Light effects on Lasiodiplodia theobromae metabolome cultured in vitro

AbstractIntroductionThe present work identified and compared intracellular metabolites and metabolic networks in mycelial cultures ofLasiodiplodia theobromae grown under 12 natural light and 24 hours ’ dark using a1 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.ResultsMultivariate 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.

Source: Metabolomics - August 14, 2023 Category: Biology Source Type: research