Lignification and Gene Expression Pattern in Postharvest Moso Bamboo Shoots
2025
Xujie Huang | Yaling Zhang | Nianjun Huang | Yonglong Li | Fen Yu | Wengen Zhang | Chunce Guo
The bamboo shoot is a crucial component of bamboo forest economy. Previous studies have demonstrated that rapid lignification occurs during the postharvest storage of bamboo shoots. However, the mechanism underlying rapid lignification after bamboo shoot harvesting remains unclear. To explore this phenomenon in Moso bamboo (Phyllostachys edulis (Carriè:re) J. Houz.) shoots, we employed morphological, cytological, lignin content determination, and transcriptomic analysis methods. Our results indicated that the optimal consumption period is within 12&ndash:24 h postharvest. We identified 19,038 differentially expressed genes (DEGs), with the majority enriched in pathways related to stress response, photosynthesis, and the biosynthesis of phenylalanine, abscisic acid, and jasmonic acid (JA). Additionally, copy number analysis of ten enzyme-coding genes involved in lignin synthesis revealed the regulatory network of lignin synthesis following shoot harvesting. The study offers insights into the rapid lignification process in bamboo shoots postharvest, potentially regulated by stress responses and JA. Feasible preservation methods were also explored to extend the storage duration at room temperature.
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