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首页> 外文期刊>Plant Disease >Role of Polyphenol Oxidase, Peroxidase, Phenylalanine Ammonia Lyase, Chlorogenic Acid, and Total Soluble Phenols in Resistance of Potatoes to Soft Rot
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Role of Polyphenol Oxidase, Peroxidase, Phenylalanine Ammonia Lyase, Chlorogenic Acid, and Total Soluble Phenols in Resistance of Potatoes to Soft Rot

机译：多酚氧化酶，过氧化物酶，苯丙氨酸氨裂解酶，绿原酸和总可溶性酚在马铃薯抗软腐病中的作用

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Ngadze, E., Icishahayo, D., Coutinho, T. A., and van der Waals, J. E. 2012. Role of polyphenol oxidase, peroxidase, phenylalanine ammonia lyase, chlorogenic acid, and total soluble phenols in resistance of potatoes to soft rot. Plant Dis. 96:186-192. Pectobacterium atrosepticum, P carotovorum subsp. brasiliensis, and Dickeya spp. cause soft rot of potato (Solarium tuberosum) worldwide. Plants respond to bacterial invasion by activating defense responses associated with accumulation of several enzymes and inhibitors, which prevent pathogen infection. This study focused on the role of polyphenol oxidase (PPO), peroxidase (POD), phenylalanine ammonia lyase (PAL), chlorogenic acid, and total soluble phenols in imparting resistance to soft rot pathogens. Seven and II varieties grown by farmers in South Africa and Zimbabwe, respectively, were used in the study. The results showed significantly higher (P<0.001) enzyme activity of PPO and PAL as well as higher concentrations of chlorogenic acid and total soluble phenols in Vanderplank, Pentland Dell, M69/11, Romano, M59/20, and Mondial(Zw). PAL activity increased significantly with time in all varieties, and the highest activity was recorded 8 h after cutting. The resistance of the varieties was correlated with high PPO and PAL enzyme activity as well as increased concentrations of chlorogenic acid and total soluble phenols. PPO, POD, and PAL activities increased significantly in wounded and inoculated tubers. These findings show that PAL, PPO, POD, chlorogenic acid, and total soluble phenols play a role in imparting resistance to potato soft rot infection.
机译：Ngadze，E.，Icishahayo，D.，Coutinho，T. A.和van der Waals，J. E.2012。多酚氧化酶，过氧化物酶，苯丙氨酸氨裂解酶，绿原酸和总可溶性酚在马铃薯抗软腐病中的作用。植物病96：186-192。腐果芽孢杆菌，P carotovorum亚种。巴西利亚和迪卡（Dickeya spp。）在世界范围内引起马铃薯（Solarium tuberosum）的软腐病。植物通过激活与几种酶和抑制剂积累相关的防御反应来响应细菌入侵，这可以防止病原体感染。这项研究集中于多酚氧化酶（PPO），过氧化物酶（POD），苯丙氨酸氨裂合酶（PAL），绿原酸和总可溶性酚在赋予对软腐病原体抗性中的作用。这项研究分别使用了南非和津巴布韦农民种植的七个和第二个品种。结果表明，范德普兰克，彭特兰戴尔，M69 / 11，罗马诺，M59 / 20和Mondial（Zw）中PPO和PAL的酶活性显着更高（P <0.001），并且绿原酸和总可溶性酚的浓度更高。在所有品种中，PAL活性均随时间显着增加，切割后8 h记录到最高活性。该品种的抗性与高PPO和PAL酶活性以及绿原酸和总可溶性酚浓度增加相关。在受伤和接种的块茎中，PPO，POD和PAL活性显着增加。这些发现表明，PAL，PPO，POD，绿原酸和总可溶性酚在赋予马铃薯软腐病抗性中起作用。

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