作 者：Li,J., Lu, H.L., Liu, J.C., Hong, H.L.,Yan,C.L.

影响因子：2.791

刊物名称：Ecotoxicology and Environmental Safety

出版年份：2015

卷：120 页码：1-6

Flavonoid is a key factor for the tolerance to cadmium in plants. Concentration-dependent kinetics experiment was conducted to investigate the

influence of flavonoid amendment on the Cd²⁺uptake inAvicennia marina (Forsk) Vierh.roots. We found that compared with the control, saturation concentration and maximal absorption rate of Cd was higher under flavonoid amendment (p<0 .05). when roots were exposed to ion transport inhibitor (lacl₃), flavonoid amendment also facilitated Cd transport in roots. Flavonoids had no influence on Cd²⁺uptake in root cell walls. In conclusion, flavonoids enhance the tolerance to Cd and have a significant stimulative effect on symplasm transport of Cd inA. marinaroots.Ca²⁺-channel was not the unique means of symplasm transport for Cd²⁺absorption.

Fig. 2.Curve fits of Cd²⁺concentration-dependent kinetics inA. Marinaroots under different CdCl₂stress. V₀, V₁represent rate of Cd²⁺absorption with addition and non-addition of flavonoids respectively.