Absorption of Magnesium and Chloride by Excised Corn Root
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چکیده
منابع مشابه
Absorption of magnesium and chloride by excised corn root.
Absorption characteristics of Mg(2+) and Cl(-) were investigated with 5-day-old excised corn (Zea mays) roots. Uptake from both 0.5 and 10 milliequivalents per liter MgCl(2) solutions occurred at steady state rates for the first 6 hours. Inhibition by dinitrophenol and low temperatures established that absorption during this period was metabolically mediated in the absence and presence of Ca(2+...
متن کاملAbsorption of Magnesium and Chloride by Excised Corn Roots
Absorption characteristics of Mg2+ and Clwere investigated with 5-day-old excised corn (Zea inays) roots. Uptake from both 0.5 and 10 milliequivalents per liter MgCl2 solutions occurred at steady state rates for the first 6 hours. Inhibition by dinitrophenol and low temperatures established that absorption during this period was metabolically mediated in the absence and presence of Ca2+. Absorp...
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The uptake of orthophosphate ((32)P) by excised corn roots, Zea mays L. was studied using roots grown on 0.2 mm CaSO(4). Nine concentrations of KH(2)PO(4) from 1 to 256 mum were used at temperatures of 20 degrees , 30 degrees , and 40 degrees . Enzyme kinetic analysis was applied to the data obtained. Two apparent mechanisms (sites) of phosphate uptake were observed, 1 dominating at high P conc...
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Z. Naturforsch. 4 8c , 2 8 8 -2 9 3 (1993); received November 3, 1992 Sethoxydim, Growth Inhibition, Cell Cycle, Fatty Acids The mechanism of selective herbicidal action of sethoxydim was investigated by using cul tured root tips of corn and pea. Sethoxydim inhibited the growth of susceptible corn root at concentrations of 3 nM and above, but did not affect that of pea at 0.1 m M . Meristemati...
متن کاملInfluence of the root tip and the duration of washing on k retention by excised apical root segments of corn.
Excised apical segments of corn root (Zea mays) (5-15 mm from the root cap), some with and some without the root tips (0-5 mm) attached, were washed for varying time periods up to 4 hours in 0.5 mm CaSO(4). After washing, tips were removed from those segments washed with tips attached, and then all segments and tips were analyzed for K(+) content. The root tips (0-5 mm) initially contained abou...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1971
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.47.3.357