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RISS 인기검색어
- 검색키워드
- 저자 : Madhaiyan, Munusamy (검색결과 119 건)
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Leifsonia soli sp. nov., a yellow-pigmented actinobacterium isolated from teak rhizosphere soil
Madhaiyan, Munusamy,Poonguzhali, Selvaraj,Lee, Jung-Sook,Senthilkumar, Murugaiyan,Lee, Keun Chul,Sundaram, Subbiah Microbiology Society 2010 International journal of systematic and evolutiona Vol.60 No.6
<P>Two yellow-pigmented, Gram-stain-positive, aerobic, motile, short rod-shaped bacteria were isolated from natural teak tree rhizosphere soil and their taxonomic positions were determined by using a polyphasic approach. Comparative 16S rRNA gene sequence analysis showed that strains TG-S248<SUP>T</SUP> and TG-S240 formed a distinct phyletic line within the genus <I>Leifsonia</I>. 16S rRNA gene sequence analysis of strain TG-S248<SUP>T</SUP> with sequences from <I>Leifsonia shinshuensis</I> DB 102<SUP>T</SUP>, <I>L. poae</I> VKM Ac-1401<SUP>T</SUP>, <I>L. naganoensis</I> DB 103<SUP>T</SUP>, <I>L. aquatica</I> DSM 20146<SUP>T</SUP> and <I>L. xyli</I> subsp. <I>cynodontis</I> JCM 9733<SUP>T</SUP> revealed pairwise similarities ranging from 98.7 to 99.1 %. The major fatty acids were anteiso-C15 : 0, anteiso-C17 : 0 and iso-C16 : 0. The G+C content of the DNA of the type strain was 69.4 mol%. DNA-DNA hybridization experiments revealed low levels of DNA-DNA relatedness (32 % or less) between strain TG-S248<SUP>T</SUP> and its closest relatives. Based on differences in phenotypic and genotypic characteristics, strain TG-S248<SUP>T</SUP> (=LMG 24767<SUP>T</SUP> =JCM 15679<SUP>T</SUP>) is designated the type strain of a novel species of the genus <I>Leifsonia</I>, for which the name <I>Leifsonia soli</I> sp. nov. is proposed.</P>
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Madhaiyan, Munusamy,Kim, Byung-Yong,Poonguzhali, Selvaraj,Kwon, Soon-Wo,Song, Myung-Hee,Ryu, Jeoung-Hyun,Go, Seung-Joo,Koo, Bon-Sung,Sa, Tong-Min Microbiology Society 2007 International journal of systematic and evolutiona Vol.57 No.2
<P>A pink-pigmented, facultatively methylotrophic bacterium, strain CBMB20T, isolated from stem tissues of rice, was analysed by a polyphasic approach. Strain CBMB20T utilized 1-aminocyclopropane 1-carboxylate (ACC) as a nitrogen source and produced ACC deaminase. It was related phylogenetically to members of the genus Methylobacterium. 16S rRNA gene sequence analysis indicated that strain CBMB20T was most closely related to Methylobacterium fujisawaense, Methylobacterium radiotolerans and Methylobacterium mesophilicum; however, DNA-DNA hybridization values were less than 70 % with the type strains of these species. The DNA G+C content of strain CBMB20T was 70.6 mol%. The study presents a detailed phenotypic characterization of strain CBMB20T that allows its differentiation from other Methylobacterium species. In addition, strain CBMB20T is the only known member of the genus Methylobacterium to be described from the phyllosphere of rice. Based on the data presented, strain CBMB20T represents a novel species in the genus Methylobacterium, for which the name Methylobacterium oryzae sp. nov. is proposed, with strain CBMB20T (=DSM 18207T=LMG 23582T=KACC 11585T) as the type strain.</P>
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Madhaiyan, M,Poonguzhali, S,Senthilkumar, M,Pragatheswari, D,Lee, K-C,Lee, J-S N.V. Swets en Zeitlinger 2013 Antonie van Leeuwenhoek Vol.103 No.3
