Departamento de Horticultura, Universidad Autónoma Agraria Antonio Narro, Saltillo 25315, Mexico.
Cátedras CONACyT, Departamento de Horticultura, Universidad Autónoma Agraria Antonio Narro, Saltillo 25315, Mexico.
Molecules. 2018 Jan 16;23(1):178. doi: 10.3390/molecules23010178.
Chitosan is a natural polymer, which has been used in agriculture to stimulate crop growth. Furthermore, it has been used for the encapsulation of nanoparticles in order to obtain controlled release. In this work, the effect of chitosan-PVA and Cu nanoparticles (Cu NPs) absorbed on chitosan-PVA on growth, antioxidant capacity, mineral content, and saline stress in tomato plants was evaluated. The results show that treatments with chitosan-PVA increased tomato growth. Furthermore, chitosan-PVA increased the content of chlorophylls a and b, total chlorophylls, carotenoids, and superoxide dismutase. When chitosan-PVA was mixed with Cu NPs, the mechanism of enzymatic defense of tomato plants was activated. The chitosan-PVA and chitosan-PVA + Cu NPs increased the content of vitamin C and lycopene, respectively. The application of chitosan-PVA and Cu NPs might induce mechanisms of tolerance to salinity.
壳聚糖是一种天然聚合物，已被用于农业刺激作物生长。此外，它还被用于纳米粒子的封装，以获得可控释放。在这项工作中，研究了壳聚糖-PVA 和吸附在壳聚糖-PVA 上的铜纳米粒子 (Cu NPs) 对番茄植株生长、抗氧化能力、矿物质含量和盐胁迫的影响。结果表明，壳聚糖-PVA 处理可促进番茄生长。此外，壳聚糖-PVA 增加了叶绿素 a 和 b、总叶绿素、类胡萝卜素和超氧化物歧化酶的含量。当壳聚糖-PVA 与 Cu NPs 混合时，激活了番茄植物的酶防御机制。壳聚糖-PVA 和壳聚糖-PVA + Cu NPs 分别增加了维生素 C 和番茄红素的含量。壳聚糖-PVA 和 Cu NPs 的应用可能诱导了对盐胁迫的耐受机制。
