Correlations between Potassium Uptake and Hydrogen Efflux in Barley Varieties
نویسندگان
چکیده
منابع مشابه
Relative Uptake and Translocation of Potassium and Cesium in Barley.
The ability of plants to absorb ions selectively is a major reason for the preference for chemical rather than physical theories of ion uptake (11), yet in spite of this, comparatively little attention has been paid to this property. Thus far, selectivity between alkali cations has been examined in excised barley roots (6) in beet discs (12) and in whole plants (1,4). In recent years the relati...
متن کاملK analysis of sodium-induced potassium efflux in barley: mechanism and relevance to salt tolerance
• Stimulation of potassium (K) efflux by sodium (Na) has been the subject of much recent attention, and its mechanism has been attributed to the activities of specific classes of ion channels. • The short-lived radiotracer K was used to test this attribution, via unidirectional K-flux analysis at the root plasma membrane of intact barley (Hordeum vulgare), in response to NaCl, KCl, NH4Cl and ma...
متن کامل42K analysis of sodium-induced potassium efflux in barley: mechanism and relevance to salt tolerance.
*Stimulation of potassium (K(+)) efflux by sodium (Na(+)) has been the subject of much recent attention, and its mechanism has been attributed to the activities of specific classes of ion channels. *The short-lived radiotracer (42)K(+) was used to test this attribution, via unidirectional K(+)-flux analysis at the root plasma membrane of intact barley (Hordeum vulgare), in response to NaCl, KCl...
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Plants can use ammonium (NH4+) as the sole nitrogen source, but at high NH4+ concentrations in the root medium, particularly in combination with a low availability of K+, plants suffer from NH4+ toxicity. To understand the role of K+ transporters and non-selective cation channels in K+/NH4+ interactions better, growth, NH4+ and K+ accumulation and the specific fluxes of NH4+, K+, and H+ were ex...
متن کاملModelling potassium uptake by wheat
A model has been used to simulate potassium (K) uptake by wheat in a pot culture experiment. Three soils from India, namely Alfisol, Inceptisol and Vertisol, were differentially K exhausted by Sudan grass (Surghum vulgare var. Sudanensis) for a period of 280 days and were used to simulate potassium uptake by wheat (Triticum aestivum) and also to predict the amounts of K released or fixed during...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1981
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.68.2.457