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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/2001jou303.pdf
Last checked: 09/29/2008
Requires: PDF Reader |
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| Access Restriction: | Certain MSU-hosted archive URLs may be restricted to legacy database members. |
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| Publication Type:
| Refereed |
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| Author(s): | Jiang, Z.;
Sullivan, W. M.;
Hull, J. |
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| Author Affiliation: | Department of Plant Sciences, University of Rhode Island, Kingston, RI |
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| Title: | Nitrate uptake and metabolism in Kentucky bluegrass as affected by nitrate levels |
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| Section: | Physiology
Other records with the "Physiology" Section
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| Meeting Info.: | Toronto, Ontario, Canada: July 2001 |
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| Source: | International Turfgrass Society Research Journal. Vol. 9, No. Part 1, 2001, p. 303-310. |
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| Publishing Information: | Oakville, Ontario, Canada: International Turfgrass Society |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Nitrate reductase; Relative growth rate; Nitrogen uptake; Metabolism; Poa pratensis; Nitrates; Nitrogen use; Shoot growth; Root growth; Application rates; Absorption rate
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| Abstract/Contents: | "Understanding the metabolic basis for nitrogen use efficiency (NUE) of turfgrasses is critical for the development of varieties that would require little nitrogen input. The objectives of this study were to evaluate nitrate uptake and the primary processes of nitrate metabloism in shoots and roots of selcted Kentucky bluegrass (Poa pratensis L.) genotypes grown in nutrient solutions at low (0.1 mM) and high (1.0 mM) nitrate levels. Nitrate uptake rate (NUR) was determined in situ by a solution depletion method. Nitrate reductase activity (NRA), nitrite reductase activity (NiRA), the size of metabolic nitrate pools (MNP) and storage nitrate pools (SNP) were assayed by in vivo methods. High nitrate level stimulated NUR and nitrate transport to shoots, where it increased shoot MNP, NRA, and growth. Leaf NRA was higher than leaf sheath and root NRA in all cultivars studied, and exhibited larger genotypic variation and a stronger response to changed nitrate level. Ammonium accumulation rates under light and aerobic conditions indicated that NiRA was smaller than ammonium assimilation rates in leaf tissues, but NiRA was greater than ammonium assimilation rates in leaf sheath and root tissues. The results suggest that the potential exists in Kentucky bluegrass for improving its NUE with a metabolic approach." |
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| Language: | English |
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| References: | 23 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jiang, Z., W. M. Sullivan, and J. Hull. 2001. Nitrate uptake and metabolism in Kentucky bluegrass as affected by nitrate levels. Int. Turfgrass Soc. Res. J. 9(Part 1):p. 303-310. |
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| Web URL(s):
https://archive.lib.msu.edu/tic/its/articles/2001jou303.pdf
Last checked: 09/29/2008
Requires: PDF Reader |
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MSU catalog number: SB 433 .I52 v. 9 |
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