INHIBITION BY CALCIUM OF SENESCENCE OF DETACHED CUCUMBER COTYLEDONS - EFFECT ON ETHYLENE AND HYDROPEROXIDE PRODUCTION
INHIBITION BY CALCIUM OF SENESCENCE OF DETACHED CUCUMBER COTYLEDONS - EFFECT ON ETHYLENE AND HYDROPEROXIDE PRODUCTION
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DOI：
10.1104/pp.71.1.182
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发表时间：
1983-01-01
期刊：
影响因子：
7.4
通讯作者：
HARMAN, JE
中科院分区：
文献类型：
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作者：
FERGUSON, IB;WATKINS, CB;HARMAN, JE
以离体黄瓜（C. sativus L.）子叶在黑暗中漂浮在各种溶液上。与水中相比，在10-4 M CaCl 2中，子叶的叶绿素[Chl]损失和H2 O2产生减少，乙烯产生减少和延迟，并且没有发生CO2产生的爆发。Mg对子叶衰老的影响不大，而K刺激Chl损失，但不增加乙烯和CO2产生的H2 O2积累。这种减少衰老的速度由钙也可以通过增加切除前子叶中的内源性钙水平来实现，虽然减少是小于与钙在外部溶液中。此外，H2 O2的解决方案上，子叶漂浮刺激叶绿素分解，但对乙烯和CO2的影响是不一致的。
The effect of Ca on senescence was followed in detached cucumber (C. sativus L.) cotyledons floating on various solutions in the dark. Compared with those in water, cotyledons in 10-4 M CaCl2 exhibited reduced chlorophyll [Chl] loss and H2O2 production, reduced and delayed ethylene production, and did not undergo in burst in CO2 production. Mg had little effect on cotyledon senescence, whereas K stimulated Chl loss but did not increase H2O2 accumulation of ethylene and CO2 production. This reduction in the rate of senescence by Ca could also be achieved by increasing the endogenous levels of Ca in the cotyledons before excision, although the reduction was less than that with Ca in the external solution. The addition of H2O2 to the solutions on which cotyledons were floated stimulated Chl breakdown, but effects on ethylene and CO2 were not consistent.