Salinity Stress Increases Cytoplasmic Ca Activity in Maize Root Protoplasts
نویسندگان
چکیده
منابع مشابه
Salinity affects intracellular calcium in corn root protoplasts.
Previous work with the fluorescent Ca probe chlorotetracycline (CTC) showed that salinity displaces Ca from membranes of root cells. Using a variety of indirect approaches, we studied whether salinity displaces Ca from the cell surface or from internal membranes of corn (Zea mays L. cv Pioneer 3377) root protoplasts. Preloading the cells with supplemental Ca counteracted subsequent NaCl effects...
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Calcium is an important factor in the ability of plants to resist salt stress, possibly because of its role in maintaining membrane integrity. We studied the effects of NaCl stress on membrane-associated Ca in corn root protoplasts (Zea mays L. cv Pioneer 3377) using the fluorescent Ca probe chlorotetracycline (CTC). Protoplasts were isolated from the cortex of primary roots of corn seedlings (...
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Protoplasts isolated from root cap cells of maize were shown to secrete fucose-rich polysaccharides and were used in a patch–clamp study to monitor changes in whole-cell capacitance. Ca 2 1 was required for exocytosis, which was measured as an increase in cell capacitance during intracellular dialysis with Ca 2 1 buffers via the patch pipette. Exocytosis was stimulated significantly by small in...
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Soil salinity is a major constraint to crop growth and yield. The primary and lateral roots of Arabidopsis thaliana are known to respond differentially to a number of environmental stresses, including salinity. Although the maize root system as a whole is known to be sensitive to salinity, whether or not different structural root systems show differential growth responses to salinity stress has...
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Brassinosteroids (BRs) are steroidal phytohormones that regulate various physiological processes, such as root development and stress tolerance. In the present study, we showed that brassinolide (BL) affects potato root in vitro growth in a dose-dependent manner. Low BL concentrations (0.1 and 0.01 μg/L) promoted root elongation and lateral root development, whereas high BL concentrations (1-10...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1989
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.90.4.1271