How important are conidial appendages?
How important are conidial appendages?
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DOI：
10.3767/003158512x652624
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发表时间：
2012-06
期刊：
影响因子：
9.1
通讯作者：
Groenewald JZ
中科院分区：
文献类型：
--
作者：
Crous PW;Verkley GJ;Christensen M;Castañeda-Ruiz RF;Groenewald JZ
本文以双孢霉属为例，探讨了分生孢子附属物在腔肠真菌属级分类中的重要性。根据形态学和核核糖体大亚基RNA基因（LSU，28 S）、nrDNA操纵子的内转录间隔区和5.8SrRNA基因的序列数据，将Dinemasporium属进行了外切，并将Dinemasporium命名为Dinemasporium表型。strigosum，该属的模式。在Dinemasporium中又引入了5个种，即D. pseudostrigosum（分离自小麦（Triticum aestivum），德国和古巴的Stigmaphyllon sagraeanum）; americana（soil，USA），D. pyrgonum（Polygonum sachalinense，Netherlands），D. pseudoindicum（soil，USA），和D.病态（人痰，荷兰和野兔粪，新西兰）。Brunneodinemasporium，基于B. brasiliense，引入以容纳具有紧密聚集的棕色产分生孢子细胞和浅棕色分生孢子的双孢霉样物种。Dendrophoma（= Amphitiarospora）恢复为与Dinemasporium不同，并且是D. cytisporoides，其特征是其表面，具柄到杯状分生孢子，和小分生孢子，具有两个极性，管状，外源附属物。Stauronema在Dinemasporium下被简化为同义词。支持Pseudolachnea（1-分隔分生孢子）与Dinemasporium（无分隔分生孢子）不同，并将P. fraxini作为一个新物种引入。该属复合体的分类群在分生孢子、刚毛、分生孢子和附属物的形态特征组合上存在差异。在属的层次上，仅以语言形态学作为信息而被拒绝。
The genus The genus Dinemasporium is used as a case study to evaluate the importance of conidial appendages for generic level classification of coelomycetous fungi. Based on morphology and sequence data of the large subunit nuclear ribosomal RNA gene (LSU, 28S) and the internal transcribed spacers and 5.8S rRNA gene of the nrDNA operon, the genus Dinemasporium is circumscribed, and an epitype designated for D. strigosum, the type of the genus. A further five species are introduced in Dinemasporium, namely D. pseudostrigosum (isolated from Triticum aestivum, Germany and Stigmaphyllon sagraeanum, Cuba), D. americana (soil, USA), D. polygonum (Polygonum sachalinense, Netherlands), D. pseudoindicum (soil, USA), and D. morbidum (human sputum, Netherlands and hare dung, New Zealand). Brunneodinemasporium, based on B. brasiliense, is introduced to accommodate Dinemasporium-like species with tightly aggregated brown conidiogenous cells, and pale brown conidia. Dendrophoma (= Amphitiarospora) is reinstated as distinct from Dinemasporium, and an epitype designated for D. cytisporoides, characterised by its superficial, stipitate to cupulate conidiomata, and small conidia with two polar, tubular, exogenous appendages. The genus Stauronema is reduced to synonymy under Dinemasporium. Pseudolachnea (1-septate conidia) is supported as distinct from Dinemasporium (aseptate conidia), and P. fraxini introduced as a novel species. Taxa in this generic complex differ by combination of morphological characters of conidiomata, setae, conidia and appendages. Appendage morphology alone is rejected as informative at the generic level.