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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Phytotoxicity of Triterpenes and Limonoids from the Rutaceae and Meliaceae. 5 alpha,6 beta,8 alpha,12 alpha-Tetrahydro-28-norisotoonafolin - a Potent Phytotoxin from Toona ciliata

Nebo, Liliane [1] ; Varela, Rosa M. [2] ; Molinillo, Jose M. G. [2] ; Severino, Vanessa G. P. [1] ; Sarria, Andre L. F. [1] ; Cazal, Cristiane M. [1] ; das Gracas Fernandes, Maria Fatima [1] ; Fernandes, Joao B. [1] ; Macias, Francisco A. [2]
Total Authors: 9
[1] Univ Fed Sao Carlos, Dept Organ Chem, Lab Nat Prod, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Cadiz, Sch Sci, Dept Organ Chem, Allelopathy Grp, Inst Biomol INBIO, Puerto Real 11510, Cadiz - Spain
Total Affiliations: 2
Document type: Journal article
Source: NATURAL PRODUCT COMMUNICATIONS; v. 10, n. 1, p. 17-20, JAN 2015.
Web of Science Citations: 4

Limonoids and triterpenes are the largest groups of secondary metabolites and have notable biological activities. Meliaceae and Rutaceae are known for their high diversity of metabolites, including limonoids, and are distinguished from other families due to the frequent occurrence of such compounds. The increased interest in crop protection associated with the diverse bioactivity of these compounds has made these families attractive in the search for new allelopathic compounds. In the study reported here we evaluated the bioactivity profiles of four triterpenes (1-4) and six limonoids (5-10) from Meliaceae and Rutaceae. The compounds were assessed in a wheat coleoptile bioassay and those that had the highest activities were tested on the standard target species Lepidium sativum (cress), Lactuca sativa (lettuce), Lycopersicon esculentum (tomato) and Allium cepa (onion). Limonoids showed phytotoxic activity and 5 alpha,6 beta,8 alpha,12 alpha-tetrahydro-28-norisotoonafolin (10) and gedunin (5) were the most active, with bioactivity levels similar to, and in some cases better than, those of the commercial herbicide Logran. The results indicate that these products could also be allelochemicals involved in the ecological interactions of these plant species. (AU)

FAPESP's process: 08/08170-4 - STUDY OF Schinus terebinthifolius, Anacardium humile AND Macairea urundeuva IN THE LEAF-CUTTING ANTS CONTROL
Grantee:Liliane Nebo
Support type: Scholarships in Brazil - Doctorate