| Low molecular weight organic acids and fatty acids in root exudates of two Lupinus cultivars at flowering and fruiting stages. | |
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MedLine Citation:
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PMID: 11705257 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Low molecular weight organic acids (LOAs) and fatty acids in root exudates of two lupin cultivars, Lupinus albus cv. Multolupa and L. luteus cv. Tremosilla, were determined at flowering and fruiting stages. LOAs were analysed by capillary electrophoresis. Acetic and citric acids were the most abundant, especially the latter in L. luteus at the flowering stage (5922.79 micrograms/g dry root). The significant decrease in acid content of both cultivars from flowering to fruiting stages was also striking. The highest levels of acetic acid were detected in L. luteus at fruiting stage (1542.03 micrograms/g dry root). The significant citrate production in L. luteus could be related to the low phosphorus concentration in the studied soils but not to proteoid roots, which were detected only in L. albus. The source of the LOAs detected in these exudates is also discussed, since they may be produced either by the plant or by the associated rhizobacteria. The profile of phospholipid fatty acids was determined by high-resolution GC. A high level of 18:2 omega 6 (a fatty-acid specific to fungi) was found in exudates of L. luteus (a mycorrhizal plant) in contrast to L. albus (a non-mycorrhizal plant). |
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Authors:
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J A Lucas García; C Barbas; A Probanza; M L Barrientos; F J Gutierrez Mañero |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Phytochemical analysis : PCA Volume: 12 ISSN: 0958-0344 ISO Abbreviation: Phytochem Anal Publication Date: 2001 Sep-Oct |
Date Detail:
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Created Date: 2001-11-13 Completed Date: 2001-12-31 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9200492 Medline TA: Phytochem Anal Country: England |
Other Details:
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Languages: eng Pagination: 305-11 Citation Subset: IM |
Affiliation:
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Universidad San Pablo CEU, PO Box 67, Boadilla del Monte, 28660 Madrid, Spain. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acids
/
analysis*,
chemistry Chromatography, Gas Electrophoresis, Capillary Fabaceae / chemistry Fatty Acids / analysis*, chemistry Molecular Weight Organic Chemicals / analysis*, chemistry Phospholipids / chemistry Plant Roots / chemistry Reproducibility of Results |
| Chemical | |
Reg. No./Substance:
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0/Acids; 0/Fatty Acids; 0/Organic Chemicals; 0/Phospholipids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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