Journal
BIOFOULING
Volume 32, Issue 9, Pages 979-993Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/08927014.2016.1216103
Keywords
Candida albicans; Candida tropicalis; Pleurotus florida; 3,5-di-tert-butylphenol; cell wall integrity; ROS accumulation
Funding
- DST-FIST [SR-FST/LSI-087/2008]
- UGC-SAP, New Delhi [F.3-28/2011 (SAP-II)]
- Department of Biotechnology, Government of India [BT/BI/25/015/2012 (BIF)]
- DST (PURSE) [SR/S9/Z-23/2010/42(G)]
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The methanolic extract (PFME) of Pleurotus florida was assessed for anti-biofilm activity against Candida species. 3,5-Di-tert-butylphenol (3,5-DTB) was identified as the major antifungal constituent in PFME. In its pure form 3,5-DTB inhibits, disrupts, and reduces the viability of biofilm cells as seen from scanning electron and confocal microscopy studies. Microscopic studies and propidium iodide uptake assays confirmed that 3,5-DTB damages the cell membrane of Candida cells. In addition, 3,5-DTB induces accumulation of reactive oxygen species (ROS) which contribute to its pronounced anti-biofilm activity. The results of the present study show that 3,5-DTB exhibits combined antibiofilm and conventional fungicidal activity against Candida species and elucidate the underlying mechanisms.
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