetic and physiological mechanisms underlying Fe toxicity tolerance in rice. Furthermore, we identified valuable genetic resources for future functional analyses and the development of Fe toxicity-tolerant rice varieties via marker-assisted selection.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序