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FEBS Lett. 2014 May 2;588(9):1652-8. doi: 10.1016/j.febslet.2014.02.062. Epub 2014 Mar 12.

GDSL lipase 1 regulates ethylene signaling and ethylene-associated systemic immunity in Arabidopsis.

Author information

1
Division of Life Sciences, Korea University, Seoul 136-701, Republic of Korea.
2
Environment and Metabolomics Research Team, Korea Basic Science Institute, Seoul 136-701, Republic of Korea.
3
Division of Life Sciences, Korea University, Seoul 136-701, Republic of Korea. Electronic address: omkim@korea.ac.kr.

Abstract

Arabidopsis GDSL lipase 1 (GLIP1) has been shown to modulate systemic immunity through the regulation of ethylene signaling components. Here we demonstrate that the constitutive triple response mutant ctr1-1 requires GLIP1 for the ethylene response, gene expression, and pathogen resistance. The glip1-1 mutant was defective in induced resistance following primary inoculation of necrotrophic pathogens, whereas GLIP1-overexpressing plants showed resistance to multiple pathogens. Necrotrophic infection triggered the downregulation of EIN3 and the activation of ERF1 and SID2 in a GLIP1-dependent manner. These results suggest that GLIP1 positively and negatively regulates ethylene signaling, resulting in an ethylene-associated, necrotroph-induced immune response.

KEYWORDS:

EIN3; ERF1; Ethylene; GLIP1; Salicylic acid; Systemic immunity

PMID:
24631536
DOI:
10.1016/j.febslet.2014.02.062
[Indexed for MEDLINE]
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