Turgidity-dependent petiole flexibility enables efficient water use by a tree subjected to water stress.
J Theor Biol
; 398: 20-31, 2016 06 07.
Article
en En
| MEDLINE
| ID: mdl-26992577
ABSTRACT
Water stress is a major cause of tree mortality. In response to drought, leaves wilt due to an increase in petiole flexibility. We present an analytical model coupling petiole mechanics, thermal balance, and xylem hydraulics to investigate the role of petiole flexibility in protecting a tree from water stress. Our model suggests that turgidity-dependent petiole flexibility can significantly attenuate the minimal xylem pressure and thus reduce the risk of cavitation. Moreover, we show that petiole flexibility increases water use efficiency by trees under water stress.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Árboles
/
Agua
/
Hojas de la Planta
Idioma:
En
Revista:
J Theor Biol
Año:
2016
Tipo del documento:
Article