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Titolo:
Defensive role of leaf trichomes in resistance to herbivorous insects in Datura stramonium
Autore:
Valverde, PL; Fornoni, J; Nunez-Farfan, J;
Indirizzi:
Univ Autonoma Metropolitana, Dept Biol, Unidad Iztapalapa, Mexico City 09340, DF, Mexico Univ Autonoma Metropolitana Mexico City DF Mexico 09340 09340, DF, Mexico Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Evolut, Mexico City 04510,DF, Mexico Univ Nacl Autonoma Mexico Mexico City DF Mexico 04510 ty 04510,DF, Mexico Univ Connecticut, Dept Ecol & Evolutionary Biol, Storrs, CT 06269 USA UnivConnecticut Storrs CT USA 06269 lutionary Biol, Storrs, CT 06269 USA
Titolo Testata:
JOURNAL OF EVOLUTIONARY BIOLOGY
fascicolo: 3, volume: 14, anno: 2001,
pagine: 424 - 432
SICI:
1010-061X(200105)14:3<424:DROLTI>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
GLANDULAR TRICHOMES; NATURAL-SELECTION; IPOMOEA-PURPUREA; EVOLUTIONARY ECOLOGY; GENETIC-VARIATION; PLANT-RESPONSES; BRASSICA-RAPA; MORNING GLORY; TOLERANCE; COEVOLUTION;
Keywords:
adaptation; Datura stramonium; defence; herbivory; leaf trichomes; phenotypic selection;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
72
Recensione:
Indirizzi per estratti:
Indirizzo: Valverde, PL Univ Autonoma Metropolitana, Dept Biol, Unidad Iztapalapa, Apartado Postal55-535, Mexico City 09340, DF, Mexico Univ Autonoma Metropolitana Apartado Postal 55-535 Mexico City DF Mexico 09340
Citazione:
P.L. Valverde et al., "Defensive role of leaf trichomes in resistance to herbivorous insects in Datura stramonium", J EVOL BIOL, 14(3), 2001, pp. 424-432

Abstract

This study assessed the role of leaf trichome density as a component of resistance to herbivores, in six populations of Datura stramonium. Phenotypicselection on plant resistance was estimated for each population. A common garden experiment was carried out to determine if population differences inleaf trichome density are genetically based. Among population differences in leaf trichome density, relative resistance and fitness were found. Leaf trichome density was strongly positively correlated to resistance across populations. In 5 out of 6 populations, trichome density was related to resistance, and positive directional selection on resistance to herbivores was detected in three populations. Differences among populations in mean leaf trichome density in the common garden suggest genetic differentiation for this character in Datura stramonium. The results are considered in the light of the adaptive role of leaf trichomes as a component of defence to herbivores, and variable selection among populations.

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Documento generato il 29/09/20 alle ore 10:29:42