caa a22 4500 606219706 CHVBK 20210128101119.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s11104-014-2257-8 doi (NATIONALLICENCE)springer-10.1007/s11104-014-2257-8 Cultivar-specific differences in heavy metal (Cd, Cr, Cu, Pb, and Zn) concentrations in water spinach ( Ipomoea aquatic ‘Forsk') grown on metal-contaminated soil [Elektronische Daten] [BaoYan He, Ling Ling, LuYin Zhang, MengRun Li, QuSheng Li, XiuQin Mei, Hui Li, Ling Tan] Purpose: This study aimed to investigate the cultivar differences and the involved rhizosphere mechanisms in multiple heavy metal (i.e., Cd, Cr, Cu, Pb, and Zn) accumulation in water spinach. Methods: Pot experiments were performed on long-term contaminated soil to determine heavy metal accumulation in 15 water spinach cultivars. A hydroponics experiment was extended using Ca channel blocker LaCl3. Results: Nearly two-fold variations of heavy metal concentrations were found among the 15 cultivars. Cd, Cr, Cu, and Pb concentrations positively correlated with Ca and Zn concentrations. LaCl3 significantly reduced the phyto-uptake of Cd and Cr. The cultivar differences in heavy metal accumulation coincided with the concentration variation of metals activated by low molecular weight organic acids (LMWOAs) in the rhizosphere. Temperature and soil salinity clearly affected the cultivar differences in heavy metal accumulation. Conclusions: Ca uptake and LMWOA secretion serve a crucial function in the variation of heavy metal accumulation among water spinach cultivars. Temperature and soil salinity should be prioritized in cultivar screening. Springer International Publishing Switzerland, 2014 Combined heavy metals nationallicence Major metals nationallicence Cultivar difference nationallicence Ipomoea aquatic ‘Forsk' nationallicence Ca channel nationallicence Low molecular weight organic acids nationallicence He BaoYan School of Environment, Jinan University, 510632, Guangzhou, China aut Ling Ling School of Environment, Jinan University, 510632, Guangzhou, China aut Zhang LuYin School of Environment, Jinan University, 510632, Guangzhou, China aut Li MengRun School of Mathematics and Computational Science, Sun Yat-Sen University, 510275, Guangzhou, China aut Li QuSheng School of Environment, Jinan University, 510632, Guangzhou, China aut Mei XiuQin School of Environment, Jinan University, 510632, Guangzhou, China aut Li Hui School of Environment, Jinan University, 510632, Guangzhou, China aut Tan Ling School of Environment, Jinan University, 510632, Guangzhou, China aut Plant and Soil Springer International Publishing 386/1-2(2015-01-01), 251-262 0032-079X 386:1-2<251 2015 386 11104 https://doi.org/10.1007/s11104-014-2257-8 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/s11104-014-2257-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- He BaoYan School of Environment, Jinan University, 510632, Guangzhou, China aut NATIONALLICENCE 700 1- Ling Ling School of Environment, Jinan University, 510632, Guangzhou, China aut NATIONALLICENCE 700 1- Zhang LuYin School of Environment, Jinan University, 510632, Guangzhou, China aut NATIONALLICENCE 700 1- Li MengRun School of Mathematics and Computational Science, Sun Yat-Sen University, 510275, Guangzhou, China aut NATIONALLICENCE 700 1- Li QuSheng School of Environment, Jinan University, 510632, Guangzhou, China aut NATIONALLICENCE 700 1- Mei XiuQin School of Environment, Jinan University, 510632, Guangzhou, China aut NATIONALLICENCE 700 1- Li Hui School of Environment, Jinan University, 510632, Guangzhou, China aut NATIONALLICENCE 700 1- Tan Ling School of Environment, Jinan University, 510632, Guangzhou, China aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 386/1-2(2015-01-01), 251-262 0032-079X 386:1-2<251 2015 386 11104