NDLI: Variations of cadmium tolerance and accumulation among 39 Salix clones: implications for phytoextraction

Content Provider	Springer Nature Link
Author	Yang, Weidong Zhao, Fengliang Zhang, Xincheng Ding, Zheli Wang, Yuyan Zhu, Zhiqiang Yang, Xiaoe
Copyright Year	2014
Abstract	Willows (Salix spp.) show large remediation potential for cadmium (Cd)-contaminated sites, with Cd phytoextraction capacity significantly varying among specie and clone levels. In this study, a relatively large number of willow clones (39 clones) from China were evaluated for the differences in Cd tolerance and accumulation exposed to 10 μM CdCl$_{2}$ by hydroponic system for 35 days. The clones showed a wide variation of biomass accumulation ranging from growth inhibition to stimulation. Shoot tolerance indexes (TIs) varied between 0.09 and 1.85, and root TIs varied between 0.27 and 1.99 among clones. The large differences in Cd concentration (μg g$^{−1}$ dry weight, DW) ranged from 64.7 to 663.7 in leaves, from 118.0 to 308.4 in stems, and from 163.9 to 1,426.4 in roots among clones. Leaf translocation factors (TFs) differed from 0.09 to 1.72 and shoot TFs differed from 0.15 to 1.08. Total Cd content of shoots (including leaves and stems) varied between 29.8 and 2,726.52 μg plant$^{−1}$ DW among clones. With respect to TIs, TFs, Cd concentration, and shoot Cd content, the five clones showed higher Cd phytoextraction potential than the other clones. The results support that the selection of willows with enhanced phytoremediation efficiency should be concentrated on the clone level.
Starting Page	3263
Ending Page	3274
Page Count	12
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	73
Issue Number	7
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-09-07
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Salix spp Cadmium Hydroponic screen Clone selection Phytoremediation hydroponic screening Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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