Transient pulse formation in jasmonate signaling pathway.
J Theor Biol
; 273(1): 188-96, 2011 Mar 21.
Article
en En
| MEDLINE
| ID: mdl-21194534
ABSTRACT
The jasmonate (JA) signaling pathway in plants is activated as defense response to a number of stresses like attacks by pests or pathogens and wounding by animals. Some recent experiments provide significant new knowledge on the molecular detail and connectivity of the pathway. The pathway has two major components in the form of feedback loops, one negative and the other positive. We construct a minimal mathematical model, incorporating the feedback loops, to study the dynamics of the JA signaling pathway. The model exhibits transient gene expression activity in the form of JA pulses in agreement with experimental observations. The dependence of the pulse amplitude, duration and peak time on the key parameters of the model is determined computationally. The deterministic and stochastic aspects of the pathway dynamics are investigated using both the full mathematical model and a reduced version of it. We also compare the mechanism of pulse formation with the known mechanisms of pulse generation in some bacterial and viral systems.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Transducción de Señal
/
Ciclopentanos
/
Oxilipinas
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
J Theor Biol
Año:
2011
Tipo del documento:
Article
País de afiliación:
India