Metal (Pb, Zn and Cu) uptake and tolerance by mangroves in relation to root anatomy and lignification/suberization
文献类型：期刊论文
| 作者 | Cheng, H ; Jiang, ZY ; Liu, Y ; Ye, ZH ; Wu, ML ; Sun, CC ; Sun, FL ; Fei, J ; Wang, YS |
| 刊名 | TREE PHYSIOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 34期号:6页码:646-656 |
| 关键词 | exodermis heavy metals mangrove plants |
| ISSN号 | 0829-318X |
| 通讯作者 | yswang@scsio.ac.cn |
| 中文摘要 | Metal pollution has been widely reported in mangrove wetlands; however, the mechanisms involved in metal detoxification by mangroves are still poorly understood. This study aimed to investigate the possible function of root anatomy and lignification/suberization on metal uptake and tolerance in seedlings of six species of mangroves. The results revealed that the three rhizophoraceous species (Bruguiera gymnorrhiza (L.) Poir, Kandelia obovata Sheue, Liu & Yong and Rhizophora stylosa Griff) consistently exhibited higher metal tolerances than the three pioneer species (Aegiceras corniculatum (Linn.) Blanco, Acanthus ilicifolius L. and Avicennia marina (Forsk.) Viern.). Moreover, metal-tolerant species often exhibited a thick exodermis with high lignification and suberization. The tolerance indices of the mangroves were found to be positively correlated with the amounts of lignin and suberin deposition within the exodermal cell walls. The observed metal uptake by the excised roots further illustrated that a lignified/suberized exodermis directly delayed the entry of metals into the roots, and thereby contributed to a higher tolerance to heavy metals. In summary, the present study proposes a barrier property of the lignified/suberized exodermis in dealing with the stresses of heavy metals, such that the mangroves which possessed more extensive lignification/suberization within the exodermis appeared to exhibit higher metal tolerance. |
| 学科主题 | Forestry |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [41106103, 41076070, 41176101]; specialized Research Fund for the Doctoral Program of Higher Education of China [20100171110035]; Fund of Key Laboratory for Exploitation & Utilization of Marine Fisheries Resource in South China Sea, Ministry of Agriculture [LSF2013-5]; National Science & Technology Pillar Program in the Eleventh Five-year Plan Period [2012BAC07B0402] |
| 原文出处 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000339722900009 |
| 公开日期 | 2014-12-11 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/10544]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 推荐引用方式 GB/T 7714 | Cheng, H,Jiang, ZY,Liu, Y,et al. Metal (Pb, Zn and Cu) uptake and tolerance by mangroves in relation to root anatomy and lignification/suberization[J]. TREE PHYSIOLOGY,2014,34(6):646-656. |
| APA | Cheng, H.,Jiang, ZY.,Liu, Y.,Ye, ZH.,Wu, ML.,...&Wang, YS.(2014).Metal (Pb, Zn and Cu) uptake and tolerance by mangroves in relation to root anatomy and lignification/suberization.TREE PHYSIOLOGY,34(6),646-656. |
| MLA | Cheng, H,et al."Metal (Pb, Zn and Cu) uptake and tolerance by mangroves in relation to root anatomy and lignification/suberization".TREE PHYSIOLOGY 34.6(2014):646-656. |
入库方式： OAI收割
来源：南海海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。