Measured leaf dark respiratory CO2 -release is not controlled by stomatal conductance.
Physiol Plant
; 176(2): e14245, 2024.
Article
em En
| MEDLINE
| ID: mdl-38450764
ABSTRACT
Leaf dark respiratory CO2 -release (RD ) is, according to some literature, dependent on the rate of leaf transpiration. If this is true, then at a given vapor pressure deficit, the leaf stomatal conductance (gs ) will be expected to be a controlling factor of measured RD at any given time. We artificially lowered leaf gs by applying abscisic acid (ABA). Although leaf RD generally covaried temporally with gs , artificially lowering gs by applying ABA does not affect the measured leaf RD . These results indicate that observed diel fluctuations in gs are not directly influencing the measured leaf RD , thereby simplifying both future studies and the interpretation of past studies of the underlying environmental- and physiological drivers of temporal variation in leaf RD .
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dióxido de Carbono
/
Ácido Abscísico
/
Folhas de Planta
Idioma:
En
Revista:
Physiol Plant
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Dinamarca