Fructans play important roles not only as a source of carbohydrate, but also as agents protecting high plants against abiotic stresses such as water deficit and low temperature.

• 果聚糖不仅是植物储存非结构性碳水化合物的形式之一，而且在干旱、低温等非生物胁迫中具有保护植物细胞免受伤害的作用。