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KMID : 0880220130510030289
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Journal of Microbiology
2013 Volume.51 No. 3 p.289 ~ p.294
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Lysinibacillus tabacifolii sp. nov., a novel endophytic bacterium isolated from Nicotiana tabacum leaves
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Yan-Qing Duan
Song-Tao He
Ming-Feng Wang
Wen-Yuan Wang
Wei Zhe
Qing-Qing Li
Yong-Hong Cao
Ming-He Mo
Wen-Jun Li
Yu-Long Zhai
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Abstract
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A Gram-positive, catalase- and oxidase-positive, strictly aerobic, endospore-forming rod bacterium, designated K3514T, was isolated from the leaves of Nicotiana tabacum. The strain was able to grow at temperatures of 8?40°C, pH 5.0?10.0 and NaCl concentrations of 0?7%. The predominant quinones (>30%) of this strain were MK-7(H2) and MK-7. Phylogenetic analysis of 16S rRNA gene sequence showed that strain K3514T was affiliated to the genus Lysinibacillus, with its closest relatives being Lysinibacillus mangiferihumi (98.3% sequence similarity), Lysinibacillus sphaericus (97.9% sequence similarity), Lysinibacillus fusiformis (97.4% sequence similarity), and Lysinibacillus xylanilyticus (97.3% sequence similarity). However, low levels of DNA-DNA relatedness values suggested that the isolate was distinct from the other closest Lysinibacillus species. Additionally, based on analysis of morphological, physiological, and biochemical characteristics, the isolate could be differentiated from the closest known relatives. Therefore, based on polyphasic taxonomic data, the novel isolate likely represents a novel species, for which the name Lysinibacillus tabacifolii sp. nov. and the type strain K3514T (=KCTC 33042T =CCTCC AB 2012050T) are proposed.
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KEYWORD
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Lysinibacillus tabacifolii, polyphasic taxonomy, Nicotiana tabacum
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