Whole-Genome Resequencing Identifies SNPs in Sucrose Synthase and Sugar Transporter Genes Associated with Sweetness in Coconut
文献类型： 外文期刊
作者： Khongmaluan, Manlika 1 ; Aesomnuk, Wanchana 2 ; Dumhai, Reajina 2 ; Pitaloka, Mutiara K. 3 ; Xiao, Yong 4 ; Xia, Rui 5 ; Kraithong, Tippaya 6 ; Phonsatta, Natthaporn 7 ; Panya, Atikorn 7 ; Ruanjaichon, Vinitchan 7 ; Wanchana, Samart 7 ; Arikit, Siwaret 1 ;
作者机构： 1.Kasetsart Univ Kamphaeng Saen Campus, Fac Agr Kamphaeng Saen, Dept Agron, Nakhon Pathom 73140, Thailand
2.Kasetsart Univ, Rice Sci Ctr, Nakhon Pathom 73140, Thailand
3.Natl Res & Innovat Agcy, Res Ctr Appl Bot, Jl Raya Jakarta Bogor KM 46, Bogor 16911, Indonesia
4.Chinese Acad Trop Agr Sci, Coconut Res Inst, Haikou 571339, Peoples R China
5.South China Agr Univ, Coll Hort, State Key Lab Conservat & Utilizat Subtrop Agrobio, Guangzhou 510640, Peoples R China
6.Chumphon Hort Res Ctr, Dept Agr, Bangkok 10900, Thailand
7.Natl Ctr Genet Engn & Biotechnol BIOTEC, 113 Thailand Sci Pk,Pahonyothin Rd, Pathum Thani 12120, Thailand
关键词： coconut; sweetness; sucrose metabolism; sucrose synthase; sugar transporter; allele mining; whole-genome resequencing
期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2024 年 13 卷 18 期
页码：
收录情况： SCI
摘要： Coconut (Cocos nucifera L.) is an important agricultural commodity with substantial economic and nutritional value, widely used for various products, including coconut water. The sweetness is an important quality trait of coconut water, which is influenced by genetic and environmental factors. In this study, we utilized next-generation sequencing to identify genetic variations in the coconut genome associated with the sweetness of coconut water. Whole-genome resequencing of 49 coconut accessions, including diverse germplasm and an F-2 population of 81 individuals, revealed similar to 27 M SNPs and similar to 1.5 M InDels. Sugar content measured by degrees Bx was highly variable across all accessions tested, with dwarf varieties generally sweeter. A comprehensive analysis of the sugar profiles revealed that sucrose was the major sugar contributing to sweetness. Allele mining of the 148 genes involved in sugar metabolism and transport and genotype-phenotype association tests revealed two significant SNPs in the hexose carrier protein (Cnu01G018720) and sucrose synthase (Cnu09G011120) genes associated with the higher sugar content in both the germplasm and F-2 populations. This research provides valuable insights into the genetic basis of coconut sweetness and offers molecular markers for breeding programs aimed at improving coconut water quality. The identified variants can improve the selection process in breeding high-quality sweet coconut varieties and thus support the economic sustainability of coconut cultivation.
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