Antimicrobial Potential, Identification and Phylogenetic Affiliation of Wild Mushrooms from Two Sub-Tropical Semi-Evergreen Indian Forest Ecosystems

PLoS One. 2016 Nov 30;11(11):e0166368. doi: 10.1371/journal.pone.0166368. eCollection 2016.

Abstract

The diversity of wild mushrooms was investigated from two protected forest areas in India and 231 mushroom specimens were morphologically identified. Among them, 76 isolates were screened for their antimicrobial potential against seven bacterial and fungal pathogens. Out of 76 isolates, 45 isolates which displayed significant antimicrobial activities were identified using ITS rRNA gene amplification and subsequently phylogenetically characterized using random amplified polymorphic DNA (RAPD) and inter-simple sequence repeat (ISSR) markers. Sequencing of the ITS rRNA region classified the isolates into 16 genera belonging to 11 families. In total, 11 RAPD and 10 ISSR primers were selected to evaluate genetic diversity based on their banding profile produced. In total 337 RAPD and 312 ISSR bands were detected, among which percentage of polymorphism ranges from 34.2% to 78.8% and 38.6% to 92.4% by using RAPD and ISSR primers respectively. Unweighted Pair-Group Method with Arithmetic Mean (UPGMA) trees of selected two methods were structured similarly, grouping the 46 isolates into two clusters which clearly showed a significant genetic distance among the different strains of wild mushroom, with an similarity coefficient ranges from 0.58 to 1.00 and 0.59 to 1.00 with RAPD and ISSR analysis respectively. This reporthas highlighted both DTR and MNP forests provide a habitat for diverse macrofungal species, therefore having the potential to be used for the discovery of antimicrobials. The report has also demonstrated that both RAPD and ISSR could efficiently differentiate wild mushrooms and could thus be considered as efficient markers for surveying genetic diversity. Additionally, selected six wild edible mushroom strains (Schizophyllum commune BPSM01, Panusgiganteus BPSM27, Pleurotussp. BPSM34, Lentinussp. BPSM37, Pleurotusdjamor BPSM41 and Lentinula sp. BPSM45) were analysed for their nutritional (proteins, carbohydrates, fat and ash content), antioxidant potential. The present findings also suggested that the wild edible mushroom strains do not have only nutritional values but also can be used as an accessible source of natural antioxidants.

MeSH terms

  • Agaricales* / chemistry
  • Agaricales* / classification
  • Agaricales* / genetics
  • Anti-Bacterial Agents / pharmacology*
  • Antifungal Agents / pharmacology*
  • Antioxidants / pharmacology*
  • Bacteria / drug effects*
  • Cell Extracts / pharmacology*
  • DNA, Ribosomal Spacer / genetics
  • Drug Discovery / methods
  • Food
  • Forests
  • Fungi / drug effects*
  • India
  • Microbial Sensitivity Tests
  • Nutritive Value*
  • Polymorphism, Single Nucleotide / genetics
  • Random Amplified Polymorphic DNA Technique
  • Spectroscopy, Fourier Transform Infrared

Substances

  • Anti-Bacterial Agents
  • Antifungal Agents
  • Antioxidants
  • Cell Extracts
  • DNA, Ribosomal Spacer

Grants and funding

This work was supported by grants sanctioned to BPS from the DBT sponsored NER-Twinning project (No. BT/320/NE/TBP/2012), the Government of India, New Delhi. Authors are thankful to the Department of Biotechnology, for establishment of DBT-BIF centre and DBT-State Biotech Hub in the Department, which has been used for the present study.