| Atmospheric carbon dioxide changes photochemical activity, soluble sugars and volatile levels in broccoli (Brassica oleracea var. italica). | |
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MedLine Citation:
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PMID: 20158238 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Atmospheric carbon dioxide (CO(2)) concentration is an environmental factor currently undergoing dramatic changes. The objective of the present study was to determine the effect of doubling the ambient CO(2) concentration on plant photochemistry as measured by photochemical quenching coefficient (qP), soluble sugars and volatiles in broccoli. Elevated CO(2) concentration increased qP values in leaves by up to 100% and 89% in heads, while glucose and sucrose in leaves increased by about 60%. Furthermore, in broccoli heads elevated CO(2) concentration induced approximately a 2-fold increase in concentrations of three fatty acid-derived C(7) aldehydes ((E)-2-heptenal, (E,Z)-2,4-heptadienal, (E,E)-2,4-heptadienal), two fatty acid-derived C(5) alcohols (1-penten-3-ol, (Z)-2-pentenol), and two amino acid-derived nitriles (phenyl propanenitrile, 3-methyl butanenitrile). In contrast, concentrations of the sulfur-containing compound 2-ethylthiophene and C(6) alcohol (E)-2-hexenol decreased. Finally, elevated CO(2) concentration increased soluble sugar concentrations due to enhanced photochemical activity in leaves and heads, which may account for the increased synthesis of volatiles. |
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Authors:
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Angelika Krumbein; Hans-Peter Kläring; Ilona Schonhof; Monika Schreiner |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 58 ISSN: 1520-5118 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-17 Completed Date: 2010-07-15 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 3747-52 Citation Subset: IM |
Affiliation:
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Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren/Erfurt e.V., Theodor-Echtermeyer-Weg 1, Grossbeeren, Germany. Krumbein@igzev.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Brassica
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chemistry*,
metabolism,
radiation effects Carbohydrates / chemistry* Carbon Dioxide / analysis, metabolism* Photochemical Processes Solubility Volatile Organic Compounds / analysis*, metabolism |
| Chemical | |
Reg. No./Substance:
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0/Carbohydrates; 0/Volatile Organic Compounds; 124-38-9/Carbon Dioxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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