NDLI: Isolation, Screening and Evaluation of Antifouling Activity of Mangrove Associated Bacterium, Bacillus subtilis subsp. subtilis RG

Content Provider	Springer Nature Link
Author	Palavesam, A. Immanuel, G. Prakash, S. Ramasubburayan, R. Iyapparaj, P. Sumathi, S. Titus, Susan
Copyright Year	2015
Abstract	In the present study, an attempt has been made to explore the antifouling activity of bacterial strains isolated from the root and rhizosphere soil of Pichavaram mangroves, India. Altogether, 14 different mangrove associated bacterial strains (MAB1–14) were isolated and screened for antagonistic activity against fouling bacterial strains. Screening results inferred that, five (35.71 %) out of 14 MAB isolates exhibited antagonistic activity. Among them, MAB6 showed notable growth inhibitory activity and it was identified as Bacillus subtilis subsp. subtilis through 16S rRNA gene sequencing. The crude ethyl acetate extract of B. subtilis subsp. subtilis RG strongly inhibited (8–13 mm) the growth of fouling bacterial strains. Minimum inhibitory concentration (MIC) of extract against fouling bacterial strains was ranged between 25 and 50 µg/ml; whilst minimum bactericidal concentration was ranged from 50 to 100 µg/ml, respectively. This extract has also effectively inhibited the growth of fouling microalgal strains with the MIC range of 50–100 µg/ml, respectively. Anticrustacean assay using Artemia franciscana larvae showed the LC$_{50}$ value of 264.89 µg/ml. Further, the lower EC$_{50}$ value (63.46 µg/ml) than the LC$_{50}$ value (156.32 µg/ml) and 100 % recovery of mussel Perna indica in toxicity assay inferred the non-toxic nature of the extract.
Starting Page	1015
Ending Page	1024
Page Count	10
File Format	PDF
ISSN	03698211
Journal	Proceedings of the National Academy of Sciences, India Section B: Biological Sciences
Volume Number	87
Issue Number	3
e-ISSN	22501746
Language	English
Publisher	Springer India
Publisher Date	2015-11-26
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Life Sciences Plant Biochemistry Nucleic Acid Chemistry Bacillus subtilis subsp. subtilis Antifouling Behavioral Sciences Mangroves Non-toxic
Content Type	Text
Resource Type	Article
Subject	Environmental Science Agricultural and Biological Sciences

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