转录因子GbTCP20通过调节ACC生物合成途径和素沉积,使植物具有抗枯的能力
Lu Wang1, Guilin Wang1, Feifei Wang2
1State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China; Engineering Research Center of Ministry of Education for Cotton Germplasm Enhancement and Application, Nanjing Agricultural University, Nanjing 210095, China.
概括
GbTCP20通过激活化学防御和素生产来增强棉花对Verticillium枯的抵抗力. 这种转录因子在植物对真菌病原体的免疫力中起着关键作用.
科学领域:
- 植物科学 植物科学
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 转录因子是植物对生物应激的特异性反应的关键. TEOSINTE BRANCHED 1, CYCLOIDEA 和增殖细胞因子 (TCP) 的转录因子对于植物对生物应激的特异性反应至关重要.
- Verticillium dahliae由于血管枯而导致大量作物损失,而TCP介导耐药性的分子机制尚不清楚.
研究的目的:
- 为了识别和描述Gossypium barbadense (棉花) 中的TCP转录因子,该因子参与了对Verticillium dahliae.的耐药性.
- 阐明GbTCP20调节对Verticillium wilt.防御途径的分子机制.
主要方法:
- 针对V. dahliae感染的GbTCP20的基因表达分析 (转录水平).
- 在棉花和阿拉比多普西斯中进行基因沉默和过度表达研究,以评估GbTCP20在耐药性中的作用.
- 促销者分析和双路西法酶报告员测定用于识别和验证下游目标基因 (GbERF4,GbCOMT).
- 测量棉花茎中的素含量.
主要成果:
- 在V. dahliae攻击时,GbTCP20表达显著升级.
- 沉默GbTCP20降低了棉花的抗性,而其在Arabidopsis中的过度表达增强了对枯的抗性.
- GbTCP20直接激活GbERF4 (参与ACC生物合成) 和GbCOMT (参与素生物合成) 的表达.
- 过度表达GbTCP20导致棉花茎中素含量增加.
结论:
- GbTCP20是棉花中Verticillium枯抗性的积极调节者.
- GbTCP20采用双重防御策略,增强ACC介导的化学防御和基于素的物理屏障.
- 这项研究为植物对真菌病原体免疫力的分子机制提供了新的见解.
关键词:
1-阿米诺cyclopropane-1-碳素酸的一种氨基cyclopropane-1-碳素酸.在GbTCP20中,GbTCP20是GbTCP20中的一个.这就是Gossypium barbadense的意思.氨酸生物合成 氨酸生物合成转录因子是一种转录因子.垂直的枯会导致垂直的枯更多相关视频
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