Identification of the Key Gene through Comparative Analysis of Lignification in and ZPX Bamboo Shoots during Cold Storage.

bamboo shoots, a species with rich nutritional value, are important in Southwest China. Lignin is an important factor affecting the postharvest flavor quality of bamboo shoots; however, the underlying mechanism of lignin deposition in bamboo shoots during cold storage is still not fully understood. In this study, the mutant with low lignin content at 3.11% and the cultivated variety ZPX at 4.47% were used as experimental materials. The lignin content of and ZPX, as well as the gene expression differences between them, were compared and analyzed during cold storage using transcriptomic and physiological methods. Our analysis revealed several key genes and found that plays a key role in the regulatory network of bamboo shoots during cold storage. Tobacco heterologous transformation experiments demonstrated that overexpression of significantly increases lignin content. This study provides a novel foundation for future research aimed at improving the postharvest quality and flavor of bamboo shoots through targeted genetic manipulation during cold storage.