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Chemical differentiation of plant latexes and their anti-herbivory activity against thrips Frankliniella occidentalis (#)
- Source :
- Planta Medica, 87(12/13), 1032-1044. GEORG THIEME VERLAG KG
- Publication Year :
- 2021
-
Abstract
- Despite the extensive studies on latex, some fundamental questions on their chemical specialization and the factors influencing this specialization have yet to be investigated. To address this issue, latexes and their bearing tissues from diverse species were profiled by 1HNMR and GC-MS. Additionally, the antiherbivory activity of these materials was tested against thrips (Frankliniella occidentalis Pergande, 1895). The multivariate data analysis showed a clear separation between latexes and leaves from the same species. Conversely, the chemical profiles of latexes from different species were highly similar, that is, they displayed much less metabolic species-specificity. These shared chemical profiles of latexes were reflected in their overall higher mortality index (80.4% ± 7.5) against thrips compared with their bearing tissues (55.5% ± 14.9). The metabolites correlated to the antiherbivory activity of latexes were triterpenoids and steroids. However, the activity could not be attributed to any single terpenoid. This discrepancy and the reduction of the latex activity after fractionation suggested a complementary effect of the compounds when in a mixture as represented by the latex. Additionally, aqueous fractions of several latexes were found to possess simple spectra, even with only 1 metabolite. These metabolites were determined to be organic acids that might be involved in the modulation of the rate of latex coagulation, potentially increasing the sealing and trapping effects of the latex.
- Subjects :
- 0106 biological sciences
Latex
Metabolite
Pharmaceutical Science
Fractionation
01 natural sciences
Analytical Chemistry
Terpene
03 medical and health sciences
chemistry.chemical_compound
Drug Discovery
Animals
Herbivory
Food science
030304 developmental biology
Pharmacology
0303 health sciences
biology
Apocynaceae
Thrips
Chemistry
Thysanoptera
Organic Chemistry
Euphorbiaceae
Plants
biology.organism_classification
Moraceae
Terpenoid
Plant Leaves
Complementary and alternative medicine
Molecular Medicine
010606 plant biology & botany
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Planta Medica, 87(12/13), 1032-1044. GEORG THIEME VERLAG KG
- Accession number :
- edsair.doi.dedup.....f3e4475a6fe7fc758781701410636090