Department of Vegetable Crops, University of California, Davis, California 95616.
Plant Physiol. 1972 Feb;49(2):252-5. doi: 10.1104/pp.49.2.252.
Treatment of potato tubers (Solanum tuberosum L.) with ethylene gas causes a rapid rise in their respiration rate, reaching 5 to 10 times the rate of untreated tubers over 30 hours of treatment and then falling slowly. The response shows a lag of 8 hours, and more than 24 hours of exposure is required for maximum effect; the temperature optimum is near 25 C. In sensitivity to low concentrations and dependence on temperature, the phenomenon is similar to the effect of ethylene on the respiration of climacteric and nonclimacteric fruits. Treated potato tubers returned to air recover their sensitivity to ethylene more slowly than do nonclimacteric fruits (e.g., mature green oranges). It is proposed that the respiratory rise characteristic of ripening in climacteric fruits and of the wound response in plant tissues is induced by a rise in endogenous tissue ethylene.
用乙烯气体处理土豆块茎(Solanum tuberosum L.)会导致其呼吸速率迅速上升,在 30 小时的处理过程中,呼吸速率达到未处理块茎的 5 到 10 倍,然后缓慢下降。这种反应有 8 小时的滞后,需要超过 24 小时的暴露才能达到最大效果;最适温度接近 25°C。在对低浓度的敏感性和对温度的依赖性方面,这种现象类似于乙烯对呼吸作用的影响熟化和非熟化水果。处理过的土豆块茎回到空气中后,其对乙烯的敏感性恢复速度比非熟化水果(例如成熟的绿橙)慢。有人提出,呼吸作用的上升是由内源性组织乙烯的上升引起的,这一特征是在呼吸作用的熟化水果和植物组织的伤口反应中表现出来的。