Characterisation of early responses to cadmium in roots of Salix matsudana Koidz

ABSTRACT

This study deals with the characterisation of early responses of roots of Salix matsudana in respect to oxidative stress, subcellular distribution, and chemical forms when exposed to 50 μmol/L Cd. Within 12 h, the root length is reduced and the contents of O₂^•−, H₂O₂, and malondialdehyde are increased by 49%, 43%, and 35%. Cd is mainly retained in the cell walls; small amounts are distributed into other cell organelles. The largest proportion of Cd is found in the NaCl extractable, pectate-, and protein-integrated fraction.

KEYWORDS:

• Cadmium (Cd)
• chemical forms
• reactive oxygen species (ROS)
• Salix matsudana Koidz
• tissue fractionation

Acknowledgments

The authors wish to express their appreciation to the reviewers for this paper. The authors are grateful to Prof. Dr Lars Olof Björn (Lund University, Lund, Sweden) for critical reading of the manuscript and language improvement.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This project was supported by the National Natural Science Foundation of China [grant number 30972331].