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Analysis of lignin metabolism in water bamboo shoots during storage

文献类型： 外文期刊

作者： Yang, Baiqi 1 ; Fang, Xiangjun 1 ; Han, Yanchao 1 ; Liu, Ruiling 1 ; Chen, Hangjun 1 ; Gao, Haiyan 1 ;

作者机构： 1.Key Lab Postharvest Preservat & Proc Fruits & Veg, Hangzhou 310021, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Postharvest Handling Fruits, Hangzhou 310021, Peoples R China

3.Zhejiang Acad Agr Sci, Food Sci Inst, Hangzhou 310021, Peoples R China

关键词： Lignin composition; Lignification-related enzyme; Gene expression

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.751； 五年影响因子：7.001 ）

ISSN： 0925-5214

年卷期： 2022 年 192 卷

页码：

收录情况： SCI

摘要： Water bamboo shoots (WBS) are popular hydrophytic plant in China with a high nutritive value. However, WBS is susceptible to postharvest lignification. The firmness, lignin content, lignin composition, activity of lignin biosynthesis-related enzymes, and expression of lignin biosynthesis-related genes in WBS were determined after postharvest storage at 20 degrees C or 2 degrees C for 15 d or 63 d, respectively. The results indicated that lignin present in WBS was composed of G (vanillin and vanillic acid), H (p-hydroxybenzaldehyde and p-hydroxybenzoic acid), and S (syringaldehyde and syringic acid) monomers. During storage, the activities of phenylalanine ammonia-lyase, cinnamyl alcohol dehydrogenase, and peroxidase also increased. Moreover, the upregulated gene expression levels of lignin biosynthesis-related enzymes positively correlated with increasing lignin content, which were the key contributors to the lignification of WBS during storage. We observed that low temperatures delayed lignification by repressing the expression of lignification-related genes and suppressing the activity of lignin biosynthesis-related enzymes.

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