Mesorhizobium rhizophilumsp. nov., a 1-aminocyclopropane-1-carboxylate deaminase producing bacterium isolated from rhizosphere of maize in Northeast China
文献类型: 外文期刊
作者: Gao, Jun-lian 1 ; Xue, Jing 1 ; Sun, Yu-chen 1 ; Xue, Han 2 ; Wang, En Tao 3 ; Yan, Hui 4 ; Tong, Shuai 5 ; Wang, Li-wei; 1 ;
作者机构: 1.Beijing Acad Agr & Forestry, Beijing Agrobiotechnol Res Ctr, Beijing Key Lab Agr Genet Resources & Biotechnol, Beijing 100097, Peoples R China
2.Chinese Acad Forestry, Res Inst Forest Ecol Environm & Protect, Key Lab State Forestry Adm Forest Protect, Beijing 100091, Peoples R China
3.Inst Politecn Nacl, Escuela Nacl Ciencias Biol, Dept Microbiol, Mexico City 11340, DF, Mexico
4.Hebei Agr Univ, Coll Anim Sci & Technol, Baoding 071001, Peoples R China
5.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr & Rural Affairs, Key Lab Microbial Resources, Beijing 100081, Peoples R China
关键词: Maize; Mesorhizobium rhizophilumsp; nov; Rhizosphere
期刊名称:ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY ( 2020影响因子:2.271; 五年影响因子:2.707 )
ISSN: 0003-6072
年卷期: 2020 年 113 卷 8 期
收录情况: SCI
摘要: A novel 1-aminocyclopropane-1-carboxylate deaminase producing bacterium, Gram- stain-negative, aerobic, motile, rod-shaped strain designated YM1C-6-2(T)was isolated from rhizosphere of maize grown in Northeast China. The 16S rRNA gene sequence analysis indicated that strain YM1C-6-2(T)belongs to the genusMesorhizobiumand is closely related toMesorhizobium alhagiCCNWXJ12-2(T)andM. camelthorniCCNWXJ40-4(T)with sequence similarities of 98.4% and 97.9%, respectively. Multilocus sequence analysis of other housekeeping genes revealed that the new isolates YM1C-6-2(T)forms a phylogenetically group with some species in the genusMesorhizobium. The genome size of strain YM1C-6-2(T)was 5.51 Mb, comprising 5378 predicted genes with a DNA G+C content of 64.5%. The average nucleotide identity and digital DNA-DNA hybridization comparisons between YM1C-6-2(T)and the most related type strains showed values below the accepted threshold for species discrimination. The major fatty acids of strain YM1C-6-2(T)were C(19:0)cyclo omega 8c (47.5%), summed feature 8 (C-18:1 omega 7c and/or C-18:1 omega 6c) (19.5%) and C-16:0(15.1%), which differed from the closely related reference strains in their relative abundance. The major polar lipids consist of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine and an unidentified aminophospholipid. The predominant ubiquinone was identified as Quinone 10. Phenotypic and biochemical analysis results indicated that strain YM1C-6-2(T)can be distinguished from closely related type strains. Based on the above results, strain YM1C-6-2(T)represents a novel species of the genusMesorhizobium, for which the nameMesorhizobium rhizophilumsp. nov. is proposed with YM1C-6-2(T)(= CGMCC 1.15487(T) = DSM 101712(T)) as the type strain.
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