ZmCBF3 overexpression improves tolerance to abiotic stress in transgenic rice (Oryza sativa) without yield penalty

文献类型: 外文期刊

第一作者: Xu, Miaoyun

作者: Xu, Miaoyun;Li, Luhui;Fan, Yunliu;Wang, Lei;Li, Luhui;Wan, Jianmin

作者机构:

关键词: Abiotic stress tolerance;CBF;Transgenic plants;Transcriptional activator;Rice

期刊名称:PLANT CELL REPORTS ( 影响因子:4.57; 五年影响因子:4.463 )

ISSN: 0721-7714

年卷期: 2011 年 30 卷 10 期

页码:

收录情况: SCI

摘要: Plant productivity is greatly affected by environmental stresses such as drought, salt, and freezing. We previously described a C-repeat binding transcription factor from maize (ZmCBF3) that was upregulated by both abscisic acid and low-temperature and actively expressed during embryogenesis. To understand the stress response in rice, transgenic ZmCBF3 rice with ubiquitin promoter was developed. T3 generation was planted and analyzed. The results showed that overexpression of ZmCBF3 in rice did not cause growth retardation under normal growth conditions with improved tolerance to drought, high-salt, and low-temperature stresses. Moreover, the transgenic rice grain yield was similar to wild type plants under normal conditions. The transgenic plants showed enhanced survival rate and reduced malondialdehyde content and relative conductivity under drought, salt, and low-temperature stresses. ZmCBF3 overexpression in transgenic rice increased the transcript levels of stress-induced genes and enhanced the tolerance to drought, salt, and low-temperature stresses.

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