Morphologies and phylogenetic classification of cellulolytic myxobacteria.
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.
State Key Laboratory of Microbial Technology, College of Life Science, Shandong University, Jinan, China.
Zhang-Cai
ZC
Yan
Bing
B
Wang
Yue-Zhong
YZ
Li
Xun
X
Gong
Huai-Qiang
HQ
Zhang
Pei-Ji
PJ
Gao
D002482:Cellulose / Q000378:metabolism; D004269:DNA, Bacterial / Q000235:genetics; D019143:Evolution, Molecular; D009231:Myxococcales / Q000145:classification* / Q000235:genetics / Q000378:metabolism / Q000648:ultrastructure; D010641:Phenotype; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000032:analysis / Q000235:genetics; D017422:Sequence Analysis, DNA
D004269:DNA, Bacterial; D012336:RNA, Ribosomal, 16S; D002482:Cellulose