alexa 2D-PAGE of Cashew Stem Coupled to LC ESI Q-TOF MS/MS Reveals Abundance of Antioxidant Enzymes and Heat Shock Proteins, Compatible with the Crop Adaptation to the Semi-Arid Conditions of Tropical Countries
ISSN: 2155-9872

Journal of Analytical & Bioanalytical Techniques
Open Access

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Research Article

2D-PAGE of Cashew Stem Coupled to LC ESI Q-TOF MS/MS Reveals Abundance of Antioxidant Enzymes and Heat Shock Proteins, Compatible with the Crop Adaptation to the Semi-Arid Conditions of Tropical Countries

Darcy MF Gondim1,2, Ilka M Vasconcelos1, Frederico BMB Moreno2, Ana CO Monteiro-Moreira2, Jose H Araújo-Filho1, Jeferson Segalin3, Paulo M Pinto4, Célia RRS Carlini3, Jose E Cardoso5 and Jose TA Oliveira1*

1Department of Biochemistry and Molecular Biology, Federal University of Ceará, Brazil

2University of Fortaleza (UNIFOR) – Ceará, Brazil

3Department of Biophysics and Center of Biotechnology, Federal University of Rio Grande do Sul, Brazil

4Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, RS, Brazil

5Brazilian Agricultural Research Corporation, Tropical Agroindustry Research Center (EMBRAPA), Brazil

*Corresponding Author:
Jose TA Oliveira
Department of Biochemistry and Molecular Biology
Federal University of Ceará, Brazil
Tel: +55 85 33669823
Fax: +55 85 33669789
E-mail: [email protected]

Received date: June 17, 2014; Accepted date: July 14, 2014; Published date: July 16, 2014

Citation: Gondim DMF, Vasconcelos IM, Moreno FBMB, Monteiro-Moreira ACO, Araújo-Filho JH, et al. (2014) 2D-PAGE of Cashew Stem Coupled to LC ESI Q-TOF MS/MS Reveals Abundance of Antioxidant Enzymes and Heat Shock Proteins, Compatible with the Crop Adaptation to the Semi-Arid Conditions of Tropical Countries. J Anal Bioanal Techniques S6:004. doi: 10.4172/2155-9872.S6-004

Copyright: © 2014 Gondim DMF, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Cashew crop grown in the semi-arid conditions of tropical countries produces cashew nut, an important commodity both for internal consumption and exportation. Cashew is very well adapted to abiotic stresses such as drought, high temperature, high salinity, and solar radiation predominant in the environmental regions where cashew is cultivated. Besides cashew is threatened by a great variety of fungal diseases amongst them gummosis caused by the devastating fungus Lasiodiploidea theobromae that has increased its severity in all northeastern Brazil producing states. Therefore there is a great interest in understanding the biochemical/physiological traits associated with both the climate adaptation of cashew and the resistance/susceptibility to L. theobromae.
This paper reports on the evaluation of a proteomic approach to study the proteins of the cashew stems, a recalcitrant plant tissue, where the L. theobromae infection establishes. After testing different methods for extracting proteins from cashew stems, the precipitation with trichloroacetic acid/acetone combined with the use of an optimized phenol extraction method produced a cashew protein sample free of interfering compounds that showed a highquality 2D-PAGE pattern. The extraction method devised allowed the fractionation of approximately 615 spots from which 130 proteins were identified. Of them 31% are related to plant disease/defense, which is consistent with the excellent fit of cashew to the semi-arid conditions. Therefore, this pioneering map derived from CCP (Premature Cashew Clone) 76, a semiarid-tolerant cashew clone, provides the basis for further investigations of cashew physiology such as detection of genetic reprogramming induced by biotic and abiotic stresses.

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