Academy of Agriculture and Forestry Sciences, Qinghai University, Xining 810016, China.
National Key Laboratory of Sanjiangyuan Ecology and Plateau Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China.
Genes (Basel). 2023 Feb 16;14(2):507. doi: 10.3390/genes14020507.
Plant height is an important characteristic, the modification of which can improve the ability of stress adaptation as well as the yield. In this study, genome-wide association analysis was performed for plant height traits in 370 potato cultivars using the tetraploid potato genome as a reference. A total of 92 significant single nucleotide polymorphism (SNP) loci for plant height were obtained, which were particularly significant in haplotypes A3 and A4 on chromosome 1 and A1, A2, and A4 on chromosome 5. Thirty-five candidate genes were identified that were mainly involved in the gibberellin and brassinolide signal transduction pathways, including the gene, , , and . Among them, and were only present on chromosome 1, with in all four haplotypes and in haplotype A3. This could lead to more effective genetic loci for molecular marker-assisted selection breeding as well as more precise localization and cloning of genes for plant height traits in potatoes.
株高是一个重要的特征，对其进行修饰可以提高作物的抗逆能力和产量。本研究利用四倍体马铃薯基因组作为参考，对 370 个马铃薯品种的株高性状进行了全基因组关联分析。共获得了 92 个与株高显著相关的单核苷酸多态性（SNP）位点，其中在染色体 1 上的 A3 和 A4 以及染色体 5 上的 A1、A2 和 A4 上的 SNP 位点特别显著。鉴定出 35 个候选基因，主要涉及赤霉素和油菜素内酯信号转导途径，包括 、 、 、 等基因。其中， 和 仅存在于染色体 1 上， 在所有四个单倍型中都有， 在单倍型 A3 中也有。这可能为分子标记辅助选择育种提供更有效的遗传位点，以及更精确地定位和克隆马铃薯株高性状的基因。
