Abstract
Potassium is an essential macronutrientrequired for plant growth and development (Flowers and LŠuchli, 1983).The K+ concentration in the soil may be very low, at least in certain conditions,and plants accumulate the cation via high-affinity K+transporters located in the plasma membrane of root cells. In barley,K+ absorption exhibits a biphasic response to the increase of K+ concentration in the external medium (Epstein etal., 1963) showing a first saturable component in the micromolar range and asecond saturable component in the millimolar range.
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© 1999 Springer Science+Business Media Dordrecht
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Santa-Marêa, G., Rubio, F., Dubcovsky, J., Rodrêguez-Navarro, A. (1999). The HAK1 and HAK2 Genes of Barley Encodehigh-Affinity K+ Transporters That are also Presentin Arabidopsis. In: Gissel-Nielsen, G., Jensen, A. (eds) Plant Nutrition — Molecular Biology and Genetics. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2685-6_18
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DOI: https://doi.org/10.1007/978-94-017-2685-6_18
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