Lee_2009_Biochem.Biophys.Res.Commun_379_1038

Reference

Title : Arabidopsis GDSL lipase 2 plays a role in pathogen defense via negative regulation of auxin signaling - Lee_2009_Biochem.Biophys.Res.Commun_379_1038
Author(s) : Lee DS , Kim BK , Kwon SJ , Jin HC , Park OK
Ref : Biochemical & Biophysical Research Communications , 379 :1038 , 2009
Abstract :

GLIP1 was isolated previously from Arabidopsis, as a salicylic acid-responsive secreted GDSL lipase that functions in resistance to Alternaria brassicicola [I.S. Oh, A.R. Park, M.S. Bae, S.J. Kwon, Y.S. Kim, J.E. Lee, N.Y. Kang, S. Lee, H. Cheong, O.K. Park, Secretome analysis reveals an Arabidopsis lipase involved in defense against Alternaria brassicicola. Plant Cell 17 (2005) 2832-2847.]. To extend our knowledge of the roles played by GLIPs in Arabidopsis, we conducted functional studies of another family member, GLIP2. GLIP2 transcripts were expressed in young seedlings, as well as in the root and stem tissues of mature plants. GLIP2 transcript levels were elevated by treatment with salicylic acid, jasmonic acid and ethylene. Recombinant GLIP2 proteins possessed lipase and anti-microbial activities, inhibiting germination of fungal spores. In comparison to wild type plants, T-DNA insertion glip2 mutants exhibited enhanced auxin responses, including increased lateral root formation and elevated AUX/IAA gene expression. When challenged with the necrotropic bacteria Erwinia carotovora, glip2 mutants exhibited more susceptible phenotypes than wild type plants. These results suggest that GLIP2 plays a role in resistance to Erwinia carotovora via negative regulation of auxin signaling.

PubMedSearch : Lee_2009_Biochem.Biophys.Res.Commun_379_1038
PubMedID: 19146828

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Citations formats

Lee DS, Kim BK, Kwon SJ, Jin HC, Park OK (2009)
Arabidopsis GDSL lipase 2 plays a role in pathogen defense via negative regulation of auxin signaling
Biochemical & Biophysical Research Communications 379 :1038

Lee DS, Kim BK, Kwon SJ, Jin HC, Park OK (2009)
Biochemical & Biophysical Research Communications 379 :1038