...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mycologia >Phialide arrangement and character evolution in the helotialean anamorph genera Cadophora and Phialocephala
【24h】

Phialide arrangement and character evolution in the helotialean anamorph genera Cadophora and Phialocephala

机译：头足类无性类Cadophora和Phialocephala中Phialide的排列和性状进化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The dematiaceous hyphomycete genera Cadophora and Phialocephala, are anamorphs associated with mollisioid inoperculate discomycetes (Helotiales) and are delineated based on the complexity of the phialide arrangement with members of Cadophora producing solitary phialides and species of Phialocephata producing complex heads of multiple phiatides. A third phylogenetically related taxon, Leptodoniidium orchidicola, produces mostly indehiscent conidia that may represent non-functional phialides. Morphological characteristics of both sexual and asexual states of these and other fungi in a focal group of helotialean taxa were re-examined, in light of relationships shown by molecular phylogenetic analyses of rDNA ITS sequences, to determine the evolutionary significance of phialide arrangement. The focal species of Phialocephala formed a monophylefic clade, while five of six species of Cadophara including the type were in a separate clade along with L. archidicola. C. firdandica was placed in a third clade with species of Mehniornyces and Rhizoscyphas. We hypothesized that the ancestral state for species in Cadophora and Phialocephata is the production of sclerodurn-like heads of multiple phialides, which has been retained in most species assignable to Phialocephata. A reduction to solitary phialides occurred in the lineage leading to the clade containing most of the Cadophora species. Two possible reductions to non-functional phialides were identified: one in the Meliniomyces-C. finlandica-Chloridium pancisporum clade and another in the L. orchidicola and Mollisia "rhizophila" clade. A reversion to increased phialide complexity might have occurred in the clade containing C. fintandica and Ch. paucisporum. Our data and analyses also show a previously unrecognized relationship between teleomorph and anamorph morphology in that Mollisia species with smaller asci would be expected to have Phialocephata states while those with larger asci would be expected to have Cadophora states. Based on morphology and phylogenetic placement, L. orchidicola and C. hiberna are transferred respectively to Cadophom and Phialocephata.
机译：硬皮病菌丝体属Cadophora和Phialocephala属变体，与毛囊样不起作用的盘菌（Helotiales）相关，并根据phialide排列的复杂性进行了描述，其中Cadophora产生单生phialides，而Phophocephata产生多个phiat。第三种与系统发育相关的分类单元，兰花小钩Le，主要产生裂开的分生孢子，可能代表非功能性phialides。根据rDNA ITS序列的分子系统发育分析所显示的关系，重新检查了Helotealean类群的一个焦点小组中这些真菌和其他真菌的有性和无性状态的形态特征，以确定phialide排列的进化意义。 Phialocephala的焦点物种形成了单叶进化枝，而Cadophara的六种物种中的五种（包括该类型）与L. archidicola一起位于单独的进化枝中。杉木C. firdandica被放置在与Mehniornyces和Rhizoscyphas物种的第三条分支中。我们假设在Cadophora和Phialocephata中物种的祖先状态是多个phialides的硬皮鱼样头部的产生，在分配给Phialocephata的大多数物种中都保留了这种形态。世系中孤立的phialides减少，导致进化枝中含有大多数Cadophora物种。鉴定出两种可能的降低非功能性phialides的方法：一种在Meliniomyces-C中。 finlandica-Chloridium pancisporum进化枝和另一个在L.cyanicola和Mollisia的“ rhizophila”进化枝。在含有C. fintandica和Ch。的进化枝中可能发生了向phialide复杂性增加的逆转。紫菜我们的数据和分析还显示了远距变型和无形态形态之间的先前不可识别的关系，其中较小asci的Mollisia物种将被认为具有Phialocephata状态，而那些较大asci的Mollisia物种将具有Cadophora状态。根据形态学和系统发生的位置，分别将兰科乳酸杆菌和冬眠梭状芽孢杆菌分别转移至Cadophom和Phialocephata。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号