title: Gluconacetobacter hansenii subsp. nov., a high-yield bacterial cellulose producing strain induced by high hydrostatic pressure.
abstract: Strain M(438), deposited as CGMCC3917 and isolated from inoculums of bacterial cellulose (BC) producing strain screened in homemade vinegar and then induced by high hydrostatic pressure treatment (HHP), has strong ability to produce BC more than three times as that of its initial strain. It is the highest yield BC-producing strain ever reported. In this paper, M(438) was identidied as Gluconacetobacter hansenii subsp. nov. on the basis of the results obtained by examining it phylogenetically, phenotypically, and physiologically-biochemically. Furthermore, the genetic diversity of strain M(438) and its initial strain was examined by amplified fragment length polymorphism. The results indicated that strain M(438) was a deletion mutant induced by HHP, and the only deleted sequence showed 99% identity with 24,917-24,723 bp in the genome sequence of Ga. hansenii ATCC23769, and the complement gene sequence was at 24,699-25,019 bp with local tag GXY_15142, which codes small multidrug resistance (SMR) protein. It can be inferred that SMR might be related to inhibiting BC production to a certain extent.
authors.affiliation: College of Food Science and Engineering, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A&F University, No. 28 Xinong Road, Yangling, Xi'an, Shaanxi 712100, China.
authors.forename: Han-Jing
authors.initials: HJ
authors.lastname: Ge
authors.forename: Shuang-Kui
authors.initials: SK
authors.lastname: Du
authors.forename: De-Hui
authors.initials: DH
authors.lastname: Lin
authors.forename: Jun-Na
authors.initials: JN
authors.lastname: Zhang
authors.forename: Jin-Le
authors.initials: JL
authors.lastname: Xiang
authors.forename: Zhi-Xi
authors.initials: ZX
authors.lastname: Li
mesh_terms: D000595:Amino Acid Sequence; D054458:Amplified Fragment Length Polymorphism Analysis; D001426:Bacterial Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D002482:Cellulose / Q000096:biosynthesis*; D041821:Gluconacetobacter / Q000737:chemistry* / Q000145:classification / Q000235:genetics / Q000378:metabolism*; D006874:Hydrostatic Pressure; D008969:Molecular Sequence Data; D010802:Phylogeny; D016415:Sequence Alignment
chemical_list: D001426:Bacterial Proteins; D002482:Cellulose