Authors: Junliang Xin Baifei Huang Hongwen Dai
Publish Date: 2015/05/30
Volume: 394, Issue: 1-2, Pages: 287-300
Abstract
Cultivars of hot pepper Capsicum annuum L vary greatly in their fruit cadmium Cd concentration Previously we identified a lowCd YCT and a highCd JFZ cultivar In this study we elucidated the physiological mechanisms resulting in the differences in their Cd accumulationA timedependent and concentrationdependent hydroponic experiment was conducted to investigate the difference in roottoshoot Cd translocation between the two cultivars Furthermore a pot experiment was carried out to determine the Cd accumulation in all plant tissues of the two cultivars during fruit developmentA greater and more rapid roottoshoot Cd translocation was observed in JFZ Moreover the Cd continuously increased in all plant tissues during fruit development but following fruit development the fruit Cd concentration decreased in both cultivars In each cultivar the Cd accumulated in the fruit was significantly positively correlated with fruit dry weightThis work was supported by the National Natural Science Foundation of China Nos 41101303 and 41201320 Hunan Provincial Natural Science Foundation of China Nos 14JJ7082 and 2015JJ6026 and the China Scholarship Council We are grateful to Dr Amanda R Stiles Department of Plant and Microbial Biology University of California Berkeley USA for English editing and valuable comments that improved the manuscript
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