| Title: | Ecological Relevance of the Major Allelochemicals in Lycopersicon esculentum Roots and Exudates |
| Author(s): | Rial C; Gomez E; Varela RM; Molinillo JMG; Macias FA; |
| Address: | "Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science , University of Cadiz , Calle Republica Saharaui no. 7 , 11510 Puerto Real , Cadiz , Spain" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "Stigmasterol, bergapten, and alpha-tomatine were isolated from tomato roots. The preliminary phytotoxic activities of stigmasterol and alpha-tomatine were evaluated in a wheat-coleoptile bioassay, and alpha-tomatine was more active than stigmasterol. To confirm its phytotoxic activity, alpha-tomatine was tested on Lactuca sativa and two weeds ( Lolium perenne and Echinochloa crus-galli), and it was active in all cases. The stimulatory activities of alpha-tomatine and stigmasterol on parasitic-plant germination were also evaluated, and alpha-tomatine was found to be active on Phelipanche ramosa, a parasitic plant of tomato. alpha-Tomatine was identified in root exudates by LC-MS/MS. This confirms that alpha-tomatine is exuded by roots into the environment, where it could act as both an allelochemical and a stimulator of P. ramosa, a parasitic plant of tomato" |
| Keywords: | Biological Assay Echinochloa/drug effects/growth & development Lolium/drug effects/growth & development Solanum lycopersicum/*chemistry Pheromones/chemistry/*pharmacology Plant Exudates/chemistry/*pharmacology Plant Roots/chemistry Tomatine/chemistry/phar; |
| Notes: | "MedlineRial, Carlos Gomez, Elisabeth Varela, Rosa M Molinillo, Jose M G Macias, Francisco A eng 2018/04/21 J Agric Food Chem. 2018 May 9; 66(18):4638-4644. doi: 10.1021/acs.jafc.8b01501. Epub 2018 Apr 25" |
