Herbicidal Activity of an Epibiotic Bacillus Strain WP3 from Sea Fan Coral

Abstract

Marine organisms continue to be a huge source to produce unique and potential bioactive compounds that cure deadly disease. This research investigates the herbicidal properties of bacteria isolated from surface of the coral, Junceella juncea (Pallas, 1766). Two hundred and thirty four different bacterial strains were isolated from the coral from Tuticorin coast, Gulf of Mannar region, south east coast of India. The strain WP3 was found to prove excellent herbicidal property when tested against Lemna minor. The 16S rRNA sequencing and phylogenetic identification shows that the stain WP3 was identified to fell under the genera Bacillus. The assay was carried out for crude extract and column purified extract. Mass spectrophotometry (MALDI-TOF) analysis has shown that the mass of the molecules ranged from 1148-1729 Da. Thus the marine bacteria isolated from corals are a potential source of novel bioactive agents and other natural products.

Bioherbicide Effect of Effluent from Processed Manihot esculentus Tubers

“…The isolation of Aspergillus from the sample as shown in table 4 is similar to the work of [17] and its herbicidal activity has been shown by the report of [18] on SilybummarianumL. Herbicidal activities of Bacillus has been shown by the work of [19] using epibiotic strain, Bacillus kochii against Lemna minor L. (duckweed). Mucor which is a saprotrophic fungus was isolated from the effluent and test soil, showing that the decaying cassava tubers were the substrate on to which it fed.…”