Decay of Carpinus betulus wood by Trametes versicolor: an anatomical and chemical study

Ehsan Bari (Corresponding Author), Mehrdad Ghodskhah Daryaei, Maryam Karim, Mohsen Bahmani, Olaf Schmidt, Steve Woodward, Mohammad Ali Tajick Ghanbary, Asghar Sistani

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Decay patterns occurring in wood of hornbeam (Carpinus betulus) during natural decay in vivo were investigated and compared to decay in artificially inoculated wood in vitro. The fungal species causing decay was determined by morphological characterization and confirmed as Trametes versicolor using rDNA-ITS PCR and sequencing. T. versicolor caused degradation with properties of both simultaneous and selective white-rot. Chemical and FT-IR analyses suggested that T. versicolor caused severe reduction of lignin-carbohydrate complexes and guaiacyl lignin within the cell walls during natural decay. Under the light microscope, it was clear that decomposition of cell elements in the reaction zones of naturally decayed wood was greater than in inoculated wood. Histological analyses of inoculated wood blocks suggested that T. versicolor was able to switch from a typical simultaneous rot to selective delignification, with degradation of the middle lamella, and of lignin in cell corners. The results of our work demonstrated that test fungus able to attack the hornbeam tree by saprotrophic and parasitic life strategies.
Original languageEnglish
Pages (from-to)68-77
Number of pages10
JournalInternational Biodeterioration & Biodegradation
Volume137
Early online date28 Nov 2018
DOIs
Publication statusPublished - 1 Feb 2019

Keywords

  • Trametes versicolor
  • Natural infection
  • Carpinus betulus
  • Wood decay
  • Reaction zone
  • FT-IR
  • rDNA-ITS analysis
  • Light microscopy

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