Characterization and phylogenetic analysis of environmental stress-responsive SAP gene family encoding A20/AN1 zinc finger proteins in tomato |
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Authors: | Amolkumar U. Solanke Manoj K. Sharma Akhilesh K. Tyagi Arun Kumar Sharma |
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Affiliation: | (1) Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India;(2) Present address: National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India |
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Abstract: | Characterization of genes responsive to stress is important for efforts on improving stress tolerance of plants. To address components involved in stress tolerance of tomato (Solanum lycopersicum), a stress-responsive gene family encoding A20/AN1 zinc finger proteins was characterized. In the present study, 13 members of this gene family were cloned from tomato cultivar Pusa Ruby and named as Stress Associated Protein (SAP) genes. Out of 13 genes, 12 have been mapped on their respective chromosomes. Expression of these genes in response to cold, heat, salt, desiccation, wounding, abscisic acid, oxidative and submergence stresses was analysed. All tomato SAP genes were found to be responsive to one or other type of environmental stress. The phylogenetic analysis of these genes, along with their orthologs from Solanaceae species suggests the presence of a common set of SAP genes in the studied Solanaceae species. The present study characterizes a SAP gene family, which encodes A20/AN1 zinc finger containing proteins from tomato for the first time. Genes showing high expression in response to a particular stress can be exploited for improving stress tolerance of tomato and other Solanaceae members. Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. |
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Keywords: | A20 AN1 Solanaceae Stress Zinc finger |
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