Delimitation of cryptic species of the Scytosiphon lomentaria complex (Scytosiphonaceae, Phaeophyceae) in Japan, based on mitochondrial and nuclear molecular markers

Kazuhiro Kogame, Shozo Ishikawa, Kei Yamauchi, Shinya Uwai, Akira Kurihara, Michio Masuda

研究成果: Contribution to journalArticle査読

18 被引用数 (Scopus)

抄録

Scytosiphon lomentaria (Scytosiphonaceae, Ectocarpales) is believed to include some cryptic species, particularly in the Pacific. We attempted to delimit these species in Japan using mitochondrial cox1 and cox3 and nuclear ITS2 and the second intron of the centrin gene (cetn-int2). Fifty-three cox1+cox3 mitotypes, 26 ITS2 ribotypes and 45 cetn-int2 haplotypes were found in 107 samples collected from 33 localities in Japan. Based on phylogenetic analyses, similar sequence types were grouped into ten mitogroups, eight ribogroups and six cetn-int2 haplogroups (sequence-type groups). From the molecular trees and combinations of the mito-, ribo- and haplogroups, three cryptic species were apparent (Groups I-III). Group I, widely distributed on Pacific coasts, was highly supported by all molecular trees, whereas Groups II (North Pacific) and III (Northwestern Pacific and Australasia) were more closely related to each other. However, sequence-type-group combinations that would be characteristic of hybrids between Groups II and III were not detected, suggesting no gene flow between the two Groups. Further investigations of an additional 127 sympatrically growing plants supported the absence of gene flow between Groups II and III. Four samples did not belong to any of the Groups I-III and possibly represent additional species.

本文言語英語
ページ(範囲)167-177
ページ数11
ジャーナルPhycological Research
63
3
DOI
出版ステータス出版済み - 7 1 2015

All Science Journal Classification (ASJC) codes

  • 水圏科学
  • 農業および生物科学(その他)
  • 植物科学

フィンガープリント

「Delimitation of cryptic species of the Scytosiphon lomentaria complex (Scytosiphonaceae, Phaeophyceae) in Japan, based on mitochondrial and nuclear molecular markers」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル