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No. de sistema: 000056955

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040 _ _ a| ECO
c| ECO
043 _ _ a| n-mx-yu
044 _ _ a| uk
245 0 0 a| Environmental influence on the inter- and intraspecific variation in the density and morphology of stomata and trichomes of epiphytic bromeliads of the Yucatan Peninsula
506 _ _ a| Acceso electrónico sólo para usuarios de ECOSUR
520 1 _ a| We set out to test whether trichome and stomata variation in epiphytic bromeliads in the field would support the hypothesis that trichomes confer protection from excess light, increase water absorption and protect the stomata. We characterized the intra- and interspecific plasticity in the morphology and density of trichomes and stomata of 14 epiphytic bromeliad species found in six contrasting vegetation types (coastal sand dune scrub, scrub mangrove, pet en mangrove, and deciduous, semi-deciduous and semi-evergreen forest) on the Yucatan Peninsula along a precipitation gradient from 500 to 1500 mm (mean annual precipitation). We performed leaf impressions to determine trichome and stomatal density and to characterize morphology. Trichome morphology did not show variation between sites, but was distinctive for the species. Our data supported the existing hypothesis that trichome density and area were higher in the atmospheric species that inhabited the drier sites, compared with the wetter extreme, which may confer higher protection against photoinhibition and desiccation. Stomatal density increased with precipitation in tank species, and negatively correlated with vapour pressure deficit during the dry season. Fewer trichomes and greater numbers of stomata than expected by rainfall were found in mangroves that maintained low vapour pressure deficit during the dry season.
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Bromelia
650 _ 4 a| Morfología vegetal
650 _ 4 a| Variables ambientales
651 _ 4 a| Yucatán (Península) (México)
700 1 _ a| Cach Pérez, Manuel Jesús
n| 56053068400
700 1 _ a| Andrade, José L.
e| coaut.
700 1 _ a| Cetzal Ix, William Rolando
e| coaut.
700 1 _ a| Reyes García, Casandra
e| coaut.
773 0 _
t| Botanical Journal of the Linnean Society
g| Vol. 181, no. 3 (July 2016), p. 441–458
x| 1095-8339
901 _ _ a| Artículo con arbitraje
902 _ _ a| VEA / MM
904 _ _ a| Marzo 2016
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| Biblioelectrónica
906 _ _ a| Producción Académica ECOSUR
LNG eng
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Environmental influence on the inter- and intraspecific variation in the density and morphology of stomata and trichomes of epiphytic bromeliads of the Yucatan Peninsula
Cach Pérez, Manuel Jesús (autor)
Andrade, José L. (autor)
Cetzal Ix, William Rolando (autor)
Reyes García, Casandra (autor)
Nota: Acceso electrónico sólo para usuarios de ECOSUR
Contenido en: Botanical Journal of the Linnean Society. Vol. 181, no. 3 (July 2016), p. 441–458. ISSN: 1095-8339
No. de sistema: 56955
Tipo: - Artículo con arbitraje
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"We set out to test whether trichome and stomata variation in epiphytic bromeliads in the field would support the hypothesis that trichomes confer protection from excess light, increase water absorption and protect the stomata. We characterized the intra- and interspecific plasticity in the morphology and density of trichomes and stomata of 14 epiphytic bromeliad species found in six contrasting vegetation types (coastal sand dune scrub, scrub mangrove, pet en mangrove, and deciduous, semi-deciduous and semi-evergreen forest) on the Yucatan Peninsula along a precipitation gradient from 500 to 1500 mm (mean annual precipitation). We performed leaf impressions to determine trichome and stomatal density and to characterize morphology. Trichome morphology did not show variation between sites, but was distinctive for the species. Our data supported the existing hypothesis that trichome density and area were higher in the atmospheric species that inhabited the drier sites, compared with the wetter extreme, which may confer higher protection against photoinhibition and desiccation. Stomatal density increased with precipitation in tank species, and negatively correlated with vapour pressure deficit during the dry season. Fewer trichomes and greater numbers of stomata than expected by rainfall were found in mangroves that maintained low vapour pressure deficit during the dry season."


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