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New Mycorrhizal Fungus Identified in 407-Million-Year-Old Scottish Fossil

A FLIM–Raman imaging workflow fingerprints carbonized tissues to verify arbuscular symbiosis in an early land plant.

Overview

  • The New Phytologist study names Rugososporomyces lavoisierae inside the early land plant Aglaophyton majus from the Windyfield Chert in Scotland.
  • Preserved arbuscules indicate a mutual exchange of nutrients rather than parasitism, supporting a true symbiotic relationship.
  • This is the first mycorrhiza reported from the Windyfield Chert and the second fungal species documented in Aglaophyton majus.
  • Researchers distinguished fossilized fungal and plant tissues using confocal fluorescence lifetime imaging microscopy combined with Raman spectroscopy.
  • The specimen is curated at the National Museum of Scotland, and the team plans to apply the approach to additional Windyfield and nearby Rhynie chert material.