文献类型： 外文期刊
作者： Gao, Jun-lian 1 ; Sun, Pengbo 2 ; Wang, Xu-ming 1 ; Cheng, Shoutao 1 ; Lv, Fanyang 3 ; Qiu, Tian-lei 1 ; Yuan, Mei 3 ; Su 1 ;
作者机构： 1.Beijing Acad Agr & Forestry, Beijing Municipal Key Lab Agr Gene Resources & Bi, Beijing Agrobiotechnol Res Ctr, Beijing 100097, Peoples R China
2.Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China
3.Chinese Acad Agr Sci, Minist Agr, Key Lab Microbial Resources, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China
4.Chinese Acad Agr Sci, Minist Agr, Key Lab Microbial Resources, Inst Ag
期刊名称：INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY （ 影响因子：2.747； 五年影响因子：2.889 ）
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收录情况： SCI
摘要： A novel Gram-staining-negative, aerobic and rod-shaped strain designated 541(T) was isolated from surface-sterilized root tissue of maize, collected from the Fangshan District of Beijing, People's Republic of China, and was subjected to a taxonomic study using a polyphasic approach. According to a phylogenetic tree based on 16S rRNA gene sequences, strain 541(T) represented a member of the genus Sphingomonas and clustered with Sphingomonas sanxanigenens DSM 19645(T), with which it shared the highest 16S rRNA gene sequence similarity (98.8 %). The predominant respiratory quinone was ubiquinone-10 (Q-10), the major polyamine was sym-homospermidine and the major cellular fatty acids were C-18 : 1 omega 7c (50.9 %), C-16 : 0 (22.0 %) and C-14 : 0 2-OH (11.4 %). The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylcholine and sphingoglycolipid. The DNA G+C content was 64.7 mol%. DNA-DNA relatedness between strain 541(T) and its closest phylogenetic relative Sphingomonas sanxanigenens DSM 19645(T) was 50.8 %. The results of physiological and biochemical tests and the differences in the fatty acid profiles allowed a clear phenotypic differentiation of strain 541(T) from closely related species of the genus Sphingomonas. Strain 541(T) represents a novel species within the genus Sphingomonas, for which the name Sphingomonas zeicaulis sp. nov. is proposed, with the type strain 541(T) (=CGMCC 1.15008(T)=DSM 100587(T)).
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