Transient pulse formation in jasmonate signaling pathway.
J Theor Biol
; 273(1): 188-96, 2011 Mar 21.
Article
in 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.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Signal Transduction
/
Cyclopentanes
/
Oxylipins
Type of study:
Prognostic_studies
Language:
En
Journal:
J Theor Biol
Year:
2011
Document type:
Article
Affiliation country: