Summary
Net nitrate uptake (J) into Pisum sativum L. seedlings has been investigated. J was high initially, but declined with time as NO3 − efflux (E) approached that of NO3 − influx (I). Both I and E were higher in plants which had been grown without N. J could be reversibly and immediately inhibited by 5 mmol m−3 NH4 +, although plants grown in the presence of nitrate were less sensitive. A theoretical model which involves substrate cycling across the plasmalemma is shown to increase the sensitivity to substrate and effectors. It predicts that during growth of Pisum in N free media the cycling rate (E/I) is increased and the sensitivity of net flux of inhibition by NH4 + is highest. The model also provides a means for control of cytoplasmic nitrate pool size [NO3 −]c.
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References
Belton P S, Lee R B and Ratcliffe R G 1985 J. Exp. Bot. 35, 190–210.
Deane-Drummond C E 1984 J. Exp. Bot. 35, 1289–1298.
Deane-Drummond C E 1985 Plant Cell Environ. 8, 105–110.
Deane-Drummond C E 1985 Plant Cell Environ. In press.
Deane-Drummond C E and Chaffey N J 1985 Plant Cell Environ. In press.
Deane-Drummond C E and Glass A D M 1983 Plant Physiol. 73, 105–110.
Glass A D M, Thompson RG and Bordeleau L 1985 Plant Physiol. 77, 379–381.
Jackson W A, Kwick K D, Volk R J and Butz R G 1976 Planta 132, 149–156.
Newsholme E A and Crabtree B 1976 Biochem. Soc. Symp. 41, 61–110.
Tischner R and Lorenzen H 1981 In Biology of Inorganic Nitrogen and Sulfur. Eds. H Bothe and A Trebst. Springer Verlag, Berlin, pp 252–259.
Ullrich W R, Larsson M, Larsson C M, Lesch S and Novacky N 1984 Physiol. Plant. 61, 369–376.
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© 1986 Martinus Nijhoff Publishers, Dordrecht/Boston/Lancaster
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Deane-Drummond, C.E. (1986). A substrate cycling model for nitrate uptake by Pisum sativum seedlings: A key to sensitivity of response of net flux to substrate and effectors?. In: Lambers, H., Neeteson, J.J., Stulen, I. (eds) Fundamental, Ecological and Agricultural Aspects of Nitrogen Metabolism in Higher Plants. Developments in Plant and Soil Sciences, vol 19. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4356-8_6
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DOI: https://doi.org/10.1007/978-94-009-4356-8_6
Publisher Name: Springer, Dordrecht
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