Metabolomics reveals changes in metabolite concentrations and correlations during sexual development of Eurotium cristatum (synonym: Aspergillus cristatus)
文献类型： 外文期刊
作者： Ren, C. G. 1 ; Tan, Y. M. 3 ; Ren, X. X. 6 ; Liu, Y. X. 3 ; Liu, Z. Y. 5 ;
作者机构： 1.Guizhou Univ, Coll Agr, Guiyang 550025, Guizhou, Peoples R China
2.Guizhou Inst Biol, Guiyang 550009, Guizhou, Peoples R China
3.Guizhou Key Lab Agr Biotechnol, Guiyang 550006, Guizhou, Peoples R China
4.Guizhou Inst Biotechnol, Guiyang 550006, Guizhou, Peoples R China
5.Guizhou Acad Agr Sci, Guiyang 550006, Guizhou, Peoples R China
6.Guizhou Univ Engn Sci Bijie, Ecol Engn Coll, Bijie 551700, Guizhou, Peoples R China
关键词： Eurotium cristatum;Fungus;Metabolite;metabolite correlation;Metabolomic
期刊名称：MYCOSPHERE （ 影响因子：4.211； 五年影响因子：2.866 ）
ISSN： 2077-7000
年卷期： 2017 年 8 卷 10 期
页码：
收录情况： SCI
摘要： Eurotium cristatum is the main probiotic fungus involved in fermentation of Chinese Fuzhuan brick tea, and the amount of E. cristatum is an important indicator of tea quality. Sexual development of E. cristatum consists of three main stages, hypha and ascogonium (at 36 hours post-inoculation), cleistothecium formation (at 48 hours), and cleistothecium ripening (at 72 hours), and each stage exhibits a unique metabolite profile. In this study, developmental changes were analyzed by GC-MS based untargeted metabolomics. Ninety-nine metabolites involved in multiple biochemical pathways were identified. Principal component analysis separated developing E. cristatum into 36, 48 and 72 hour groups. Hierarchical cluster analyses showed that the relative contents of organic acids and amino acids peaked at 36 hours and decreased thereafter, while alcohol and carbohydrate levels peaked at 48-72 hours. Statistical analysis revealed 401 significant metabolite-metabolite correlations (Pearson's vertical bar r vertical bar>0.8 at a false discovery rate <= 0.05), of which 213 were positive and 188 negative. The early increases in organic acid and amino acid metabolites as well as certain phosphate and amine metabolites favor ascogonium formation. Conversely, increased alcohol and carbohydrate concentrations favor cleistothecium formation. These results provide a foundation for further exploration of the biochemical mechanism underlying sexual development in E. cristatum.
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