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| DOI: | 10.1104/pp.51.2.267 |
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| Web URL(s): | http://www.plantphysiol.org/content/51/2/267.full.pdf+html?sid=040ef93a-a6fe-47d5-809d-9196ca5c41e4
Last checked: 5/2/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Morgan, M. A.;
Volk, R. J .;
Jackson, W. A. |
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| Author Affiliation: | Department of Soil Science, North Carolina State University, Raleigh, North Carolina; Morgan: Department of Soil Science, Faculty of Agriculture, University College, Glasnevin, Dublin, Ireland |
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| Title: | Simultaneous influx and efflux of nitrate during uptake by perennial ryegrass |
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| Source: | Plant Physiology. Vol. 51, No. 2, February 1973, p. 267-272. |
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| Publishing Information: | Rockville, MD: American Society of Plant Physiologists |
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| # of Pages: | 6 |
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| Related Web URL: | http://www.plantphysiol.org/content/51/2/267.abstract
Last checked: 5/2/2014
Notes: Abstract only |
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| Keywords: | TIC Keywords: Efflux; Lolium perenne; Magnesium; Nitrates; Nitrogen level; Nitrogen losses; Nitrogen uptake; Nitrogen use
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| Abstract/Contents: | "Experiments with intact plants of Lolium perenne previously grown with 14NO3- revealed significant efflux of this isotopic species when the plants were transferred to solutions of highly enriched 15NO3-. The exuded 14NO3- was subsequently reabsorbed when the ambient solutions were not replaced. When they were frequently replaced, continual efflux of the 14NO3- was observed. Influx of 15NO3- was significantly greater than influx of 14NO3- from solutions of identical NO3- concentration. Transferring plants to 14NO3- solutions after a six-hour period in 15NO3- resulted in efflux of the latter. Presence of Mg2+, rather than Ca2+, in the ambient 15NO3- solution resulted in a decidedly increased rate of 14NO3- efflux and a slight but significant increase in 15NO3- influx. Accordingly, net NO3- influx was slightly depressed. A model in accordance with these observations is presented; its essential features include a passive bidirectional pathway, an active uptake mechanism, and a pathway for recycling of endogenous NO3- within unstirred layers from the passive pathway to the active uptake site." |
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| Language: | English |
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| References: | 26 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Morgan, M. A., R. J. Volk, and W. A. Jackson. 1973. Simultaneous influx and efflux of nitrate during uptake by perennial ryegrass. Plant Physiol. 51(2):p. 267-272. |
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| DOI: 10.1104/pp.51.2.267 |
| Web URL(s):
http://www.plantphysiol.org/content/51/2/267.full.pdf+html?sid=040ef93a-a6fe-47d5-809d-9196ca5c41e4
Last checked: 5/2/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: b2215281a |
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