Effect of pH on Orthophosphate Uptake by Corn Roots

Effects of temperature on orthophosphate absorption by excised corn roots.

The uptake of orthophosphate ((32)P) by excised corn roots, Zea mays L. was studied using roots grown on 0.2 mm CaSO(4). Nine concentrations of KH(2)PO(4) from 1 to 256 mum were used at temperatures of 20 degrees , 30 degrees , and 40 degrees . Enzyme kinetic analysis was applied to the data obtained. Two apparent mechanisms (sites) of phosphate uptake were observed, 1 dominating at high P conc...

Effects of Temperature on Orthophosphate Absorption by Excised Corn Roots ` 0

The uptake of orthophosphate (32P) by excised corn roots, Zea mays L. was studied using roots grown on 0.2 mm CaSiO4. Nine concentrations of KH2PO4 from 1 to 256 /uM were used at temperatures of 200, 300, and, 400. Enzyme kinetic analysis was applied to the data obtained. Two apparent mechanisms (sites) o,f phosphate uptake were observed, 1 dominating at high P concentrations and 1 at low P con...

Effect of 2,4-Dichlorophenoxyacetic Acid and 2,4-Dinitrophenol on the Uptake and Metabolism of Exogenous Substrates by Corn Roots.

EFFECT OF LINOLENATE ON PHOTOSYNTHESIS BY INTACT SPINACH CHLOROPLASTS Conditions for the inhibition of orthophosphate uptake

Linolenate has been shown [I] to inhibit photosynthesis in intact spinach chloroplasts by inhibiting the influx of orthophosphate and the efflux of 3-phosphoglyceraldehyde. The inhibitory effect of linolenate was shown to depend on the level of the internal pool of metabolites [2] as a result of experiments which on the one hand used chloroplasts from preilluminated leaves or chloroplasts which...

the effect of consciousness-raising activities on learning grammatical structures by iranian guidance school efl learners

abstract the first purpose of this study was to investigate the effect of consciousness-raising (c-r) activities on learning grammatical structures (simple present tense in this case) by iranian guidance school efl learners. the second one was to investigate the effect of gender on learning the simple present tense through c-r activities and tasks. finally, this study aimed to investigate the ...