Morphologies and phylogenetic classification of cellulolytic myxobacteria |
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Authors: | Yan Zhang-Cai Wang Bing Li Yue-Zhong Gong Xun Zhang Huai-Qiang Gao Pei-Ji |
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Affiliation: | State Key Laboratory of Microbial Technology, College of Life Science, Shandong University, Jinan, China. |
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Abstract: | The evolutionary distances of the 16S rDNA sequences in cellulolytic myxobacteria are less than 3%, which units all the strains into a single genus, Sorangium. The size of myxospores and the shape of sporangioles, rather than fruiting body colors or swarm morphologies are consistent with the changes of the 16S rDNA sequences. It is suggested that there are at least two species in the genus Sorangium: one includes strains with small myxospores and spherical sporangioles, and the color of the fruiting bodies is normally orange or brown, though sometimes yellow or black. The second species has large myxospores, polyhedral sporangioles with many inter-cystic substrates, and normally deep brown to black color. |
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