Plants contain light signaling systems and undergo metabolic perturbation and reprogramming under light stress in order to adapt to environmental changes. Flavonoids are one of the largest classes of natural phytochemical compounds having several biological functions conferring stress defense to plants and health benefits in animal diets. A recent study of phenylacylated-flavonoids (also called hydroxycinnamoylated-flavonoids) of natural accessions of Arabidopsis suggested that phenylacylation of flavonoids relates to selection under different natural light conditions. Phenylacylated-flavonoids which are decorated with hydroxycinnamoyl units, namely cinnamoyl, 4-coumaroyl, caffeoyl, feruloyl and sinapoyl moieties, are widely distributed in the plant kingdom. Currently, more than 400 phenylacylated flavonoids have been reported. Phenylacylation renders enhanced phytochemical functions such as ultraviolet-absorbance and antioxidant activity, although, the physiological role of phenylacylation of flavonoids in plants is largely unknown. In this review, we provide an overview of the occurrence and natural diversity of phenylacylated-flavonoids as well as postulating their biological functions both in planta and with respect to biological activity following their consumption.

中文翻译：

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苯酰化黄酮类化合物的天然多样性及其在胁迫条件下的植物功能。


植物含有光信号系统，并在光胁迫下经历代谢扰动和重新编程，以适应环境变化。类黄酮是最大类别的天然植物化学化合物之一，具有多种生物功能，可赋予植物应激防御能力并有益于动物饮食的健康。最近对拟南芥天然种质苯酰化黄酮（也称为羟基肉桂酰化黄酮）的研究表明，黄酮类化合物的苯酰化与不同自然光条件下的选择有关。以羟基肉桂酰基单元修饰的苯酰化黄酮类化合物，即肉桂酰基、4-香豆酰基、咖啡酰基、阿魏酰基和芥子酰基部分，广泛分布于植物界。目前，已报道的苯酰化黄酮类化合物有400多种。苯酰化可增强植物化学功能，例如紫外线吸收和抗氧化活性，尽管黄酮类化合物苯酰化在植物中的生理作用在很大程度上尚不清楚。在这篇综述中，我们概述了苯酰化黄酮类化合物的存在和自然多样性，并假设了它们在植物中的生物功能以及食用后的生物活性。