Publications

bacillus indicus sp. nov., an arsenic-resistant bacterium isolated from an aquifer in west bengal, india.	strain sd/3t (=mtcc 4374t=dsm 15820t), an arsenic-resistant bacterium, was isolated from a sand sample obtained from an arsenic-contaminated aquifer in chakdah district in west bengal, india (23 degrees 3' n 88 degrees 35' e). the bacterium was gram-positive, rod-shaped, non-motile, endospore-forming and yellowish-orange pigmented. it possessed all the characteristics that conform to the genus bacillus, such as it had a4beta murein type (l-orn-d-asp) peptidoglycan variant, mk-7 as the major mena ...	2004	15280316
bacillus herbersteinensis sp. nov.	two bacterial strains, designated d-1,5a(t) and d-1,5b, were isolated from a medieval wall painting in the chapel of castle herberstein, styria (austria). the gram-positive, heterotrophic, aerobic, spore-forming rods showed nearly identical whole-cell protein patterns, identical genomic fingerprints and identical physiological profiles, demonstrating their relationship at the species level. both strains contained meso-diaminopimelic acid in their peptidoglycan, possessed a quinone system compris ...	2005	16166719
carotenoids present in halotolerant bacillus spore formers.	six isolates of pigmented spore-forming bacteria were recovered from human faeces from subjects in vietnam. 16s rrna analysis demonstrated close association with known pigmented bacillus species. all isolates were able to tolerate growth on 8% nacl and were resistant to arsenate, characteristics that make them most related to bacillus indicus. two visible pigments were apparent, a yellow pigment found in vegetative cells and an orange pigment found only in spores. we used high-performance liquid ...	2006	16448498
growth of three bacteria in arsenic solution and their application for arsenic removal from wastewater.	the present paper compares the arsenic removal capacities of three bacterial strains namely, ralstonia eutropha mtcc 2487, pseudomonas putida mtcc 1194 and bacillus indicus mtcc 4374 form wastewater (simulated acid mine drainage) containing arsenic (as(iii):as(v)::1:1), fe, mn, cu and zn in the concentration of 15 mg/l, 10 mg/l, 2 mg/l, 5 mg/l and 10 mg/l respectively, in bulk liquid phase. growth patterns of these bacteria in presence of arsenic in solution as well as under starvation have also ...	2008	18792057
the safety of bacillus subtilis and bacillus indicus as food probiotics.	to conduct in vitro and in vivo assessments of the safety of two species of bacillus, one of which, bacillus subtilis, is in current use as a food supplement.	2008	18312567
marine bacterial isolates inhibit biofilm formation and disrupt mature biofilms of pseudomonas aeruginosa pao1.	according to the centers for disease control and prevention, biofilms cause 65% of infections in developed countries. pseudomonas aeruginosa biofilm cause life threatening infections in cystic fibrosis infection and they are 1,000 times more tolerant to antibiotic than the planktonic cells. as quorum sensing, hydrophobicity index and extracellular polysaccharide play a crucial role in biofilm formation, extracts from 46 marine bacterial isolates were screened against these factors in p. aerugino ...	2010	20665017
isolation of heterotrophic bacteria from palk bay sediments showing heavy metal tolerance and antibiotic production.	analysis of culturable and unculturable bacteria and their potential bioactive compounds from palk bay is yet to be explored. the present study for the first time characterizes the culturable bacteria from palk bay sediment using 16s rrna gene sequencing. the characterized bacteria were also screened for antibacterial activity against human and aquaculture pathogens. in the 16s rrna gene sequence analysis characterized that most of the bacteria were affiliated to members of firmicutes and less w ...	2010	20015629
carotenoids found in bacillus.	to identify the diversity of pigmented aerobic spore formers found in the environment and to characterize the chemical nature of this pigmentation.	2010	19878522
assessment and characterization of heavy metal resistance in palk bay sediment bacteria.	the present study aimed at characterizing the heavy metal resistance and assessing the resistance pattern to multiple heavy metals (300 mmol l?¹) by palk bay sediment bacteria. from 46 isolates, 24 isolates showed resistance to more than eight heavy metals. among the 24 isolates s8-06 (bacillus arsenicus), s8-10 (bacillus pumilus), s8-14 (b. arsenicus), s6-01 (bacillus indicus), s6-04 (bacillus clausii), ss-06 (planococcus maritimus) and ss-08 (staphylococcus pasteuri) exhibited high resistance ...	2011	21377723
carbohydrate-active enzymes from pigmented bacilli: a genomic approach to assess carbohydrate utilization and degradation.	spore-forming bacilli are gram-positive bacteria commonly found in a variety of natural habitats, including soil, water and the gastro-intestinal (gi)-tract of animals. isolates of various bacillus species produce pigments, mostly carotenoids, with a putative protective role against uv irradiation and oxygen-reactive forms.	2011	21892951
a novel compound from the marine bacterium bacillus pumilus s6-15 inhibits biofilm formation in gram-positive and gram-negative species.	biofilm formation is a critical problem in nosocomial infections and in the aquaculture industries and biofilms show high resistance to antibiotics. the aim of the present study was to reveal a novel anti-biofilm compound from marine bacteria against antibiotic resistant gram-positive and gram-negative biofilms. the bacterial extract (50 μg ml(-1)) of s6-01 (bacillus indicus = mtcc 5559) showed 80-90% biofilm inhibition against escherichia coli, shigella flexneri, proteus mirabilis and s6-15 (ba ...	2011	21614700
