Excitation-dependent emission spectra of fungal fluorophores in terms of their similarity to fluorescence of dissolved organic matter

Elena V. Fedoseeva; Svetlana V. Patsaeva; Daria A. Khundzhua; Eva V. Prudnikova; Vera A. Terekhova

doi:10.1117/12.2590882

4 May 2021 Excitation-dependent emission spectra of fungal fluorophores in terms of their similarity to fluorescence of dissolved organic matter

Elena V. Fedoseeva, Svetlana V. Patsaeva, Daria A. Khundzhua, Eva V. Prudnikova, Vera A. Terekhova

Author Affiliations +

Proceedings Volume 11845, Saratov Fall Meeting 2020: Optical and Nanotechnologies for Biology and Medicine; 118450J (2021) https://doi.org/10.1117/12.2590882
Event: Saratov Fall Meeting 2020, 2020, Saratov, Russian Federation

Abstract

The cultures of filamentous fungi in aquatic medium release fluorescent metabolites (FM) with emission spectra that closely match the typical fluorescence bands found for soil extracts and aquatic fluorescent dissolved organic matter (FDOM). FM released from some fungal cultures show as well comparable values of fluorescent quantum yield, the blue shift of emission spectra excited in the UV, and a very close match of ultraviolet–visible absorbance spectral curves related to soil and aquatic FDOM, further strengthening the similarity of fluorophores in those aquatic material. Given the importance of microscopic filamentous fungi in the global carbon cycle, our results indicate that filamentous fungi are likely to be important sources of aquatic and soil FDOM of microbial origin.

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Elena V. Fedoseeva, Svetlana V. Patsaeva, Daria A. Khundzhua, Eva V. Prudnikova, and Vera A. Terekhova "Excitation-dependent emission spectra of fungal fluorophores in terms of their similarity to fluorescence of dissolved organic matter", Proc. SPIE 11845, Saratov Fall Meeting 2020: Optical and Nanotechnologies for Biology and Medicine, 118450J (4 May 2021); https://doi.org/10.1117/12.2590882

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