Diversity and bioactive potentials of culturable heterotrophic bacteria from the surficial sediments of the Arabian Sea

Anas, Abdulaziz; Nilayangod, Charulatha; Corso, Jasmin; Vinothkumar, Saradavey; Parameswaran, P.S.; Nair, Shanta

doi:10.1007/s13205-016-0556-x

Cited by 14 publications

(8 citation statements)

References 43 publications

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“…Observations of high degree of microbial diversity in the Arabian Sea [10], [11] led to the hypothesis that the eastern continental slope of Arabian Sea is an enormous source of microbial flora. Microbial diversity of the eastern Arabian Sea has been previously reported [8], [12], [13]. Our study reports the bacterial diversity from the sediments of eastern continental slope of Arabian Sea and their enzyme-producing potential.…”

Section: Discussionmentioning

confidence: 68%

“…The continental slope of Arabian Sea is largely unexplored, and may provide a rich source of the potential bacteria capable of producing extracellular hydrolytic enzymes. There are a number of studies reporting marine bacteria capable of producing various extracellular enzymes from different areas of Arabian Sea [6], [7], [8]. Yet, reports are scanty on marine bacteria isolated from sediments of the continental slope of the eastern Arabian Sea.…”

Section: Introductionmentioning

confidence: 99%

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Phylogenetic diversity and biotechnological potentials of marine bacteria from continental slope of eastern Arabian Sea

Farha

Purushothaman³

et al. 2018

Journal of Genetic Engineering and Biotechnology

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Marine environments are substantially untapped source for the isolation of bacteria with the capacity to produce various extracellular hydrolytic enzymes, which have important ecological roles and promising biotechnological applications. Hydrolases constitute a class of enzymes widely distributed in nature from bacteria to higher eukaryotes. Marine microbial communities are highly diverse and have evolved during extended evolutionary processes of physiological adaptations under the influence of a variety of ecological conditions and selection pressures. A number of marine hydrolases have been described, including amylases, lipases and proteases, which are being used extensively for biotechnological applications. The present study was carried out to isolate marine bacteria from continental slope sediments of the eastern Arabian Sea and explore their biotechnological potential. Among the 119 isolates screened, producers of amylases (15%), caseinases (40%), cellulases (40%), gelatinases (60%), lipases (26%), ligninases (33%), phytase (11%) and Malachite Green dye degraders (16%) were detected. Phylogenetic analysis based on 16S rRNA gene sequencing showed that predominant marine sediment bacteria possessing more than four enzymatic activities belonged to the phyla Firmicutes and Proteobacteria, was assigned to the genera Bacillus, Planococcus, Staphylococcus, Chryseomicrobium, Exiguobacterium and Halomonas. Biodegradation of the dye Malachite Green using the liquid decolorization assay showed that both the individual cultures (Bacillus vietnamensis, Planococcus maritimus and Bacillus pumilus) and their consortium were able to decolorize more than 70% of dye within 24 h of incubation. This is the first report on diversity and extracellular hydrolytic enzymatic activities and bioremediation properties of bacteria from continental slope sediment of eastern Arabian Sea.

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Section: Discussionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Phylogenetic diversity and biotechnological potentials of marine bacteria from continental slope of eastern Arabian Sea

Farha

Purushothaman³

et al. 2018

Journal of Genetic Engineering and Biotechnology

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“…Nonetheless, early studies in Indian coastal areas revealed that half of the coastal areas are found to be moderate and highly polluted areas by human-activities, coastal urbanization, shipping and aquaculture activities. The influence of pollutions on bacterial diversity were well documented by Ramaiah et al, 1996 , Divya et al, 2010 , Divya et al, 2011 ), Anas et al, (2016) and functional gene diversity in the pelagic and seawater of Indian coastal regions and elsewhere were studied by using classical microbiology approaches ( Woebken et al, 2008 , Ward et al, 2009 , Luke et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Microbial diversity from the continental shelf regions of the Eastern Arabian Sea: A metagenomic approach

Sachithanandam

Saravanane

Chandrasekar

et al. 2020

Saudi Journal of Biological Sciences

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The marine microbiome is a complex and least-understood habitat, which play a significant role in global biogeochemical cycles. The present study reported the culture-independent assessment of microbial diversity from the Arabian Sea (AS) sediments (from Gujarat to Malabar; at 30 m depth) by using metagenome sequence analysis. Our results elucidated that bacterial communities in the Malabar coastal region are highly diverse than the Gujarat coast. Moreover, Statistical analysis (Spearman rank correlation) showed a significant correlation co-efficient value (r = P < 0.001) between microbial communities and physicochemical parameters (salinity and dissolved oxygen) in the water column. A total of 39 bacterial phyla were recorded from the eastern side of AS, of which six phyla Proteobacteria, Bacteroidetes , Actinobacteria, Cyanobacteria, Firmicutes, and Planctomycetes were found to be the most dominant group. The most dominant genus from Valapad region (Malabar Coast) was found to be Halomonas sp., while other regions were dominated with Psychrobacter pulmonis . The subsequent Principal Coordinate Analysis (PCoA) showed 99.53% variance, which suggests that, highly distinct microbial communities at Valapad (Malabar Coast) sampling location than other sites. Moreover, the microbial metabolic activity analysis revealed the important functions of microbial communities in the AS are hydrocarbon degradation, polymer degradation, nutrient oxidation and sulphate reduction (biodegradation process). Further extended studies are needed to be carried out for better understanding the functional diversity of microbial communities from the marine sediments.

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“…and/or Lysinibacillus spp. displayed high level of bactericidal and cytotoxic properties (Anas et al, 2016).…”

Section: Anti Cancer/cytotoxic Activitymentioning

confidence: 99%

Indian Marine Pharmacology: A Sneak Peek into the Ecosystem

Kulkarni¹,

Dikshit

2017

Proceedings of the Indian National Science Academy

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This article tries to sift and collate the current status of the Marine Pharmacology with specific reference to the Indian contributions. The rich and diverse marine flora and fauna along the Indian coastline offers a wealth of resources to explore and exploit towards the benefit of the human health ranging from antioxidants/anti-inflammatory to antibacterials/ antimicrobials to anticancer entities and further to those that affect metabolic syndromes. It specifically outlines the range of chemical entities and/or their derivatives that are explored from the marine ecosystems towards various pharmacological indications.

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Diversity and bioactive potentials of culturable heterotrophic bacteria from the surficial sediments of the Arabian Sea

Cited by 14 publications

References 43 publications

Phylogenetic diversity and biotechnological potentials of marine bacteria from continental slope of eastern Arabian Sea

Phylogenetic diversity and biotechnological potentials of marine bacteria from continental slope of eastern Arabian Sea

Microbial diversity from the continental shelf regions of the Eastern Arabian Sea: A metagenomic approach

Indian Marine Pharmacology: A Sneak Peek into the Ecosystem

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