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- Title
Overexpression of <italic>HvCBF7</italic> and <italic>HvCBF9</italic> changes salt and drought tolerance in <italic>Arabidopsis</italic>.
- Authors
Yin, Shuya; Han, Yong; Huang, Lu; Hong, Ye; Zhang, Guoping
- Abstract
Crop yield losses due to the extreme environments have risen steadily over the past several decades, so it is quite imperative to develop the crop cultivars with high stress tolerance for ensuring global food security. Dehydration responsive element binding protein/C-repeat binding factor (DREB/CBF) transcription factors are widely concerned as key regulators, specifically in abiotic tolerance of plants. In this study, we found that barley <italic>CBF7</italic> and <italic>CBF9</italic> were induced by salt and drought stress. Over-expression of <italic>HvCBF7</italic> and <italic>HvCBF9</italic> enhanced salt tolerance, showing increased survival rate of <italic>Arabidopsis</italic> seedlings under salt stress, but reduced drought and salt tolerance in adult plants before flowering stage, as reflected by higher malondialdehyde and proline contents. The altered phenotype was due to differently regulating stress response genes. In addition, we also found that many genes expressing differently under salt stress were reversely regulated by <italic>AtCBF3</italic>, a transcription factor in <italic>Arabidopsis</italic>.
- Publication
Plant Growth Regulation, 2018, Vol 85, Issue 2, p281
- ISSN
0167-6903
- Publication type
Article
- DOI
10.1007/s10725-018-0394-4