| Increase of ascorbic acid content and nutritional quality in spinach leaves during physiological acclimation to low temperature. | |
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MedLine Citation:
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PMID: 19376730 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The effect of acclimation to 10 degrees C on the leaf content of ascorbic and oxalic acids, was investigated in spinach (Spinacia oleracea L.). At 10 degrees C the content of ascorbic acid in leaves increased and after 7 days it was about 41% higher than in plants remaining under a 25 degrees C/20 degrees C day/night temperature regime. In contrast, the content of oxalate, remained unchanged. Transfer to 10 degrees C increased the ascorbic but not the oxalic acid content of the leaf intercellular washing fluid (IWF). Oxalate oxidase (OXO EC 1.2.3.4) activity was not detected in extracts of leaf blades. Therefore, oxalic acid degradation via OXO was not involved in the control of its content. Our results show that low temperature acclimation increases nutritional quality of spinach leaves via a physiological rise of ascorbic acid that does not feed-forward on the content of oxalic acid. |
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Authors:
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Simona Proietti; Stefano Moscatello; Franco Famiani; Alberto Battistelli |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-03-28 |
Journal Detail:
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Title: Plant physiology and biochemistry : PPB / Société française de physiologie végétale Volume: 47 ISSN: 1873-2690 ISO Abbreviation: Plant Physiol. Biochem. Publication Date: 2009 Aug |
Date Detail:
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Created Date: 2009-06-15 Completed Date: 2009-11-13 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882449 Medline TA: Plant Physiol Biochem Country: France |
Other Details:
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Languages: eng Pagination: 717-23 Citation Subset: IM |
Affiliation:
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Istituto di Biologia Agroambientale e Forestale, Consiglio Nazionale delle Ricerche, Viale Marconi 2, 05010 Porano (TR), Italy. simona.proietti@ibaf.cnr.it |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acclimatization
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physiology* Ascorbic Acid / metabolism* Cold Temperature* Extracellular Fluid / metabolism Nutritive Value Oxalic Acid / metabolism* Oxidoreductases / metabolism Plant Leaves / metabolism Spinacia oleracea / metabolism*, physiology |
| Chemical | |
Reg. No./Substance:
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144-62-7/Oxalic Acid; 50-81-7/Ascorbic Acid; EC 1.-/Oxidoreductases; EC 1.2.3.4/oxalate oxidase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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