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Phylogeny and classification of the bamboos (Poaceae: Bambusoideae) based on molecular and morphological data.

机译：基于分子和形态学数据的竹子（禾本科：Bambusoideae）的系统发育和分类。

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摘要

Chloroplast ndhF gene sequences and morphological and leaf anatomical characters were analyzed separately and as combined data sets to reconstruct the phylogeny of subfamily Bambusoideae. The analyses further confirmed that the monophyletic bambusoid clade consists of only two monophyletic lineages: the woody bamboos, and the herbaceous olyroid bamboos. Buergersiochloa was resolved as the basal lineage in the herbaceous olyroids, whereas Pariana/Eremitis was sister to the rest of the olyroids. The woody bamboos were divided into two main groups: temperate woody bamboos and tropical woody bamboos; and the tropical clade was further subdivided along geographic lines into the Old World woody bamboos and the New World woody bamboos. Puelia was resolved as the most basal lineage of the 'higher grasses' and thus was excluded from the bambusoid clade. Streptogyneae joined the oryzoids, including the Oryzeae and Ehrharteae, to form another separate monophyletic clade. The results of this study indicate that the current Bambusoideae is not acceptable phylogenetically. Therefore a new circumscription of the Bambusoideae with two tribes is proposed in which only members of the bambusoid clade are included; the woody bamboos are classifed as one tribe, the Bambuseae, and the herbaceous olyroid bamboos are classified in another tribe, the Olyreae.; In order to provide additional resolution of phylogenetic relationships within the bambusoid clade, an attempt to generate nuclear ribosomal ITS sequence data of bamboos was made. However, polymerase chain reaction amplification (PCR) led to the recovery of fungal instead of bamboo sequences. Phylogenetic analyses based on the 5.8S sequences indicated that all the sequences belonged to basidiomycetes and that none was an ascomycete. A diverse assemblage of basidiomycetes was isolated from different bamboo hosts and various fungi coexisted in the same host plant. No evidence showed that closely related fungi were associated with closely related bamboo hosts. True bamboo ITS sequences were obtained only after leaf surface sterilization before DNA isolation. This study highlights the possibility of inadvertent PCR amplification of "contaminating DNA" in molecular phylogenetic studies. The results also indicate that a close ecological association between epiphytic basidiomycetes and bamboo leaves may exist, but further study is needed.
机译：分别分析叶绿体ndhF基因序列以及形态和叶片解剖特征，并作为组合数据集来重建竹节亚科的系统发育。分析进一步证实，单系的类球果进化枝仅由两个单系的谱系组成：木本竹和草本类胡桃木。 Buergersiochloa被解析为草本类类脂体的基础血统，而Pariana / Eremitis是其余类脂体的姐妹。木质竹子分为两大类：温带木质竹子和热带木质竹子；温带木质竹子和热带木质竹子。热带枝条又按地理区域进一步细分为旧世界木质竹子和新大陆木质竹子。 Puelia被确定为“高等草丛”中最基本的血统，因此被排除在球茎类进化枝之外。链霉菌科与包括Oryzeae和Ehrharteae在内的Oryzoids一起形成另一个单独的单系进化枝。这项研究的结果表明，目前的竹杆菌科在系统发育上是不可接受的。因此，提出了一个新的圈圈线虫科与两个部落的界限，其中只包括了球杆类进化枝的成员。木本竹子被归类为Bambuseae部落，草木类竹本归类为Olyreae部落。为了提供对球状进化枝内系统发育关系的进一步解析，尝试产生竹子的核糖核糖体ITS序列数据。但是，聚合酶链反应扩增（PCR）导致真菌而不是竹序列的恢复。基于5.8S序列的系统发育分析表明，所有序列均属于担子菌，而没有一个是子囊菌。从不同的竹寄主中分离出多种担子菌，在同一寄主植物中共存各种真菌。没有证据表明密切相关的真菌与密切相关的竹宿主有关。真正的竹ITS序列仅在DNA分离前的叶表面灭菌后获得。这项研究突显了在分子系统发育研究中无意中扩增“污染性DNA”的可能性。结果还表明，附生的担子菌和竹叶之间可能存在紧密的生态联系，但还需要进一步研究。

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  • 作者

    Zhang, Weiping.;

  • 作者单位

    Iowa State University.;

  • 授予单位 Iowa State University.;
  • 学科 Biology Botany.
  • 学位 Ph.D.
  • 年度 1996
  • 页码 161 p.
  • 总页数 161
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 植物学;
  • 关键词

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