Sharma Rahul, Rajak Ram C, Pandey Akhilesh K, Gräser Yvonne
Mycological Research Laboratory, Department of Biological Sciences, Rani Durgavati University, Jabalpur 482001, MP, India.
Antonie Van Leeuwenhoek. 2006 Jan;89(1):197-202. doi: 10.1007/s10482-005-9018-x. Epub 2006 Mar 7.
Recently a new taxon of geophilic dermatophytes was established as Microsporum appendiculatum Bhat and Mariam, based on the presence of appendaged macroconidia. However, such appendages are already known in the related species Microsporum gypseum. We conducted a survey of soil in central India as a part of a microbial biodiversity project and obtained two strains of M. gypseum with appendaged macroconidia. Using phenotypical characterization in combination with sequencing and restriction fragment length polymorphism (RFLP) of the Internal Transcribed Spacer (ITS) region of rDNA, we found that all strains of appendaged species are identical. Therefore M. appendiculatum is regarded as a synonym of M. gypseum.
最近，基于具附属物的大分生孢子的存在，一种新的嗜土皮肤癣菌分类群被确立为附肢小孢子菌（Microsporum appendiculatum）Bhat和Mariam。然而，在相关物种石膏样小孢子菌（Microsporum gypseum）中已经知道有这样的附属物。作为微生物多样性项目的一部分，我们对印度中部的土壤进行了调查，获得了两株具附属物大分生孢子的石膏样小孢子菌。通过将表型特征与核糖体DNA内部转录间隔区（ITS）的测序和限制性片段长度多态性（RFLP）相结合，我们发现所有具附属物物种的菌株都是相同的。因此，附肢小孢子菌被视为石膏样小孢子菌的同义词。
