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A Domestication-Associated Gene gmprr3b Regulates the Circadian Clock and Flowering Time in Soybean

Molecular Plant 2020年第5期13卷 745-759页

作者： Cong Li Ying-hui Li Yanfei Li Hongfeng Lu Huilong Hong Yu Tian Hongyu Li Tao Zhao Xiaowei Zhou Jun Liu Xinan Zhou Scott A.Jackson bin Liu Li-juan Qiu The National Key Facility for Crop Gene Resources and Genetic Improvement(NFCRI) Institute of Crop ScienceChinese Academy of Agricultural SciencesBeijingP.R.China Novogene bioinformatics Institute BeijingP.R.China Key Laboratory of Oil Crop biology(MOA) Oil Crops Research Institute of Chinese Academy of Agriculture SciencesWuhanChina Center for Applied Genetic Technologies University of GeorgiaAthensGAUSA

Improved soybean cultivars have been adapted to grow at a wide range of latitudes,enabling expansion of cultivation ***,the genetic basis of this broad adaptation is still not ***,we report the identification of gmprr3b as a major flowering time regulatory gene that has been selected during domestication and genetic improvement for geographic *** a genome-wide association study of a diverse soybean landrace panel consisting of 279 accessions,we identified 16 candidate quantitative loci associated with flowering time and maturity *** strongest signal resides in the known flowering gene E2,verifying the effectiveness of our *** detected strong signals associated with both flowering and maturity time in a genomic region containing *** analysis revealed that gmprr3bH6 is the major form of gmprr3b that has been utilized during recent breeding of modern *** profiling analysis showed that gmprr3bH6 displays rhythmic and photoperiod-dependent expression and is preferentially induced under long-day *** of gmprr3bH6 increased main stem node number and yield,while knockout of gmprr3bH6 using CRISPR/Cas9 technology delayed growth and the floral ***3bH6 appears to act as a transcriptional repressor of multiple predicted circadian clock genes,including GmCCAIa,which directly upregulates J/GmELF3a to modulate flowering *** causal SNP(Chr12:5520945)likely endows gmprr3bH6 a moderate but appropriate level of activity,leading to early flowering and vigorous growth traits preferentially selected during broad adaptation of landraces and improvement of cultivars.

关键词： flowering time soybean landrace domestication genome-wide association study gmprr3b circadian clock

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