Altered expression levels of transcripts of GNAC TFs during drought stress in susceptible and tolerant cultivars of groundnut

•The physio-biochemical responses of drought-tolerant wild Arachis duranensis L. and susceptible nut cultivars in natural environments were investigated.•Under drought stress, diminution of RWC, Chlorophyll in GJG 22 whereas an increase in electrolytic leakage, proline, and osmotic potential in A.du...

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Bibliographic Details
Published in:	Plant stress (Amsterdam) Vol. 3; p. 100062
Main Authors:	Jacob, Feba, Mahatma, Mahesh, Deshmukh, Yogita, Kandoliya, Umesh K., Maraviya, G.V., Joshi, Meera, Vala, Ashish
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-01-2022 Elsevier
Subjects:	Differential gene expression Drought stress Groundnut NAC TFs NAC TFs OP TDS TW EL FW TF DW Differential gene expression Drought stress EC Groundnut RWC
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Summary:	•The physio-biochemical responses of drought-tolerant wild Arachis duranensis L. and susceptible nut cultivars in natural environments were investigated.•Under drought stress, diminution of RWC, Chlorophyll in GJG 22 whereas an increase in electrolytic leakage, proline, and osmotic potential in A.duranensis L was recorded.•In-silico retrieved ORF regions of GNAC TFs were utilized for qPCR where upregulation of nine GNAC TFs in A. duranensis L. while six gene(s) in GJG 22 were recorded. By modulating gene expression, transcription factors (TFs) play a key role in conferring drought resistance. During drought, NAC, one of the major plant-specific transcription factor families, is found to be substantially up-regulated, indicating that it influences the gene(s) involved in drought tolerance. The goal of this study was to get insight into how the drought-tolerant wild type A. duranensis and the susceptible variety GJG 22 altered their expression levels of GNAC TFs during drought and after re-watering. Physio-biochemical parameters like relative water content electrolytic leakage, chlorophyll content, osmotic potential, and proline content were examined, along with this differential gene expression, with eleven GNAC TF water stress- related genes were evaluated in both types at different stages. In the drought-tolerant cultivars, nine TF(s) were upregulated, whereas, six were up-regulated in GJG 22. Five GNAC TFs in A. duranensis and four in GJG22 were elevated post revival. The influence of drought and revival on physio-biochemical parameters and the degree of expression of GNAC genes, as well as the impact on drought tolerance in plants, is revealed by this finding. Insight into the mechanisms of drought resistance in groundnut might lead to new possibilities in crop development utilizing molecular breeding and biotechnology.
ISSN:	2667-064X 2667-064X
DOI:	10.1016/j.stress.2022.100062