Changes of structures and biosynthesis/hydrolysis-associated genes expression of glucans at different Volvariella volvacea maturity stages

文献类型： 外文期刊

第一作者： Shao, Ze-Yu

作者： Shao, Ze-Yu;Zan, Xin-Yi;Sun, Lei;Cui, Feng-Jie;Zhu, Hong-An;Sun, Wen-Jing;Liang, Ying-Ying;Fu, Xin;Jia, Wei;Zhang, Jing-Song;Cui, Feng-Jie;Sun, Wen-Jing;Zhao, Xiu

作者机构：

关键词： Volvariella volvacea; Maturity stage; Glucan; Structure; Glucan synthesis-associated enzyme; Transcription level

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：6.953； 五年影响因子：6.737 ）

ISSN： 0141-8130

年卷期： 2021 年 191 卷

页码：

收录情况： SCI

摘要： In the present study, effects of maturity stage on structural characteristics and biosynthesis/hydrolysis-associated genes expression of glucans from Volvariella volvacea fruit body were well investigated. Elongation and pileus expansion stages decreased total soluble carbohydrate and protein contents to 17.09 mg/g and 8.33 mg/g, and significantly accumulated the total amino acids contents to 32.37 mg/g. Yields of crude polysaccharides significantly increased to 8.12% at egg stage and decreased to 3.72% at pileus expansion stage. Purified VVP I-a and VVP I-b were proved to be alpha-glucans. The maturity process affected the monosaccharide compositions, decreased the molecular weights of VVP I-a and VVP I-b with decreased transcription levels of glucan biosynthesis-associated enzyme genes vvugp and vvgls and increased glucan hydrolysis-associated glucanase gene vvexg2 expression with no significant effects on backbone structures including glycosidic linkages and configu-rations. The findings would benefit for understanding change patterns of V. volvacea glucan structures and their biosynthesis/hydrolysis-associated genes expression at maturity stages.

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