The Mining of Genetic Loci and the Analysis of Candidate Genes to Identify the Physical and Chemical Markers of Anti-Senescence in Rice

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...

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Published inPlants (Basel) Vol. 12; no. 22; p. 3812
Main Authors Yin, Wenjing, Huang, Zhao, Zhong, Qianqian, Tang, Luyao, Wu, Richeng, Li, Sanfeng, Mao, Yijian, Zhu, Xudong, Wang, Changchun, Rao, Yuchun, Wang, Yuexing
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.11.2023
Subjects
Aging
Agricultural production
Analysis
anti-senescence
Botanical research
Catalase
Chlorophyll
Chromosomes
Crop production
Enzymatic activity
Enzyme activity
Enzymes
Gene loci
Gene mapping
Genes
Genetic analysis
Genetic aspects
Genomics
Inbreeding
Leaves
malondialdehyde
Mines and mineral resources
Nutrient utilization
Physiological aspects
Plant genetics
quantitative analysis
Quantitative genetics
Quantitative trait loci
Rice
Senescence
Single-nucleotide polymorphism
Superoxide
Superoxide dismutase
Israel
China
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Summary: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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ISSN:2223-7747
2223-7747
DOI:10.3390/plants12223812