|Table of Contents|

Changes of Superoxide Dismutase Catalase Activity and Malondialdehyde Content in Leaves of Reaumuria soongorica in Ejina Desert

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年09
Page:
60-67
Research Field:
Publishing date:

Info

Title:
Changes of Superoxide Dismutase Catalase Activity and Malondialdehyde Content in Leaves of Reaumuria soongorica in Ejina Desert
Author(s):
GAO Tian; LIU Ruixiang; WANG Yixuan; MA Xin
(College of Ecology and Environmental Science,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010010)
Keywords:
Reaumuria soongorica; superoxide; catalase; malondialdehyde; soil moisture content
PACS:
-
DOI:
10.11937/bfyy.20202839
Abstract:
Taking the typical red sand (Reaumuria soongorica) community in Ejina desert as the research object,the change characteristics of CAT,SOD activities and MDA content in red sand and its influencing factors were analyzed,the influences of Ejina desert conditions on the growth and development of red sand were studied,in order to provide a reference for the protection and further research of wild red sand community.The results showed that,in a growing season of red sand,with the passage of time,SOD activity in leaves of red sand showed a decreasing trend,the highest activity was 6.65 U?g-1,MDA content showed an increasing trend,the content changed from 0.012 μmol?g-1FW to 0.046 μmol?g-1FW,CAT activity showed a trend of increasing at first and then decreasing,the lowest activity was 0.002 4 U?g?min-1.In two years,the activity of SOD and CAT in leaves of red sand were significantly positively correlated with air temperature (P<0.01),and negatively correlated with air relative humidity (P<0.01);the content of MDA was just the opposite,and negatively correlated with air temperature (P<0.01),and positively correlated with air relative humidity (P<0.01);the correlation between SWC of each soil layer showed that the activity of SOD and CAT in leaves of red sand were significantly positively correlated with air temperature (P<0.01),and negatively correlated with air relative humidity (P<0.01);SOD activity was negatively correlated with SWC (20-100 cm) (P<0.01),and negatively correlated with SWC (0-20 cm) (P<0.05);CAT activity was positively correlated with SWC (20-100 cm) (P<0.01);MDA content was positively correlated with SWC (0-20 cm) (P<0.01),and negatively correlated with SWC (40-60 cm) (P<0.01);20-60 cm (P<0.01).The activity of CAT,SOD and the content of MDA in leaves of red sand were most affected by the soil moisture content in 20-60 cm soil layer.

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Last Update: 2021-08-06