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Apple MdZAT5 mediates root development under drought stress

文献类型： 外文期刊

作者： Zhang, Yutian 1 ; He, Jieqiang 1 ; Qin, Gege 1 ; Yang, Kecheng 1 ; Chen, Pengxiang 4 ; Niu, Chundong 1 ; Li, Xuewei 1 ; Mei, Chuang 5 ; Wang, Jiangbo 3 ; Guan, Qingmei 1 ; Bao, Chana 1 ;

作者机构： 1.Northwest A&F Univ, Coll Hort, State Key Lab Crop Stress Resistance & High Effici, Shaanxi Key Lab Apple, Yangling, 712100, Shaanxi, Peoples R China

2.Northwest A&F Univ, Coll Life Sci, Yangling 712100, Peoples R China

3.Tarim Univ, Coll Plant Sci, Aral 843300, Peoples R China

4.Shanxi Normal Univ, Coll Life Sci, Linfen, Peoples R China

5.Xinjiang Acad Agr Sci, Inst Hort Crops, Key Lab Genome Res & Genet Improvement Xinjiang Ch, Xinjiang Fruit Sci Expt Stn, Urumqi, Peoples R China

关键词： Apple ( malus x domestica ); Drought stress; MdZAT5; Root development

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：6.1； 五年影响因子：6.2 ）

ISSN： 0981-9428

年卷期： 2024 年 213 卷

页码：

收录情况： SCI

摘要： Root plays an important role in plant drought tolerance, especially in horticultural crops like apples. However, the crucial regulator and molecular mechanism in root development of apple trees under drought are not well unknown. Cys2/His2-type Zinc-finger proteins are essential for plant response to drought, while the members of C2H2 Zinc-finger proteins in apple are largely unknown. In this study, we identified the members of the C1-2i subclass family of C2H2 Zinc-finger proteins in apple (Malus x domestica). Among them, MdZAT5 is significantly induced in apple roots under drought conditions and positively regulates apple root development under drought. Further investigation revealed that MdZAT5 positively regulates root development and root hydraulic conductivity by mediating the transcription level of MdMYB88 under drought stress. Taken together, our results demonstrate the importance of MdZAT5 in root development under drought in apple trees. This finding provides a new candidate direction for apple breeding for drought resistance.

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