欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (22): 165-169.

所属专题： 园艺

• 农学 农业基础科学 • 上一篇    下一篇

鲜切生菜伤害信号的初步研究

马玉荣 Mikal Saltveit 王庆国   

  • 收稿日期:2010-04-19 修回日期:2010-06-16 出版日期:2010-11-20 发布日期:2010-11-20

Preliminary research on wound signal in fresh-cut Romaine lettuce

  • Received:2010-04-19 Revised:2010-06-16 Online:2010-11-20 Published:2010-11-20

PDF (PC)

975

摘要：

本文用简易的方法对鲜切Romaine生菜中伤害信号进行了研究。实验结果表明，切割后在其切割位点产生伤害信号物质，它能在很短的时间内传导至邻近未受伤组织中，并诱导一系列的生理反应，例如PAL（苯丙氨酸解氨酶）的合成，酚类物质的合成和累积，切割面的褐变等。己醇能显著的抑制伤害信号的传导，植物组织提取液对其抑制作用具有抵消作用。同时研究发现，伤害信号能通过溶液进行传导。生菜的伤害信号可能不是蛋白类物质。

关键词: 一代玉米螟, 一代玉米螟, 气象条件, 相关分析, 山东省

Abstract:

The wound signal in fresh-cut Romaine lettuce was studied in this paper. The result showed that wound signal was originated at the site of injury in lettuce tissue and propagated into adjacent tissue where it induced a number of physiological responses, such as the synthesis of phenylalanine ammonia lyase (PAL), the synthesis and accumulation of phenolic compounds and the browning of cutting surface. The wound signal transduction was significantly inhibited by hexanol. However, extract from lettuce and avocado overcame its inhibition which suggested that wound signal can be transduce in solutions. It also showed that the wound signal in lettuce may not belong to protein substance.