Agromyces kandeliae sp. nov., isolated from rhizosphere soil of Kandelia candel in a mangrove

Abstract

A novel, Gram-stain-positive, aerobic, non-spore-forming, non-motile and irregular rod-shaped bacterium designated Q22T was isolated from the rhizosphere soil of mangrove plant, Kandelia candel collected in Zhangzhou, Fujian province, China. Strain Q22T was able to grow at 10–40 °C (optimum 30 °C), pH 5.5–9.0 (optimum 7.0–8.0) and with 0–5.0% (w/v) NaCl (optimum 1.0 %). The genomic DNA G+C content was 71.9%. The average nucleotide identity, and in silico DNA–DNA hybridization values between strain Q22T and the reference strains were 79.7–88.9% and 22.6–37.4%, respectively. The predominant isoprenoid quinone was MK-12 and the major fatty acids were anteiso-C15:0, iso-C16:0 and anteiso-C17:0. The major polar lipids of strain Q22T were diphosphatidylglycerol, phosphatidylglycerol, one glycolipid and three unidentified lipids. The strain Q22T contained 2,4-diaminobutyric acid, alanine acid, glutamic acid and glycine in the peptidoglycans. The phylogenetic analysis and genotypic features, along with the phenotypic and chemotaxonomic characteristics, indicate that strain Q22T represents a novel species of the genus Agromyces , for which the name Agromyces kandeliae sp. nov. is proposed. The type strain is Q22T (=MCCC 1K03340T= KCTC 39961T).

Agromyces cavernae sp. nov., a novel member of the genus Agromyces isolated from a karstic cave in Shaoguan

“…Species in the genus Agromyces exist in many habitats through the pedosphere, including forest soils, farm soils, plateau soils, stones and sea sediments [1,2,[6][7][8][9][10][11][12][13][14][15][16]. Additionally, some of the species of the genus Agromyces are found in symbiosis with other organisms, such as rhizospheres [17][18][19][20], gut of larva [21,22] or in the above-ground part of plants [23]. There are also reports on some species of the genus Agromyces taking part in plant xylems natural degradation [24] or sea food fermentation [25].…”