文献类型： 外文期刊
作者： Zhou, Wenqi 1 ; Yin, Jun 2 ; Zhou, Yuqian 1 ; Li, Yongsheng 1 ; He, Haijun 1 ; Yang, Yanzhong 1 ; Wang, Xiaojuan 1 ; Lian, Xiaorong 1 ; Dong, Xiaoyun 1 ; Ma, Zengke 1 ; Chen, Liang 2 ; Hou, Suiwen 2 ;
作者机构： 1.Gansu Acad Agr Sci, Crop Res Inst, Maize Res Ctr Gansu Prov, Lanzhou 730070, Peoples R China
2.Lanzhou Univ, Sch Life Sci, Key Lab Cell Act & Stress Adaptat, Key Lab Gene Editing Breeding,Minist Educ, Lanzhou 730000, Gansu, Peoples R China
关键词：
drought tolerance; maize; stomata; stomatal development;
期刊名称：JOURNAL OF INTEGRATIVE PLANT BIOLOGY （ 影响因子：9.3； 五年影响因子：10.8 ）
ISSN： 1672-9072
年卷期： 2025 年 67 卷 6 期
页码：
收录情况： SCI
摘要： Maize (Zea mays L.) growth and yield are severely limited by drought stress worldwide. Stomata play crucial roles in transpiration and gas exchange and are thus essential for improving plant water-use efficiency (WUE) to help plants deal with the threat of drought. In this study, we characterized the maize dsd1 (decreased stomatal density 1) mutant, which showed defects in stomatal development, including guard mother cell differentiation, subsidiary cell formation and guard cell maturation. DSD1 encodes the basic helix-loop-helix transcription factor INDUCER OF CBF EXPRESSION b (ZmICEb) and is a homolog of ICE1 in Arabidopsis (Arabidopsis thaliana). DSD1/ZmICEb is expressed in stomatal file cells throughout stomatal development and plays a conserved role in stomatal development across maize and Arabidopsis. Mutations in DSD1/ZmICEb dramatically improved drought tolerance and WUE in maize and reduced yield losses under drought conditions. Therefore, DSD1/ZmICEb represents a promising candidate target gene for the genetic improvement of drought tolerance in maize by manipulating stomatal density.
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