Phenotypic and phylogenetic analysis of lactic acid bacteria isolated from forage crops and grasses in the Tibetan Plateau
文献类型： 外文期刊
作者： Pang, Huili 1 ; Tan, Zhongfang 1 ; Qin, Guangyong 1 ; Wang, Yanping 1 ; Li, Zongwei 1 ; Jin, Qingsheng 2 ; Cai, Yimin 3 ;
作者机构： 1.Zhengzhou Univ, Henan Prov Key Lab Ion Beam Bioengn, Zhengzhou 450052, Henan, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Crops & Utilizat Nucl Technol, Hangzhou 310021, Zhejiang, Peoples R China
3.Japan Int Res Ctr Agr Sci, Tsukuba, Ibaraki 3058686, Japan
关键词： 16S rDNA;epiphytic microflora;forage;lactic acid bacteria;recA gene
期刊名称：JOURNAL OF MICROBIOLOGY （ 影响因子：3.422； 五年影响因子：3.28 ）
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收录情况： SCI
摘要： A total of 140 lactic acid bacteria (LAB) strains were isolated from corn, alfalfa, clover, sainfoin, and Indian goosegrass in the Tibetan Plateau. According to phenotypic and chemotaxonomic characteristics, 16S rDNA sequence, and recA gene PCR amplification, these LAB isolates were identified as belonging to five genera and nine species. Corn contained more LAB species than other forage crops. Leuconostoc pseudomesenteroides, Lactococcus lactis subsp. lactis, Lactobacillus brevis, and Weissella paramesenteroides were dominant members of the LAB population on alfalfa, clover, sainfoin, and Indian goosegrass, respectively. The comprehensive 16S rDNA and recA-based approach effectively described the LAB community structure of the relatively abundant LAB species distributed on different forage crops. This is the first report describing the diversity and natural populations of LAB associated with Tibetan forage crops, and most isolates grow well at or below 10°C. The results will be valuable for the future design of appropriate inoculants for silage fermentation in this very cold area.
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