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CmbZIP19通过桑花的黄铜化物通路抑制横向芽延长

Lingling Zhang¹, Xianrong Fu¹, Jingxuan Ye¹

¹State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Key Laboratory of Biology of Ornamental Plants in East China, National Forestry and Grassland Administration, Sanya Institute of Nanjing Agricultural University, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.

The Plant journal : for cell and molecular biology

|March 14, 2025

概括

寒冷压力通过CmbZIP19抑制花的分支,这是抑制花 (BR) 合成的转录因子. 这一发现阐明了在环境压力下调节植物架构的关键机制.

科学领域:

植物生物学植物生物学
分子生物学分子生物学
遗传学遗传学是一个

背景情况:

植物架构,由分支决定,对于适应至关重要.
寒冷压力通过抑制横向芽延长而影响植物生长,但机制尚不清楚.

研究的目的:

阐明冷应力影响香花侧向芽延长的分子机制.
为了确定关键的基因和途径,涉及冷诱导的抑制分支.

主要方法:

结合了RNA测序 (RNA-seq) 和DNA亲和净化测序 (DAP-seq) 来识别CmbZIP19的目标.
基因转换被用来证实CmDWF1在促进横向分支延长中的功能.
为了验证CmbZIP19-BR通路,使用了RNA干扰 (RNAi) 和类固醇 (BR) 治疗.

主要成果:

寒冷压力会诱导bZIP转录因子CmbZIP19,它可以抑制花的侧向芽延长.
CmbZIP19直接与CmDWF1的促进体结合,这是一种类固醇 (BR) 合成基因,抑制其表达.
CmDWF1促进横向分支的延长,而BR治疗可以在CmbZIP19沉默植物中拯救分支表型.

结论:

CmbZIP19通过在寒冷压力下抑制类固醇 (BR) 合成,作为植物结构的负调节剂.
这项研究揭示了一种新的机制,它将寒冷压力,转录因子活性,激素合成和植物发育联系起来.
了解这种途径为改善在恶劣环境条件下植物弹性和建筑提供了潜在的目标.

关键词:

花 morifolium 花 morifolium 花 morifolium 花 morifolium 花 morifolium 花 morifolium 花 morifolium 花 morifolium 花 morifolium 花 morifolium 花 morifolium 花黄铜化物黄铜化物植物建筑植物建筑植物环境相互作用相互作用

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