文献类型： 外文期刊
作者： Dan, Yuqing 1 ; Huang, Fudeng 2 ; Xu, Junfeng 3 ; He, Yong 1 ; Peng, Ruixiao 1 ; Li, Chunshou 2 ; Song, Jiayu 2 ; Hao, Yuanyuan 2 ; Tian, Zhihong 1 ;
作者机构： 1.Yangtze Univ, Coll Life Sci, Engn Res Ctr Ecol & Agr Use Wetland, Minist Educ, Jingzhou 434025, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Crop & Nucl Technol Utilizat, Hangzhou 310021, Peoples R China
3.Zhejiang Acad Agr Sci, State Key Lab Qual & Safety Agroprod, Hangzhou 310021, Peoples R China
4.Zhejiang Acad Agr Sci, Key Lab Traceabil Agr Genet Modified Organisms, Minist Agr & Rural Affairs, Hangzhou 310021, Peoples R China
关键词：
rice quality;
期刊名称：CELLS （ 影响因子：5.2； 五年影响因子：6.1 ）
ISSN：
年卷期： 2025 年 14 卷 9 期
页码：
收录情况： SCI
摘要： Starch biosynthesis is crucial in determining rice quality during rice endosperm development. This study obtained a stable inheritable white-core endosperm mutant, h5, by treating the japonica rice variety Nipponbare with MNU (N-methyl-N-nitro-sourea). The mutated gene is an allele of OsAGPL2, which encodes the large subunit of ADP-glucose pyrophosphorylase (AGPase), a key and rate-limiting enzyme in the rice starch biosynthesis pathway. A G-C mutation in the third exon of OsAGPL2 led to impaired starch synthesis, significantly reduced amylose content (AC) and gel consistency (GC), and a marked decrease in AGPase activity. The haplotype analysis revealed that an SNP in the 3 ' UTR and two SNPs in the 5 ' UTR of OsAGPL2 were associated with significant differences in AC and GC among rice resources. These SNPs can be utilized to design molecular markers for breeding programs to improve rice quality. This study elucidates the impact of OsAGPL2 on the eating and cooking quality of rice. It identifies superior haplotypes, providing a theoretical foundation and molecular markers for accumulating minor-effect genes to enhance rice quality.
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