Exploring the genetic basis of pre-harvest sprouting in rice through a genome-wide association study-based haplotype analysis

作     者：Myeong-Hyeon Min Aye Aye Khaing Sang-Ho Chu Bhagwat Nawade Yong-Jin Park Myeong-Hyeon Min;Aye Aye Khaing;Sang-Ho Chu;Bhagwat Nawade;Yong-Jin Park

作者机构：Department of Plant ResourcesCollege of Industrial SciencesKongju National UniversityYesan 32439Republic of Korea Department of AgronomyYezin Agricultural UniversityNay Pyi Taw 15013Myanmar 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2024年第23卷第8期

页      面：2525-2540页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the National Research Foundation of Korea(NRF)grants funded by the Ministry of Science and Information and Communication Technology(MSIT),Republic of Korea(NRF2022R1A4A1030348 and 2023R1A2C1004432) the Korea Institute of Planning and Evaluation for Technology in Food,Agriculture and Forestry(IPET)through the Digital Breeding Transformation Technology Development Program,funded by the Ministry of Agriculture,Food and Rural Affairs(MAFRA),Republic of Korea(322060031HD020) the Cooperative Research Program for Agriculture Science and Technology Development,Rural Development Administration,Republic of Korea(RS-2023-00222739) 

主　　题：rice PHS dormancy germination GWAS haplotype abiotic stress 

摘      要：Pre-harvest sprouting(PHS)poses a significant global challenge to cereal production,impacting both yield and *** this study,we employed genome-wide association studies(GWAS)on diverse rice accessions to identify novel PHS-associated *** assessment of 127 cultivated accessions for panicle germination(PHS)and detached grain germination(germination rate of detached grains at the 14th day(D14))revealed considerable phenotypic variation among rice *** analysis identified 91 significant signals at–log10(P-value)5,including 15SNPs for PHS and 76 SNPs for D14.A subsequent linkage disequilibrium(LD)block-based GWAS analysis detected 227 significant SNPs for both traits,consisting of 18 nonsynonymous substitutions located on the coding regions of nine *** haplotype analysis identified 32 haplotypes,with 10 specific to cultivated accessions,19 specific to the wild type,and three shared between them.A phenotypic assessment of major haplotypes revealed significant differences between resistant(Hap1 and Hap2)and susceptible haplotypes(Hap5,Hap27,and Hap28),distinguished by a G/A SNP within a novel gene,*** identified haplotypes offer promising prospects for haplotypebased breeding aimed at enhancing PHS resistance in rice.