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GDSL lipase-like 1 regulates systemic resistance associated with ethylene signaling in Arabidopsis

Authors
Kwon, Sun JaeJin, Hak ChulLee, SoohyunNam, Myung HeeChung, Joo HeeIl Kwon, SoonRyu, Choong-MinPark, Ohkmae K.
Issue Date
Apr-2009
Publisher
WILEY
Keywords
Arabidopsis; GDSL lipase; systemic resistance; ethylene; salicylic acid; jasmonic acid
Citation
PLANT JOURNAL, v.58, no.2, pp.235 - 245
Indexed
SCIE
SCOPUS
Journal Title
PLANT JOURNAL
Volume
58
Number
2
Start Page
235
End Page
245
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/120293
DOI
10.1111/j.1365-313X.2008.03772.x
ISSN
0960-7412
Abstract
Systemic resistance is induced by necrotizing pathogenic microbes and non-pathogenic rhizobacteria and confers protection against a broad range of pathogens. Here we show that Arabidopsis GDSL LIPASE-LIKE 1 (GLIP1) plays an important role in plant immunity, eliciting both local and systemic resistance in plants. GLIP1 functions independently of salicylic acid but requires ethylene signaling. Enhancement of GLIP1 expression in plants increases resistance to pathogens including Alternaria brassicicola, Erwinia carotovora and Pseudomonas syringae, and limits their growth at the infection site. Furthermore, local treatment with GLIP1 proteins is sufficient for the activation of systemic resistance, inducing both resistance gene expression and pathogen resistance in systemic leaves. The PDF1.2-inducing activity accumulates in petiole exudates in a GLIP1-dependent manner and is fractionated in the size range of less than 10 kDa as determined by size exclusion chromatography. Our results demonstrate that GLIP1-elicited systemic resistance is dependent on ethylene signaling and provide evidence that GLIP1 may mediate the production of a systemic signaling molecule(s).
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