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ORIGINAL RESEARCH article

Front. Microbiol.
Sec. Microbiotechnology
Volume 15 - 2024 | doi: 10.3389/fmicb.2024.1433745
This article is part of the Research Topic Biosurfactants - Next Generation Biomolecules for Enhanced Biodegradation of Organic Pollutants, Volume II View all 6 articles

Solubilization and enhanced degradation of benzene phenolic derivatives -Bisphenol A/ Triclosan using a biosurfactant producing white rot fungus Hypocrea lixii S5 with plant growth promoting traits

Provisionally accepted
Mridula Chaturvedi Mridula Chaturvedi 1Navpreet Kaur Navpreet Kaur 1Pattanathu K. Rahman Pattanathu K. Rahman 2Shashi Sharma Shashi Sharma 1*
  • 1 Amity Institute of Biotechnology, Amity University, Noida, India
  • 2 Liverpool John Moores University, Liverpool, North West England, United Kingdom

The final, formatted version of the article will be published soon.

    Endocrine disrupting chemicals (EDCs) as benzene phenolic derivatives partition to organic matter in sludge / soil sediments being hydrophobic and show poor bioavailability to microbes. For degradation, solubilization of these hydrophobic pollutants is desirable for enhanced mass transfer to microbial cells. In the present study, we have reported for the first time, the degrading potential of a versatile white rot fungal isolate S5 identified as Hypocrea lixii with simultaneous production of lipopeptide biosurfactant (BS) during degradation of Bisphenol A (BPA)/Triclosan (TCS) under shake flask conditions. Sufficient growth of WRF for five days before supplementation of 50 ppm EDC (BPA / TCS) in set B, showed an increase in degradation rates by 23% and 29% with corresponding increase in secretion of lignin modifying enzymes compared to set A wherein almost 84 % and 97% inhibition in fungal growth was observed when BPA /TCS were added at time of fungal inoculation. Further in set B, EDC concentration stimulated expression of laccase and Lip with 24.44 U/L of laccase and 281.69 U/L of lignin peroxidases (Lip) in 100 ppm BPA and 344 U/L Lip in 50 ppm TCS supplemented medium compared to their respective controls (without EDC). Biodegradation was also found to be correlated with lowering of surface tension from 57.02 mN/m (uninoculated control) to 44.16 mN/m in case of BPA and 38.49 mN/m in TCS, indicative of biosurfactant (BS) production. FTIR, GCMS and LC-ESI/MSMS confirmed the presence of surfactin lipopeptide isoforms. The WRF also displayed positive plant growth promoting traits as production of Ammonia, Indole acetic acid, Siderophores, Zn solubilization and 1-1-aminocyclopropane-1-carboxylate (ACC) deaminase activity, reflecting its soil restoration ability.

    Keywords: lipopeptide, Lignin modifying enzymes, Degradation correlation, metabolic pathway, bioaccumulation

    Received: 16 May 2024; Accepted: 28 Aug 2024.

    Copyright: © 2024 Chaturvedi, Kaur, Rahman and Sharma. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Shashi Sharma, Amity Institute of Biotechnology, Amity University, Noida, India

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