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TitleSugar signaling regulation by Arabidopsis SIZ1-driven sumoylation is independent of salicylic acid
Author(s)Castro, P. H.
Verde, N.
Tavares, R. M.
Bejarano, E. R.
Azevedo, Herlânder Anselmo Queirós Pereira
post-germination growth arrest
salicylic acid
Issue date2018
PublisherTaylor & Francis
JournalPlant Signaling & Behavior
CitationPedro Humberto Castro, Nuno Verde, Rui Manuel Tavares, Eduardo Rodríguez Bejarano & Herlânder Azevedo (2018): Sugar signaling regulation by Arabidopsis SIZ1-driven sumoylation is independent of salicylic acid, Plant Signaling & Behavior, DOI: 10.1080/15592324.2016.1179417
Abstract(s)SUMO is a modifying peptide that regulates protein activity and is essential to eukaryotes. In plants, SUMO plays an important role in both development and the response to environmental stimuli. The best described sumoylation pathway component is the SUMO E3 ligase SIZ1. Its mutant displays inefficient responses to nutrient imbalance in phosphate, nitrate and copper. Recently, we reported that siz1 also displays altered responses to exogenous sugar supplementation. The siz1 mutant is a salicylic acid (SA) accumulator, and SA may interfere with sugar-dependent responses and signaling events. Here, we extended our previous studies to determine the importance of SA in the SIZ1 response to sugars, by introducing the bacterial salicylate hydroxylase NahG into the siz1 background. Results demonstrate that siz1 phenotypes involving delayed germination are partially dependent of SA levels, whereas the sugar-signaling effect of sugars is independent of SA.
AccessRestricted access (Author)
Appears in Collections:CBFP - Artigos/Papers
DBio - Artigos/Papers

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