斯特里戈拉克顿抑制了豆中的结节发育和衰老
Judith Van Dingenen1,2, Annick De Keyser1,2, Sandrien Desmet1,2,3
1Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052, Ghent, Belgium.
The Plant journal : for cell and molecular biology
|August 23, 2023
概括
斯特里戈拉克顿会影响豆类结节的发育. 突变者表现出更大,更快成熟的结节,这表明杆菌素调节结节的生长,可能是通过NIN和植物糖.
科学领域:
- 植物生物学 植物生物学
- 分子植物病原体相互作用
背景情况:
- 斯特里戈拉克顿是关键的植物激素,调节各种发育过程.
- 它们在豆类结节发育中的确切作用尚不清楚,尽管已知对结节数的影响.
研究的目的:
- 调查strigolactone生物合成和信号突变物对Pisum sativum (豆类) 结节生长和发育的影响.
主要方法:
- 使用的Pisum sativum ramosus (rms) 突变影响着纹状素通路 (生物合成:rms1,rms5;信号传递:rms3,rms4).
- 分析了结节的形态,大小,功能 (红色结节) 和发育区域.
- 通过代谢学评估结节调节器的表达 NODULE INCEPTION (NIN) 和量化糖和酸水平.
主要成果:
- 与野生类型植物相比,菌素突变 (rms) 的功能性 (红色) 结节显著更大,更多.
- 在rms突变中的结节显示出加速发育,其特征是较大的固定/衰老区域和较小的系统/感染区域.
- 在rms突变结节中观察到增强的NIN表达,与加速发育和改变的代谢特征相关 (酸增加,糖减少).
结论:
- 斯特里戈拉克顿在调节豆类结节的发育中起着至关重要的作用,促进平衡的生长和成熟.
- 观察到的效应可能通过NIN途径进行调解,并受到植物糖的可用性影响.
- 斯特里戈拉克顿信号影响结节衰老和碳分配在根豆共生.
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