GLABRA 2 regulates ETHYLENE OVERPRODUCER 1 accumulation during nutrient deficiency-induced root hair growth
文献类型： 外文期刊
作者： Cheng, Jianing 1 ; Wang, Jinshu 1 ; Bi, Shuangtian 1 ; Li, Mingyang 1 ; Wang, Lina 1 ; Wang, Lu 2 ; Li, Tong 4 ; Zhang, Xiaolan 4 ; Gao, Yue 1 ; Zhu, Lei 5 ; Wang, Che 1 ;
作者机构： 1.Shenyang Agr Univ, Coll Biosci & Biotechnol, Shenyang 110866, Peoples R China
2.Tianjin Acad Agr Sci, Inst Germplasm Resource & Biotechnol, Tianjin 300384, Peoples R China
3.Tianjin Acad Agr Sci, State Key Lab Vegetable Biobreeding, Tianjin 300392, Peoples R China
4.Shenyang Agr Univ, Coll Hort, Shenyang 110866, Peoples R China
5.China Agr Univ, Coll Biol Sci, State Key Lab Plant Physiol & Biochem, Beijing 100083, Peoples R China
期刊名称：PLANT PHYSIOLOGY （ 影响因子：7.4； 五年影响因子：8.7 ）
ISSN： 0032-0889
年卷期： 2024 年
页码：
收录情况： SCI
摘要： Root hairs (RHs), extensive structures of root epidermal cells, are important for plant nutrient acquisition, soil anchorage, and environmental interactions. Excessive production of the phytohormone ethylene (ET) leads to substantial root hair growth, manifested as tolerance to plant nutrient deficiencies. However, the molecular basis of ET production during root hair growth in response to nutrient starvation remains unknown. Herein, we found that a critical transcription factor, GLABRA 2 (GL2), inhibits ET production during root hair growth in Arabidopsis (Arabidopsis thaliana). GL2 directly binds to the promoter of the gene encoding ET OVERPRODUCER 1 (ETO1), one of the most important ET-production-regulation factors, in vitro and in vivo, and then regulates the accumulation and function of ETO1 in root hair growth. The GL2-regulated-ETO1 module is required for promoting root hair growth under nitrogen, phosphorus, or potassium deficiency. Genome-wide analysis revealed numerous genes, such as ROOT HAIR DEFECTIVE 6-LIKE 4, ETHYLENE-INSENSITIVE 3-LIKE 2, ROOT HAIR SPECIFIC 13, are involved in the GL2-regulated-ETO1 module. Our work reveals a key transcription mechanism in the control of ET production during root hair growth under three major nutrient deficiencies. GLABRA 2 regulates the accumulation of ETHYLENE OVERPRODUCER 1 to mediate ethylene production in root hair growth response to three major nutrient deficiencies.
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