University of Florida, Institute of Food and Agricultural Sciences, Agricultural Research and Education Center, Lake Alfred, Florida 33850.
Plant Physiol. 1981 Oct;68(4):854-6. doi: 10.1104/pp.68.4.854.
The effect of ethylene on chlorophyll degradation in the peel of Robinson tangerine (X Citrus reticulata Blanco) and calamondin (X Citrofortunellamitis [Blanco] Ingram and Moore) fruits was studied. The chlorophyll degrading system in the peel of these two citrus species was not self-sustaining but required ethylene to function. Chlorophyll degradation ceased immediately when fruit were removed from ethylene and held in ethylene-free air at 0.2 atmospheric pressure. However, at atmospheric pressure, chlorophyll degradation continued for 24 hours in the absence of exogenous ethylene. Although chlorophyllase levels were negatively correlated with chlorophyll content in the peel (r = -0.981; P < 0.01), the level of chlorophyllase activity did not change when fruit were removed from ethylene, even though chlorophyll degradation had stopped. From these observations, it was concluded that ethylene is necessary for chlorophyll degradation in the two species of citrus studied, but its primary role is not solely for the induction of chlorophyllase activity.
研究了乙烯对罗伯逊桔（X 桔皮中的叶绿素降解的影响Citrus reticulata Blanco) 和莱蒙汀莱蒙丁（X Citrofortunellamitis [Blanco] Ingram 和 Moore) 果实。这两种柑橘类水果果皮中的叶绿素降解系统不是自我维持的，而是需要乙烯才能发挥作用。当果实从乙烯中取出并在 0.2 大气压的无乙烯空气中放置时，叶绿素降解立即停止。然而，在大气压力下，即使没有外源乙烯，叶绿素降解也会在 24 小时内继续进行。尽管叶绿素酶水平与果皮中的叶绿素含量呈负相关（r = -0.981；P < 0.01），但当果实从乙烯中取出时，叶绿素酶活性水平并没有变化，尽管叶绿素降解已经停止。从这些观察结果可以得出结论，乙烯是两种研究柑橘品种中叶绿素降解所必需的，但它的主要作用不仅仅是诱导叶绿素酶活性。
