Direct transcriptional control of the Arabidopsis immune receptor FLS2 by the ethylene-dependent transcription factors EIN3 and EIL1

作者：Boutrot Freddy; Segonzac Cecile; Chang Katherine N; Qiao Hong; Ecker Joseph R; Zipfel Cyril^*; Rathjen John P

来源：Proceedings of the National Academy of Sciences, 2010, 107(32): 14502-14507.

DOI：10.1073/pnas.1003347107

• innate immunity
• receptor kinase

In plant innate immunity, the leucine-rich repeat receptor kinase FLS2 recognizes the bacterial pathogen-associated molecular pattern (PAMP) flagellin. The molecular mechanisms underlying PAMP perception are not fully understood. Here, we reveal that the gaseous phytohormone ethylene is an integral part of PAMP-triggered immunity. Plants mutated in the key ethylene-signaling protein EIN2 are impaired in all FLS2-mediated responses, correlating with reduced FLS2 transcription and protein accumulation. The EIN3 and EIN3-like transcription factors, which depend on EIN2 activity for their accumulation, directly control FLS2 expression. Our results reveal a direct role for ethylene in regulation of an innate immune receptor.

• 出版日期2010-8-10