S W A Naqvi

Publications (3)6.34 Total impact

• Article: Cecembia lonarensis gen. nov., sp. nov., a haloalkalitolerant bacterium of the family Cyclobacteriaceae, isolated from a haloalkaline lake and emended descriptions of the genera Indibacter, Nitritalea and Belliella.

  P Anil Kumar, T N R Srinivas, S Madhu, R Sravan, Shashi Singh, S W A Naqvi, S Mayilraj, S Shivaji
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  ABSTRACT: A novel Gram-staining-negative, rod-shaped, non-motile bacterium, designated strain LW9(T), was isolated from a water sample collected from Lonar Lake of Buldhana district, Maharashtra, India. Colonies and broth cultures were reddish orange due to the presence of carotenoid pigments. Strain LW9(T) was positive for catalase, ornithine decarboxylase and lysine decarboxylase activities and negative for gelatinase, oxidase, urease and lipase activities. The predominant fatty acids were iso-C(15 : 0) (31.3 %), iso-C(16 : 0) (9.3 %), anteiso-C(15 : 0) (7.3 %), iso-C(16 : 1) H (6.1 %), summed feature 3 (comprising C(16 : 1)ω7c/C(16 : 1)ω6c; 5.9 %), iso-C(17 : 1)ω9c (5.4 %) and iso-C(17 : 0) 3-OH (5.0 %). Strain LW9(T) contained MK-7 as the major respiratory quinone. The polar lipids consisted of phosphatidylethanolamine, two unidentified aminolipids and seven unidentified lipids. The DNA G+C content of strain LW9(T) was 40.5 mol%. 16S rRNA gene sequence analysis indicated that the type strains of Indibacter alkaliphilus and Aquiflexum balticum, two members of the family Cyclobacteriaceae (phylum 'Bacteroidetes') were the most closely related strains with sequence similarities of 93.0 and 94.0 %, respectively. Other members of the family Cyclobacteriaceae showed sequence similarities <93.0 %. Based on these phenotypic characteristics and on phylogenetic inference, strain LW9(T) is proposed as the representative of novel species in a new genus, Cecembia lonarensis gen. nov., sp. nov. The type strain of the type species, Cecembia lonarensis, is LW9(T) ( = CCUG 58316(T) = KCTC 22772(T)). Emended descriptions of the genera Indibacter, Nitritalea and Belliella are also proposed.
  INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 11/2011; 62(Pt 9):2252-8. · 2.11 Impact Factor
• Article: Cecembia lonarensis gen. nov., sp. nov., a novel haloalkalitolerant bacterium of the family Cyclobacteriaceae, isolated from a haloalkaline lake and emended descriptions of the genera Indibacter, Nitritalea, Belliella and Aquiflexum.

  P Anil Kumar, T N R Srinivas, S Madhu, R Sravan Kumar, S Singh, S W A Naqvi, S Mayilraj, S Shivaji
  INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 07/2011; 61(Pt 7):1762. · 2.11 Impact Factor
• Article: Cecembia lonarensis gen. nov., sp. nov., a novel haloalkalitolerant bacterium of the family Cyclobacteriaceae, isolated from a haloalkaline lake and emended descriptions of the genera Indibacter, Nitritalea, Belliella and Aquiflexum.

  P Anil Kumar, T N R Srinivas, S Madhu, R Sravan Kumar, S Singh, S W A Naqvi, S Mayilraj, S Shivaji
  [show abstract] [hide abstract]
  ABSTRACT: A novel Gram-staining-negative, rod shaped, non-motile bacterium, designated strain LW9T, was isolated from a water sample collected at a depth of 4.5 m from Lonar Lake of Buldhana district, Maharastra, India. The cell suspension (broth culture) was reddish-orange due to the presence of carotenoid pigments. Strain LW9T was positive for catalase, ornithine decarboxylase and lysine decarboxylase activities and negative for gelatinase, oxidase, urease and lipase activities. The predominant fatty acids present included iso-C15 : 0 (31.3 %), anteiso-C15 : 0 (7.34 %), iso-C16 : 0 (9.33 %), iso-C16 : 1 H (6.13 %), iso-C17 : 0 3-OH (5.04 %), iso-C17 : 1 ω9c (5.42 %) and C16 : 1 ω7c/C16 : 1 ω6c (5.86 %). Strain LW9T contained MK-4 and MK-7 as the major respiratory quinones. The polar lipids consisted of phosphatidylglycerol (PG), two unknown aminolipids (AL8, AL9), one unknown glycoaminolipid (GAL1), two unknown glycolipids (GL2, GL6) and one unknown phospholipid (PL2). The DNA G + C content of strain LW9T was 40.5 mol%. The 16S rRNA gene sequence analysis indicated Indibacter alkaliphilus and Aquiflexum balticum, two members of the family Cyclobacteriaceae (phylum Bacteroidetes) as the closest related species with sequence similarities of 93.0 and 94.0% respectively. Other members of the family Cyclobacteriaceae showed sequence similarities <93.0%. Based on these phenotypic characteristics and on phylogenetic inference, strain LW9T is proposed as the representative of a novel genus and species, Cecembia lonarensis gen. nov., sp. nov. The type strain of Cecembia gen. nov., is Cecembia lonarensis gen. nov., sp. nov. (LW9T) (= KCTC 22772T = CCUG 58316T).
  INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 09/2010; · 2.11 Impact Factor