CORRELATION BETWEEN ORNITHINE DECARBOXYLASE AND PUTRESCINE IN TOMATO PLANTS INFECTED BY CITRUS-EXOCORTIS VIROID OR TREATED WITH ETHEPHON
CORRELATION BETWEEN ORNITHINE DECARBOXYLASE AND PUTRESCINE IN TOMATO PLANTS INFECTED BY CITRUS-EXOCORTIS VIROID OR TREATED WITH ETHEPHON
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DOI：
10.1104/pp.102.3.933
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发表时间：
1993-07-01
期刊：
影响因子：
7.4
通讯作者：
CONEJERO, V
中科院分区：
文献类型：
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作者：
BELLES, JM;PEREZAMADOR, MA;CONEJERO, V
我们研究了精氨酸脱羧酶（ADC，EC 4.1.1.19）和鸟氨酸脱羧酶（ODC，EC 4.1.1.17）活性以及结合多胺的水平，以解释柑橘外皮质类病毒（CEVd）和乙烯利处理番茄（Lycopersicon esculentum Mill.cv Rutgers）引起的游离腐胺水平的降低。植物（J.M. Belles、J. Carbonell、V. Conejero [1991] Plant Physiol 96：1053-1059）。这种降低与 CEVd 感染或乙烯利处理植物中 ODC 活性的降低相关； ADC 活性没有改变。 CEVd感染对多胺结合物没有影响；乙烯利导致腐胺结合物减少。银离子对乙烯作用的干扰阻止了ODC活性以及游离和结合腐胺的降低。这表明 CEVd 感染和乙烯利处理后腐胺水平的变化是通过 ODC 活性调节的，并且不涉及缀合。
We have investigated the arginine decarboxylase (ADC, EC 4.1.1.19) and ornithine decarboxylase (ODC, EC 4.1.1.17) activities and the levels of conjugated polyamines to explain the decrease of free putrescine level caused by citrus exocortis viroid (CEVd) and ethephon treatment in tomato (Lycopersicon esculentum Mill. cv Rutgers) plants (J.M. Belles, J. Carbonell, V. Conejero [1991] Plant Physiol 96: 1053-1059). This decrease correlates with a decrease in ODC activity in CEVd-infected or ethephon-treated plants; ADC activity was not altered. CEVd infection had no effect on polyamine conjugates; and ethephon produced a decrease in putrescine conjugates. Interference with ethylene action by silver ions prevented the decrease in ODC activity and in free and conjugated putrescine. It is suggested that changes in putrescine level after CEVd infection and ethephon treatment are regulated via ODC activity and that conjugation is not involved.