Changes in photosynthetic rate and stress volatile emissions through desiccation-rehydration cycles in desiccation-tolerant epiphytic filmy ferns (Hymenophyllaceae)

Primer Autor
Niinemets, Ulo
Co-autores
Bravo, Leon A.#Copolovici, Lucian
Título
Changes in photosynthetic rate and stress volatile emissions through desiccation-rehydration cycles in desiccation-tolerant epiphytic filmy ferns (Hymenophyllaceae)
Editorial
WILEY
Revista
PLANT CELL AND ENVIRONMENT
Lenguaje
en
Resumen
Exposure to recurrent desiccation cycles carries a risk of accumulation of reactive oxygen species that can impair leaf physiological activity upon rehydration, but changes in filmy fern stress status through desiccation and rewatering cycles have been poorly studied. We studied foliage photosynthetic rate and volatile marker compounds characterizing cell wall modifications (methanol) and stress development (lipoxygenase [LOX] pathway volatiles and methanol) through desiccation-rewatering cycles in lower-canopy species Hymenoglossum cruentum and Hymenophyllum caudiculatum, lower- to upper-canopy species Hymenophyllum plicatum and upper-canopy species Hymenophyllum dentatum sampled from a common environment and hypothesized that lower canopy species respond more strongly to desiccation and rewatering. In all species, rates of photosynthesis and LOX volatile emission decreased with progression of desiccation, but LOX emission decreased with a slower rate than photosynthesis. Rewatering first led to an emission burst of LOX volatiles followed by methanol, indicating that the oxidative burst was elicited in the symplast and further propagated to cell walls. Changes in LOX emissions were more pronounced in the upper-canopy species that had a greater photosynthetic activity and likely a greater rate of production of photooxidants. We conclude that rewatering induces the most severe stress in filmy ferns, especially in the upper canopy species.
Tipo de Recurso
Artículo original
Description
FP7 Ideas: European Research Council, Grant/Award Number: 322603, European Commission through the European Regional Fund, Grant/Award Number: Center of Excellence EcolChange, Estonian Ministry of Science and Education, Grant/Award Number: IUT-8-3
doi
10.1111/pce.13201
Formato Recurso
pdf
Palabras Claves
desiccation kinetics# emission bursts# Hymenophyllaceae# lipoxygenase pathway volatiles# methanol# stress recovery
desiccation kinetics# emission bursts# Hymenophyllaceae# lipoxygenase pathway volatiles# methanol# stress recovery
Ubicación del archivo
http://dx.doi.org/10.1111/pce.13201
Categoría OCDE
Plant Sciences
Materias
cinética de desecación# ráfagas de emisiones# himenofiláceas# volátiles de la vía de la lipoxigenasa# metanol# recuperación del estrés
cinética de desecación# ráfagas de emisiones# himenofiláceas# volátiles de la vía de la lipoxigenasa# metanol# recuperación del estrés
Id de Web of Science
WOS:000435808900011
Título de la cita (Recomendado-único)
Changes in photosynthetic rate and stress volatile emissions through desiccation-rehydration cycles in desiccation-tolerant epiphytic filmy ferns (Hymenophyllaceae)
Identificador del recurso (Mandatado-único)
Artículo original
Versión del recurso (Recomendado-único)
version publicada
Editorial
WILEY
Revista/Libro
PLANT CELL AND ENVIRONMENT
Categoría WOS
Ciencias de las plantas
ISSN
0140-7791
Idioma
en
Referencia del Financiador (Mandatado si es aplicable-repetible)
European Research Council 322603
Descripción
FP7 Ideas: European Research Council, Grant/Award Number: 322603, European Commission through the European Regional Fund, Grant/Award Number: Center of Excellence EcolChange, Estonian Ministry of Science and Education, Grant/Award Number: IUT-8-3
Formato
pdf
Tipo de ruta
hibrida
Access Rights
acceso abierto
Derechos de acceso
acceso abierto
Página de inicio (Recomendado-único)
487
Página final (Recomendado-único)
499
Colecciones
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