Transcriptome of different fruiting stages in the cultivated mushroom Cyclocybe aegerita suggests a complex regulation of fruiting and reveals enzymes putatively involved in fungal oxylipin biosynthesis

BMC Genomics

Axel Orban¹  Annsophie Weber¹  Martin Rühl²  Robert Herzog³  Florian Hennicke⁴ 

[1] Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, 35392, Giessen, Hesse, Germany;Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, 35392, Giessen, Hesse, Germany;Fraunhofer Institute for Molecular Biology and Applied Ecology IME Branch for Bioresources, 35392, Giessen, Hesse, Germany;International Institute Zittau, Technical University Dresden, 02763, Zittau, Saxony, Germany;Project Group Genetics and Genomics of Fungi, Ruhr-University Bochum, Chair Evolution of Plants and Fungi, 44780, Bochum, North Rhine-Westphalia, Germany;

关键词: Basidiomycota;    C8 oxylipins;    Global gene expression analysis;    Volatilome;    Developmental biology;    Multicellular development;    Carpophore;    Mycelium;    Black poplar mushroom;    Pioppino;    Sesquiterpenes;    Dioxygenases;   

DOI  :  10.1186/s12864-021-07648-5

来源: Springer

【 摘 要 】

BackgroundCyclocybe aegerita (syn. Agrocybe aegerita) is a commercially cultivated mushroom. Its archetypal agaric morphology and its ability to undergo its whole life cycle under laboratory conditions makes this fungus a well-suited model for studying fruiting body (basidiome, basidiocarp) development. To elucidate the so far barely understood biosynthesis of fungal volatiles, alterations in the transcriptome during different developmental stages of C. aegerita were analyzed and combined with changes in the volatile profile during its different fruiting stages.ResultsA transcriptomic study at seven points in time during fruiting body development of C. aegerita with seven mycelial and five fruiting body stages was conducted. Differential gene expression was observed for genes involved in fungal fruiting body formation showing interesting transcriptional patterns and correlations of these fruiting-related genes with the developmental stages. Combining transcriptome and volatilome data, enzymes putatively involved in the biosynthesis of C8 oxylipins in C. aegerita including lipoxygenases (LOXs), dioxygenases (DOXs), hydroperoxide lyases (HPLs), alcohol dehydrogenases (ADHs) and ene-reductases could be identified. Furthermore, we were able to localize the mycelium as the main source for sesquiterpenes predominant during sporulation in the headspace of C. aegerita cultures. In contrast, changes in the C8 profile detected in late stages of development are probably due to the activity of enzymes located in the fruiting bodies.ConclusionsIn this study, the combination of volatilome and transcriptome data of C. aegerita revealed interesting candidates both for functional genetics-based analysis of fruiting-related genes and for prospective enzyme characterization studies to further elucidate the so far barely understood biosynthesis of fungal C8 oxylipins.

【 授权许可】

CC BY