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Transcriptome analysis in different rice cultivars provides novel insights into desiccation and salinity stress responses

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Title Transcriptome analysis in different rice cultivars provides novel insights into desiccation and salinity stress responses
 
Creator Shankar, Rama
Bhattacharjee, Annapurna
Jain, Mukesh
 
Subject Abiotic
Drought
Salt
 
Description Accepted date: 14 March 2016
Drought and salinity are the major environmental factors that affect rice productivity. Comparative transcriptome analysis between tolerant and sensitive rice cultivars can provide insights into the regulatory mechanisms involved in these stress responses. In this study, the comparison of transcriptomes of a drought-tolerant [Nagina 22 (N22)] and a salinity-tolerant (Pokkali) rice cultivar with IR64 (susceptible cultivar) revealed variable transcriptional responses under control and stress conditions. A total of 801 and 507 transcripts were exclusively differentially expressed in N22 and Pokkali rice cultivars, respectively, under stress conditions. Gene ontology analysis suggested the enrichment of transcripts involved in response to abiotic stress and regulation of gene expression in stress-tolerant rice cultivars. A larger number of transcripts encoding for members of NAC and DBP transcription factor (TF) families in N22 and members of bHLH and C2H2 TF families in Pokkali exhibited differential regulation under desiccation and salinity stresses, respectively. Transcripts encoding for thioredoxin and involved in phenylpropanoid metabolism were up-regulated in N22, whereas transcripts involved in wax and terpenoid metabolism were up-regulated in Pokkali. Overall, common and cultivar-specific stress-responsive transcripts identified in this study can serve as a helpful resource to explore novel candidate genes for abiotic stress tolerance in rice.
This work was financially supported by the core grant from the National Institute of Plant Genome Research (NIPGR) and Department of Biotechnology (DBT), Government of India, New Delhi. RS and AB acknowledge the grant of research fellowships from the DBT and the Council of Scientific and Industrial Research (CSIR), Government of India, New Delhi, respectively.
 
Date 2016-04-04T09:21:06Z
2016-04-04T09:21:06Z
2016
 
Type Article
 
Identifier Scientific Reports, 6: 23719
2045-2322
http://172.16.0.77:8080/jspui/handle/123456789/633
http://www.nature.com/articles/srep23719
10.1038/srep23719
 
Language en_US
 
Publisher Nature Publishing Group