CsTCP14-CsIAA4模块介导的生长素信号抑制调控柑橘体细胞胚胎发生

IF 8.7 1区 生物学 Q1 PLANT SCIENCES New Phytologist Pub Date : 2025-03-19 Epub Date: 2025-02-17 DOI:10.1111/nph.20442
Peng-Bo Wang, Yao-Yuan Duan, Ru-Meng Quan, Meng-Qi Feng, Jie Ren, Yong-Yu Tang, Mei Qing, Kai-Dong Xie, Wen-Wu Guo, Xiao-Meng Wu
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引用次数: 0

摘要

体细胞胚胎发生（Somatic embryogenesis， SE）是植物体外再生的重要途径，特别是在生物技术操作中。然而，SE能力很难调节，并且会随着时间的推移而恶化。甘油培养基对柑橘的SE诱导有效，但机制尚不清楚。研究发现，将柑橘胚性愈伤组织（EC）转移到甘油培养基后，生长素信号传导迅速减少，CsTCP14和AUX/IAA基因CsIAA4的表达受到甘油的诱导。编码稳定的吲哚-3-乙酸（IAA）蛋白的CsIAAm过表达可抑制EC中生长素信号传导，并增强SE。CsTCP14结合CsIAA4的启动子，激活CsIAA4在EC中的表达，具有较强的SE能力。CsTCP14过表达激活CsIAA4表达，降低柑橘EC中生长素信号，从而增强SE。外源IAA对SE有抑制作用，而生长素信号抑制剂对氯苯氧异丁酸（PCIB）对SE有促进作用。外源IAA可减轻CsIAA4和CsTCP14过表达对EC的SE增强作用，而PCIB可增强CsIAA4和CsTCP14过表达对EC的SE增强作用。我们发现了CsTCP14-CsIAA4模块介导的柑橘SE的生长素信号抑制通路，加深了我们对植物SE机制的理解，并支持了通过生物技术手段调节柑橘SE的育种。
本文章由计算机程序翻译，如有差异，请以英文原文为准。

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CsTCP14-CsIAA4 module-mediated repression of auxin signaling regulates citrus somatic embryogenesis

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New Phytologist
New Phytologist 生物-植物科学
自引率
5.30%
发文量
728
期刊介绍： New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.
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