|Table of Contents|

Regulating Effect of Exogenous Spermidine on Antioxidant Metabolism of Melon Seedlings Under Pb Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年04
Page:
42-46
Research Field:
Publishing date:

Info

Title:
Regulating Effect of Exogenous Spermidine on Antioxidant Metabolism of Melon Seedlings Under Pb Stress
Author(s):
SUN Tianguo; SUN Yubin
(College of Life Science and Agriculture Forestry,Qiqihaer University,Qiqihaer,Heilongjiang 161006)
Keywords:
spermidine; Pb stress; melon; oxidation resistance
PACS:
-
DOI:
10.11937/bfyy.20191921
Abstract:
In order to explore the mechanism that spermidine (Spd) improved melon seedlings resistance to Pb stress,‘Qitian No.1’ melon was used as the experimental materials，the effects of Spd with different concentrations on photosynthetic character and antioxidant metabolism of melon seedlings under Pb stress (10 mg·L-1) were studied.The results showed that contents of chlorophyll and soluble protein decreased,the activities of antioxidant enzymes SOD,POD,CAT decreased either.However,O·[TX-*4]2prodection rate,H2O2 and MDA contents increased under Pb stress.Exogenous Spd with different concentration increased the activity of antioxidant enzymes and photosynthetic parameters of melon seedling and decreased O·[TX-*4]2,H2O2 and MDA contents.The above results suggested that Spd improved the toxicity of melon seedlings with Pb stress,which at dose of 0.5 mmol·L-1 and 1.0 mmol·L-1 Spd were more significantly.

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Last Update: 2020-03-30