domibacillus robiginosus gen. nov., sp. nov., isolated from a pharmaceutical clean room.	a novel red-pigmented bacterial strain, designated ws 4628(t), was isolated from a pharmaceutical clean room of a vaccine-producing company and was investigated in a taxonomic study using a polyphasic approach. the strain was gram-stain-positive, strictly aerobic, motile, catalase-positive and produced spherical to slightly ellipsoidal endospores in rods. the genomic dna g+c content was 44.1 mol%. the major fatty acids were anteiso-c15:0, iso-c15:0 and anteiso-c17:0 and the predominant quinone w ...	2013	23064349
inhibition of iron-induced lipid peroxidation by newly identified bacterial carotenoids in model gastric conditions: comparison with common carotenoids.	newly identified spore-forming pigmented marine bacteria, bacillus indicus hu36 and bacillus firmus gb1, are sources of carotenoids (mainly 15 yellow and orange pigments and 13 pink pigments, respectively) with original structures. these bacterial carotenoids were evaluated for their ability to inhibit the iron-induced peroxidation of linoleic acid micelles, or sunflower oil-in-water emulsions, in comparison with β-carotene, lycopene and astaxanthin. lipid peroxidation was carried out in acidic ...	2013	23411789
genome-based reclassification of bacillus cibi as a later heterotypic synonym of bacillus indicus and emended description of bacillus indicus.	while characterizing a related strain, it was noted that there was little difference between the 16s rrna gene sequences of bacillus indicus lmg 22858(t) and bacillus cibi dsm 16189(t). phenotypic characterization revealed differences only in the utilization of mannose and galactose and slight variation in pigmentation. whole genome shotgun sequencing and comparative genomics were used to calculate established phylogenomic metrics and explain phenotypic differences. the full, genome-derived 16s ...	2014	25142211
interactions between carotenoids from marine bacteria and other micronutrients: impact on stability and antioxidant activity.	recently isolated spore-forming pigmented marine bacteria bacillus indicus hu36 are sources of oxygenated carotenoids with original structures (about fifteen distinct yellow and orange pigments with acylated d-glucosyl groups). in this study, we evaluated the stability (sensitivity to iron-induced autoxidation) and antioxidant activity (inhibition of iron-induced lipid peroxidation) of combinations of bacterial hu36 carotenoids with the bacterial vitamin menaquinone mq-7 and with phenolic antiox ...	2015	26610529
bacterial dynamics during yearlong spontaneous fermentation for production of ngari, a dry fermented fish product of northeast india.	ngari is the most popular traditionally processed non-salted fish product, prepared from sun-dried small cyprinid fish puntius sophore (ham.) in manipur state of northeast india. the microbial involvement in ngari production remained uncertain due to its low moisture content and yearlong incubation in anaerobically sealed earthen pots without any significant change in total microbial count. the culture-independent pcr-dgge analysis used during this study confirmed a drastic bacterial community s ...	2015	25637876
annotation and functional assignment of the genes for the c30 carotenoid pathways from the genomes of two bacteria: bacillus indicus and bacillus firmus.	bacillus indicus and bacillus firmus synthesize c30 carotenoids via farnesyl pyrophosphate, forming apophytoene as the first committed step in the pathway. the products of the pathways were methyl 4'-[6-o-acyl-glycosyl)oxy]-4,4'-diapolycopen-4-oic acid and 4,4'-diapolycopen-4,4'-dioic acid with putative glycosyl esters. the genomes of both bacteria were sequenced, and the genes for their early terpenoid and specific carotenoid pathways annotated. all genes for a functional 1-deoxy-d-xylulose 5-p ...	2015	25326460
stability of bacterial carotenoids in the presence of iron in a model of the gastric compartment - comparison with dietary reference carotenoids.	recently isolated spore-forming pigmented marine bacteria, bacillus indicus hu36 and bacillus firmus gb1 are sources of carotenoids (∼fifteen distinct yellow and orange pigments and ∼thirteen distinct pink pigments, respectively). they are glycosides of oxygenated lycopene derivatives (apo-lycopenoids) and are assumed to be more heat- and gastric-stable than common carotenoids. in this study, the oxidation by o2 of the bacterial carotenoids was initiated by free iron (fe(ii) and fe(iii)) or by h ...	2015	25595845
bacillus mangrovi sp. nov., isolated from a sediment sample from a mangrove forest.	a facultatively anaerobic, endospore forming, alkali-tolerant, gram-stain-positive, motile, rod-shaped bacterium, designated strain ak61t, was isolated from a sediment sample collected from coringa mangrove forest, india. colonies were circular, 1.5 mm in diameter, shiny, smooth, yellowish and convex with entire margins after 48 h growth at 30 °c. growth occurred at 15-42 °c, with 0-3 % (w/v) nacl and at ph 6-9. ak61t was positive for amylase activity and negative for oxidase, catalase, aesculin ...	2017	28714845