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Light effects on Lasiodiplodia theobromae metabolome cultured in vitro

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Abstract

Introduction

The present work identified and compared intracellular metabolites and metabolic networks in mycelial cultures of Lasiodiplodia theobromae grown under 12 natural light and 24 hours’ dark using a 1 H NMR-based metabolomics approach.

Materials and methods

Fungal cultures were grown in potato dextrose media, and metabolites were extracted by sonication with sodium phosphate-buffered saline (pH = 6.0, 10% D2O, 0.1 mM TSP) from mycelium samples collected every week over four weeks.

Results

Multivariate analyses revealed that the light exposure group showed a positive correlation within beta-hydroxybutyrate, acetoacetate, acetone, betaine, choline, glycerol, and phosphocholine. On the other hand, phenyl acetate, leucine, isoleucine, valine, and tyrosine were positively correlated with dark conditions. Light favored the oxidative degradation of valine, leucine, and isoleucine, leading to the accumulation of choline, phosphocholine, betaine, and ketone bodies (ketogenesis). Ketogenesis, gluconeogenesis, and the biosynthesis of choline, phosphocholine, and betaine, were considered discriminatory routes for light conditions. The light-sensing pathways were interlinked with fungal development, as verified by the increased production of mycelia biomass without fruiting bodies and stress signaling, as demonstrated by the increased production of pigments.

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Authors

Contributions

ACC, SMAC, JRR, RRS constructed experimental design and prepared the manuscript; VAP prepared figures and tables; All authors reviewed and edted the manuscript.

Corresponding author

Correspondence to Alessandre C. Crispim.

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The authors declare that they have no conflicts of interest.

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Crispim, A.C., Crispim, S.M.A., Rocha, J.R. et al. Light effects on Lasiodiplodia theobromae metabolome cultured in vitro. Metabolomics 19, 75 (2023). https://doi.org/10.1007/s11306-023-02041-7

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  • DOI: https://doi.org/10.1007/s11306-023-02041-7

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