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'Chitin-specific' peroxidases in plants

机译:植物中的“几丁质特异性”过氧化物酶

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The activity of various plant peroxidases and the ability of their individual isoforms to bind chitin was studied. Some increase in peroxidase activity was observed in crude extracts in the presence of chitin. Activated peroxidases of some species fell in the fraction not sorbed on chitin and those of other species can bind chitin. Only anionic isoperoxidases from oat (Avena sativa), rice (Oryza sativa), horseradish (Armoracia rusticana), graden radish (Raphanus sativus var. radicula), peanut (Arachis hypogaea), and tobacco (Nicotiana tabacum Link et Otto) were sorbed on chitin. Both anionic acid cationic isoforms from pea (Pisum sativum), galega (Galega orientalis), cucumber (Cucumis sativus), and zucchini (Cucurbita pepo L) were sorbed on chitin. Peroxidase activation under the influence of chitin was correlated to the processes that occur during hypersensitive reaction and lignification of sites, in which pathogenic fungus penetrates into a plant. The role of chitin-specific isoperoxidases in inhibition of fungal growth and connection of this phenomenon with structural characteristics of isoperoxidases are also discussed.
机译:研究了各种植物过氧化物酶的活性以及它们各自的同工型与几丁质结合的能力。在几丁质存在下,在粗提取物中观察到过氧化物酶活性有所增加。一些物种的活化过氧化物酶下降到几丁质未吸附的部分,而其他物种的那些可以结合几丁质。仅吸附了燕麦(Avena sativa),大米(Oryza sativa),辣根(Armoracia Rustana),梯度萝卜(Raphanus sativus var.radicula),花生(Arachis hypogaea)和烟草(Nicotiana tabacum Link et Otto)的阴离子过氧化物酶。几丁质。豌豆(Pisum sativum),galega(Galega Orientalis),黄瓜(Cucumis sativus)和西葫芦(Cucurbita pepo L)的两种阴离子阳离子同工型都吸附在甲壳质上。几丁质的影响下的过氧化物酶活化与超敏反应和部位木质化过程中发生的过程有关,在这些过程中病原性真菌渗透到植物中。还讨论了几丁质特异性异过氧化物酶在抑制真菌生长中的作用以及该现象与异过氧化物酶的结构特征的联系。

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