Abstract

Raffinose family oligosaccharides (RFOs), the α-galactosyl derivatives of sucrose, are nearly ubiquitous in Plantae, and they have been demonstrated to play pivotal roles in regulating plant responses to various abiotic stresses. RFOs accumulate to high levels in plant kernels/fruits or vegetative parts and are commonly associated with storability and desiccation or cold tolerance. Recent studies have also revealed the regulatory roles of RFOs in seed germination, plant development, and biotic stress resistance. Here, we provide an overview of the metabolism, transport, and evolution of RFOs as well as their physiological importance in plants. Recent research highlights the general importance of RFOs in plant development and stress response.

摘要

棉子糖家族寡糖 (RFO) 是蔗糖的 α-半乳糖基衍生物，在植物中几乎无处不在，并且已被证明在调节植物对各种非生物胁迫的反应中起关键作用。RFO 在植物籽粒/果实或营养部分中积累到高水平，通常与耐储存性、干燥或耐寒性有关。最近的研究还揭示了 RFO 在种子萌发、植物发育和生物胁迫抗性中的调节作用。在这里，我们概述了 RFO 的代谢、运输和进化，以及它们在植物中的生理重要性。最近的研究强调了 RFO 在植物发育和应激反应中的普遍重要性。