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Overexpression of Antarctic CBF genes increased the stress tolerance in rice plants

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Title
Overexpression of Antarctic CBF genes increased the stress tolerance in rice plants
Authors
Lee, Jungeun
Byun, Mi Young
Kang, Yoonjee
Kim, Woo Taek
Lee, Hyoungseok
Subject
Antarctic;  Deschampsia antarctica; Rice
Issue Date
2014
Citation
Lee, Jungeun., et al. 2014. Overexpression of Antarctic CBF genes increased the stress tolerance in rice plants. 2014 International Symposium on Plant Sciecnes and Annual Conference of the Korean Society of Plant Biologist, Korea Research Institute of Bioscience & Biotechnology, Deajeon. 2014.11.6-7.
Abstract
C-repeat/dehydration-responsive element binding factors (CBF/DREBs) are a family of transcription factors that play a key role in regulating freezing tolerance, binding to the DRE/CRT cis-acting elelment commonly present in stress responsive genes in plant species. As a step towards understanding the stress response of antarctic vascular plants, we have researched CBF genes in Deschampsia antarctica, the only natural grass species colonized in the Maritime Antarctic, isolated CBF orthologs and developed the stress tolerant transgenic crop by overexpression of Deschampsia CBF genes (DaCBFs) in rice. For example, Transgenic over-expression of DaCBF7 in rice (pUBI::CBF7) resulted in a dramatic increase in tolerance to low-temperature stress, while the response high salinity or dehydration was not changed, suggesting that DaCBF7 gene is specifically related to cold tolerance response. To describe the cold-tolerance phenotype of the transgenic rice, we compared the transcriptome response between wild type rice and transgenic rices and identified a set of genes regulated by overexpression of DaCBFs in response to cold stress.
Conference Name
Korea Research Institute of Bioscience & Biotechnology
Conference Place
Deajeon
Conference Date
2014.11.6-7.
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