数字农科院2.0

LR is a Novel Gene Regulating Amylose Content in Rice Revealed by Genome-Wide Association Study

文献类型： 外文期刊

作者： Huijuan Li;Haipeng Yu;Guanrong Huang;Zengying Huang;Lu Tang;Pengfei Yang;Zhengzheng Zhong;Guocheng Hu;Peng Zhang;Hanhua Tong

作者机构：

关键词： amylose content;;rice

期刊名称： Rice Science

ISSN： 1672-6308

年卷期： 2025 年 32 卷 3 期

页码：

收录情况： SCIE（2025版） ; ; CSCD（2025-2026年度） ; ; 科技核心（2024版） ; ; 农林核心（2024版）

摘要： The genetic mechanism determining amylose content (AC)and its impact on eating and cooking quality (ECQ)of rice is highly complex.To elucidate the genetic basis of AC in rice,the Ting's core collection was used to identify novel AC genes/loci through genome-wide association analysis (GWAS)using more than 5.0 million single nucleotide polymorphisms(SNPs).In this study, 12 genes related to AC,including the major gene Wx and 11 minor genes,were detected using the EMMAX method.A novel gene,LR,encoding a nucleotide-binding leucine-rich-repeat (LRR)receptor (NLR)family protein,was s selected for functional study.When LR was knocked out using CRISPR/Cas9, the AC decreased significantly.Furthermore,the AC in varieties was significantly higher with Haplotype A compared to Haplotypes B and C of LR.Notably,two natural variations,SNP- 385 (Thr-Hap.A vs Ala-Haps.B and C)and SNP-758 (Ser-Hap. A vs Asn-Haps.B and C),in the coding region of LR might play critical roles in regulating AC and serve as potential targets for cultivating rice with diverse amylose contents.

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