Integrative transcriptomics and metabolomics reveal the possible lignification mechanism of Lei bamboo shoots during ambient temperature storage
文献类型： 外文期刊
作者： Chen, Yanan 1 ; Kong, Xiaoxue 1 ; Yu, Yuansuan 2 ; Yao, Wen 1 ; Shen, Hui 2 ; Hu, Tenggen 2 ; Guo, Yuxing 1 ; Luo, Haibo 1 ; Yu, Lijuan 2 ;
作者机构： 1.Nanjing Normal Univ, Sch Food Sci & Pharmaceut Engn, Nanjing 210023, Peoples R China
2.Yunnan Acad Agr Sci, Agroprod Proc Res Inst, Kunming 650221, Peoples R China
3.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangdong Key Lab Agr Prod Proc, Key Lab Funct Foods,Minist Agr & Rural Affairs, Guangzhou, Peoples R China
关键词： Genes; lignin biosynthesis; metabolites; pathway; shelf life
期刊名称：FOOD QUALITY AND SAFETY （ 影响因子：4.4； 五年影响因子：4.8 ）
ISSN： 2399-1399
年卷期： 2025 年 9 卷
页码：
收录情况： SCI
摘要： Lignification is a typical senescence characteristic of postharvest Lei bamboo (Phyllostachys violascens) shoots during storage, which greatly limits its edible value and shelf life. In this study, the underlying molecular mechanism of lignification in bamboo shoots during storage at 20 +/- 4 degrees C was elucidated using quality and physiochemical indices, as well as integrated transcriptomics and metabolomics analyses. The results revealed increased weight loss, browning, cellulose, and lignin contents of bamboo shoots during storage. Phenylalanine ammonia-lyase activity peaked at 3 d, while 4-coumarate coenzyme A ligase (4CL) and peroxidase (POD) activity increased continuously. Cinnamyl alcohol dehydrogenase activity reached its lowest point on day 3 but recovered to a level close to that of day 0 by day 6. Combined transcriptomics and metabolomics analyses identified seven lignification-related genes (PvC4H-1, Pv4CL-1, PvCAD-1, PvHCT-1, PvCCoAOMT-1, PvF5H-1, and PvF5H-2) and three metabolites (ferulic acid, (E)-ferulic acid, and p-coumaroyl quinic acid) that may be closely associated with lignin biosynthesis. We speculate that the lignin present in Lei bamboo shoots is mainly guaiacyl (G)-lignin and syringyl (S)-lignin. Our findings provide new insight into the lignification mechanism in postharvest bamboo shoots during storage at ambient temperature.
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