Genomic insights on the contribution of introgressions from Xian/Indica to the genetic improvement of Geng/Japonica rice cultivars
作者机构：Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China School of Advanced Agriculture Sciences and School of Life SciencesState Key Laboratory of Protein and Plant Gene ResearchPeking UniversityBeijing 100871China Peking University Institute of Advanced Agricultural SciencesWeifangShandong261325China Rice Research InstituteJiangxi Academy of Agricultural SciencesNanchang 330200China Institute of Crop ResearchNingxia Academy of Agricultural and Forestry SciencesYongning 750105China Rice Research InstituteLinyi Academy of Agricultural SciencesShandong Linyi 276012China Rice Research Institute of Liaoning ProvinceShenyang 110161China
出 版 物：《Plant Communications》 (植物通讯（英文）)
年 卷 期：2022年第3卷第3期
页 面：72-88页
核心收录：
基 金：This work was supported by the National Key Research and Development Program of China(2021YFD1200500 and 2016YFD0100101) National Key Research and Development Program of China(2016YFD0100801 and 2017YFA0503800) CAAS Science and Technology Innovation Pro-gram,Protective Program of Crop Germplasm of China(19200385-1) Third National Survey And Collection Action On Crop Germplasm Resource(19210859 and 19210860) National Crop Germplasm Re-sources Center(NCGRC-2021-02) Project of Sanya Yazhou Bay Sci-ence and Technology City(SKJC-2020-02-001)
主 题：Geng/japonica rice breeding intersubspecific hybridization introgression GWAS pedigree
摘 要：Hybridization between Xian/indica(XI)and Geng/japonica(GJ)rice combined with utilization of plant ideotypes has greatly contributed to yield improvements in modern GJ rice in China over the past 50 *** explore the genomic basis of improved yield and disease resistance in GJ rice,we conducted a large-scale genomic landscape analysis of 816 elite GJ cultivars representing multiple eras of germplasm from *** detected consistently increasing introgressions from three XI subpopulations into GJ cultivars since the 1980s and found that the XI genome introgressions significantly increased the grain number per panicle(GN)and decreased the panicle number per *** contributed to the improvement of plant type during modern breeding,changing multi-tiller plants tomoderate tiller plants with a large panicle size and increasing the blast ***,we found that key gene haplotypes controlling plant architecture,yield components,and pest and disease resistance,including IPA1,SMG1,DEP3,Pib,Pi-d2,and Bph3,were introduced from XI rice by *** GWAS analysis,we detected a GN-related gene Gnd5,which had been consistently introgressed from XI into GJ cultivars since the ***5 is a GRAS transcription factor gene,and Gnd5 knockout mutants showed a significant reduction in *** estimated genetic effects of genes varied among different breeding locations,which explained the distinct introgression levels of XI gene haplotypes,including Gnd5,DEP3,etc.,to these GJ breeding *** findings reveal the genomic contributions of introgressions from XI to the trait improvements of GJ rice cultivars and provide new insights for future rice genomic breeding.
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