[Production and releasing sites of superoxide anion in phytopathogenic bacteria].
Many phytopathogenic bacteria were founded to release the superoxide anion (O2-) by themselves from different sites and the production of O2- was related to the pathogenicity of strains. The presences of O2- in cytomembrane, cell wall and filtrate were confirmed by chemical method and electron spin resonance (ESR). The results show that filtrate may be the primary site of O2- production due to its higher O2- generating activity either in the presence or the absence of DDC. Additional lines of evidence further suggested a regulatory mechanism of O2- production in phytopathogenic bacteria.
Li
Xin
X
School of Life Sciences, Lanzhou University, Lanzhou 730000, China. lixin2004@st.lzu.edu.cn
Li
Hong-yu
HY
Pang
Xin-yue
XY
Wang
Jin-sheng
JS
Li
Min-quan
MQ
Duan
Jian-gong
JG
Yang
Fu-jun
FJ
D001419:Bacteria / Q000378:metabolism* / Q000472:pathogenicity; D004578:Electron Spin Resonance Spectroscopy; D008163:Luminescent Measurements; D010935:Plant Diseases / Q000382:microbiology*; D013481:Superoxides / Q000378:metabolism*
D013481:Superoxides