Molecular Phylogeny of Laminariales (Phaeophyceae) deduced from rRNA gene sequences

从 rRNA 基因序列推导出海带目（褐藻纲）的分子系统发育

• 批准号: 05640778
• 负责人: KAWAI Hiroshi
• 金额: $ 1.41万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 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/en/grant/KAKENHI-PROJECT-05640778/
• 关键词: Phaeophyceae; Molecular Phylogeny; rDNA; Laminariales; Taxonomy; _rDNA

Gene sequences of 18S rRNA gene and the ITS region of rRNA gene were studied in the following species of the Laminariales, in order to clarify the phylogenetic relationships among the members of primitive Laminariales (kelps) : Pseudochorda nagaii, Pseudochorda gracilis (Pseudochordaceae) ; Chorda filum (Chordaceae) ; Undaria pinnatifida (Alariaceae). 18S rDNA sequence was also studied in Myelophycus simplex as an out group, whose ordinal systematic position is in question. Two species of Pseudochorda (P.nagaii and P.gracilis) were shown to be phylogenetically very close in spite of their differences in the gametophyte morphology. Undaria and Costaria (Laminariaceae) showed close relationship and Chorda filum showed rather distant position from Pseudochorda spp., Undaria and Costaria. These results agree with the taxonomy based on their sporophyte morphology and the nature is sexual attractants.

对海带目（Laminariales）的以下几个种的18S rRNA基因序列和rRNA基因的ITS区序列进行了分析，以阐明原始海带目（Laminariales）成员：Pseudochorda nagaii、Pseudochorda gracilis（Pseudochordaceae）、Chorda filum（Chordaceae）和裙带菜（Undaria pinnatifida（Alariaceae））的系统发育关系。对作为外类群的单纯髓腔菌（Myelophycussimplex）的18SrDNA序列进行了研究，其系统学位置尚存在争议。两种拟脊索动物（P.nagaii和P.gracilis）尽管在配子体形态上存在差异，但它们在生殖遗传上非常接近。裙带菜属（Undaria）与海带科（Laminariaceae）的Costaria亲缘关系较近，而脊索属（Chorda filum）与伪脊索属（Pseudochorda spp.）Undaria和Costaria。这些结果与孢子体形态学分类相一致，其性质为性引诱剂。

项目成果

Kawai, H.: "Morphology and life history of Kurogiella saxatilis gen.et sp.nov. (Chordariales, Phaeophyceae)." Phycologia. 32. 462-467 (1993)

Kawai, H.：“Kurogiella saxatilis gen.et sp.nov.（Chordariales，Phaeophyceae）的形态学和生活史。”

Peters, A.F., Kawai, H.and Novaczek, I.: "Intraspecific sterility barrier confirms that introduction of Sphacelaria divaricata (Phaeophyceae, Chordariales) into the Mediterranean was from Japan." Hydrobiologia. 260/261. 31-36 (1993)

Peters, A.F.、Kawai, H. 和 Novaczek, I.：“种内不育屏障证实，Sphacelaria divaricata（褐藻纲、绳索菌目）从日本引入地中海。”

Kawai, H., Boland, W.and Muller, D.G: "Sexual reproduction and sexual pheromones in Myelophycus simplex (Harvery) Papenfuss (Phaeophyceae)." Jpn.J.Phycol. 42. 227-231 (1994)

Kawai, H.、Boland, W. 和 Muller, D.G：“单纯髓藻（Harvery）Papenfuss（褐藻纲）的有性生殖和性信息素。”

Kawai, H.: "Morphology and life history of Kurogiella saxatilis gen. et sp. nov (Chordariales, Phaeophyceae)" Phycologia. 32. 462-467 (1993)

Kawai, H.：“Kurogiella saxatilis gen. et sp. nov（Chordariales，Phaeophyceae）的形态学和生活史”Phycologia。

Peters, A.: "Intraspecific sterility barrierconfirons that introduction of Sphaerctrichia divaricata into Mediterranean was from Japan" Mydrobiologia. 260/261. 31-36 (1993)

Peters, A.：“种内不育屏障确认 Sphaerctrichia divaricata 是从日本引入地中海的”Mydrobiologia。