The role of 1‐methylcyclopropene in lignification and expansin gene expression in peeled water bamboo shoot (Zizania caduciflora L.)
2011
Song, Lili | Gao, Haiyan | Chen, Wenxuan | Chen, Hangjun | Mao, Jinlin | Zhou, Yongjun | Duan, Xuewu | Joyce, Daryl C
BACKGROUND: Water bamboo shoot (WBS) (Zizania caduciflora L.) is a fleshy aquatic vegetable susceptible to lignification. In this study, effects of 1‐methylcyclopropene (1‐MCP) anti‐ethylene treatment on lignification of harvested peeled WBS were investigated. RESULTS: Peeled shoots were treated with 0.5 µL L−1 1‐MCP for 20 h at 20 °C and then stored at 20 °C for up to 9 days. Sensory quality, lignin content and activities of the lignification‐associated enzymes peroxidase (POD) and phenylalanine ammonia lyase (PAL) were evaluated. Expression of expansin (ZcExp) was also assessed. 1‐MCP application maintained better sensory quality and inhibited the increase in lignin content. Lessened lignification was associated with reduced activities of POD and PAL. Moreover, 1‐MCP‐treated shoots showed lower expression of the ZcExp gene. CONCLUSION: 1‐MCP pretreatment suppressed the synthesis of lignin and thereby delayed lignification in peeled WBS.
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