<P>A novel plant-associated obligate methylotrophic bacterium, designated strain Ca-68(T), was isolated from the rhizosphere soil of field-grown red pepper from India. The isolates are strictly aerobic, Gram negative, motile rods multiplying by binary fission and formaldehyde is assimilated via the ribulose monophosphate pathway. A comparative 16S rRNA gene sequence-based phylogenetic analysis placed the strain in a clade with the species Methylobacillus flagellatus, Methylobacillus glycogens and Methylobacillus pratensis, with which it showed pairwise similarity of 97.8, 97.4 and 96.2 %, respectively. The major fatty acids are C(16:0), C(10:0) 3OH and C(16:1) ω7c. The G+C content of the genomic DNA is 59.7 mol%. The major ubiquinone is Q-8. Dominant phospholipids are phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. Based on 16S rRNA gene sequence analysis and DNA-DNA relatedness (14-19 %) with type strains of the genus Methylobacillus, the novel isolate was classified as a new species of this genus and named Methylobacillus rhizosphaerae Ca-68(T) (=KCTC 22383(T) = NCIMB 14472(T)).</P>
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Madhaiyan, Munusamy,Selvaraj Poonguzhali,Soon-Wo Kwon,Myung-Hee Song,사동민 한국미생물·생명공학회 2008 Journal of microbiology and biotechnology Vol.18 No.6
The genus Burkholderia consists of extremely versatile bacteria that occupy diverse niches and are commonly encountered in the rhizosphere of crop plants. In this study, we characterized three plant growth promoting strains assigned as Burkholderia sp. using biochemical and molecular characterization. The Burkholderia spp. strains CBMB40, CBPB-HIM, and CBPB-HOD were characterized using biochemical tests, BIOLOG carbon substrate utilization, fatty acid methyl ester analysis, analysis of recA gene sequences, and DNA-DNA hybridization. The results from these studies indicated that the strains CBMB40, CBPBHIM, and CBPB-HOD can be assigned under Burkholderia vietnamiensis, Burkholderia ubonensis, and Burkholderia pyrrocinia, respectively.
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Madhaiyan, Munusamy,Poonguzhali, Selvaraj,Lee, Jung-Sook,Lee, Keun-Chul,Saravanan, Venkatakrishnan Sivaraj,Santhanakrishnan, Palani Microbiology Society 2010 International journal of systematic and evolutiona Vol.60 No.7
<P><I>Microbacterium</I> strain AI-S262<SUP>T</SUP> was isolated from the rhizoplane of neem seedlings in the Botanical garden of Tamilnadu Agricultural University, Coimbatore, India, and subjected to phenotypic, chemotaxonomic and genetic characterization. Cells of this strain were Gram-stain-positive, motile, non-spore-forming, short rods and formed light-yellow-pigmented colonies on nutrient agar. Strain AI-S262<SUP>T</SUP> contained MK-12 and MK-13 as the main respiratory quinones, anteiso-C15 : 0, anteiso-C17 : 0 and iso-C16 : 0 as the predominant fatty acids, peptidoglycan-type B2<I>β</I> with glycolyl residues, and had a DNA G+C content of 69.5 mol%. A phylogenetic analysis based on 16S rRNA gene sequences showed 98.0-98.6 % pair-wise similarity with respect to close relatives in the genus <I>Microbacterium</I>. DNA-DNA hybridization experiments revealed a low level of DNA-DNA relatedness (less than 39%) between strain AI-S262<SUP>T</SUP> and its closest relatives. Data from DNA-DNA hybridization and phenotypic analyses supported the conclusion that strain AI-S262<SUP>T</SUP> represents a novel species in the genus <I>Microbacterium</I>, for which the name <I>Microbacterium azadirachtae</I> sp. nov. is proposed. The type strain is AI-S262<SUP>T</SUP> (=JCM 15681<SUP>T</SUP> =LMG 24772<SUP>T</SUP> =KCTC 19668<SUP>T</SUP>).</P>
