Abstract
In white clover plants dependent on N2 fixation and acclimated to a uniform, artificial environment, N2 fixation potential in the photoperiod is closely linked to current photosynthesis, while in the night it is limited by assimilate generated in the previous photoperiod. Darkening or defoliating plants reduces N2 fixation potential in a manner which is quantitatively linked to the diurnal supply of assimilate. The effects of such treatments are apparent within 30–60 min. Enhancing photosynthesis above the level to which the plants are acclimated increases N2 fixation potential, but the effect is relatively small.
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References
Minchin, F.R., Witty, J.F., Sheehy, J.E. and Muller, M. 1983. A major error in the acetylene reduction assay: decreases in nodular nitrogenase activity under assay conditions. J. Exp. Bot., 34, 641–649
Ryle, G.J.A., Powell, C.E. and Gordon, A.J. 1985. Short-term changes in CO2 evolution associated with nitrogenase activity in white clover in response to defoliation and photosynthesis. J. Exp Bot. 36, 634–643.
Ryle, G.J.A., Powell, C.E. and Gordon, A.J. 1986. Defoliation in white clover: nodule metabolism, nodule growth and maintenance, and nitrogenase functioning during growth and regrowth. Ann. Bot. 57, 263–271.
Sheehy, J.E., Minchin, F.R. and Witty, J.F. 1983. Biological control of the resistance to oxygen flux in nodules. Ann. Bot. 52, 565–571.
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© 1988 ECSC, EEC, EAEC, Brussels and Luxembourg
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Ryle, G.J.A. (1988). The Influence of Host Plant Energy Supply on Nitrogen Fixation. In: O’Gara, F., Manian, S., Drevon, J.J. (eds) Physiological Limitations and the Genetic Improvement of Symbiotic Nitrogen Fixation. Advances in Agricultural Biotechnology, vol 23. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1401-8_1
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DOI: https://doi.org/10.1007/978-94-009-1401-8_1
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7126-0
Online ISBN: 978-94-009-1401-8
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