Cadmium-Induced Physiological Response in Lonicera japonica Thunb.
Article first published online: 21 JAN 2013
Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
CLEAN – Soil, Air, Water
Volume 41, Issue 5, pages 478–484, May 2013
How to Cite
Liu, Z., Chen, W., He, X., Jia, L., Huang, Y., Zhang, Y. and Yu, S. (2013), Cadmium-Induced Physiological Response in Lonicera japonica Thunb. Clean Soil Air Water, 41: 478–484. doi: 10.1002/clen.201200183
- Issue published online: 16 APR 2013
- Article first published online: 21 JAN 2013
- Manuscript Accepted: 6 JUL 2012
- Manuscript Revised: 26 JUN 2012
- Manuscript Received: 26 MAR 2012
- Mineral nutrition;
Phytoremediation of Cd-contaminated soil using hyperaccumulators has become a new promising technique. Lonicera japonica Thunb. has been reported as a new Cd-hyperaccumulator. In this study, the effect of Cd stress duration on growth, photosynthesis and mineral nutrition of L. japonica was investigated. At 30 days after Cd stress, there was not any visual leaf symptoms in L. japonica, and an obvious stimulating effect of 10 mg kg−1 Cd on net photosynthesis rate (PN) was well correlated to photosynthetic pigment contents and mineral nutrition (Mg and Fe) concentrations. With Cd stress time extended, no significant differences of shoots and total biomass and PN compared with the control was observed, indicating that L. japonica could develop effective tolerance mechanisms to avoid Cd-induced damage to photosynthesis and growth. The photosynthetic performance remained functional through stomatal and non-stomatal adjustments, and mineral nutrition responses. The improved growth based on shoots and total biomass and PN by 10 mg kg−1 Cd, as suggested by hormesis, may be beneficial to enhance the potential for phytoremediation, because it typically faced the low Cd concentrations in actual Cd-contaminated soils. The study results indicated that L. japonica could be used for phytoremediation contaminated soils by Cd.