›› 2018, Vol. 30 ›› Issue (6): 970-977.DOI: 10.3969/j.issn.1004-1524.2018.06.12

• Horticultural Science • Previous Articles     Next Articles

Effects of salt stress on anthocyanin content and activities of antioxidant enzymes in leaves of Photinia frasery

LIN Yicheng, FU Qinglin, GUO Bin*, LIU Chen, DING Nengfei   

  1. Institute of Environment, Resources, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2018-02-26 Online:2018-06-20 Published:2018-07-02

Abstract: In the present study, a pot experiment with Photinia frasery was conducted to examine NaCl addition (0, 0.1%, 0.2% 0.3%, 0.4%) on fresh weight of aboveground parts, plant height increase, plant growth, Na and K concentration, electrolyte leakage, relative water content, contents of proline, H2O2, malondialdehyde (MDA), anthocyanin and activities of the enzymes related to antioxidant system of plant leaves. It was shown that the growth of Photinia frasery was inhibited when NaCl addition amount was 0.2% or higher. Na and proline content, electrolyte leakage were significantly (P<0.05) increased, while K+/Na+ and relative water content were significantly (P<0.05) decreased. Salt stress induced oxidative stress of leaves. The H2O2 and MDA contents were significantly (P<0.05) increased by 162% and 128% in new leaves, and by 114% and 33% in old leaves, respectively. For new leaves, activities of SOD and CAT were significantly (P<0.05) enhanced, while POD activity and anthocyanin contents were significantly (P<0.05) decreased as the salt stress increased. However, activities of SOD and CAT were significantly (P<0.05) decreased, while POD activity and anthocyanin contents were significantly (P<0.05) increased as the salt stress increased in old leaves. Thus, it could be concluded that anthocyanin was an important antioxidant molecular of Photinia frasery, which partially replaced the antioxidant roles of CAT under salt stress.

Key words: anthocyanin, antioxidant enzyme, Photinia frasery, salt stress

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