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Arthrobacter wenxiniae sp. nov., a novel plant growth-promoting rhizobacteria species harbouring a carotenoids biosynthetic gene cluster

文献类型： 外文期刊

作者： Sun, Yu-chen 1 ; Sun, Pengbo 3 ; Xue, Jing 1 ; Du, Yunpeng 1 ; Yan, Hui 5 ; Wang, Li-wei 1 ; Yi, Xin-xin 2 ; Sun, Jian-guang 6 ; Zhang, Xiuhai 1 ; Gao, Jun-lian 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Grassland Flowers & Ecol, Beijing 100097, Peoples R China

2.Beijing Univ Agr, Coll Food Sci & Engn, Beijing 102206, Peoples R China

3.German Canc Res Ctr, Div Pediat Neurooncol, D-69120 Heidelberg, Germany

4.German Canc Res Ctr, German Canc Consortium DKTK, D-69120 Heidelberg, Germany

5.Hebei Agr Univ, Coll Anim Sci & Technol, Baoding 071001, Peoples R China

6.Chinese Acad Agr Sci, Key Lab Microbial Resources, Minist Agr, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

关键词： Arthrobacter wenxiniae; Rhizosphere of lily; Plant growth-promoting characters; Genome sequencing; Polyphasic taxonomy

期刊名称：ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY （ 影响因子：2.158； 五年影响因子：2.745 ）

ISSN： 0003-6072

年卷期： 2022 年 115 卷 3 期

页码：

收录情况： SCI

摘要： A bacterial strain, designated AETb3-4(T) was isolated from the rhizosphere of lily. Comparison of 16S rRNA gene sequences showed that the sequence from strain AETb3-4(T) exhibits high sequence similarity with those of Arthrobacter silviterrae KIS14-16(T) (97.9%), Arthrobacter livingstonensis LI2(T) (97.2%) and Arthrobacter stackebrandtii CCM 2783(T) (97.0%). Whole genome average nucleotide identity (ANI) and the digital DNA-DNA hybridization (dDDH) values between strain AETb3-4T and the reference strains A. silviterrae DSM 27180(T), A. livingstonensis L12(T) and A. stackebrandtii DSM 16005(T) were below 83.6% and 27.7%, respectively, values which are considerably below the proposed thresholds for the species delineation, consistent with the proposal that strain AETb3-4(T) represents a novel species. The genome size of strain AETb3-4(T) is 4.33 Mb and the genomic DNA G + C content is 67.3%. The main polar lipids were identified as phosphatidylglycerol, diphosphatidylglycero, phosphatidylinositol and an unidentified glycolipid. The major fatty acids (> 10%) were identified as anteiso-C-15: 0 and anteiso-C-17: 0. The predominant menaquinone was found to be menaquinone 9 (MK-9) (H-2) (82.2%). Phenotypic tests allowed the strain to be differentiated from its close phylogenetic neighbors. Based on the results obtained, it is proposed that the strain AETb3-4(T) (= CFCC 16390(T) = LMG 31708(T)) represents a novel species in the genus Arthrobacter, for which the names Arthrobacter wenxiniae sp. nov. is proposed. In addition, the novel strain AETb3-4(T) has multiple plant growth-promoting characters including ACC-deaminase activity and production of IAA. Furthermore, the genome contains secondary metabolite biosynthesis gene clusters, including a carotenoid biosynthetic gene cluster, suggesting potential capacities for secondary metabolite synthesis. These data suggest that strain AETb3-4(T) may have potential applications both in medicine and sustainable agriculture.

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[1]Arthrobacter wenxiniae sp. nov., a novel plant growth-promoting rhizobacteria species harbouring a carotenoids biosynthetic gene cluster. Sun, Yu-chen,Xue, Jing,Du, Yunpeng,Wang, Li-wei,Zhang, Xiuhai,Gao, Jun-lian,Sun, Yu-chen,Yi, Xin-xin,Sun, Pengbo,Sun, Pengbo,Yan, Hui,Sun, Jian-guang. 2022

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