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| DOI: | 10.21273/HORTSCI.33.3.443 |
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| Web URL(s): | https://journals.ashs.org/hortsci/view/journals/hortsci/33/3/article-p443.xml
Last checked: 11/14/2019
Requires: PDF Reader
Notes: Item is within a single large file; Abstract only |
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| Publication Type:
| Refereed |
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| Author(s): | Jiang, Zhongchun;
Hull, Richard J. |
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| Author Affiliation: | Plant Sciences Department, Univ. of Rhode Island, Kingston, RI 02881-0804 |
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| Title: | Effects of sucrose and oxygen on nitrate reductase activity and growth of Kentucky Bluegrass |
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| Section: | Crop physiology/environmental cross-commodity
Other records with the "Crop physiology/environmental cross-commodity" Section
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| Source: | HortScience. Vol. 33, No. 3, June 1998, p. 479 (204). |
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| Publishing Information: | Alexandria, VA: American Society for Horticultural Science |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Sucrose; Oxygen; Nitrate reductase; Root growth; Poa pratensis
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| Abstract/Contents: | "Nitrate reductase activity (NRA) in turfgrass roots should play an important role in the N metabolism of the whole plant because a major part of the shoots is removed by mowing. However, preliminary experiments demonstrated a lack of in vivo NRA in roots of Kentucky bluegrass grown in Hoagland's nutrient solutions, which were constantly aerated. We hypothesized that 0₂ inhibited NRA by oxidizing carbohydrate avalible for NO₃- reduction in roots. To test this hypothesis, Kentucky bluegrass (Poa pratensis L.), cultivar Merit, was grown in nutrient solutions containing 0.1 mM NO₃-. Grass cultures were treated with +0₂ (solution aerated), -0₂ (not aerated), +Suc (sucrose added to solution, final concentration = 25 mM) or -Suc (not added) for 12 days. Plants were harvested at 5:00 pm, separated into shoots and roots, and analyzed for in vivo NRA. The results partly supported the above hypothesis because the -Suc-O₂ roots showed significantly higher NRA than -Suc+0₂ roots. However, +Suc roots, did not exhibit greater NRA than -Suc roots, possibly because of a decreased pH in the solutions. Oxygen increased root growth and hence the growth of the whole plant, while sucrose decreased leaf N content and leaf NRA but did not improve growth." |
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| Language: | English |
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| References: | 0 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jiang, Z., and R. J. Hull. 1998. Effects of sucrose and oxygen on nitrate reductase activity and growth of Kentucky Bluegrass. HortScience. 33(3):p. 479 (204). |
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| DOI: 10.21273/HORTSCI.33.3.443 |
| Web URL(s):
https://journals.ashs.org/hortsci/view/journals/hortsci/33/3/article-p443.xml
Last checked: 11/14/2019
Requires: PDF Reader
Notes: Item is within a single large file; Abstract only |
| 
MSU catalog number: SB 1 .H64 |
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