Plant small heat shock proteins during different stress conditions other than heat. Comparative analysis between Arabidopsis thaliana and Solanum lycopersicum

ARCE, DÉBORA; RE, MARTÍN DAMIÁN; BOGGIO, SILVANA BEATRIZ; VALLE, ESTELA MARTA

Oro Verde, Paraná, Entre Ríos

Congreso; 3er Congreso Bioinformática 3CA2B2C; 2012

A2B2C

Small heat shock proteins (sHSPs) are chaperones that play an important role in abiotic and biotic stress tolerance. The special importance of sHSPs in plants is suggested by their unusual abundance and they are found in different cellular compartments1. Furthermore, some sHSPs are also expressed during certain stages of development2. In this study Arabidopsis thaliana and Solanum lycopersicum were used as model plants. Previous findings allowed us to identify heat shock proteins (HSPs), heat shock factors (Hsfs) and sHSPs genes up-regulated under oxidative stress mediated by methyl viologen (MV) in Arabidopsis3. In addition, tomato sHSPs were induced in red fruit compared to green fruit4. All these results allowed us to perform an in silico strategy for analyzing the regulation of sHSPs gene expression. Three sHSPs promoter sequences from mitochondrial LeHsp23.8-M, cytosolic LeHsp17.7-CI and cytosolic LeHsp17.4-CII were analyzed.