Departament de Biologia Vegetal, Universitat de Barcelona, Facultat de Biologia, Avinguda Diagonal 643, 08028 Barcelona, Spain.
Departament de Biologia Vegetal, Universitat de Barcelona, Facultat de Biologia, Avinguda Diagonal 643, 08028 Barcelona, Spain.
Food Chem. 2016 Jul 15;203:216-223. doi: 10.1016/j.foodchem.2016.02.046. Epub 2016 Feb 6.
Abscisic acid (ABA) is a plant growth regulator with roles in senescence, fruit ripening and environmental stress responses. ABA and pyrabactin (a non-photosensitive ABA agonist) effects on red raspberry (Rubus idaeus L.) fruit development (including ripening) were studied, with a focus on vitamin and antioxidant composition. Application of ABA and/or pyrabactin just after fruit set did not affect the temporal pattern of fruit development and ripening; neither provitamin A (carotenoids) nor vitamin E contents were modified. In contrast, ABA and pyrabactin altered the vitamin C redox state at early stages of fruit development and more than doubled vitamin C contents at the end of fruit ripening. These were partially explained by changes in ascorbate oxidation and recycling. Therefore, ABA and pyrabactin applications may be used to increase vitamin C content of ripe fruits, increasing fruit quality and value. However, treatments containing pyrabactin-combined with ABA or alone-diminished protein content, thus partially limiting its potential applicability.
脱落酸（ABA）是一种植物生长调节剂，在衰老、果实成熟和环境胁迫反应中起作用。本研究探讨了 ABA 和吡效隆（一种非光敏感的 ABA 激动剂）对红树莓（Rubus idaeus L.）果实发育（包括成熟）的影响，重点研究了维生素和抗氧化剂的组成。果实着生后立即施用 ABA 和/或吡效隆并不影响果实发育和成熟的时间模式；类胡萝卜素（维生素 A 原）和维生素 E 含量均未改变。相反，ABA 和吡效隆改变了果实发育早期维生素 C 的氧化还原状态，并在果实成熟末期使维生素 C 含量增加了一倍以上。这部分可以通过抗坏血酸的氧化和再循环的变化来解释。因此，ABA 和吡效隆的应用可以用来增加成熟果实中维生素 C 的含量，提高果实的品质和价值。然而，含有吡效隆的处理（与 ABA 联合或单独使用）降低了蛋白质含量，因此在一定程度上限制了其潜在的应用。
