caa a22 4500 60548063X CHVBK 20210128100416.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s11099-015-0124-3 doi (NATIONALLICENCE)springer-10.1007/s11099-015-0124-3 Positive correlation between potassium uptake and salt tolerance in wheat [Elektronische Daten] [D. Cheng, G. Wu, Y. Zheng] The aim of our study was to answer whether any positive correlation exists between K+ uptake and salt tolerance in wheat. We carried out a sand-culture experiment with salt-tolerant, DK961 (ST), and salt-sensitive, JN17 (SS), wheat cultivars, where photosynthesis, the K+/Na+ ratio, growth, and the biomass yield were examined. The seeds were exposed for four weeks to six NaCl concentrations (50, 100, 150, 200, 250, and 300 mM), which were embodied in the Hoagland solution. Salinity-induced decrease of K+ or increase in the Na+ content was much smaller in ST than that in SS. The reductions in the light-saturated photosynthetic rate (P Nmax) and chlorophyll content caused by salinity were smaller in the ST compared to SS. Stomatal conductance decreased in both cultivars under saline conditions; nevertheless, it was lower in SS than in ST. The antioxidative capacity was higher in ST than that in SS under saline conditions. Significant positive correlations were observed in both cultivars between K+ contents and P Nmax/biomass yields. We suggest that higher-affinity K+ uptake might play a key role in higher salt tolerance and it might be a reliable indicator for breeding new species of salt-tolerant wheat. The Institute of Experimental Botany, 2015 gas exchange nationallicence malondialdehyde nationallicence peroxidase nationallicence reactive oxygen species nationallicence Triticum aestivum L nationallicence Chl : chlorophyll nationallicence DM : dry mass nationallicence FM : fresh mass nationallicence g s : stomatal conductance nationallicence MDA : malondialdehyde nationallicence P Nmax : light-saturated photosynthetic rate nationallicence POD : peroxidase nationallicence ROS : reactive oxygen species nationallicence SS : salt-sensitive nationallicence ST : salt-tolerant nationallicence Cheng D. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, No. 20 Nanxincun, 100093, Xiangshan, Beijing, China aut Wu G. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, No. 20 Nanxincun, 100093, Xiangshan, Beijing, China aut Zheng Y. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, No. 20 Nanxincun, 100093, Xiangshan, Beijing, China aut Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/3(2015-09-01), 447-454 0300-3604 53:3<447 2015 53 11099 https://doi.org/10.1007/s11099-015-0124-3 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/s11099-015-0124-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cheng D. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, No. 20 Nanxincun, 100093, Xiangshan, Beijing, China aut NATIONALLICENCE 700 1- Wu G. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, No. 20 Nanxincun, 100093, Xiangshan, Beijing, China aut NATIONALLICENCE 700 1- Zheng Y. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, the Chinese Academy of Sciences, No. 20 Nanxincun, 100093, Xiangshan, Beijing, China aut NATIONALLICENCE 773 0- Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/3(2015-09-01), 447-454 0300-3604 53:3<447 2015 53 11099