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植物研究 ›› 2024, Vol. 44 ›› Issue (4): 491-501.doi: 10.7525/j.issn.1673-5102.2024.04.002

• 植物分类学 • 上一篇    

凤尾蕨科金毛裸蕨属的分类地位及旱蕨属范围

殷玥1, 杨文利2, 胡虹雨1, 张钢民1()   

  1. 1.北京林业大学生态与自然保护学院,北京 100083
    2.河北农业大学园林与旅游学院,保定 071000
  • 收稿日期:2023-11-30 出版日期:2024-07-20 发布日期:2024-07-09
  • 通讯作者: 张钢民 E-mail:gary1967@bjfu.edu.cn
  • 作者简介:殷玥(1999—),女,硕士研究生,主要从事蕨类的分类和系统发育研究。
  • 基金资助:
    国家自然科学基金项目(31270253)

Taxonomic Status of Paragymnopteris in Pteridaceae and Its Relationship with Pellaea

Yue YIN1, Wenli YANG2, Hongyu HU1, Gangmin ZHANG1()   

  1. 1.College of Ecology and Nature Conservation,Beijing Forestry University,Beijing 100083
    2.College of Landscape Architecture and Tourism,Hebei Agricultural University,Baoding 071000
  • Received:2023-11-30 Online:2024-07-20 Published:2024-07-09
  • Contact: Gangmin ZHANG E-mail:gary1967@bjfu.edu.cn

摘要:

碎米蕨类(cheilanthoid)由于其形态上普遍存在的趋同进化现象,是分类最为困难的类群之一。金毛裸蕨属(Paragymnopteris)虽然仅有5种,但被不同学者分置于若干不同属内,分类地位一直存有争议。该研究基于7个叶绿体基因片段串联数据集、叶绿体基因组及核糖体DNA数据集,探究了金毛裸蕨属与其他碎米蕨类群之间的系统发育关系。结果表明:金毛裸蕨属、旱蕨属(Pellaea)、Astrolepis 3个属具有很近的亲缘关系并共同构成了旱蕨群(pellaeoid group)。金毛裸蕨属的5个物种在系统发育树上形成了2个分支,各自与旱蕨属的成员聚在一起并得到了强烈的支持。基于这一结果,建议对旱蕨属范围重新定义,并将金毛裸蕨属并入旱蕨属中。

关键词: 金毛裸蕨属, 旱蕨属, 碎米蕨类, 系统发育, 分类修订, 凤尾蕨科

Abstract:

The taxonomy of Cheilanthoid ferns is difficult due to morphological convergence, and there are only five species in Paragymnopteris, the taxonomy of this genus is still controversial with its members assigned to several different genera by different scholars. In this paper, the phylogenetic relationships between Paragymnopteris and other cheilanthoid fernsbased on the datasets of seven tandem chloroplast gene segments, the chloroplast genome, and the ribosomal DNA were investigated, respectively. The results showed that these three genera formed a well-supported monophyletic clade and constituted the pellaeoid group. The five species of Paragymnopteris formed two clades and each clustered with members of Pellaea. Based on the above results, this study suggested that the Pellaea should be redefined and incorporated with the Paragymnopteris into the same genus.

Key words: Paragymnopteris, Pellaea, Cheilanthoid, phylogeny, taxonomic revision, Pteridaceae

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