Title: Effect of copper stress on ultra-structure of mesophyll cells in Chinese cabbage
Abstract: Ultra-structural changes in mesophll cells of two breeds of Chinese cabbage ( Wuyueman and Shanghaiqing ) under copper stress were investigated with transmission electron microscopy. When Chinese cabbage grows in the normal copper condition, various organelles of the crop morphologically integrate. But when it grows under copper stress, the number of chloroplasts reduces with increasing external copper concentration in both breeds. The chloroplast structure in leaf cells of Wuyueman is slightly injured when the concentration of Cu2+ reaches 10~20 mg·L-1. However, chloroplast membrane disrupts, some mitochondria cristae decreases, and certain crystal structure in some leaf mitochondria cells of Wuyueman are observed under high concentration of Cu2+(40~50 mg·L-1). In the leaf cells of Shanghaiqing , it is observed that ultra-structural damage gradually strengthens with increased Cu2+ concentration. The cell wall and cytoplast are separated, the chloroplast membrane is almost disorganized, some mitochondria cristae float in chaos and the vesicular sphere is visible under such concentration. The results also indicate that Shanghaiqing is more sensitive to copper stress than Wuyueman .
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot