Effects of heavy metals Cu, Zn and its compound stress on physiological characteristics of Cinnamomum camphora

DOI

10.2991/iceesd-18.2018.30How to use a DOI?

Keywords

heavy metals; Cu, Zn; stress; physiological characteristics; Cinnamomum camphora

Abstract

In order to investigate the effects of Cu , Zn and their complex stress on the physiological characteristics of Cinnamomum camphora , the seedlings of C. camphora were treated with different concentrations of Cu , Zn ( 0 , 300 , 600 , 900 , 1200 , 1500 mg / kg ) and their mixture ( concentration of 300 mg / kg Cu + 300 mg / kg Zn , 300 mg / kg Cu + 600 mg / kg Zn , 600 mg / kg Cu + 300 mg / kg Zn , 600 mg / kg Cu + 600 mg / kg Zn ) . The results indicated that the transpiration rate, net photosynthetic rate and intercellular CO2 concentration of C. camphora were significantly affected by Cu, Zn and its compound stress within one hour. With the increase of Cu or Zn concentration, the transpiration rate increased first and then decreased. At 1200 mg / kg, the transpiration rate reached the maximum. At the same concentration, the effect of Zn on net photosynthetic rate was more significant than that on Cu and Cu/Zn compound stress, and the effect of complex stress on intercellular CO2 concentration was more significant than that of Cu and Zn. The CO2 concentration reached the maximum at 900 mg/kg of Cu and the net photosynthetic rate reached the maximum at 1200 mg/kg of Cu. Under single Zn stress, the net photosynthetic rate reached the maximum at 900mg/kg. Under Cu/Zn stress, The effects of Cu on transpiration rate, intercellular CO2 concentration and net photosynthetic rate of C. camphora were significantly higher than that of Zn concentration.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Fan Yang
AU  - Shaohui Huang
AU  - Yang Liu
AU  - Haiyang Wang
PY  - 2018/05
DA  - 2018/05
TI  - Effects of heavy metals Cu, Zn and its compound stress on physiological characteristics of Cinnamomum camphora
BT  - Proceedings of the 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018)
PB  - Atlantis Press
SP  - 182
EP  - 188
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-18.2018.30
DO  - 10.2991/iceesd-18.2018.30
ID  - Yang2018/05
ER  -