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Studies of the Uptake of Nitrate in Barley: I. Kinetics of 13NO3− Influx
Open accessAbstract
(13)NO(3) (-) was used to investigate patterns of NO(3) (-) influx into roots of barley plants (Hordeum vulgare L. cv Klondike) previously grown with (;induced') or without (;uninduced') a source of external NO(3) (-) ([NO(3) (-)](0)). In both induced and uninduced plants, (13)NO(3) (-) influx was biphasic in the range from 0.005 to 50 moles per cubic meter [NO(3) (-)](0). In the low concentration range (<1 mole per cubic meter for induced plants and <0.3 mole per cubic meter for uninduced plants), influx was saturable and V(max) and K(m) values for influx either increased or decreased according to NO(3) (-) pretreatment. By contrast, (13)NO(3) (-) influx in the high concentration range revealed a strictly linear concentration dependence. These fluxes appeared to be mediated by a constitutive, rather than an inducible, transport system.
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Citations
Cited by
STITT, M., & KRAPP, A. (1999) · Plant, Cell & Environment · doi:10.1046/j.1365-3040.1999.00386.x · Cited by 1,044
Nitrate: nutrient and signal for plant growth.
Crawford, N. M. (1995) · The Plant Cell · doi:10.1105/tpc.7.7.859 · Cited by 1,010
Molecular and physiological aspects of nitrate uptake in plants
Crawford, N. M., & Glass, A. D. M. (1998) · Trends in Plant Science · doi:10.1016/s1360-1385(98)01311-9 · Cited by 958
Self-citationThe herbicide sensitivity gene CHL1 of arabidopsis encodes a nitrate-inducible nitrate transporter
Tsay, Y. (1993) · Cell · doi:10.1016/0092-8674(93)90399-b · Cited by 817
Root Nitrogen Acquisition and Assimilation
Miller, A. J., & Cramer, M. D. (2005) · Plant and Soil · doi:10.1007/s11104-004-0965-1 · Cited by 696
Metadata
- Authors
- Siddiqi, M. Y., Glass, A. D. M., Ruth, T. J., & Rufty, T. W.
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 1990-08-01
- Volume
- 93
- Issue
- 4
- Pages
- 1426-1432
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- OpenAlex
- W2128430880
- Cited by
- 378
- References
- 0
- FWCI
- 23.51
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Studies of the Uptake of Nitrate in Barley: I. Kinetics of 13NO3− Influx. https://app.cochat.ai/papers/10.1104/pp.93.4.1426
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- Siddiqi, M. Y., Glass, A. D. M., Ruth, T. J., & Rufty, T. W. (1990). Studies of the Uptake of Nitrate in Barley: I. Kinetics of 13NO3− Influx. Plant Physiology. https://doi.org/10.1104/pp.93.4.1426
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