Effect of nano-TiO2 on photochemical reaction of chloroplasts of spinach.
The effects of nano-TiO2 (rutile) on the photochemical reaction of chloroplasts of spinach were studied. The results showed that when spinach was treated with 0.25% nano-TiO2, the Hill reaction, such as the reduction rate of FeCy, and the rate of evolution oxygen of chloroplasts was accelerated and noncyclic photophosphorylation (nc-PSP) activity of chloroplasts was higher than cyclic photophosphorylation (c-PSP) activity, the chloroplast coupling was improved and activities of Mg2+-ATPase and chloroplast coupling factor I (CF1)-ATPase on the thylakoid membranes were obviously activated. It suggested that photosynthesis promoted by nano-TiO2 might be related to activation of photochemical reaction of chloroplasts of spinach.
Hong
Fashui
F
College of Life Sciences, Suzhou University, Suzhou-215006, People's Republic of China.
Zhou
Juan
J
Liu
Chao
C
Yang
Fan
F
Wu
Cheng
C
Zheng
Lei
L
Yang
Ping
P
D001671:Biochemistry / Q000379:methods; D001672:Biocompatible Materials / Q000494:pharmacology; D017301:Ca(2+) Mg(2+)-ATPase / Q000378:metabolism; D002736:Chloroplasts / Q000378:metabolism*; D008027:Light; D046911:Macromolecular Substances / Q000378:metabolism; D010100:Oxygen / Q000378:metabolism; D010785:Photophosphorylation; D017319:Photosensitizing Agents / Q000494:pharmacology*; D010788:Photosynthesis; D018724:Spinacia oleracea / Q000378:metabolism*; D020524:Thylakoids / Q000378:metabolism; D014025:Titanium / Q000378:metabolism* / Q000494:pharmacology*
D001672:Biocompatible Materials; D046911:Macromolecular Substances; D017319:Photosensitizing Agents; C009495:titanium dioxide; D014025:Titanium; D017301:Ca(2+) Mg(2+)-ATPase; D010100:Oxygen