caa a22 4500 606219218 CHVBK 20210128101117.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s11104-015-2409-5 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2409-5 Effects of cultivars and water management on cadmium accumulation in water spinach ( Ipomoea aquatica Forsk.) [Elektronische Daten] [Qingqing Xiao, Ming Wong, Lu Huang, Zhihong Ye] Background and aims: Water spinach is a common leafy vegetable in Asia, with a strong ability to accumulate cadmium (Cd) in its edible parts. The aims of this study were to investigate the effects of cultivar variation and water management on Cd accumulation in this plant. Methods: Three experiments were conducted: a soil pot trial with 32 cultivars, a rhizobox trial with 4 cultivars under flooded and non-flooded conditions and an uptake kinetics trial with 2 cultivars. Results: There were significant differences in Cd accumulation between the different cultivars, and Cd concentrations in shoots were significantly lower in the flooded (0.25-1.4, mean 0.90mgkg−1 DW) than in the non-flooded (1.9-4.7, 3.2mgkg−1) treatments. Cultivars with a low Cd accumulation had a lower Cd bioavailability and mobility in the rhizosphere soil, higher Cd combined with Fe plaque on roots, lower Cd uptake capacity by roots, and lower Cd transfer factors than those with a high Cd accumulation. Conclusions: Water spinach grown under anaerobic conditions effectively reduces Cd accumulation in edible parts. Low Cd-accumulating cultivars tend to possess a high ability to reduce Cd bioavailability in rhizosphere soil, as well as decrease Cd uptake, and translocation from root to shoot. Springer International Publishing Switzerland, 2015 Bioavailability nationallicence Cadmium nationallicence Iron plaque nationallicence Radial oxygen loss (ROL) nationallicence Rhizosphere nationallicence Water spinach ( Ipomoea aquatica ) nationallicence Xiao Qingqing State Key Laboratory of Biocontrol & College of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China aut Wong Ming Consortium on Health, Environment, Education and Research (CHEER), & Department of Science and Environmental Studies, Hong Kong Institute of Education, Tai Po, Hong Kong SAR, People's Republic of China aut Huang Lu State Key Laboratory of Biocontrol & College of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China aut Ye Zhihong State Key Laboratory of Biocontrol & College of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China aut Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 33-49 0032-079X 391:1-2<33 2015 391 11104 https://doi.org/10.1007/s11104-015-2409-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2409-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xiao Qingqing State Key Laboratory of Biocontrol & College of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China aut NATIONALLICENCE 700 1- Wong Ming Consortium on Health, Environment, Education and Research (CHEER), & Department of Science and Environmental Studies, Hong Kong Institute of Education, Tai Po, Hong Kong SAR, People's Republic of China aut NATIONALLICENCE 700 1- Huang Lu State Key Laboratory of Biocontrol & College of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China aut NATIONALLICENCE 700 1- Ye Zhihong State Key Laboratory of Biocontrol & College of Ecology and Evolution, School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 33-49 0032-079X 391:1-2<33 2015 391 11104