Mechanisms underlying robustness and tunability in a plant immune signaling network.
Mechanisms underlying robustness and tunability in a plant immune signaling network.
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DOI:
10.1016/j.chom.2013.12.002
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发表时间:
2014-01-15
影响因子:
30.3
通讯作者:
Katagiri F
中科院分区:
文献类型:
--
作者:
Kim Y;Tsuda K;Igarashi D;Hillmer RA;Sakakibara H;Myers CL;Katagiri F
How does robust and tunable behavior emerge in a complex biological network? We sought to understand this for the signaling network controlling pattern-triggered immunity (PTI) in Arabidopsis. A dynamic network model containing four major signaling sectors, the jasmonate, ethylene, PAD4, and salicylate sectors, which together explain up to 80% of the PTI level, was built using data for dynamic sector activities and PTI levels under exhaustive combinatorial sector perturbations. Our regularized multiple regression model had a high level of predictive power and captured known and unexpected signal flows in the network. The sole inhibitory sector in the model, the ethylene sector, was central to the network robustness via its inhibition of the jasmonate sector. The model's multiple input sites linked specific signal input patterns varying in strength and timing to different network response patterns, indicating a mechanism enabling tunability.
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