Aestuariimicrobium soli sp. nov., isolated from farmland soil, and emended description of the genus Aestuariimicrobium.

A Gram-reaction-positive, catalase-positive, non-spore-forming and short rod- or oval-shaped bacterial strain, designated D6, was isolated from farmland soil in Xuancheng, Anhui Province, China. Growth occurred at 4-37 °C (optimum, 30 °C), at pH 6.5-8.5 (optimum, 7.0) and with 0-7 % (w/v) NaCl (optimum, 0.5 % NaCl). Phylogenetic analysis based on 16S rRNA gene sequences showed that strain D6 was most closely related to Aestuariimicrobium kwangyangense DSM 21549 (98.47 %), followed by Tessaracoccus rhinocerotis YIM 101269 (94.46 %). Strain D6 had a cell-wall peptidoglycan based on ll-diaminopimelic acid. MK-9(H4) was the predominant menaquinone. The major fatty acids of strain D6 were anteiso-C15 : 0, iso-C15 : 0 and summed feature 4 (iso-C17 : 1 I and/or anteiso-C17 : 1 B). The major polar lipids were a lipid, glycolipid and phospholipid. The DNA G+C content was 69.2 mol% and strain D6 showed low DNA-DNA relatedness to A. kwangyangense DSM 21549 (36.45±0.42 %). Based on these genotypic and phenotypic data, strain D6 represents a novel species in the genus Aestuariimicrobium, for which the name Aestuariimicrobium soli sp. nov. is proposed. The type strain is D6 (=KCTC 39995=DSM 105824). An emended description of the genus Aestuariimicrobium is presented.