高粱
基因座(遗传学)
生物
基因
候选基因
数量性状位点
单核苷酸多态性
基因组
遗传学
生物技术
农学
植物
基因型
作者
Hari D. Upadhyaya,Lihua Wang,Chudamani Sharma Prakash,Yanlong Liu,Li Gao,Meng Ruirui,K. Seetharam,C. L. L. Gowda,K. Ganesamurthy,Shailesh Singh,Rajendra Kumar,Jieqin Li,Yihong Wang
摘要
Abstract Sorghum is a feed/industrial crop in developed countries and a staple food elsewhere in the world. This study evaluated the sorghum mini core collection for days to 50% flowering (DF), biomass, plant height (PH), soluble solid content (SSC), and juice weight (JW), and the sorghum reference set for DF and PH, in 7–12 testing environments. We also performed genome-wide association mapping with 6 094 317 and 265 500 single nucleotide polymorphism markers in the mini core collection and the reference set, respectively. In the mini core panel we identified three quantitative trait loci for DF, two for JW, one for PH, and one for biomass. In the reference set panel we identified another quantitative trait locus for PH on chromosome 6 that was also associated with biomass, DF, JW, and SSC in the mini core panel. Transgenic studies of three genes selected from the locus revealed that Sobic.006G061100 (SbSNF4-2) increased biomass, SSC, JW, and PH when overexpressed in both sorghum and sugarcane, and delayed flowering in transgenic sorghum. SbSNF4-2 encodes a γ subunit of the evolutionarily conserved AMPK/SNF1/SnRK1 heterotrimeric complexes. SbSNF4-2 and its orthologs will be valuable in genetic enhancement of biomass and sugar yield in plants.
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