Abstract:
:A mechanistic model of the Fitzhugh-Nagumo type is proposed for the pulse-like jasmonate response in plants. The model is composed of a bistable signaling pathway coupled to a negative feedback loop. The bistable signaling pathway describes a recently discovered positive feedback loop involving jasmonate and the MYC2 transcription factor regulating promoter activity during plant defense. The negative feedback loop is assumed to reflect a second jasmonate-dependent signaling pathway that is also used for ethylene signaling. The impact of the negative feedback loop is to destroy the high-level jasmonate fixed-point of the bistable jasmonate/MYC2 module. As a result, the high-level state becomes a ghost attractor and the jasmonate defense response becomes pulse-like.
journal_name
Math Bioscijournal_title
Mathematical biosciencesauthors
Chiangga S,Pornkaveerat W,Frank TDdoi
10.1016/j.mbs.2016.01.001subject
Has Abstractpub_date
2016-03-01 00:00:00pages
80-90eissn
0025-5564issn
1879-3134pii
S0025-5564(16)00002-Xjournal_volume
273pub_type
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