Silicon alleviates cadmium toxicity in Avicennia marina (Forsk.) Vierh. seedlings in relation to root anatomy and radial oxygen loss

被引：24

作者：

Zhang, Qiong ^{[1
,2
]}

Yan, Chongling ^{[1
]}

Liu, Jingchun ^{[1
]}

Lu, Haoliang ^{[1
]}

Wang, Wenyun ^{[1
]}

Du, Jingna ^{[1
]}

Duan, Hanhui ^{[1
]}

机构：

[1] Xiamen Univ, Sch Life Sci, Key Lab, Minist Educ Coastal & Wetland Ecosyst, Xiamen 361102, Fujian Province, Peoples R China

[2] Minnan Normal Univ, Dept Biol Sci & Biotechnol, Zhangzhou 363000, Fujian Province, Peoples R China

来源：

MARINE POLLUTION BULLETIN | 2013年 / 76卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Silicon; Cadmium; Avicennia marina; Root Anatomy; Radial oxygen loss; RICE ORYZA-SATIVA; ZEA-MAYS L; KANDELIA-OBOVATA S; WETLAND PLANTS; SUBCELLULAR-DISTRIBUTION; BRUGUIERA-GYMNORRHIZA; MEDIATED ALLEVIATION; ADVENTITIOUS ROOTS; SOLUTION CULTURE; CUCUMIS-SATIVUS;

D O I：

10.1016/j.marpolbul.2013.09.005

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effects of Si on growth, the anatomy of the roots, radial oxygen loss (ROL) and Fe/Mn plaque on the root surface were investigated in Avicennia marina (Forsk.) Vierh. seedlings under Cd stress. Si prompted the growth of seedlings and reduced the Cd concentration in the root, stem and leaf of A. marina. Si prompted the development of the apoplastic barrier in the roots, which may be related to the reduction of Cd uptake. The higher amount of ROL and Mn plaque on the root surface due to Si were also related to the promotion of Cd tolerance in A. marina seedlings. Therefore, it is concluded that the alteration of the anatomy of the roots, the increase of ROL and Mn plaque of A. marina seedlings play an important role in alleviation of Cd toxicity due to Si. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：187 / 193

页数：7

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