祖先性状重建法揭示铁线蕨属植物孢子表面纹饰的形态多样性及其演化  

Ancestral state reconstruction reveals the diversity and evolution of spore ornamentation in Adiantum(Pteridaceae)

作　　者：赵国华[1,2] 王莹[2] 商辉[2] 周喜乐 王爱华 李玉峰[5] 王晖[1] 刘保东[6] 严岳鸿[2] Guohua Zhao;Ying Wang;Hui Shang;Xile Zhou;Aihua Wang;Yufeng Li;Hui Wang;Baodong Liu;Yuehong Yan(Fairylake Botanical Garden,Shenzhen&Chinese Academy of Sciences,Shenzhen,Guangdong 518004;Shanghai Chenshan Botanical Garden,Shanghai Chenshan Plant Science Research Center,Chinese Academy of Sciences,Shanghai 201602;Xiangxi Tujia and Miao Autonomous Prefecture Forest Resources Monitoring Center,Jishou,Hunan 416000;Key Laboratory of Beibu Gulf Environment Change and Resources Use of Ministry of Education,Nanning Normal University,Nanning 530001;School of Life Science,Hunan University of Science and Technology,Xiangtan,Hunan 411201;Harbin Normal University,Key Laboratory of Plant Biology,College of Heilongjiang Province,Harbin 150025)

机构地区：[1]深圳市中国科学院仙湖植物园,广东深圳518004 [2]上海辰山植物园,中国科学院上海辰山植物科学研究中心,上海201602 [3]湘西土家族苗族自治州森林资源监测中心,湖南吉首416000 [4]南宁师范大学北部湾环境演变与资源利用教育部重点实验室,南宁530001 [5]湖南科技大学生命科学学院,湖南湘潭411201 [6]哈尔滨师范大学植物生物学黑龙江省高校重点实验室,哈尔滨150025

出　　处：《生物多样性》2019年第11期1228-1235,共8页Biodiversity Science

基　　金：国家标本资源共享平台项目;科技部科技基础性工作专项(2013FY112100);生物多样性调查与评估项目(2019HJ2096001006);上海市绿化与市容管理局科学技术项目(G162416);湖南省教育厅科学研究项目(10C0720)。

摘　　要：蕨类植物孢子表面的纹饰形态复杂多样,在分类学和古生物学研究中具有重要意义,目前探索祖先性状演化常用形态学与系统发育学结合的方法。本文选取一回羽叶铁线蕨类植物为材料,用扫描电子显微镜观察其孢子形态,用5个叶绿体基因序列构建系统树,用最大似然法和最大简约法来分析孢子性状的演化。结果表明:一回羽叶铁线蕨类的孢子纹饰有5种类型,即光滑、粗糙、颗粒、疣状及瘤状;这一类群的祖先孢子纹饰有很大的可能是瘤状纹饰;疣状纹饰可能是由瘤状纹饰演化而来;孢子纹饰由简单向复杂演化,越进化的物种其孢子纹饰越复杂。Spore morphology is diverse and complex in ferns, thus serving as an important indicator of taxonomy. In conjunction, morphological traits and phylogeny are used to study taxonomy and recent character evolution. This study analyzes the evolution of spore ornamentation in once-pinnate maidenhair ferns(Adiantum) using scanning electron microscopy and ancestral state reconstruction. Our results show that there are five ornamental types in once-pinnate maidenhair ferns: psilate, scabrate, granulate, verrucate and tuberculate. The ancestral state of spore ornamentation in Adiantum is probably tuberculate, with verrucate ornamentation possibly deriving from tuberculate. We suggest that spore ornamentation evolved from simple to complex in Adiantum. In other words, the more evolutionary species, will with a more complex spore ornamentation.

关 键 词：蕨类 孢子纹饰 系统发育 性状演化 

分 类 号：Q945[生物学—植物学]