Effects of growth under different light spectra on the subsequent high light tolerance in rose plants

文献类型： 外文期刊

第一作者： Bayat, Leyla

作者： Bayat, Leyla;Arab, Mostafa;Aliniaeifard, Sasan;Seif, Mehdi;Lastochkina, Oksana;Li, Tao;Lastochkina, Oksana;Lastochkina, Oksana

作者机构：

关键词： Antioxidant enzymes; high light; light spectrum; photosynthesis; pigments

期刊名称：AOB PLANTS （ 影响因子：3.276； 五年影响因子：3.496 ）

ISSN： 2041-2851

年卷期： 2018 年 10 卷 5 期

页码：

收录情况： SCI

摘要： Photosynthesis is defined as a light-dependent process; however, it is negatively influenced by high light (HL) intensities. To investigate whether the memory of growth under monochromatic or combinational lights can influence plant responses to HL, rose plants were grown under different light spectra [including red (R), blue (B), 70:30 % red:blue (RB) and white (W)] and were exposed to HL (1500 mu mot m(-2) s(-1)) for 12 h. Polyphasic chlorophyll a fluorescence (OJIP) transients revealed that although monochromatic R- and B-grown plants performed well under control conditions, the functionality of their electron transport system was more sensitive to HL than that of the RB- and W-grown plants. Before exposure to HL, the highest anthocyanin concentration was observed in R- and B-grown plants, while exposure to HL reduced anthocyanin concentration in both R- and B-grown plants. Ascorbate peroxidase and catalase activities decreased, while superoxide dismutase activity was increased after exposure to HL. This caused an increase in H2O2 concentration and malondialdehyde content following HL exposure. Soluble carbohydrates were decreased by exposure to HL, and this decrease was more emphasized in R- and B-grown plants. In conclusion, growing plants under monochromatic light reduced the plants ability to cope with HL stress.

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