锌缺乏对番茄幼苗光合色素和过氧化物酶活性的影响

T. Kösesakal, M. Ünal
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引用次数: 37

摘要

锌(Zn)缺乏症发生在不同的气候区域,几乎在所有国家。锌缺乏症是植物中常见的微量营养素缺乏症,导致作物产量严重下降。本试验研究了锌缺乏对番茄幼苗生长早期色素含量和过氧化物酶活性的影响。为此,使用含锌或不含锌的Hoagland溶液(ZnCl 2)作为生长培养基,以确定缺锌可能产生的影响。为了阐明锌缺乏的生理后果;测定了8日龄植株根、下胚轴和子叶中花青素、类胡萝卜素、叶绿素含量和过氧化物酶活性。锌缺乏促进了番茄幼苗下胚轴和子叶组织花青素和类胡萝卜素的积累。此外,锌缺乏增强了番茄幼苗过氧化物酶活性,尤其是根和下胚轴组织。
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Role of Zinc Deficiency in Photosynthetic Pigments and Peroxidase Activity of Tomato Seedlings
Zinc (Zn) deficiency is occurring in different climate regions and almost in all countries. Zinc deficiency is a common micronutrient deficiency in plants and causes severe reductions in crop production. In this study the effect of zinc deficiency on pigment content and peroxidase activity in early growth phase of tomato seedlings was investigated. For this purpose, Hoagland solutions with or without zinc (ZnCl 2 ) were used as growth medium to determine the possible effects of zinc deficiency. In order to elucidate the physiological consequences of zinc deficiency; anthocyanin, carotenoid, and chlorophyll content and peroxidase enzyme activity were measured in roots, hypocotyls, and cotyledons of 8 day-old plants. Zn deficiency promoted anthocyanin and carotenoid accumulation in hypocotyl and cotyledon tissues of tomato seedlings. Furthermore, Zn deficiency enhanced peroxidase activity especially in the root and hypocotyl tissues of tomato seedlings.
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