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Actinoplanes sandaracinus sp. nov., a novel ligninase- producing and cellulose- degrading actinobacterium isolated from soil

文献类型： 外文期刊

作者： Wang, Zishan 1 ; Xu, Yan 1 ; Zhou, Changjian 1 ; Sun, Xiujun 1 ; Huang, Zhenzhen 1 ; He, Chuan 1 ; Yao, Siqi 1 ; Zhao, Junwei 1 ; Wang, Xiangjing 1 ; Song, Jia 1 ; Xiang, Wensheng 1 ;

作者机构： 1.Northeast Agr Univ, Key Lab Agr Microbiol Heilongjiang Prov, Harbin 150030, Peoples R China

2.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing, Peoples R China

关键词： 16S rRNA gene; genome characterization; novel species; taxonomy

期刊名称：INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY （ 影响因子：2.8； 五年影响因子：2.6 ）

ISSN： 1466-5026

年卷期： 2024 年 74 卷 1 期

页码：

收录情况： SCI

摘要： A novel ligninase- producing and cellulose- degrading actinobacterium, designated strain NEAU- A12T, was isolated from a soil sample collected from Aohan banner, Chifeng City, Inner Mongolia Autonomous Region, PR China. A polyphasic taxonomic study was used to establish the status of strain NEAU- A12T. 16S rRNA gene sequence analysis revealed that strain NEAU- A12T belonged to the genus Actinoplanes and showed the highest similarity (98.3 %) to Actinoplanes palleronii DSM 43940T, while showing less than 98.3 % similarity to other members of the genus Actinoplanes. The phospholipid profile contained diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol and glycosylphosphatidylinositol. The diagnostic sugars in cell hydrolysates were determined to be arabinose, glucose and xylose. The cell wall contained meso- diaminopimelic acid as the diagnostic diamino acid. The predominant menaquinones were MK- 9(H4), MK -9(H6) and MK- 9(H2). The major fatty acids were C15:0, C16:0, C16:1 omega 7c and C17:0. Meanwhile, genomic analysis revealed a genome size of 10 192 524 bp and a DNA G+C content of 70.6 mol%, and indicated that strain NEAU- A12T had the potential to degrade lignin and cellulose, as well as produce bioactive compounds. In addition, the average nucleotide identity values between strain NEAU- A12T and its reference strains A. palleronii DSM 43940T, Actinoplanes regularis DSM 43151T, Actinoplanes philippinensis DSM 43019T, Actinoplanes xinjiangensis DSM 45184T and Actinoplanes italicus DSM 43146T were 80.3, 80.3, 84.1, 84.3 and 84.0 %, respectively. The levels of digital DNA-DNA hybridization between them were found to be 23.6 % (21.3-26.1 %), 23.8 % (21.5-26.3 %), 28.3 % (25.9-30.8 %), 28.6 % (26.0-30.9 %) and 28.4 % (26.2-31.1 %), respectively. Based on phenotypic, chemotaxonomic and genotypic data, strain NEAU- A12T is considered to represent a novel species of the genus Actinoplanes, for which the name Actinoplanes sandaracinus sp. nov. is proposed, with NEAU- A12T (=CCTCC AA 2020039T=DSM 112043T) as the type strain.

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