title: The effect of lanthanide chloride on abscisic acid and electron-transport activity of some crops.
abstract: The abscisic acid (ABA) content of the root tips of four crops grown in lanthanide chloride solution and their root lengths had been determined. At lanthanide concentrations of 5 and 10 ppm, these crops all grew well and the ABA decreased. At higher lanthanide concentrations (100-500 ppm), the ABA is increased again. At these concentrations of lanthanum chloride, the photosystems I and II (PSI and PSII) and whole electron chain transport activities were inhibited. PSII was more sensitive than PSI, and it is concluded that La3+ acts on the diphenylcarbazide (DPC) action place of PSII oxidizing site.
authors: Department of Biology, Lanzhou University, China.
authors: F L
authors: FL
authors: Zeng
authors: M F
authors: MF
authors: Zhang
authors: S M
authors: SM
authors: Zhou
authors: J G
authors: JG
authors: Wu
authors: R W
authors: RW
authors: Deng
mesh_terms: D000040:Abscisic Acid / Q000378:metabolism*; D001692:Biological Transport / Q000187:drug effects; D002736:Chloroplasts / Q000187:drug effects / Q000378:metabolism; D018553:Cucumis sativus / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D002523:Edible Grain / Q000187:drug effects / Q000378:metabolism*; D004583:Electrons; D007811:Lanthanum / Q000494:pharmacology*; D010100:Oxygen / Q000378:metabolism; D045322:Photosynthetic Reaction Center Complex Proteins / Q000187:drug effects / Q000378:metabolism; D013025:Glycine max / Q000187:drug effects* / Q000378:metabolism; D014908:Triticum / Q000187:drug effects / Q000378:metabolism; D003313:Zea mays / Q000187:drug effects / Q000378:metabolism
chemical_list: D045322:Photosynthetic Reaction Center Complex Proteins; C028521:lanthanum chloride; D007811:Lanthanum; D000040:Abscisic Acid; D010100:Oxygen