DMIPP, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil.
J Basic Microbiol. 2013 Mar;53(3):251-9. doi: 10.1002/jobm.201100482. Epub 2012 Jun 26.
The biodiversity of entomopathogenic fungi in tropical ecosystems is still little investigated, and the objective of this study was to isolate and identify fungi of the entomopathogenic genus Metarhizium (Hypocreales: Clavicipitaceae) present in undisturbed soils of the Central Brazilian Cerrado. A total of 107 Metarhizium isolates was obtained from soils collected from Cerrado sites in the state of Goiás; gene sequences from 63 of these were obtained and compared. Among these, one was confirmed to be M. anisopliae sensu stricto; 53 were very closely allied to M. anisopliae but require more extensive genetic characterization to determine if they might represent a new taxon in the M. anisopliae species complex. Eight of these Cerrado isolates were referable to M. robertsii, and the remaining isolate is the first South American (and Southern Hemisphere) collection of M. flavoviride var. pemphigi. These findings underline the need for better characterization of the diversity of these widely distributed fungi in Brazil.
在热带生态系统中，昆虫病原真菌的生物多样性仍然很少被研究，本研究的目的是从巴西中部塞拉多未受干扰的土壤中分离和鉴定存在的昆虫病原属绿僵菌（Hypocreales：Clavicipitaceae）中的真菌。从戈亚斯州的塞拉多地区采集的土壤中获得了总共 107 种绿僵菌分离物；从其中的 63 种获得了基因序列并进行了比较。其中，一种被确认为严格意义上的绿僵菌 M. anisopliae；53 种与绿僵菌 M. anisopliae 非常密切相关，但需要更广泛的遗传特征来确定它们是否可能代表绿僵菌种复合体中的一个新分类群。这些塞拉多分离物中有 8 种可归于绿僵菌 M. robertsii，其余的分离物是第一个来自南美的（南半球）绿僵菌 M. flavoviride var. pemphigi 的收集。这些发现强调了需要更好地描述巴西这些广泛分布的真菌的多样性。
