Pseudotripoconidium, a new anamorph genus connected to Orbilia

Pseudotripoconidium, a new anamorph genus connected to Orbilia
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Pseudotripoconidium,一个与 Orbilia 有关的新无性型属

DOI:
10.3852/10-102
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发表时间:
2011-01
期刊:
影响因子:
2.8
通讯作者:
Zhang, Ke-Qin
Zhang, Ke-Qin
中科院分区:
生物学3区
文献类型:
--
作者:
Yu, Ze-Fen;Qiao, Min;Zhang, Ying;Qin, Li;Zhang, Ke-Qin

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从玉米子囊孢子中分离到4个菌株,经鉴定为一种新的变态真菌。布鲁氏菌。这种真菌与已知的Orbilia无性型真菌不同,它产生倒金字塔形的单细胞分生孢子,在其远端有几个突起。分生孢子产生1-7个突出的小齿,这些小齿从分生孢子柄顶端的一个节上长出。分生孢子发生是全胚层的。由于系统发育分析表明,四个分离物之间的ITS序列相似性超过90%,因此它们在这里被视为一个单一物种。在内部转录间隔区(ITS)的序列分析中,这些分离物和其他序列被鉴定为O.aff。黄褐斑杆菌嵌套在Orbilia内,并形成一个99%的自举支持率的分支。这个分支是从Orbilia的捕食线虫的物种中分离出来的。在形态和分子分析的基础上,我们提出了一个新属--假三分孢子属。
A new anamorphic fungus is described based on four isolates from ascospores of Orbilia aff. luteorubella. This fungus differs from previously known Orbilia anamorphs in producing inversely pyramidal, unicellular conidia with several protuberances at their distal end. Conidia produce 1–7 prominent denticles that emerge from a node at the conidiophore apex. Conidiogenesis is holoblastic. Because phylogenetic analysis indicated greater than 90% ITS sequence similarities among the four isolates they are treated here as a single species. In the sequence analysis of the internal transcribed spacer region (ITS) these isolates and other sequences identified as O. aff. luteorubella were nested within Orbilia and formed a clade with 99% bootstrap support. This clade is separated from nematode-trapping species of Orbilia. Based on both morphological and molecular analyses, we propose a new genus, Pseudotripoconidium.
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发表时间: 1994-05
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