Estimates of the biodiversity based on the ubiquitous monitoring / genotyping of the rare plants around the lakeshore of Lake Biwa.

基于对琵琶湖湖岸周围稀有植物的普遍监测/基因分型对生物多样性的估计。

• 批准号: 21310152
• 负责人: KANEKO Yuko
• 金额: $ 10.82万
• 依托单位: Lake Biwa Environmental Research Institute
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21310152/
• 关键词: 生物多様性保全; レッドリスト; 植物; 遺伝構造; 絶滅確率; 希少植物; 保全遺伝学; 数理モデル; GIS; 生物多様性; 2倍体植物; 遺伝的多様性; 集団遺伝解析; 集団動態; 貴重植物

We investigated the genetic structure of Lake Biwa populations of (i) Lathyrus japonicus, (ii)Vitex rotundifolia, (iii) Euphorbia adenochlora and (iV) Carex vesicaria in Japan, using newly developed microsatellite loci and chloroplast DNA haplotypes. The genetic diversity was significantly lower in the inland (Lake Biwa) populations than coastal ones in the two beach species (i and ii). In addition, STRUCTURE and phylogenetic analyses supported robust genetic differentiation between the inland-coastal populations. Thus, Lake Biwa’s populations might have experienced a founder effect during the initial migration to Lake Biwa and genetic drift during inland isolation. The genetic diversity of the Lake Biwa populations of the two floodplain plants (iii and iv) was also low, showing that numbers of genets were smaller than that of ramets. We collected 425 papers of 12 Red list species, which we focused on this project, to obtain the information on their life history and reproductive property. Furthermore, we developed a computer simulation program in which fecundity strongly depends on genetic structure of the population. It enables us to quantify the relationship between the population genetic structure and extinction probability due to inbreeding depression.

我们利用新开发的微卫星位点和叶绿体 DNA 单倍型，研究了日本琵琶湖种群 (i) 山黧豆 (Lathyrus japonicus)、(ii) 牡荆 (Vitex rotundifolia)、(iii) 大戟 (Euphorbia adenochora) 和 (iV) 苔草 (Carex vesicaria) 的遗传结构。两个海滩物种（i 和 ii）的内陆（琵琶湖）种群数量显着低于沿海种群。系统发育分析支持内陆和沿海种群之间存在强大的遗传分化，因此，琵琶湖种群在最初迁移到琵琶湖期间可能经历了奠基者效应，并在内陆隔离期间经历了遗传漂变。漫滩植物（iii 和 iv）也较低，表明基因数量小于分株数量。我们收集了本项目重点关注的 12 个红色名录物种的 425 篇论文，以获取有关信息。此外，我们开发了一个计算机模拟程序，其中繁殖力很大程度上取决于种群的遗传结构，它使我们能够量化种群遗传结构与近交衰退导致的灭绝概率之间的关系。

项目成果

Isolation and characterisation of microsatellite loci in the beach pea, Lathyrus ja-ponicus.

海滩豌豆、山黧豆微卫星位点的分离和表征。

• DOI: 10.3732/ajb.1100268
• 发表时间: 2011
• 期刊: American Journal of Botany
• 影响因子: 3
• 作者: Ohtsuki;T.;Kaneko;Y.;Mitsui;Y.;Setoguchi;H.
• 通讯作者: H.

滋賀県で大切にすべき野生生物-滋賀県レッドデータブック2010年版-

滋贺县值得珍惜的野生动物 - 滋贺县红皮书2010年版 -

• 发表时间: 2011
• 作者: Suzuki;M.;Sugiura;H.;高井潔司;内海成治;末近浩太;長縄宣博;京野完;金子有子(共著)
• 通讯作者: 金子有子(共著)

琵琶湖に陸封されたハマエンドウと海浜集団の間に生じた光合成特性の分化

琵琶湖滨海种群和内陆滨种群光合特性的差异

• 发表时间: 2013
• 作者: Kaneko;Y. and T. Takada.;渡邉浩平;赤尾光春;谷垣真理子;瀬戸口 浩彰
• 通讯作者: 瀬戸口 浩彰

Recent colonization of a coastal plant into inland habitats at an ancient freshwater lake, Lake Biwa.

最近，一种沿海植物移居到古代淡水湖琵琶湖的内陆栖息地。

• 发表时间: 2013
• 作者: Setoguchi;H.
• 通讯作者: H.

Effects of habitat fragmentation on population structure and genetic diversity of Machilus thunbergii.

生境破碎化对楠种群结构和遗传多样性的影响。

• 发表时间: 2012
• 作者: Watanabe;S.;Y. Kaneko;Y. Maesako;N. Noma
• 通讯作者: N. Noma