http://oar.icrisat.org/id/eprint/11589 2020-09-04T17:03:35Z info:eu-repo/semantics/descriptiveMetadata http://oar.icrisat.org/11589/ Characterization of ASR gene and its role in drought tolerance in chickpea (Cicer arietinum L.) Baisakh, N Sachdeva, S Bharadwaj, C Singh, R K Jain, P K Patil, B S Roorkiwal, M Varshney, R K Chickpea Genetics and Genomics Chickpea has a profound nutritional and economic value in vegetarian society. Continuous decline in chickpea productivity is attributed to insufficient genetic variability and different environmental stresses. Chickpea like several other legumes is highly susceptible to terminal drought stress. Multiple genes control drought tolerance and ASR gene plays a key role in regulating different plant stresses. The present study describes the molecular characterization and functional role of Abscissic acid and stress ripening (ASR) gene from chickpea (Cicer arietinum) and the gene sequence identified was submitted to NCBI Genbank (MK937569). Molecular analysis using MUSCLE software proved that the ASR nucleotide sequences in different legumes show variations at various positions though ASR genes are conserved in chickpea with only few variations. Sequence similarity of ASR gene to chickpea putative ABA/WDS induced protein mRNA clearly indicated its potential involvement in drought tolerance. Physiological screening and qRT-PCR results demonstrated increased ASR gene expression under drought stress possibly enabled genotypes to perform better under stress. Conserved domain search, protein structure analysis, prediction and validation, network analysis using Phyre2, Swiss-PDB viewer, ProSA and STRING analysis established the role of hypothetical ASR protein NP_001351739.1 in mediating drought responses. NP_001351739.1 might have enhanced the ASR gene activity as a transcription factor regulating drought stress tolerance in chickpea. This study could be useful in identification of new ASR genes that play a major role in drought tolerance and also develop functional markers for chickpea improvement. Public Library of Science 2020-07 Article PeerReviewed application/pdf en http://oar.icrisat.org/11589/1/file.pdf Baisakh, N and Sachdeva, S and Bharadwaj, C and Singh, R K and Jain, P K and Patil, B S and Roorkiwal, M and Varshney, R K (2020) Characterization of ASR gene and its role in drought tolerance in chickpea (Cicer arietinum L.). PLOS ONE (TSI), 15 (7). pp. 1-25. ISSN 1932-6203 https://doi.org/10.1371/journal.pone.0234550 doi:10.1371/journal.pone.0234550 info:eu-repo/semantics/objectFile info:eu-repo/semantics/humanStartPage