Effect of flavonoids on Cd absorption in
cation channels of Avicennia marina root
1. Institute of Environment and Ecology, Jiangsu University, Zhenjiang, Jiangsu 212013, China； 2. Key Laboratory of Coastal and Wetland Ecosystems of
Ministry of Education, Xiamen University, Xiamen, Fujian 361102, China)
Abstract： The pioneer specie of Avicennia marina was investigated. The cation channel inhibitor (LaCl3) and the root exudate flavonoids were used to treat
plants by Cd. The effect of flavonoids on Cd absorption by cation channels and the bioaccumulation of Cd were detected in Avicennia marina root. The results
show that the contribution of cation channels to Cd absorption is decreased with the increasing of Cd content. The absorption of Cd by cation channels with
expending energy is the main way in the early stage for Avicennia marina root, and the maximum contribution rate was 78.7%. As the carrier of Cd, flavonoids
with chelation/complexation can impede the contribution of cation channels to Cd absorption, which benefites the absorption of essential elements for plant
growth in roots and alleviates the phytotoxicity of heavy metals. Flavonoids from root exudate can enhance the heavy metals tolerance of plant and protect
plants.
李健, 严重玲, 杜道林, 戴志聪, 祁珊珊. 类黄酮对白骨壤(Avicennia marina)
根系阳离子通道镉吸收的影响[J]. 江苏大学学报（自然科学版）, 2017, 38(1): 109-112.
LI Jian, YAN Zhong-Ling, DU Dao-Lin, DAI Zhi-Cong, QI Shan-Shan. Effect of flavonoids on Cd absorption in
cation channels of Avicennia marina root[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2017, 38(1): 109-112.
2017, Vol. 38 
