GhbZIP30-GhCCCH17 module accelerates corm dormancy release by reducing endogenous ABA under cold storage in Gladiolus
文献类型： 外文期刊
作者： Liang, Jia-hui 1 ; Li, Jing-ru 1 ; Liu, Chang 1 ; Pan, Wen-qiang 1 ; Wu, Wen-jing 1 ; Shi, Wen-jing 1 ; Wang, Lu-jia 1 ; Yi, Ming-fang 1 ; Wu, Jian 1 ;
作者机构： 1.China Agr Univ, Dept Ornamental Hort, Beijing Key Lab Dev & Qual Control Ornamental Crop, Beijing, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Inst Grassland Flowers & Ecol, Beijing, Peoples R China
3.China Agr Univ, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China
关键词： ABA; corm dormancy release; cold storage; GhbZIP30; GhCCCH17; Gladiolus; glucose
期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：7.3； 五年影响因子：8.1 ）
ISSN： 0140-7791
年卷期： 2023 年 46 卷 7 期
页码：
收录情况： SCI
摘要： Gladiolus hybridus is one of the most popular flowers worldwide. However, its corm dormancy characteristic largely limits its off-season production. Long-term cold treatment (LT), which increases sugar content and reduces abscisic acid (ABA), is an efficient approach to accelerate corm dormancy release (CDR). Here, we identified a GhbZIP30-GhCCCH17 module that mediates the antagonism between sugars and ABA during CDR. We showed that sugars promoted CDR by reducing ABA levels in Gladiolus. Our data demonstrated that GhbZIP30 transcription factor directly binds the GhCCCH17 zinc finger promoter and activates its transcription, confirmed by yeast one-hybrid, dual-luciferase (Dual-LUC), chromatin immunoprecipitation-quantitative PCR (ChIP-qPCR) and electrophoretic mobility shift assay (EMSA). GhCCCH17 is a transcriptional activator, and its nuclear localisation is altered by glucose and cytokinin treatments. Both GhbZIP30 and GhCCCH17 positively respond to LT, sugars, and cytokinin treatments. Silencing GhbZIP30 or GhCCCH17 resulted in delayed CDR by regulating ABA metabolic genes, while their overexpression promoted CDR. Taken together, we propose that the GhbZIP30-GhCCCH17 module is involved in cold- and glucose-induced CDR by regulating ABA metabolic genes.
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