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| DOI: | 10.1139/b75-029 |
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| Web URL(s): | http://www.nrcresearchpress.com/doi/pdf/10.1139/b75-029
Last checked: 06/29/2015
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Barta, A. L. |
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| Author Affiliation: | Department of Agronomy, Ohio Agricultural Research and Development Center, Wooster, Ohio |
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| Title: | Effect of nitrogen nutrition on distribution of photosynthetically incorporated 14CO2 in Lolium perenne |
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| Source: | Canadian Journal of Botany. Vol. 53, No. 3, February 1975, p. 237-242. |
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| Publishing Information: | Vancouver, British Columbia, Canada: The National Research Council of Canada |
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| # of Pages: | 6 |
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| Related Web URL: | http://www.nrcresearchpress.com/doi/abs/10.1139/b75-029
Last checked: 06/29/2015
Notes: Abstract only |
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| Keywords: | TIC Keywords: Carbon dioxide; Lolium; Nitrogen deficiency; Nitrogen level; Nutrient uptake; Photosynthetic parameters; Root growth; Soil toxicity
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| Abstract/Contents: | "Ryegrass plants grown in low NO3-N, high NO3-N, or high NH4-N nutrient culture were labeled by assimilation of 14CO2 by the tops. Plants were harvested 2, 6, and 24 h after labeling and percentage, 14C incorporation was measured in ethanol-soluble, chloroform-soluble, and ethanol-insoluble fractions of leaves, stems, and roots. Low N roots accumulated the greatest and high NH4-N roots accumulated the least 14C at the end of 24 h. Low NO3-N plants had higher levels of ethanol-soluble 14C and lower chloroform-soluble and ethanol-insoluble14C than high NO3-N plants. Analysis of the ethanol-soluble fraction revealed higher, 14C content in sugars and less in amino acids in low NO3-N plants than in high NO3-N plants. Labeling patterns in high NH4-N plants suggested incipient ammonium toxicity since 14C metabolism was retarded, yet the plants showed no visual toxicity symptoms. When using percentage conversion of label from the ethanol-soluble to ethanol-insoluble fraction as a criterion for plant metabolism, roots appeared to be more sensitive to N deficiency than were tops. This result implies that reduced root growth and (or) function (nutrient uptake) may be one of the first effects of N deficiency." |
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| Language: | English |
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| References: | 31 |
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| Note: | Abstract also appears in French
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Barta, A. L. 1975. Effect of nitrogen nutrition on distribution of photosynthetically incorporated 14CO2 in Lolium perenne. Can. J. Bot. 53(3):p. 237-242. |
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| DOI: 10.1139/b75-029 |
| Web URL(s):
http://www.nrcresearchpress.com/doi/pdf/10.1139/b75-029
Last checked: 06/29/2015
Requires: PDF Reader |
| 
MSU catalog number: b2201022a |
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