Metal (Pb, Zn and Cu) uptake and tolerance by mangroves in relation to root anatomy and lignification/suberization
Cheng, H; Jiang, ZY; Liu, Y; Ye, ZH; Wu, ML; Sun, CC; Sun, FL; Fei, J; Wang, YS; yswang@scsio.ac.cn
2014
发表期刊TREE PHYSIOLOGY
ISSN0829-318X
卷号34期号:6页码:646-656
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.
部门归属[Cheng, Hao ; Jiang, Zhao-Yu ; Wu, Mei-Lin ; Sun, Cui-Ci ; Sun, Fu-Lin ; Fei, Jiao ; Wang, You-Shao] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China ; [Cheng, Hao ; Jiang, Zhao-Yu ; Wu, Mei-Lin ; Sun, Cui-Ci ; Sun, Fu-Lin ; Fei, Jiao ; Wang, You-Shao] Chinese Acad Sci, South China Sea Inst Oceanol, Daya Bay Marine Biol Res Stn, Guangzhou 510301, Guangdong, Peoples R China ; [Liu, Yong] Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab Exploitat & Utilizat Marine Fisheries Res, Minist Agr, Guangzhou 510300, Guangdong, Peoples R China ; [Ye, Zhi-Hong] Sun Yat Sen Univ, Sch Life Sci, State Key Lab Biocontrol, Guangzhou 510006, Guangdong, Peoples R China
关键词Exodermis Heavy Metals Mangrove Plants
学科领域Forestry
资助者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] ; 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] ; 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] ; 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]
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收录类别sci
资助项目LTO
资助者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] ; 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] ; 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] ; 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]
WOS记录号WOS:000339722900009
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文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10544
专题热带海洋环境国家重点实验室(LTO)
通讯作者yswang@scsio.ac.cn
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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.,...&yswang@scsio.ac.cn.(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.
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