Fusicoccin, 14-3-3 Proteins, and Defense Responses in Tomato Plants1
AUTOR(ES)
Roberts, Michael R.
FONTE
American Society of Plant Physiologists
RESUMO
Fusicoccin (FC) is a fungal toxin that activates the plant plasma membrane H+-ATPase by binding with 14-3-3 proteins, causing membrane hyperpolarization. Here we report on the effect of FC on a gene-for-gene pathogen-resistance response and show that FC application induces the expression of several genes involved in plant responses to pathogens. Ten members of the FC-binding 14-3-3 protein gene family were isolated from tomato (Lycopersicon esculentum) to characterize their role in defense responses. Sequence analysis is suggestive of common biochemical functions for these tomato 14-3-3 proteins, but their genes showed different expression patterns in leaves after challenges. Different specific subsets of 14-3-3 genes were induced after treatment with FC and during a gene-for-gene resistance response. Possible roles for the H+-ATPase and 14-3-3 proteins in responses to pathogens are discussed.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=32008Documentos Relacionados
- 14-3-3 proteins in apoptosis
- Two tomato fruit homologs of 14-3-3 mammalian brain proteins.
- 14-3-3 Proteins Form a Guidance Complex with Chloroplast Precursor Proteins in Plants
- Positive Regulation of Wee1 by Chk1 and 14-3-3 Proteins
- Phosphorylated Nitrate Reductase and 14-3-3 Proteins1 : Site of Interaction, Effects of Ions, and Evidence for an AMP-Binding Site on 14-3-3 Proteins
