Peroxidases and photosynthetic pigments in susceptible potato infected with potato virus YNTN
Peroxidases and photosynthetic pigments in susceptible potato infected with potato virus YNTN
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DOI：
10.1016/s0981-9428(01)01303-1
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发表时间：
2001-10-01
影响因子：
6.5
通讯作者：
Kovac, M
中科院分区：
文献类型：
--
作者：
Milavec, M;Ravnikar, M;Kovac, M
研究1.11.1.7（Solanum tuberosum L.）CV. Igor，在由马铃薯病毒Y-NTN感染引起的局部病变发展时。与完整的植物相比，模拟接种健康植物的汁液诱导过氧化物酶活性和光合色素代谢的变化，在大多数情况下，可以区分由病毒感染引起的变化。叶绿素含量和可溶性和离子结合的过氧化物酶活性之间呈负相关。这种活性增加，而共价结合的过氧化物酶减少，甚至在绿色叶感染的植物是明显不变的，以及在绿色叶与局部病变。较低的叶绿素含量，和较高的类胡萝卜素叶绿素比在完整的和模拟接种的控制-衰老的迹象-观察到在叶片与局部病变和感染植物的黄叶。在完整的，模拟接种，和感染的植物中的测量参数的差异表明，由病毒感染诱导的过程不同于由模拟接种诱导的过程，并且病毒诱导的衰老显然与自然衰老不同。(C)2001年版科学与医学Elsevier SAS。
The aim of this work was to investigate the activity of soluble, ionically- and covalently-bound peroxidases (EC 1.11.1.7), the protein content, and the photosynthetic pigment metabolism in the potato (Solanum tuberosum L.) cv. Igor, at the time of local lesion development resulting from infection with potato virus Y-NTN. In comparison to intact plants, mock inoculation with the sap of healthy plants induced changes in peroxidase activity and metabolism of photosynthetic pigments which could, in most cases, be distinguished from the changes induced by virus infection. An inverse correlation was observed between chlorophyll content and the activity of soluble and ionically-bound peroxidases. This activity increased while that of covalently-bound peroxidase decreased, even in green leaves of infected plants which were visibly unchanged, as well as in green leaves with local lesions. Lower chlorophyll content, and higher carotenoid to chlorophyll ratio than those in intact and mock-inoculated controls - signs of senescence - were observed in leaves with local lesions and in yellow leaves of infected plants. Differences in measured parameters in intact, mock-inoculated, and infected plants showed that processes induced by virus infection differ from those induced by mock inoculation, and that viral induced senescence is clearly not the same as natural senescence. (C) 2001 editions scientifiques et medicales Elsevier SAS.