Simultaneous Consideration of Tissue and Substrate Potassium Concentration in K+ Uptake Kinetics: A Model
AUTOR(ES)
Siddiqi, M. Yaeesh
RESUMO
The importance of the simultaneous consideration of tissue and substrate concentration in the estimation of ion uptake is discussed. An elaboration of the model of ion uptake, originally proposed by E. Epstein, is developed. The modified model takes both tissue and substrate ion concentration into account and uses true constants in the estimation of uptake. A test case—K+ uptake by a barley cultivar—has been presented to show the working of the model. The relevance of the modified model is also pointed out.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=426191Documentos Relacionados
- The Potassium Transporter AtHAK5 Functions in K+ Deprivation-Induced High-Affinity K+ Uptake and AKT1 K+ Channel Contribution to K+ Uptake Kinetics in Arabidopsis Roots1[w]
- Myosin-V stepping kinetics: A molecular model for processivity
- Simultaneous Measurements of Cytoplasmic K+ Concentration and the Plasma Membrane Electrical Parameters in Single Membrane Samples of Chara corallina
- Kinetics of Growth and Substrate Uptake in a Biological Film System
- Inward-rectifying K+ channels in guard cells provide a mechanism for low-affinity K+ uptake.