STRESS INDUCED FACTOR 2 Regulates Arabidopsis Stomatal Immunity through Phosphorylation of the Anion Channel SLAC1
| Autor: | Tzu Chuan Chin, Yoshiyuki Murata, Tai Yuan Huang, Dario Panzeri, Ching Chan, Guan Yu Louh, Yu Hung Yeh, You Huei Huang, Shweta Yekondi, Kadri Tõldsepp, Laurent Zimmerli, Ya-Yun Wang, Eiji Okuma, Tzyy-Jen Chiou, Hannes Kollist, Hung Ling Yeh |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Receptor complex biology fungi Pattern recognition receptor Cell Biology Plant Science biology.organism_classification 01 natural sciences Cell biology 03 medical and health sciences chemistry.chemical_compound 030104 developmental biology chemistry Arabidopsis Guard cell bacteria Phosphorylation Arabidopsis thaliana Kinase activity Abscisic acid 010606 plant biology & botany |
| Zdroj: | The Plant Cell. 32:2216-2236 |
| ISSN: | 1532-298X 1040-4651 |
| DOI: | 10.1105/tpc.19.00578 |
| Popis: | Upon recognition of microbes, pattern recognition receptors (PRRs) activate pattern-triggered immunity. FLAGELLIN SENSING2 (FLS2) and BRASSINOSTEROID INSENSITIVE1-ASSOCIATED KINASE1 (BAK1) form a typical PRR complex that senses bacteria. Here, we report that the kinase activity of the malectin-like receptor-like kinase STRESS INDUCED FACTOR 2 (SIF2) is critical for Arabidopsis (Arabidopsis thaliana) resistance to bacteria by regulating stomatal immunity. SIF2 physically associates with the FLS2-BAK1 PRR complex and interacts with and phosphorylates the guard cell SLOW ANION CHANNEL1 (SLAC1), which is necessary for abscisic acid (ABA)-mediated stomatal closure. SIF2 is also required for the activation of ABA-induced S-type anion currents in Arabidopsis protoplasts, and SIF2 is sufficient to activate SLAC1 anion channels in Xenopus oocytes. SIF2-mediated activation of SLAC1 depends on specific phosphorylation of Ser 65. This work reveals that SIF2 functions between the FLS2-BAK1 initial immunity receptor complex and the final actuator SLAC1 in stomatal immunity. |
| Databáze: | OpenAIRE |
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