Genetic diversity and population history of cold temperate pine species in north-east Asia

东北亚冷温带松树种的遗传多样性和种群历史

• 批准号: 21780141
• 负责人: AIZAWA Mineaki
• 金额: $ 1.66万
• 依托单位: Utsunomiya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21780141/
• 关键词: 遺伝的多様性; 第四紀; チョウセンゴヨウ; 分布変遷; 北東アジア; ミトコンドリアDNA; 葉緑体DNA; 核DNA; SSRマーカー; 系統地理; マツ科

This study aimed to delineate the population history during the Quaternary of cold temperate pine, Korean pine (Pinus koraiensis), in north-east Asia. Range-wide genetic variation was assessed using mitochondrial DNA (mtDNA) and chloroplast DNA across the entire distribution range of the species. Genetic diversity of mtDNA haplotypes showed a complete loss of the diversity across the continental populations (H_T, total gene diversity, =0) exhibiting a single haplotype in spite of the extensive species natural range with large-sized populations. In contrast, a higher level of genetic diversity was observed in Japanese populations (H_T=0.502) harbouring three mtDNA haplotypes despite the restricted natural range with quite small populations. The loss of genetic diversity and fixation of the single haplotype in the continental populations could result from the contraction into a single refugium in the past ; the higher level of genetic diversity of Japanese populations suggested that Korean pine retained large-sized populations in Japan during the Pleistocene.

这项研究旨在描述东北亚冷气松树（韩国松树（Pinus koraiensis））第四纪期间的人口史。使用线粒体DNA（mtDNA）和整个物种分布范围内的叶绿体DNA评估范围范围的遗传变异。 mtDNA单倍型的遗传多样性显示，尽管大陆种群的多样性（H_T，总基因多样性，= 0）的多样性完全丧失，尽管具有大型种群的广泛物种自然范围，但表现出单个单倍型。相比之下，尽管天然范围受限制，但人群限制了，但日本种群中观察到较高的遗传多样性（H_T = 0.502），该遗传多样性具有三种mtDNA单倍型。过去，大陆种群中单个单倍型的遗传多样性的丧失可能是由于过去的收缩而导致的。日本人口的遗传多样性较高，表明韩国在更新世期间在日本保留了大型人群。