Bioactive glycolipid biosurfactant from seaweed Sargassum myriocystum associated bacteria Streptomyces sp. SNJASM6

Javee, Anand; Karuppan, Ramamoorthy; Subramani, Nagaraj

doi:10.1016/j.bcab.2020.101505

Cited by 19 publications

(7 citation statements)

References 34 publications

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“…Decanoic acid was produced by Pseudomonas aeraginosa strain 44T1, this fatty acid characteristic feature of glycolipid [ 53 ]. According to Javee et al [ 54 ] fatty acids (octadecanoic acids, petadecanoic methyl ester, palmitic acid and oleic acid) are produced from Staphylococcus saprophyticus SBPS15. Application of any bacteria for plant growth needs to be screened for various PGP traits like indole, ammonia, and solubilization of phosphate [ 55 ].…”

Section: Discussionmentioning

confidence: 99%

Biosurfactant producing multifarious Streptomyces puniceus RHPR9 of Coscinium fenestratum rhizosphere promotes plant growth in chilli

et al. 2022

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The present study involves isolation of Streptomyces spp. from rhizosphere of Coscinium fenestratum Gaertn, an endangered medicinal plant from Western Ghats of Karnataka, India. Four potential isolates were identified by 16S rRNA sequencing as Streptomyces sp. RHPR3, Streptomyces puniceus RHPR9, Streptomyces sp. RHPR14 and Streptomyces mediolani RHPR25. An enrichment culture method was used for the isolation of Streptomyces spp. for biosurfactant activity. Among four potential Streptomyces spp., S. puniceus RHPR9 showed highest Emulsification index (EI) (78±0.2%) and Emulsification assay (EA) (223±0.2 EU mL-1). Thin layer chromatography, Fourier transform infrared spectroscopy (FTIR) and mass spectrometric analysis revealed that as glycolipid. Further confirmed by presence of fatty acids like hexanoic acid methyl ester, decanoic acid by Gas chromatography mass spectroscopy (GC-MS) analysis. S. puniceus RHPR9 showed a significant IAA production (41μg mL-1), solubilized P (749.1 μg mL-1), growth promotion of chilli (Capsicum annuum L.) was evaluated using paper towel method and greenhouse conditions. S. puniceus RHPR9 showed a significant increase in seed vigor index (2047) and increase in plant biomass (65%) when compared to uninoculated control. To our knowledge, this is the first report on epiphytic S. puniceus RHPR9 isolated from an endangered medicinal plant C. fenestratum Gaertn, for biosurfactant production and plant growth promotion activities.

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Section: Discussionmentioning

confidence: 99%

Biosurfactant producing multifarious Streptomyces puniceus RHPR9 of Coscinium fenestratum rhizosphere promotes plant growth in chilli

et al. 2022

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“…Only 1% of the total microbial populations linked to plants are explored so far [ 7 ]. Moreover, approximately 70% of the endophytes that have been isolated and identified are fungal and the remaining portion is bacteria, mainly belonging to the four phyla: Firmicutes, Proteobacteria, Bacteroidetes, and Actinobacteria [ 8 ]. Actinomycetes are filamentous Gram-positive microorganisms with high G + C, belonging to the phylum Actinobacteria [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Bioprospecting of endophytic actinobacterium associated with Aloe ferox mill for antibacterial activity

Maliehe

Mbambo

Ngidi

et al. 2022

BMC Complement Med Ther

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Background The emergence of drug resistance among pathogens has resulted in renewed interest in bioprospecting for natural microbial products. Methods This study aimed to bioprospecting endophytic actinobacterium associated with Aloe ferox Mill for its antibacterial activity. Endophytic actinomycetes were isolated from the gel of A. ferox Mill by surface sterilization technique using actinomycete isolation agar. The isolate with a promising antibacterial activity was identified using 16S rRNA sequence analysis. The minimum inhibitory concentration (MIC) of the extract was assessed by the micro-dilution method and its effect on the respiratory chain dehydrogenase (RCD) activity was ascertained by the iodonitrotetrazolium chloride (INT) assay. Fourier transform-infrared spectrophotometer (FTIR) and gas chromatography-mass spectrophotometry (GC-MS) were employed to identify functional groups and the chemical constituents, respectively. Results The actinobacterium was found to be Streptomyces olivaceus CP016795.1. Its extract displayed noteworthy antibacterial activity (MIC ≤1 mg/mL) against Staphylococcus aureus (ATCC 25925), Bacillus cereus (ATCC 10102), and Escherichia coli (ATCC 25922); and showed an inhibitory effect on the RCD activity. FTIR spectrum displayed hydroxyl, amine, and aromatic groups, and the GC–MS revealed 5-Hydroxymethylfurfural as the main constituent (19.47%). Conclusions S. olivaceus CP016795.1 can serve as a potential source of effective antibacterial compounds.

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“…Biosurfactants are secondary metabolites produced by microorganisms used in many commercial applications due to their low toxicity, substantial biodegradability, and environmentally benign nature ( Thavasi et al, 2011 ; Chaprão et al, 2015 ; Javee et al, 2020 ). Biosurfactants consist of both hydrophilic and hydrophobic regions that are formed from amino acids, as well as saturated and unsaturated fatty acids, respectively ( Sharma et al, 2015 ; Bhatt et al, 2021b ), which enables a reduction in surface tension and reaching out between two solvate molecules, thus accelerates the solvation of hydrophobic molecules in aqueous media for emulsion formation ( Banat, 1995 ; Lamilla et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Tapping the Role of Microbial Biosurfactants in Pesticide Remediation: An Eco-Friendly Approach for Environmental Sustainability

2021

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Pesticides are used indiscriminately all over the world to protect crops from pests and pathogens. If they are used in excess, they contaminate the soil and water bodies and negatively affect human health and the environment. However, bioremediation is the most viable option to deal with these pollutants, but it has certain limitations. Therefore, harnessing the role of microbial biosurfactants in pesticide remediation is a promising approach. Biosurfactants are the amphiphilic compounds that can help to increase the bioavailability of pesticides, and speeds up the bioremediation process. Biosurfactants lower the surface area and interfacial tension of immiscible fluids and boost the solubility and sorption of hydrophobic pesticide contaminants. They have the property of biodegradability, low toxicity, high selectivity, and broad action spectrum under extreme pH, temperature, and salinity conditions, as well as a low critical micelle concentration (CMC). All these factors can augment the process of pesticide remediation. Application of metagenomic and in-silico tools would help by rapidly characterizing pesticide degrading microorganisms at a taxonomic and functional level. A comprehensive review of the literature shows that the role of biosurfactants in the biological remediation of pesticides has received limited attention. Therefore, this article is intended to provide a detailed overview of the role of various biosurfactants in improving pesticide remediation as well as different methods used for the detection of microbial biosurfactants. Additionally, this article covers the role of advanced metagenomics tools in characterizing the biosurfactant producing pesticide degrading microbes from different environments.

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Bioactive glycolipid biosurfactant from seaweed Sargassum myriocystum associated bacteria Streptomyces sp. SNJASM6

Cited by 19 publications

References 34 publications

Biosurfactant producing multifarious Streptomyces puniceus RHPR9 of Coscinium fenestratum rhizosphere promotes plant growth in chilli

Biosurfactant producing multifarious Streptomyces puniceus RHPR9 of Coscinium fenestratum rhizosphere promotes plant growth in chilli

Bioprospecting of endophytic actinobacterium associated with Aloe ferox mill for antibacterial activity

Tapping the Role of Microbial Biosurfactants in Pesticide Remediation: An Eco-Friendly Approach for Environmental Sustainability

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