Phylogeny of basal monocotyledons -as the first step to an investigation on non-synchronism between phenotype evolution and genotype evolution-

基础单子叶植物的系统发育 -作为研究表型进化和基因型进化之间不同步性的第一步-

基本信息

批准号：
11640701
负责人：
TAMURA Minoru N.
金额：
$ 2.3万
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：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

项目摘要

In the present study, first, we revealed that a molecular phylogenetic tree based on DNA sequences of plastid matK gene provides much better resolution of major evolutionary relationships of the monocotyledons than a molecular phylogenetic tree based on DNA sequences of plastid rbcL gene. Second, using DNA sequences of both matK and rbcL genes, we constructed the molecular phylogenetic tree that provides the best resolution of major evolutionary relationships of the monocotyledons among molecular phylogenetic trees published until the present time as far as I know. And, we proved that Liliaceae are not monophyletic and can be divided into at least five lineages, i.e., Liliales, Asparagales, Tofieldiaceae, Nartheciaceae, and Petrosavia-group. In the matK + rbcL tree of the monocotyledons, Acorales is diverged as the first branch, followed successively by Alismatales-group (including Tofieldiaceae), Petrosavia-group, Dioscoreales-group (including Nartheciaceae), Liliales, Asparagales, an … More d Commelinales-group. And, we established a framework of a new classification of the monocotyledons based on molecular information.Next, we reexamined taxonomy of the Tofieldiaceae, which are one of the most morphologically primitive monocotyledonous families and are important in considering the ancestral morphology of the monocotyledons. And, we concluded that the Isidrogalvia, which has fully connate carpels, should be transferred from the Tofieldiaceae to Nartheciaceae. After this transfer, the Tofieldiaceae correspond only to plants with almost free carpels, and the morphological primitiveness of the Tofieldiaceae became more definitive. The calyculus, which the Tofieldiaceae and Isidrogalvia share, turned out to have evolved in parallel in the lineages of Tofieldiaceae and Nartheciaceae.Further, we revealed relationships among families, genera and species of the Convallariaceae (Asparagales) and their allied families, in which the taxonomy was quite controversial and the chromosomal characters are highly diversified, and estimated the direction of evolution of the chromosome numbers and karyotypes. Less

在本研究中，首先，我们揭示了基于质体MATK基因DNA序列的分子系统发育树比基于基于质体RBCL基因的DNA序列的分子系统发育树的主要进化关系更好地解决了单子叶植物的主要进化关系。其次，使用MATK和RBCL基因的DNA序列，我们构建了分子系统发育树，该树提供了分子形成的主要进化关系的最佳分辨率，据我所知，直到今天，分子系统发育树之间发表了分子系统发育树。而且，我们证明了Liliaceae不是单系的，并且可以分为至少五行，即Liliales，Asparagales，Tofieldiaceae，tofieldiaceae，nartheciaceae和Petrosavia-group。在单子叶植物的MATK + RBCL树中，Acorales作为第一个分支分歧，然后是Alismatales-Group（包括Tofieldiaceae），Petrosavia-group，Dioscoreales-group（包括Nartheciaceae）（包括Nartheciaceae），Liliales，liliales，asparagales，Asparagales，Asparagales，Asparagales，一个更加友好的人。而且，我们建立了一个基于分子信息的新单子叶植物的新分类的框架。接下来，我们重新审查了tofieldiaceae的分类法，tofieldiaceae是最原始的单子叶植物家庭之一，并且在考虑单体元素的祖先形态方面很重要。而且，我们得出的结论是，具有完全固定皮层的Isidrogalvia应从tofieldiaceae转移到含水症。转移之后，tofieldiaceae仅对应于几乎游离皮层的植物，而tofieldiaceae的形态原始性变得更加确定。牛皮状科和伊西德罗加氏菌所共有的乳ha骨在tofieliaceae和tofieldiaceae和nartheciaceae的谱系中都相似地进化。估计染色体数和核型的演变方向。较少的