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Pontibacter aurantiacus sp. nov. isolated from hexachlorocyclohexane (HCH) contaminated soil Authors: Priya Singh (/search?value1=Priya+Singh&option1=author&noRedirect=true)1,†, Rashmi Kumari Buy:$35.00 1,† (/search?value1=Rashmi+Kumari&option1=author&noRedirect=true) , Namita Nayyar (/search? value1=Namita+Nayyar&option1=author&noRedirect=true)1, Rup Lal (/search?value1=Rup+Lal&option1=author&noRedirect=true)1 VIEW AFFILIATIONS *Correspondence: Rup Lal, [email protected] (mailto:[email protected])

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First Published Online: 05 June 2017, International Journal of Systematic and Evolutionary Microbiology 67: 1400-1407, doi: (Digital Object Identifier) 10.1099/ijsem.0.001833 (https://dx.doi.org/10.1099/ijsem.0.001833) Subject: New Taxa - Bacteroidetes

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Received: 01/08/2016 Accepted: 25/01/2017 Cover date: 01/05/2017 Abstract

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Strain NP1T, a Gram-stain-negative, orange, rod-shaped bacterium was isolated from hexacholorocyclohexane (HCH)contaminated soil sediment samples collected from Ummari village, Lucknow, Uttar Pradesh, India. The results of 16S rRNA gene sequence analysis indicated that NP1T clustered with members of the genus Pontibacter (https://doi.org/10.1601/nm.9761) of the order Cytophagales (https://doi.org/10.1601/nm.17929) , family Cytophagaceae (https://doi.org/10.1601/nm.14010) and phylum Bacteriodetes. The 16S rRNA gene sequence similarity with type strains of members of the genus Pontibacter (https://doi.org/10.1601/nm.9761) ranged from 98.57 to 93.95% with Pontibacter odishensis (https://doi.org/10.1601/nm.24902) JC130T (98.57%), Pontibacter korlensis (https://doi.org/10.1601/nm.13536) X14-1T (97.82%), Pontibacter litorisediminis (https://doi.org/10.1601/nm.29113) YKTF-7T (97.42%) and Pontibacter virosus (https://doi.org/10.1601/nm.29163) W-14T (97.01%) as the closest neighbours. Cells of NP1T were aerobic, motile and oxidase- and catalase-positive. NP1T was capable of hydrolysis of gelatin, aesculin and starch and reduced nitrates to nitrogen. The major fatty acids of NP1T were summed feature 4 and iso-C 15: 0 . The polar lipid profile of NP1

T showed the presence of phosphatidylethanolamine (PE), unknown glycolipids and unknown

aminolipids. Menaquinone-7 (MK-7) was the predominant respiratory quinone and sym-homospermidine was found to be the

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predominant polyamine in NP1T. The DNA G+C content of NP1T was 52.1±0.7mol%. The levels of DNA–DNA relatedness of NP1T to P. odishensis (https://doi.org/10.1601/nm.24902) JC-130T, P. korlensis (https://doi.org/10.1601/nm.13536) X14-1T, P. lit (https://doi.org/10.1601/nm.29113) o (https://doi.org/10.1601/nm.29113) r (https://doi.org/10.1601/nm.29113) i (https://doi.org/10.1601/nm.29113) sediminis (https://doi.org/10.1601/nm.29113) YKTF-7T and P. virosus (https://doi.org/10.1601/nm.29163) W14T were 44.9±0.6%, 40.5±0.4%, 34.4±0.7%and 33.4±0.5%respectively. Based on the phenotypic, chemotaxonomic, physiological and biochemical evidence and DNA–DNA hybridization results, it is proposed that NP1T represents a novel species of the genus Pontibacter (https://doi.org/10.1601/nm.9761) , for which the name Pontibacter aurantiacus sp. nov. is proposed. The type strain is NP1T (KCTC 42943T=CCM 8697T=MCC 2931T). † These authors contributed equally to this work. The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain NP1T (=KCTC 42943T =CCM 8697T =MCC 2931T) is KT361203 (https://www.ncbi.nlm.nih.gov/nuccore?term=KT361203).2. Two supplementary figures are available with the online Supplementary Material. Keyword(s): Pontibacter (/search?value1=%27Pontibacter%27&option1=pub_keyword), polyphasic approach (/search? value1=%27polyphasic+approach%27&option1=pub_keyword), hexachlorocyclohexane (/search? value1=%27hexachlorocyclohexane%27&option1=pub_keyword), aurantiacus (/search? value1=%27aurantiacus%27&option1=pub_keyword)

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