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Molecular phylogeography of primitive monocotyledons at species level -with special reference to synchronism and non-synchronism on geographical variation of phenotype and genotype-

物种水平原始单子叶植物的分子系统发育地理学-特别涉及表型和基因型地理变异的同步性和非同步性-

基本信息

批准号：
13640699
负责人：
TAMURA Minoru
金额：
$ 2.11万
依托单位：
Osaka City University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

项目摘要

In the present study, we revealed that an analysis of DMA sequence of plastid tmK gene 5' intron region is often very effective in order to construct the phylogenetic tree that provides high resolution of relationships among species / infraspecific taxa Thus, we conducted not a single gene analysis of matK but a combined analysis of tmK 5' intron and matK to construct the exact phylogenetic tree of Heloniopsis, which is one of the morphologically primitive genera among the monocotyledons. And, using this phylogenetic tree, we studied this genus from phylogenetical, phylogeographical and taxonomical points of view. As the results, we revealed that the Korean Heloniopsis, which has been considered to be the same with H. orientals in Japan, consists of two new species. And we named them H. tubiflora and H. koreana, respectively. We revealed also that the plants in Kanto Province, which have been assigned to H. orientals var. flavida (=H. breviscapa var flavida), are H. breviscapa var, breviscapa, and H. breviscapa var. breviscapa is disjunctly distributed in Kanto Province and Chugoku-Shikoku-Kyushu Provinces. Consequently, we established a new classification of Heloniopsis, where seven species and one variety are recognized.In the present study, besides the molecular analyses, we analyzed morphological characters of Polygonatum and Hosta (Liliaceae sensu lato) and Dioscorea (Dioscoreaoeae), which are all regarded as morphologically primitive monocotyledons. And, we proposed several new species, new varieties and new combinations. Further, the several Polygonatum taxa that have been considered as independent species turned out to be hybrids between different species. These results are included in Liliaceae and Dioscoreaceae chapters of Flora of Japan IVb (Kodansha, Tokyo).

在本研究中，我们发现，对质体 tmK 基因 5' 内含子区域的 DMA 序列进行分析通常非常有效，以构建提供物种/种内分类单元之间关系的高分辨率的系统发育树。因此，我们不是对 matK 进行单一基因分析，而是对 tmK 5' 内含子和 matK 进行组合分析，以构建 Heloniopsis 的精确系统发育树，Heloniopsis 是形态学上原始的系统发育树之一。单子叶植物中的属。并且，利用这个系统发育树，我们从系统发育、系统发育地理学和分类学的角度研究了这个属。结果，我们发现韩国的 Heloniopsis 被认为与日本的 H. orientals 相同，它由两个新种组成。我们分别将它们命名为 H. tubeiflora 和 H. koreana。我们还透露，关东省的植物已被分配给 H. orientals var. flavida (=H. breviscapa var flavida) 是 H. breviscapa var、breviscapa 和 H. breviscapa var。 breviscapa 间断分布于关东省和中国、四国、九州省。因此，我们建立了Heloniopsis的新分类，其中识别了7个种和1个变种。在本研究中，除了分子分析之外，我们还分析了黄精和玉簪属（Liliaceae sensu lato）和薯蓣属（Dioscoreaoe）的形态特征，这些植物都被视为形态上原始的单子叶植物。并提出了多个新品种、新品种和新组合。此外，几个被认为是独立物种的黄精类群最终被证明是不同物种之间的杂种。这些结果包含在《日本植物志 IVb》（讲谈社，东京）的百合科和薯蓣科章节中。