| Humic substances can modulate the allelopathic potential of caffeic, ferulic, and salicylic acids for seedlings of lettuce (Lactuca sativa L.) and tomato (Lycopersicon esculentum Mill.). | |
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MedLine Citation:
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PMID: 16302757 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The capacity of a leonardite humic acid (LHA), a soil humic acid (SHA), and a soil fulvic acid (SFA) in modulating the allelopathic potential of caffeic acid (CA), ferulic acid (FA), and salicylic acid (SA) on seedlings of lettuce (Lactuca sativa L.) and tomato (Lycopersicon esculentum Mill.) was investigated. Lettuce showed a sensitivity greater than that of tomato to CA, FA, and SA phytotoxicity, which was significantly reduced or even suppressed in the presence of SHA or SFA, especially at the highest dose, but not LHA. In general, SFA was slightly more active than SHA, and the efficiency of the action depended on their concentration, the plant species and the organ examined, and the allelochemical. The daily measured residual concentration of CA and FA decreased drastically and that of SA slightly in the presence of germinating seeds of lettuce, which were thus able to absorb and/or enhance the degradation of CA and FA. The adsorption capacity of SHA for the three allelochemicals was small and decreased in the order FA > CA > SA, thus suggesting that adsorption could be a relevant mechanism, but not the only one, involved in the "antiallelopathic" action. |
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Authors:
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Elisabetta Loffredo; Linda Monaci; Nicola Senesi |
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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: 53 ISSN: 0021-8561 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2005 Nov |
Date Detail:
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Created Date: 2005-11-23 Completed Date: 2006-02-03 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: 9424-30 Citation Subset: IM |
Affiliation:
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Dipartimento di Biologia e Chimica Agroforestale ed Ambientale, University of Bari, Via Amendola 165/A, 70126 Bari, Italy. loffredo@agr.uniba.it |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adsorption Caffeic Acids / chemistry, pharmacology* Coumaric Acids / chemistry, pharmacology* Germination / drug effects Humic Substances* Lettuce / drug effects, growth & development Lycopersicon esculentum / drug effects, growth & development Pheromones / pharmacology* Salicylic Acid / chemistry, pharmacology* Seedling / drug effects* |
| Chemical | |
Reg. No./Substance:
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0/Caffeic Acids; 0/Coumaric Acids; 0/Humic Substances; 0/Pheromones; 1135-24-6/ferulic acid; 331-39-5/caffeic acid; 69-72-7/Salicylic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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