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. 2016 Jul 27;28(8):1966–1983. doi: 10.1105/tpc.16.00201

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© 2016 American Society of Plant Biologists. All rights reserved.

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Figure 9. — Model of the Relationship among 2-Hydroxy Sphingolipids, PM Microdomains, and Innate Immunity in Rice.

Os-FAH1 and Os-FAH2, which are localized in the ER membrane, synthesize 2-hydroxy sphingolipids, which contribute to the organization of PM microdomains. After chitin treatment, Os-Rac1 and Os-RbohB/H assemble in microdomains, where Os-RbohB/H are activated by their interaction with GTP-bound Os-Rac1. This promotes the generation of ROS, leading to resistance to rice blast fungus infection.