原花青素(PA)是天然的黄烷-3-醇聚合物,有助于在生物和非生物胁迫下保护植物,有益于人类健康,以及对食品的苦涩。它们也是碳封存以缓解气候变化的潜在目标。近年来,从模式物种到商业作物,研究已经接近阐明通量控制和通道,亚基生物合成和聚合,运输机制,以及参与植物PA代谢的调控网络。这篇综述通过最近的发现扩展了传统的理解,这些发现提供了新的见解,以解决挥之不去的问题和操纵植物PA性状的重点策略。
Proanthocyanidins (PAs) are natural flavan-3-ol polymers that contribute protection to plants under biotic and abiotic stress, benefits to human health, and bitterness and astringency to food products. They are also potential targets for carbon sequestration for climate mitigation. In recent years, from model species to commercial crops, research has moved closer to elucidating the flux control and channeling, subunit biosynthesis and polymerization, transport mechanisms, and regulatory networks involved in plant PA metabolism. This review extends the conventional understanding with recent findings that provide new insights to address lingering questions and focus strategies for manipulating PA traits in plants.