Abstract
Bai'a. N.L. fem. n. Baia named after Hua Bai, a Chinese microbiologist.
Firmicutes / Bacilli / Bacillales / Thermoactinomycetaceae / Baia
Baia is a genus in the family Thermoactinomycetaceae, order Bacillales, class Bacilli, and phylum Firmicutes. It currently comprises one species Baia soyae. 16S rRNA gene sequence similarity studies showed that B. soyae shared very high similarity to Croceifilum oryzae (99.51%), which is the only described species of the genus Croceifilum. Phylogenetic analysis based on the 16S rRNA gene sequences indicated that the two strains formed a distinct phyletic line. In addition, the morphological and chemotaxonomic properties of C. oryzae resemble those of B. soyae. After further genome level comparisons, C. oryzae could be reclassified to the genus Baia. The genus Baia encompasses bacteria that are aerobic, Gram-stain-positive, mesophilic, and filamentous. Substrate mycelia are well developed, but aerial mycelium is not produced. Single endospores formed on substrate mycelium. Cell walls contain meso-diaminopimelic acid as diamino acid. The only menaquinone is MK-7. Predominant phospholipids are diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, and unidentified aminophospholipids. Major fatty acid is iso-C15:0. Known habitats are soybean root and rice paddy soil. The phylogenetically nearest neighbors are the genera Croceifilum and Geothermomicrobium.
DNA G + C content (mol%): 41.7–49.9 (genome analysis, HPLC and T m).
Type species: Baia soyae Guan, Liu, Fang, Zhao, Jin, Li, Jia, Wang and Xiang 2015, 3758VP.
