The Mining of Genetic Loci and the Analysis of Candidate Genes to Identify the Physical and Chemical Markers of Anti-Senescence in Rice
文献类型: 外文期刊
作者: Wenjing Yin;Zhao Huang;Qianqian Zhong;Luyao Tang;Richeng Wu;Sanfeng Li;Yijian Mao;Xudong Zhu;Changchun Wang;Yuchun Rao;Yuexing Wang
作者机构:
关键词: anti-senescence;catalase;malondialdehyde;quantitative analysis;rice;superoxide dismutase
期刊名称: Plants
ISSN: 2223-7747
年卷期: 2025 年 12 卷 22 期
页码:
收录情况: SCIE(2025版)
摘要: Premature senescence is a common occurrence in rice production, and seriously affects rice plants’ nutrient utilization and growth. A total of 120 recombinant inbred lines (RILs) were obtained from successive self-crossing of F12 generations derived from Huazhan and Nekken2. The superoxide dismutase (SOD) activity, malondialdehyde (MDA), content and catalase (CAT) activity related to the anti-senescence traits and enzyme activity index of rice were measured for QTL mapping using 4858 SNPs. Thirteen QTLs related to anti-senescence were found, among which the highest LOD score was 5.70. Eighteen anti-senescence-related genes were found in these regions, and ten of them differed significantly between the parents. It was inferred that LOC_Os01g61500, LOC_Os01g61810, and LOC_Os04g40130 became involved in the regulation of the anti-senescence molecular network upon upregulation of their expression levels. The identified anti-senescence-related QTLs and candidate genes provide a genetic basis for further research on the mechanism of the molecular network that regulates premature senescence.
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