Allelopathic potential of Tagetes minuta terpenes by a chemical, anatomical and phytotoxic approach
By M. L. López, N. E. Bonzani, J. Zygadlo. 2008
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Abstract The dominant terpenes in the essential oils of the leaves and reproductive structures of Tagetes minuta L. (Asteraceae) were studied throughout its life cycle in a natural population. The anatomy of the secretory cavities was described in order to correlate the changes in terpene content with structural changes. Finally, the phytotoxic effect of ocimenones on germination was also evaluated. Monoterpenes increased in both green leaves and reproductive structures throughout the plant's life cycle, whereas the opposite occurred in senescent leaves. Spathulenol was the main component in senescing leaves. The highest content of ocimenones, the bioactive components of the essential oil, was found in the reproductive structures. Bioassays showed that both pure ocimenones and fruit material from T. minuta delayed and inhibited the germination of cohabitant species. A relationship between allelopathy, biosynthesis, catabolism and terpene release is proposed for the chemical ecological effect of T. minuta.
Subfields: Ecology, Evolution, Behavior and Systematics, Plant Science
View Paper: https://www.semanticscholar.org/paper/aa75fd3936cf215ba877a3968f330f330c6c201b
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In Plant Science
Citations in the corpus
- Phytotoxic potential of essential oils from temperate climate plants against the germination of selected weeds and crops (2017, background): “Oxygenated monoterpenes, mainly alcohols and ketones, have been classified by other authors as predictors of the herbicidal activities of essential oils (López et al. 2009; Verdeguer et al. 2009; Mutlu et al. 2010).”