Photoprotective mechanisms during leaf ontogeny: cuticular development and anthocyanin deposition in two morphs of Agave striata that differ in leaf coloration

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:06Z
Fecha de publicación2009-01-01
ResumenOur objectives were to test whether in Agave striata Zucc., a plant with crassulacean acid metabolism (CAM plant), leaf wax development is a delayed response to sunlight exposure following cutin development, and whether energy dissipation shifts from non-photochemical quenching to photochemical quenching during leaf ontogeny. Under field conditions, photosynthesis, cuticular development, and anthocyanin deposition were studied in two morphs of A. striata that differ in leaf coloration (green vs. red). We quantified leaf anthocyanin, wax, and cutin content, and also measured chlorophyll a fluorescence and leaf surface temperature. In addition, using three leaf reflectance indices, we measured relative chlorophyll and anthocyanin content, and also xanthophyl I-cycle de-epoxidation state (xanthophyll conversion). Our results revealed that the main components of cuticle (wax and cutin) in leaves of A. striata are deposited during different developmental windows, which are similar to leaves of monocots such as grasses. Exposure to sunlight was found to be the most likely candidate to affect wax and anthocyanin deposition. Chlorophyll a fluorescence data revealed that the sunlight conditions experienced by both morphs predisposed the young leaves of the green morph and old leaves of both morphs to photoinhibition. Our results also revealed that old leaves of the red morph, which contain a reduced level of chlorophyll and anthocyanin, had additional photoprotection via xanthophyll conversion. The results presented here support the photoprotective function of leaf anthocyanins and wax accumulation during leaf ontogeny, indicating that their presence may compensate for the reduced dependence of non-photochemical quenching and the xanthophyll-cycle pigment conversion.es_ES
Doihttps://doi.org/10.1139/b09-076es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/4935
Idiomaenes_ES
EditorialNATL RESEARCH COUNCIL CANADA-N R C RESEARCH PRESSes_ES
RelaciónBotany-Botaniquees_ES
URL relacionadohttps://doi.org/10.1139/b09-076es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteBotany-Botanique
Palabra claveAgave striataes_ES
Palabra claveanthocyanines_ES
Palabra clavewaxes_ES
Palabra clavecutines_ES
Palabra clavePSII quantum yieldes_ES
Palabra clavexanthophyll cyclees_ES
Palabra claveleaf reflectancees_ES
TítuloPhotoprotective mechanisms during leaf ontogeny: cuticular development and anthocyanin deposition in two morphs of Agave striata that differ in leaf colorationes_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorFondom, Nicolas Y.
AutorCastro-Nava, Sergio
AutorHuerta, Alfredo J.
AutorFondom, Nicolas Y.es_ES
AutorCastro-Nava, Sergioes_ES
AutorHuerta, Alfredo J.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número12es_ES
Rango de páginas1186-1197es_ES
URL relacionadahttps://doi.org/10.1139/b09-076
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen87es_ES

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