|Table of Contents|

Effect of Enhanced Ultraviolet-B Radiation on Protective Enzymes in Dendrobium officinale Kimura et Migo Seedling Leaves(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年05
Page:
170-173
Research Field:
Publishing date:

Info

Title:
Effect of Enhanced Ultraviolet-B Radiation on Protective Enzymes in Dendrobium officinale Kimura et Migo Seedling Leaves
Author(s):
MO Yun-cai; ZENG Ling-jie; FENG Hong-yao; HUANG Han
(College of Medicine，Guangdong Pharmaceutical University，Guangzhou，Guangdong 510006)
Keywords:
Dendrobium officinale Kimura et Migo; enhanced UV-B radiation; protective-enzyme activation; MDA
PACS:
-
DOI:
10.11937/bfyy.201505049
Abstract:
Taking ‘Yunnan Honggan’ which was a type of Dendrobium officinale Kimura et Migo as test material，the study was done to reveal the changes of protective-enzyme activation and MDA in Dendrobium officinale Kimura et Migo seedling leaves，exposing to three kinds radiations：ultraviolet-B radiation(UV-B)of 5.1 μW/cm2，10.3 μW/cm2 and 15.6 μW/cm2.The results showed that the activities of SOD in L1 treatment were higher than that of CK and with a small fluctuation.The overall trend of the SOD in L2 and L3 treatments were rising and then declining.The activities of POD of L1，L2 as well as L3 showed a rising and declining trend in turn.The activity of CAT in L1 treatment showed a result as below：at first increased slowly，then decreased gradually，and finally tended to be smooth and stable；the results in L1 and in L3 treatments were different from that in L1：firstly with a big fluctuation，and finally with an obvious decline.With radiated time going on，the contents of MDA in the leaves increased obviously，such as in L2 and in L3 treatments.However，comparing with CK，the content of MDA in L1 treatment had a small fluctuation.The analysis indicated that the accumulation of Reactive Oxygen Species(ROS) induced by UV-B radiation may influence the biosynthesis of antioxidant systems.

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Last Update: 2015-06-24