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Madhaiyan, Munusamy,Poonguzhali, Selvaraj,Lee, Jung-Sook,Lee, Keun Chul,Sundaram, Subbiah Microbiology Society 2010 International journal of systematic and evolutiona Vol.60 No.9
<P>An aerobic, yellow-pigmented, facultatively methylotrophic, Gram-staining-negative, non-spore-forming bacterium, designated strain Gm-149<SUP>T</SUP>, was isolated from the rhizosphere of cultivated soybean in India. Cells were motile by gliding. The predominant cellular fatty acids were iso-C15 : 0, summed feature 3 (comprising iso-C15 : 0 2-OH and/or C16 : 1<I>ω</I>7<I>c</I>), C16 : 0 3-OH and anteiso-C15 : 0, and the major isoprenoid quinone was MK-6. The G+C content of the genomic DNA of strain Gm-149<SUP>T</SUP> was 35.6 mol%. Comparative 16S rRNA gene sequence analysis showed that strain Gm-149<SUP>T</SUP> formed a distinct phyletic line within the genus <I>Flavobacterium</I>. Based on levels of pairwise 16S rRNA gene sequence similarity, strain Gm-149<SUP>T</SUP> was related most closely to the type strain of <I>Flavobacterium daejeonense</I> (97.1 %), but the level of DNA-DNA relatedness between these two strains was about 11.2 %. On the basis of phenotypic and genotypic data, strain Gm-149<SUP>T</SUP> is considered to represent a novel species of the genus <I>Flavobacterium</I>, for which the name <I>Flavobacterium glycines</I> sp. nov. is proposed. The type strain is Gm-149<SUP>T</SUP> (=ICMP 17618<SUP>T</SUP>=NBRC 105008<SUP>T</SUP>).</P>
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Madhaiyan, Munusamy,Poonguzhali, Selvaraj,Lee, Jung-Sook,Saravanan, Venkatakrishnan Sivaraj,Lee, Keun-Chul,Santhanakrishnan, Palani Microbiology Society 2010 International journal of systematic and evolutiona Vol.60 No.7
<P>A methylotrophic nitrogen-fixing bacterial strain, Ah-143<SUP>T</SUP>, isolated from the rhizosphere soil of field-grown groundnut was analysed by a polyphasic taxonomic approach. Comparative 16S rRNA gene sequence analysis combined with <I>rpoB</I> gene sequence analysis allocated strain Ah-143<SUP>T</SUP> to the family <I>Enterobacteriaceae</I>, with <I>Enterobacter radicincitans</I> and <I>Enterobacter cowanii</I> as the closest relatives. The strain is Gram-stain-negative, non-spore-forming, aerobic and motile, having straight rod-shaped cells with a DNA G<I>+</I>C content of approximately 53.2 mol%. The strain utilizes methanol as a carbon source and the <I>mxaF</I> gene was closely related to the <I>mxaF</I> gene of members of the genus <I>Methylobacterium</I>. The fatty acid profile consisted of C16 : 0, C17 : 0 cyclo, C18 : 1<I>ω</I>7<I>c</I>, summed feature 2 (iso-C16 : 1 I and/or C14 : 0 3-OH) and summed feature 3 (iso-C15 : 0 2-OH and/or C16 : 1<I>ω</I>7<I>c</I>) as the major components. DNA-DNA relatedness of strain Ah-143<SUP>T</SUP> with its close relatives was less than 20 %. On the basis of the phylogenetic analyses, DNA-DNA hybridization data, and unique physiological and biochemical characteristics, it is proposed that the strain represents a novel species of the genus <I>Enterobacter</I> and should be named <I>Enterobacter arachidis</I> sp. nov. The type strain is Ah-143<SUP>T</SUP> (=NCIMB 14469<SUP>T</SUP> =KCTC 22375<SUP>T</SUP>).</P>
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