Ramalingam, A and Kudapa, H and Pazhamala, L T and Garg, V and Varshney, R K (2015) Gene Expression and Yeast Two-Hybrid Studies of 1R-MYB Transcription Factor Mediating Drought Stress Response in Chickpea (Cicer arietinum L.). Frontiers in Plant Science, 6 (1117). 01-10. ISSN 1664-462X
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Abstract
Drought stress has been one of the serious constraints affecting chickpea productivity to a great extent. Genomics-assisted breeding has a potential to accelerate breeding precisely and efficiently. In order to do so, understanding the molecular mechanisms for drought tolerance and identification of candidate genes are crucial. Transcription factors (TFs) have important roles in the regulation of plant stress related genes. In this context, quantitative real time-PCR (qRT-PCR) was used to study the differential gene expression of selected TFs, identified from large-scale expressed sequence tags (ESTs) analysis, in contrasting drought responsive genotypes. Root tissues of ICC 4958 (tolerant), ICC 1882 (sensitive), JG 11 (elite), and JG 11+ (introgression line) were used for the study. Subsequently, a candidate single repeat MYB (1R-MYB) transcript that was remarkably induced in the drought tolerant genotypes under drought stress was cloned (coding sequence region for the 1R-MYB protein) and subjected to yeast two-hybrid (Y2H) analysis. The screening of a root cDNA library with Y2H using the 1R-MYB bait protein, identified three CDS encoding peptides namely, galactinol-sucrose galactosyltransferase 2, CBL (Calcineurin B-like)-interacting serine/threonine-protein kinase 25, and ABA responsive 17-like, which were confirmed by co-transformation in yeast. These findings provide preliminary insights into the ability of this 1R-MYB transcription factor to co-regulate drought tolerance mechanism in chickpea.
| Item Type: | Article |
|---|---|
| Divisions: | Research Program : Genetic Gains |
| CRP: | CGIAR Research Program on Grain Legumes |
| Uncontrolled Keywords: | Protein-protein interactions, Chickpea, Transcription factor, Drought, Stress tolerance, Signaling pathways |
| Subjects: | Mandate crops > Chickpea Others > Genetics and Genomics |
| Depositing User: | Mr Ramesh K |
| Date Deposited: | 26 Sep 2016 06:19 |
| Last Modified: | 09 Nov 2016 10:45 |
| URI: | http://oar.icrisat.org/id/eprint/9697 |
| Official URL: | http://dx.doi.org/10.3389/fpls.2015.01117 |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | AR is grateful for the Australia-India Early Career Fellowship by the Australian Academy of Science. This work has been undertaken as part of the CGIAR Research Program on Grain Legumes. ICRISAT is a member of CGIAR Consortium. |
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