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A phylogenetic study of primitive angiosperms

原始被子植物的系统发育研究

基本信息

批准号：
05304009
负责人：
TOBE Hiroshi
金额：
$ 5.38万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05304009/
关键词：
Fossil Phylogeny Paleobotany Neobotany Angiosperms Ephedra Ceratophyllaceae Gymnosperms 起源白亜紀花粉遺伝子系統マツモ

项目摘要

In this research project, the phylogeny of primitive angiosperms was studied from a viewpoint of paleobotany by M.Nishida, H.Nishida, Suzuki, and Takahashi as well as from a viewpoint of neobotany by Tobe, Ueda, Kosuge, and Oginuma.M.Nishida collected a permineralized angiosperm fructification from the Upper Cretaceous of Monbetsu-cho, Hokkaido and described its reproductive structure similar to the one of Magnoliales and paleoherbs ; H.Nishida collected a possibly dileniid angiosperm fructification from the Upper Cretaceous of Kodaira-cho, Hokkaido and discussed an evolutionary pathway from a magnoliid flower to a dileniid one ; Suzuki analyzed the possibly earliest dicotyledonous wood fossils from the Upper Cretaceous of Hokkaido, and of Saghalien of Russia, and described details of their wood structure ; Takahashi identified 3 distinct types of pollen including the one of Clavatipollenites from the Upper Cretaceous of Saghalien of Russia and, in addition, 8 distinct types of ephedroid pollen from the Lower Cretaceous of Hokkaido.On the other hand, Tobe and Oginuma both collected living materials of Ceratophyllum from various places in Japan to analyze its reproductive features and found 2n=78 and 2n=120 for the first time ; Ueda and Kosuge both analyzed a phylogeny of Ranunculaceae as one of representatives of primitive angiosperms on the basis of DNA sequences of glyceraldehyde-3-phosphate dehydrogenase(gap A), and discussed a possibility that is is comprised of multiple gene component.In these researches, we have accumulated many various information on evolutionary and morphological aspects of primitive angiosperms.

本研究从古植物学的角度对原始被子植物的系统发育进行了研究，从新植物学的角度对Tobe、Ueda、Kosuge和oginuma的系统发育进行了研究。nishida收集了北海道蒙别草上白垩世的被子植物过矿化果实，并描述了其生殖结构与木兰花和古草本植物相似；H.Nishida在北海道Kodaira-cho的上白垩世收集了一株可能是dileniid的被子植物果实，并讨论了木兰花到dileniid花的进化途径；铃木分析了北海道上白垩世和俄罗斯Saghalien地区可能最早的双子叶木化石，并描述了它们的木结构细节；Takahashi鉴定出3种不同类型的花粉，其中包括来自俄罗斯Saghalien上白垩统的Clavatipollenites，以及来自北海道下白垩统的8种不同类型的麻黄类花粉。另一方面，Tobe和Oginuma在日本各地收集了角藻的生活资料，分析了其生殖特征，首次发现2n=78和2n=120；Ueda和Kosuge都根据甘油三酯-3-磷酸脱氢酶（gap a）的DNA序列分析了毛毛科作为原始被子植物代表之一的系统发育，并讨论了其由多基因组成的可能性。在这些研究中，我们积累了许多关于原始被子植物的进化和形态方面的信息。