Paper Title:
Physiological Response to Zinc Pollution of Rape (Brassica chinensis l) in Paddy Soil Ecosystem
  Abstract

The effects of Zn on chlorophyll content and scavenging system of activated oxygen in leaves of rape were evaluated by cultivation experiments. The results showed that external symptoms, physiological and biochemical index and SOD activity were impacted by Zn treatments. The activity of SOD and contents of chlorophyll increased firstly in lower concentration of Zn (200 mg·kg-1), while the velocity of O2•- production and the cell membrane permeability had no marked change, and the balance of proSubscript texttective enzyme system was hold. Those may be regarded as a protecting function of plants. However, with the increase of concentration of Zn, negative effect had existed, the fronds were shorter and smaller, content of leaf pigments and the activity of SOD decreased drastically. The sensibility order of pigments to Zn stress was similarly Chlorophyll a> Chlorophyll a+b >Chlorophyll b. The velocity of O2•- production was increased sharply, the membrane penetration and electric conductivity were increased. Furthermore, the activate oxygen metabolism system of rape (Brassica Chinensis L) was destroyed. The results indicated that Zn stress affected scavenging system of activate oxygen and resulted in the balance of protective enzyme system was broken. The results also suggested that the tolerance limit of rape (Brassica Chinensis L) to zinc was 1000 mg·kg-1.

  Info
Periodical
Advanced Materials Research (Volumes 356-360)
Chapter
Chapter 1: Environmental Chemistry and Biology
Edited by
Hexing Li, Qunjie Xu and Daquan Zhang
Pages
39-43
DOI
10.4028/www.scientific.net/AMR.356-360.39
Citation
H. F. Yang, J. Zhang, J. L. Li, "Physiological Response to Zinc Pollution of Rape (Brassica chinensis l) in Paddy Soil Ecosystem", Advanced Materials Research, Vols. 356-360, pp. 39-43, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xiao Xue Wei, De Wen Li, Jing Hua Yu, Yuan Gang Zu
Environmental Biotechnology
Abstract:In the study, the gas exchange parameters and chlorophyll contents in the needles of Pinus koraiensis Sieb. et Zucc. exposed to exogenous...
422
Authors: Jing Li, Da Long Jiang, Xiao Ming Li
Chapter 17: Plant Protection and Biotechnology
Abstract:The low concentration of SO2 in the air can promote stomata opening of plants and improving plant photosynthetic rate, but the...
5450
Authors: Xun Chao Xiang, Yan Fang Xu, Xiao Lin Long, Wen Li Su
Chapter 8: Forestry Engineering
Abstract:The paper studied capacity of Indica and Japonica in seedling for Sr2+ stress in different concentration. Seedlings of Indica and Japonica...
2097
Authors: Qi Hong Zhu, Hong Xia Xia
Chapter 4: Related Themes
Abstract:In order to investigate the ability of Pteris vittata restoring Zn polluted soil, water cultured experiment is utilized to study the...
1151
Authors: Qi Hong Zhu, Hong Xia Xia
Chapter 1: Environmental Chemistry, Biology and Technology
Abstract:The method of culturing in nutrient solution is used to research the influence of lead on the antioxidation system of dishlia. Results show...
141