Abstract
Two Gram-staining-negative, strictly aerobic, rod-shaped bacteria, designated strains AVA-1T and AVA-2, were isolated from the root of Aloe vera (L.) Brum.f. derived from Chachoengsao Province, Thailand. The strains contained cytochrome oxidase and catalase activities. They grew in 4 % (w/v) NaCl, at a pH range of 6.0-9.0 (optimally at pH 7) and at 20-42 °C (optimally at 30-37 °C). The major isoprenoid quinone was ubiquinone with eight isoprene units (Q-8). The major fatty acids were C16 : 0 and C17 : 0 cyclo. On the basis of 16S rRNA gene sequence analysis, the strains represent a species belonging to the genus Achromobacter and are closely related to Achromobacter xylosoxidans NBRC 15126T (98.80 %), Achromobacter insolitus LMG 6003T (98.64 %), Achromobacter aminicus LMG 26690T (98.59 %), Achromobacter pulmonis LMG 26696T (98.58 %) and Achromobacter insuavis LMG 26845T (98.58 %). The DNA G+C content of strain AVA-1T was 66.5 mol%. The novel strains had low DNA-DNA relatedness values with related type strains. On the basis of the phenotypic and genotypic data obtained, the strains clearly represent a novel species, for which the name Achromobacter aloeverae sp. nov. is proposed. The type strain is strain AVA-1T (=LMG 29108T=NBRC 111463T=PCU 352T=TISTR 2383T).
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