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学科主题: Environmental Sciences
题名: The role of radial oxygen loss and root anatomy on zinc uptake and tolerance in mangrove seedlings
作者: Cheng, H ; Liu, Y ; Tam, NFY ; Wang, X ; Li, SY ; Chen, GZ ; Ye, ZH
通讯作者: Issyzhh@mail.sysu.edu.cn
关键词: Radial oxygen loss ; Root anatomy ; SEM X-ray microanalysis ; Heavy metals ; Mangrove plants
刊名: ENVIRONMENTAL POLLUTION
发表日期: 2010-01-01
卷: 158, 期:5, 页:1189-1196
收录类别: sci
部门归属: [Cheng, H.; Wang, X.; Ye, Z. H.] Sun Yat Sen Univ, State Key Lab Biocontrol, Guangzhou 510006, Guangdong, Peoples R China; [Cheng, H.; Wang, X.; Ye, Z. H.] Sun Yat Sen Univ, Sch Life Sci, Guangzhou 510006, Guangdong, Peoples R China; [Liu, Y.] Chinese Acad Fishery Sci, Minist Agr, Key Lab Mariculture Ecol & Prod Qual & Safety, S China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China; [Tam, N. F. Y.] City Univ Hong Kong, Dept Biol & Chem, Hong Kong, Hong Kong, Peoples R China; [Li, S. Y.; Chen, G. Z.] Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China
项目归属: LED
摘要: Root anatomy, radial oxygen loss (ROL) and zinc (Zn) uptake and tolerance in mangrove plants were investigated using seedlings of Aegiceras corniculatum, Bruguiera gymnorrhiza and Rhizophora stylosa. The results revealed that B. gymnorrhiza, which possessed the 'tightest barrier' in ROL spatial patterns among the three species studied, took up the least Zn and showed the highest Zn tolerance. Furthermore, zinc significantly decreased the ROL of all three plants by inhibition of root permeability, which included an obvious thickening of outer cortex and significant increases of lignification in cell walls. The results of SEM X-ray microanalysis further confirmed that such an inducible, low permeability of roots was likely an adaptive strategy to metal stress by direct prevention of excessive Zn entering into the root. The present study proposes new evidence of structural adaptive strategy on metal tolerance by mangrove seedlings. (C) 2010 Elsevier Ltd. All rights reserved.
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/6301
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Recommended Citation:
Cheng, H; Liu, Y; Tam, NFY; Wang, X; Li, SY; Chen, GZ; Ye, ZH.The role of radial oxygen loss and root anatomy on zinc uptake and tolerance in mangrove seedlings,ENVIRONMENTAL POLLUTION,2010,158(5):1189-1196
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