MPK6-LTF1L1模块通过与Populus LTF1不同的机制调节大米中的红素生物合成
概括
与大米LTF1L1相比,大米LTF1L1通过不同的机制负面调节红素生物合成,而大米LTF1L1则通过不同的机制负面调节红素生物合成. 通过OsMPK6进行酸化会损害LTF1L1的功能.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 氨酸是一种重要的植物聚合物,用于结构支持和防御.
- 虽然LTF1控制双叶植物 (Populus) 的红素生物合成,但对单叶植物 (大米) 的调节是未知的.
研究的目的:
- 研究LTF1同类物 (LTF1L1) 在米色素生物合成中的作用和机制.
- 将LTF1L1的调节功能与Populus LTF1.1进行比较.
主要方法:
- 基因分析 (LTF1L1的淘汰和过度表达).
- 细胞和化学方法来评估红素含量.
- 酸化位点分析和突变研究 (LTF1L1^S169A).
主要成果:
- LTF1L1淘汰赛增加了大米胆细胞中的素合成;过度表达减少了它.
- 在Ser169中,OsMPK6酸化LTF1L1,降低其抑制素生物合成基因的能力.
- 非化LTF1L1 (LTF1L1^S169A) 显示在米和Populus中增强了抑制.
结论:
- 通过一种新的机制,LTF1L1作为大米中素生物合成的负调节剂.
- 由OsMPK6进行酸化是LTF1L1独特调节功能的关键.
- 在植物素生物合成调节方面存在显著的进化分歧.
更多相关视频
11:33Investigating Interactions Between Histone Modifying Enzymes and Transcription Factors in vivo by Fluorescence Resonance Energy Transfer
Published on: October 14, 2022
1.6K
11:31High-throughput Screening of Recalcitrance Variations in Lignocellulosic Biomass: Total Lignin, Lignin Monomers, and Enzymatic Sugar Release
Published on: September 15, 2015
10.0K
相关概念视频
Cell Signaling in Plants
5.7K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.7K
Riboswitches
8.1K
Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
8.1K
