|Table of Contents|

Single and Combined Effects of Vanadium,Titanium and Cadmium on the Physiology and Biochemistry of Marchantia polymorpha L.

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年08
Page:
73-81
Research Field:
Publishing date:

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Title:
Single and Combined Effects of Vanadium,Titanium and Cadmium on the Physiology and Biochemistry of Marchantia polymorpha L.
Author(s):
DU Zexuan; WU Jingchen; YANG Ruhua; CHEN Yafei; WANG Li
(College of Life Sciences,Sichuan University,Chengdu,Sichuan 610064)
Keywords:
Marchantia polymorpha; vanadium (V); titanium (Ti) and cadmium (Cd); stress; physiological index
PACS:
-
DOI:
10.11937/bfyy.20183217
Abstract:
In this study,Marchantia polymorpha L.were dealt with independent vanadium (V) and titanium (Ti) and joint V,Ti and cadmium (Cd) by spraying metal solution under different time gradient.In order to explore the tolerance of M.polymorpha to single stress of V,Ti and V-Ti-Cd combined stress and its response mechanism.The results showed that the contents of V (808.00±26.46)μg?g-1 was higher than Ti (766.67±62.31)μg?g-1 in M.polymorpha and the physiological index changes was similar,when M.polymorpha was treated with single V or Ti.Compared with the control group,it appeared that soluble protein contents were reduced,soluble sugar contents were increased,the contents of proline (Pro) were decreased,malondialdehyde (MDA) contents were increased at first then cut down and were reached the top on the 12th day,superoxide dismutase (SOD) activity was increased at first then decreased and was increased again,catalase (CAT) activity and peroxidase (POD) activity was increased to the top on the 20th day.Furthermore,when M.polymorpha was threatened by V-Ti-Cd simultaneously,the maximum contents of Cd (1 179.00±103.12)μg?g-1 and the contents of V (243.00±27.87)μg?g-1 and Ti (349.33±55.05)μg?g-1 were restrained significantly.Pro contents were increased to the top on the 12th day then were decreased and increased again.MDA contents were increased,SOD activity was enhanced,CAT was activity enhanced at first then was decreased and enhanced again.POD activity was enhanced on the 4th day then reduced and stabilized.Compared with the single stress,the combined stress had more toxic effect on the M.polymorpha in a short time.These results could provide new ways for vegetation recovery in vanadium titano-magnetite region,as well as provide a theoretical basis for studying the tolerance of plants for multiple metal stresses.

References:

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Last Update: 2019-06-03