首页|Genome-wide association study identifies the genetic basis of key agronomic traits in 207 sugar beet accessions
Genome-wide association study identifies the genetic basis of key agronomic traits in 207 sugar beet accessions
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Sugar beet(Beta vulgaris)has emerged as one of the two primary crops,alongside sugarcane,for global sugar production.Com-prehensively understanding sucrose synthesis,transport,and accumulation in sugar beet holds great significance for enhancing sugar production.In this study,we collected a diverse set of 269 sugar beet accessions worldwide and measured 12 phenotypes,comprising biomass,soluble sugar content,and 10 taproot-related traits.We re-sequenced 207 accessions to explore genetic diversity and population structure.Then we employed a genome-wide association study(GWAS)and RNA-seq to identify single-nucleotide polymorphisms and genes associated with natural phenotypic variations.Our findings revealed a panel of genes potentially regulating biomass and sugar accumulation,notably the dual-role gene UDP-glucose 4-epimerase,which genetically balances sugar accumulation and cell wall synthesis.In summary,this study provides a foundation for molecular breeding in sugar beet.
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