典型文献
Sdr4 dominates pre-harvest sprouting and facilitates adaptation to local climatic condition in Asian cultivated riceOO
文献摘要：
Pre-harvest sprouting (PHS), which reduces grain yield and quality, is controlled by seed dormancy genes. Because few dormancy-related genes have been cloned, the genetic basis of seed dormancy in rice (Oryza sativa L.) remains unclear. Here, we performed a genome-wide association study and linkage mapping to dissect the genetic basis of seed dormancy in rice. Our findings suggest that Seed Dormancy4 (Sdr4), a central modulator of seed dormancy, integrates the abscisic acid and gibberellic acid signaling pathways at the tran-scriptional level. Haplotype analysis revealed that three Sdr4 alleles in rice cultivars already existed in ancestral Oryza rufipogon accessions. Fur-thermore, like the semi-dwarf 1 (SD1) and Rc loci, Sdr4 underwent selection during the domes-tication and improvement of Asian cultivated rice. The distribution frequency of the Sdr4-n allele in different locations in Asia is negatively associated with local annual temperature and precipitation. Finally, we developed functional molecular markers for Sdr4, SD1, and Rc for use in molecular breeding. Our results provide clues about the molecular basis of Sdr4-regulated seed dor-mancy. Moreover, these findings provide guid-ance for utilizing the favorable alleles of Sdr4 and Rc to synergistically boost PHS resistance, yield, and quality in modern rice varieties.
文献关键词：
中图分类号：
作者姓名：
Bo Zhao;Hui Zhang;Tianxiao Chen;Ling Ding;Liying Zhang;Xiali Ding;Jun Zhang;Qian Qian;Yong Xiang
作者机构：
Shenzhen Branch,Guangdong Laboratory for Lingnan Modern Agriculture,Genome Analysis Laboratory of the Ministry of Agriculture,Agricultural Genomics Institute at Shenzhen,Chinese Academy of Agricultural Sciences,Shenzhen 518120,China;Shanxi Key Laboratory of Minor Crop Germplasm Innovation and Molecular Breeding,College of Life Sciences,Shanxi Agricultural University,Taigu 030801,China;State Key Laboratory of Rice Biology,China National Rice Research Institute,Hangzhou 310006,China
文献出处：
引用格式：
[1]Bo Zhao;Hui Zhang;Tianxiao Chen;Ling Ding;Liying Zhang;Xiali Ding;Jun Zhang;Qian Qian;Yong Xiang-.Sdr4 dominates pre-harvest sprouting and facilitates adaptation to local climatic condition in Asian cultivated riceOO)[J].植物学报（英文版）,2022(06):1246-1263
A类：
Sdr4,riceOO,Dormancy4,tication,dor,mancy
B类：
dominates,harvest,sprouting,facilitates,adaptation,local,climatic,condition,Asian,cultivated,Pre,PHS,which,reduces,grain,yield,quality,controlled,by,seed,dormancy,genes,Because,few,related,have,been,cloned,genetic,basis,Oryza,sativa,remains,unclear,Here,performed,genome,wide,association,study,linkage,mapping,dissect,Our,findings,suggest,that,Seed,central,modulator,integrates,abscisic,acid,gibberellic,signaling,pathways,tran,scriptional,level,Haplotype,analysis,revealed,three,alleles,cultivars,already,existed,ancestral,rufipogon,accessions,Fur,thermore,like,semi,dwarf,SD1,Rc,loci,underwent,selection,during,domes,improvement,distribution,frequency,different,locations,negatively,associated,annual,temperature,precipitation,Finally,developed,functional,molecular,markers,breeding,results,provide,clues,about,regulated,Moreover,these,guid,utilizing,favorable,synergistically,boost,resistance,modern,varieties
AB值：
0.556333
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