Responses of Ribulose-1,5-bisphosphate carboxylase, protein content, and stomatal conductance to water deficit in maize, tomato, and bean

M. Castrillo; D. Fernandez; A. M. Calcagno; I. Trujillo; L. Guenni

doi:10.1023/A:1013731210309

Responses of Ribulose-1,5-bisphosphate carboxylase, protein content, and stomatal conductance to water deficit in maize, tomato, and bean

M. Castrillo, D. Fernandez, A. M. Calcagno, I. Trujillo, L. Guenni

Research output: Contribution to journal › Article › peer-review

Abstract

We compared responses of maize, tomato, and bean plants to water stress. Maize reached a severe water deficit (leaf water potential -1.90 MPa) in a longer period of time as compared with tomato and bean plants. Maize stomatal conductance (g_s) decreased at mild water deficit. g_s of tomato and bean decreased gradually and did not reach values as low as in maize. The protein content was maintained in maize and decreased at low water potential (ψw); in tomato it fluctuated and also decreased at low ψw; in bean it gradually decreased. Ribulose-1,5-bisphosphate carboxylase/oxygenase activity remained high at mild and moderate stress in maize and tomato plants; in bean it remained high only at mild stress.

Original language	English (US)
Pages (from-to)	221-226
Number of pages	6
Journal	Photosynthetica
Volume	39
Issue number	2
DOIs	https://doi.org/10.1023/A:1013731210309
State	Published - 2001
Externally published	Yes

Keywords

Lycopersicum esculentum
Phaseolus vulgaris
Protein
Water potential
Zea mays

ASJC Scopus subject areas

Physiology
Plant Science

Online availability

10.1023/A:1013731210309

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AU - Fernandez, D.

AU - Calcagno, A. M.

AU - Trujillo, I.

AU - Guenni, L.

PY - 2001

Y1 - 2001

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AB - We compared responses of maize, tomato, and bean plants to water stress. Maize reached a severe water deficit (leaf water potential -1.90 MPa) in a longer period of time as compared with tomato and bean plants. Maize stomatal conductance (gs) decreased at mild water deficit. gs of tomato and bean decreased gradually and did not reach values as low as in maize. The protein content was maintained in maize and decreased at low water potential (ψw); in tomato it fluctuated and also decreased at low ψw; in bean it gradually decreased. Ribulose-1,5-bisphosphate carboxylase/oxygenase activity remained high at mild and moderate stress in maize and tomato plants; in bean it remained high only at mild stress.

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Responses of Ribulose-1,5-bisphosphate carboxylase, protein content, and stomatal conductance to water deficit in maize, tomato, and bean

Abstract

Keywords

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