Source:http://linkedlifedata.com/resource/pubmed/id/16659967
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
5
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| pubmed:dateCreated |
2010-6-29
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| pubmed:abstractText |
In the young leaves of pea (Pisum sativum L.) plants, there was a diurnal variation in the levels of amino acids. In the light, total amino nitrogen increased for the first few hours, then stabilized; in the dark, there was a transient decrease followed by a gradual recovery. Asparagine, homoserine, alanine, and glutamine accounted for much of these changes. The incorporation of (15)N into various components of the young leaves was followed after supply of (15)N-nitrate. (15)N appeared most rapidly in ammonia, due to reduction in the leaf, and this process took place predominantly in the light. A large proportion of the primary assimilation took place through the amide group of glutamine, which became labeled and turned over rapidly; labeling of glutamic acid and alanine was also rapid. Asparagine (amide group) soon became labeled and showed considerable turnover. Slower incorporation and turnover were found for aspartic acid, gamma-aminobutyric acid, and homoserine. Synthesis and turnover of all of the amino acids continued at a low rate in the dark. gamma-Aminobutyric acid was the only compound found to label more rapidly in the dark than in the light.
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| pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-16655833,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-16657841,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-16658005,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-16658912,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-16658970,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-16659968,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-4148475,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-4324282,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-4423889,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-5573364,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16659967-5592395
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| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
May
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| pubmed:issn |
0032-0889
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
59
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| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
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| pubmed:pagination |
915-9
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| pubmed:dateRevised |
2010-9-14
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| pubmed:year |
1977
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| pubmed:articleTitle |
Amino Acid metabolism of pea leaves: diurnal changes and amino Acid synthesis from N-nitrate.
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| pubmed:affiliation |
Department of Biology, Carleton University, Ottawa, Canada K1S 5B6.
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| pubmed:publicationType |
Journal Article
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