Catecholamines are biogenic aromatic amines common among both animals and plants. In animals, they are synthesized via tyrosine hydroxylation, while both hydroxylation or decarboxylation of tyrosine are possible in plants, depending on the species, though no tyrosine hydroxylase—a counterpart of the animal enzyme—has been identified yet. It is known that in potato plants, it is the decarboxylation of tyrosine that leads to catecholamine production. In this paper, we present the effects of the induction of an alternative route of catecholamine production by introducing the tyrosine hydroxylase gene from rat. We demonstrate that an animal system can be used by the plant. However, it does not function to synthesize catecholamines. Instead, it leads to elevated reactive oxygen species content and a constant stress condition in the plant, which responds with elevated antioxidant levels and improved resistance to infection.

中文翻译：

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大鼠酪氨酸羟化酶基因的表达导致马铃薯植物的氧化应激。

儿茶酚胺是动物和植物中常见的生物芳香胺。在动物中，它们是通过酪氨酸羟基化合成的，而酪氨酸的羟基化或脱羧作用在植物中都是可能的，具体取决于物种，但尚未发现酪氨酸羟化酶（动物酶的对应物）。众所周知，在马铃薯植物中，酪氨酸的脱羧作用导致儿茶酚胺的产生。在本文中，我们介绍了通过引入大鼠酪氨酸羟化酶基因诱导儿茶酚胺生产的替代途径的效果。我们证明植物可以使用动物系统。但是，它不具有合成儿茶酚胺的功能。相反，它会导致植物中活性氧含量升高和持续的压力条件，