2004--Clostridium straminisolvens sp. nov., a moderately thermophilic, aerotolerant and cellulolytic bacterium isolated from a cellulose-degrading bacterial community

A novel anaerobic, thermophilic and cellulolytic bacterium (strain CSK1T) was isolated from a cellulose-degrading bacterial community. On the basis of 16S rRNA gene sequence similarity, strain CSK1T was mapped to cluster III of the genus Clostridium. Strain CSK1T is closely related to Clostridium thermocellum (96.2%) and Clostridium aldrichii (95.1%). Strain CSK1T is a non-motile, spore-forming, straight or slightly curved rod. The optimum temperature and initial pH for its growth and cellulose degradation are 50–55 ℃ and pH 7.5. Strain CSK1T grew under a gas phase containing up to 4% O₂. Phylogenetic and phenotypic analyses support the differentiation of strain CSK1T from its closest relatives. Strain CSK1T therefore represents a novel species, for which the name Clostridium straminisolvens sp. nov. is proposed, withCSK1T (=DSM 16021T=IAM 15070T) as the type strain.

2004--Clostridium straminisolvens sp.nov.，一种从纤维素降解菌群中分离的中度嗜热、耐氧、纤维素分解菌

从纤维素降解菌群中分离到一株新型厌氧、嗜热和纤维素分解菌（CSK1T）。在16s rRNA基因序列相似性的基础上，将CSK1T菌株定位于梭状芽孢杆菌属的III群。CSK1T菌株与热梭菌（96.2%）和阿尔德里奇梭菌（95.1%）关系密切。

菌株CSK1T是一个无运动，孢子形成，直或稍弯曲的杆菌。其生长和纤维素降解的最适温度为50-55℃，最适初始pH值为7.5。菌株CSK1T可生长在氧气含量高达4%的气相下。系统发育和表型分析支持菌株CSK1T与其近亲的分化。因此，菌株CSK1T代表了一个新的物种，为此提出了命名为Clostridium straminisolvens sp.nov.的菌株CSK1T（=DSM 16021T=IAM 15070T）。