MbICE1 Confers Drought and Cold Tolerance through Up-Regulating Antioxidant Capacity and Stress-Resistant Genes in Arabidopsis thaliana
文献类型： 外文期刊
作者： Duan, Yadong 1 ; Han, Jiaxin 4 ; Guo, Baitao 1 ; Zhao, Wenbo 1 ; Zhou, Shuang 1 ; Zhou, Chunwei 1 ; Zhang, Lei 1 ; Li, Xingguo 4 ; Han, Deguo 4 ;
作者机构： 1.Heilongjiang Acad Agr Sci, Inst Rural Revitalizat Sci & Technol, Harbin 150028, Peoples R China
2.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Harbin 150081, Peoples R China
3.Huma Cold Temperate Zone Expt Stn Conservat & Util, Daxinganling 165000, Peoples R China
4.Northeast Agr Univ, Coll Hort & Landscape Architecture, Natl Local Joint Engn Res Ctr Dev & Utilizat Small, Key Lab Biol & Genet Improvement Hort Crops Northe, Harbin 150030, Peoples R China
关键词： Malus baccata (L; ) Borkh; MbICE1; drought stress; cold stress
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）
ISSN：
年卷期： 2022 年 23 卷 24 期
页码：
收录情况： SCI
摘要： Malus baccata (L.) Borkh is an apple rootstock with good drought and cold resistance. The ICE gene is a key factor in the molecular mechanisms of plant drought and cold resistance. In the present research, the function of drought- and cold-induced MbICE1 of Malus baccata was investigated in Arabidopsis. According to GFP fluorescence images, MbICE1 was determined to be a nuclear protein. The MbICE1 was transferred to Arabidopsis, showing enhanced tolerance to drought and cold stresses. Under drought and cold treatments, the transgenic Arabidopsis had higher chlorophyll content and free proline content than WT plants, but the Malondialdehyde (MDA) content and electrolyte leakage (EL) were lower than those of WT plants. In addition, drought and cold led to a large accumulation of ROS (H2O2 and O2-) content in Arabidopsis, while overexpression of MbICE1 enhanced the antioxidant enzyme activity in Arabidopsis and improved the plant's resistance to stresses. Moreover, the accumulation of MbICE1 promoted the expression of AtCBF1, AtCBF2, AtCBF3, AtCOR15a, AtCOR47 and AtKIN1 genes in Arabidopsis. These data indicate that MbICE1 is a key regulator of drought and cold and can be used as a backup gene for breeding Malus rootstocks.
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