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当前位置: 首页 > 文章 > Cadmium Accumulation and Translocation in Two Jerusalem Artichoke (Helianthus tuberosus L.) Cultivars 土壤圈(英文版) 2011,21 (5)
Position: Home > Articles > Cadmium Accumulation and Translocation in Two Jerusalem Artichoke (Helianthus tuberosus L.) Cultivars Pedosphere 2011,21 (5)

Cadmium Accumulation and Translocation in Two Jerusalem Artichoke (Helianthus tuberosus L.) Cultivars

作  者：
Liang Chen;Xiaohua Long;Zhenhua Zhang;Xiaobo Zheng;Zed Rengel;Zhaopu Li
单  位：
Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095 (China);Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095 (China;Soil Science and Plant Nutrition, School of Earth and Environment, the University of Western Australia, 35 Stirling Highway, Crawley WA 6009 (Australia)
关键词：
cd;jerusalem artichoke;n5;n2;cultivars;cd toleranc
摘  要：
Jerusalem artichoke (Helianthus tuberosus L.) not just can be used for bioethanol production but may be potentially used in phytoremediation for the removal of heavy metal pollutants. Two Jerusalem artichoke cultivars, N2 and N5, were subjected to six cadmium (Cd) concentrations (0, 5, 25, 50, 100 and 200 mg L(-1)) to investigate Cd tolerance and accumulation. After 21 days of growth, the effects of Cd on growth, chlorophyll content, net photosynthetic rate, intercellular CO(2) concentration and malondialdehyde content were evaluated. Most growth parameters were reduced under Cd stress. The two Jerusalem artichoke cultivars had relatively high Cd tolerance and accumulation capacity (> 100 mg Kg(-1) with N5 being more tolerant and having higher Cd accumulation than N2. Roots accumulated more Cd than stems and leaves. The bioconcentration factors (far higher than 1) and translocation factors (lower than 1) decreased with an increase in Cd applied. The results suggested that Jerusalem artichoke could be grown at relatively high Cd loads, and N5 could be an excellent candidate for phytoremediation of Cd-contaminated soils.

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