Circinella simplex— a misapplied name of Mucor circinatus sp. nov.
Circinella simplex— a misapplied name of Mucor circinatus sp. nov.
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DOI：
10.11646/phytotaxa.329.3.8
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发表时间：
2017-12
期刊：
影响因子：
1.1
通讯作者：
D. Lima;C. Souza-Motta;Lysett Wagner;K. Voigt;C. D. Souza;R. D. Oliveira;G. Silva;A. Santiago;G. Walther
中科院分区：
文献类型：
--
作者：
D. Lima;C. Souza-Motta;Lysett Wagner;K. Voigt;C. D. Souza;R. D. Oliveira;G. Silva;A. Santiago;G. Walther
Circinella（毛霉目，毛霉菌亚门）在形态上与毛霉菌相似，不同之处在于产生环状孢子梗和具有持久且结痂的孢子囊壁的孢子囊。在对巴西大西洋雨林地区毛霉目多样性的研究中，我们通过形成具有次生分枝和角状孢子孢子的简单环状孢子梗，分离出了符合当前 Hesseltine 和 Fennell (1955) 的毛霉目形态学概念的菌株。基于三个不同标记（ITS、LSU 和 MCM7）的分子系统发育分析证实了巴西菌株与 CBS 收藏中的其他有角孢子菌株的同源性，包括 Hesseltine 和 Fennell (1955) 研究的菌株。分子系统发育分析清楚地表明这些菌株属于毛霉属，与毛根毛霉和毛毛霉有密切的关系。然而，在 van Tieghem (1875) 的原始描述中，描述并说明了 C. simplex 具有不具有次生分枝的孢子梗和球形孢子囊孢子。基于这些显着的形态差异以及不同的地理分布，我们得出结论，有角孢子菌株代表了一个单独的未描述的物种，我们建议将其命名为毛霉（Mucor circinatus sp）。十一月
Circinella (Mucorales, Mucoromycotina) is morphologically similar to Mucor , differing by the production of circinate sporangiophores and sporangia with a persistent and incrusted sporangial wall. During a study on the diversity of Mucorales in areas of the Atlantic Rainforest in Brazil, we isolated a strain that fits the current morphological concept of C. simplex of Hesseltine and Fennell (1955) by forming simple circinate sporangiophores with secondary branches and angular sporangiospores. Molecular phylogenetic analyses based on three different markers (ITS, LSU and MCM7) confirmed conspecificity of the Brazilian strain with other angular spored strains of the CBS collection including the strain studied by Hesseltine & Fennell (1955). The molecular phylogenetic analyses clearly placed these strains in the genus Mucor in the close relationship to M. laxorrhizus and M. fuscus . However, in his original description van Tieghem (1875) described and illustrated C. simplex with sporangiophores without secondary branches and globose sporangiospores. Based on these striking morphological differences combined with a differing geographic distribution, we conclude that the angular-spored strains represent a separate undescribed species for which we propose the name Mucor circinatus sp. nov .