CAJ | 학술논문

综述了花色苷提高植物耐旱性的可能生理机制。干旱胁迫可诱导植物细胞合成和积累花色苷。花色苷的光化学性质、亚细胞积累位点及其在植物器官、组织中的空间分布决定了花色苷能强化植物的耐旱性，其生理机制可能涉及3个方面，即：花色苷本身及其螯合的金属离子可直接通过充当植物细胞的渗透调节物质而优化细胞的渗透调节能力；恰当空间定位的花色苷能减轻植物在干旱胁迫下的光抑制、花色苷可有效维持并强化植物细胞在干旱条件下的活性氧清除能力。其中，花色苷提高植物细胞在干旱胁迫下的抗氧化能力可能是花色苷强化植物耐旱性的主要原因。该研究可为具花色苷合成和积累能力植物的抗旱机理探究和抗旱品种的培育提供参考。
종술료화색감제고식물내한성적가능생리궤제。간한협박가유도식물세포합성화적루화색감。화색감적광화학성질、아세포적루위점급기재식물기관、조직중적공간분포결정료화색감능강화식물적내한성，기생리궤제가능섭급3개방면，즉：화색감본신급기오합적금속리자가직접통과충당식물세포적삼투조절물질이우화세포적삼투조절능력；흡당공간정위적화색감능감경식물재간한협박하적광억제、화색감가유효유지병강화식물세포재간한조건하적활성양청제능력。기중，화색감제고식물세포재간한협박하적항양화능력가능시화색감강화식물내한성적주요원인。해연구가위구화색감합성화적루능력식물적항한궤리탐구화항한품충적배육제공삼고。
This paper summarized the possible physiological mechanism by which anthocyanins strengthen the tolerance of plants to drought. Drought stress can in-duce plant cel s to synthesize and accumulate anthocyanins. The photochemical properties, subcel ular accumulation sites and spatial distributions in plant organs and tissues of anthocyanins determine their function of strengthening plant tolerance, which is realized by three possible physiological mechanisms: (1) anthocyanins and their chelated metal ions can optimize the osmoregulation ability of the plant cel s by directly acting as the osmoregulation substances of the cel s, (2) anthocyanins with suitable spatial locations can reduce the photoinhibition of the plants under drought stresses, (3) anthocyanins can effectively maintain and improve the active oxygen-scavenging capacity of the plant cel s under drought conditions. Therein, that the anthocyanins enhance the antioxidant capacity of the plant cel s under drought stresses is probably the main reason for the anthocyanins to strengthen the drought tolerance of plants. This review could provide a reference for the mechanism re-search of the drought resistance and the breeding of the drought-resistant cultivars for the plants holding the ability to synthesize and accumulate anthocyanins.