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Summary
This summary is machine-generated.

Microorganisms metabolize plant-derived compounds like isoprene and monoterpenes, crucial for carbon cycling. This review details microbial enzymes and genes involved in monoterpene breakdown, highlighting knowledge gaps.

Keywords:
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Area of Science:

  • Biogeochemistry
  • Microbial Metabolism
  • Environmental Microbiology

Background:

  • Isoprene and monoterpenes are significant plant biomass components, with atmospheric emissions exceeding 500 Tg annually.
  • These volatile organic compounds are mineralized by microorganisms in various ecosystems, serving as carbon and energy sources.
  • Microbial transformation of monoterpenes involves functionalization, oxidation, and rearrangement, often as a detoxification mechanism.

Purpose of the Study:

  • To review enzymes, genes, and microorganisms involved in monoterpene metabolism.
  • To focus on taxonomically valid and available microbial cultures for studying monoterpene degradation.
  • To assess the ecological relevance of monoterpene metabolism using metagenomic data.

Main Methods:

  • Literature review of microbial monoterpene metabolism.
  • Analysis of enzymes and genes responsible for monoterpene transformations.
  • Examination of metagenomic data from microbiomes with monoterpene-rich diets.

Main Results:

  • Pseudomonas, Rhodococcus, Castellaniella, and Thauera are model organisms for monoterpene metabolism studies.
  • Numerous enzymes and genes are implicated in the initial steps of monoterpene breakdown.
  • Metagenomics confirms the ecological importance of monoterpene metabolism.

Conclusions:

  • Our understanding of microbial monoterpene metabolism is limited, despite its ecological significance.
  • Further research is needed to fully elucidate the biochemical pathways and enzymes involved.
  • The study highlights the need for improved biochemical knowledge to accurately interpret metagenomic findings.