Biological Activity of Acyl Glucose Esters from Datura wrightii Glandular Trichomes against Three Native Insect Herbivores

2005 ◽  
Vol 31 (7) ◽  
pp. 1475-1491 ◽  
Author(s):  
J. Daniel Hare
Keyword(s):  
Biological Activity ◽  
Glandular Trichomes ◽  
Insect Herbivores ◽  
Datura Wrightii

scholarly journals Spectral properties, gas exchange, and water potential of leaves of glandular and non-glandular trichome types in Datura wrightii (Solanaceae)

2004 ◽  
Vol 31 (3) ◽  
pp. 267 ◽  
Author(s):  
James L. Smith II ◽  
J. Daniel Hare
Keyword(s):  
Gas Exchange ◽  
Spectral Properties ◽  
Glandular Trichomes ◽  
Chemical Defence ◽  
Geographic Location ◽  
Glandular Trichome ◽  
Datura Wrightii ◽  
Significant Difference ◽  
Sticky Plants ◽  
Trichome Types

Plant trichomes commonly serve a role in mechanical and chemical defence against herbivores, but may also have the potential to alter physiology by reducing the amount of light absorbed by leaves, lowering temperatures, and reducing water loss. Populations of Datura wrightii Regel in southern California produce 'sticky' plants with glandular trichomes and 'velvety' plants bearing non-glandular trichomes. Because stickiness is inherited as a dominant Mendelian trait, and the proportions of sticky plants vary among populations with the moisture availability of their environment, there may be some ecophysiological differences between trichome types that contribute to their ability to survive in a particular geographic location. To examine the possible physiological significance of trichome variation, we measured the spectral properties, midday gas-exchange rates, and water potentials of D. wrightii leaves from sticky and velvety plants growing in a field experiment. The differences in leaf reflectance (0.9%) and absorptance (1.3%) of photosynthetically active radiation (PAR) between trichome types are too small to have any direct physiologically significant effect. Simulations of leaf temperatures based on the difference in leaf absorptances reveal that leaf temperature would be no more than 1°C lower in velvety compared to sticky plants. Gas-exchange measurements revealed no significant difference between types in their transpiration rates or stomatal conductances. In this case, trichome variation may be more important to plant defenses than to physiology.

Characterization of Secondary Metabolites, Biological Activity and Glandular Trichomes ofStachys tymphaeaHausskn. from the Monti Sibillini National Park (Central Apennines, Italy)

2014 ◽  
Vol 11 (2) ◽  
pp. 245-261 ◽  
Author(s):  
Alessandro Venditti ◽  
Armandodoriano Bianco ◽  
Marcello Nicoletti ◽  
Luana Quassinti ◽  
Massimo Bramucci ◽  
...  
Keyword(s):  
Biological Activity ◽  
Secondary Metabolites ◽  
National Park ◽  
Glandular Trichomes ◽  
Central Apennines

Secondary Metabolites, Glandular Trichomes and Biological Activity ofSideritis montanaL. subsp.montanafrom Central Italy

2016 ◽  
Vol 13 (10) ◽  
pp. 1380-1390 ◽  
Author(s):  
Alessandro Venditti ◽  
Armandodoriano Bianco ◽  
Claudio Frezza ◽  
Mauro Serafini ◽  
Ginevra Giacomello ◽  
...  
Keyword(s):  
Biological Activity ◽  
Secondary Metabolites ◽  
Glandular Trichomes ◽  
Central Italy

Cost of Glandular Trichomes, A "Resistance" Character in Datura wrightii Regel (Solanaceae)

Evolution ◽  
1999 ◽  
Vol 53 (1) ◽  
pp. 22 ◽  
Author(s):  
Elizabeth Elle ◽  
Nicole M. van Dam ◽  
J. Daniel Hare
Keyword(s):  
Glandular Trichomes ◽  
Datura Wrightii

Plectranthus madagascariensis: Morphology of the Glandular Trichomes, Essential Oil Composition, and Its Biological Activity

1998 ◽  
Vol 159 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Lia Ascensão ◽  
A. Cristina Figueiredo ◽  
José G. Barroso ◽  
Luis G. Pedro ◽  
Jan Schripsema ◽  
...  
Keyword(s):  
Biological Activity ◽  
Essential Oil ◽  
Glandular Trichomes ◽  
Essential Oil Composition ◽  
Oil Composition

Glandular trichomes as an inflorescence defence mechanism against insect herbivores in Iberian columbines

Oecologia ◽  
2012 ◽  
Vol 172 (4) ◽  
pp. 1051-1060 ◽  
Author(s):  
Rafael Jaime ◽  
Pedro J. Rey ◽  
Julio M. Alcántara ◽  
Jesús M. Bastida
Keyword(s):  
Glandular Trichomes ◽  
Insect Herbivores ◽  
Defence Mechanism

COSTS OF GLANDULAR TRICHOMES IN DATURA WRIGHTII: A THREE-YEAR STUDY

Evolution ◽  
2003 ◽  
Vol 57 (4) ◽  
pp. 793 ◽  
Author(s):  
J. Daniel Hare ◽  
Elizabeth Elle ◽  
Nicole M. van Dam
Keyword(s):  
Glandular Trichomes ◽  
Datura Wrightii

Activity of volatile compounds in glandular trichomes ofLycopersicon species against two insect herbivores

1987 ◽  
Vol 13 (4) ◽  
pp. 837-850 ◽  
Author(s):  
Sarah Y. H. Lin ◽  
John T. Trumble ◽  
Junji Kumamoto
Keyword(s):  
Volatile Compounds ◽  
Glandular Trichomes ◽  
Insect Herbivores
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