Membrane and ion transport properties in cereals under acidic and alkaline stress |
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| Authors: | Alajos Bé rczi,Lá rszló Erdei,Ferenc Zsoldos |
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| Affiliation: | Department of Plant Physiology, Attila József University, P. O. Box 428, Szeged, Hungary, H-6701.;Institute of Biophysics, Biological Research Center, Hungarian Academy of Sciences, Szeged, Hungary. |
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| Abstract: | The effects of pH on the growth and the K+ (86Rb) uptake and K+ content of excised rice ( Oryza sativa L. cv. Dunghan Shali) and wheat ( Triticum aestivum L. cv. GK Szeged) roots were investigated. Rice roots responded to H+ stress with an increased K+(86Rb) influx and a decreased K+ content, suggesting an increased exchange between the cytoplasmic K+ pool and the external medium. Under the same experimental conditions wheat did not show any anomalous K+(86Rb) influx. Growth of both rice and wheat was relatively insensitive to pH between 4 to 10. |
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| Keywords: | Root low-salt conditions influx Ca2+ K+(86Rb) H+ stress influx anomaly plasma membrane K+ content |
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