储存蛋白激活剂以依赖气的方式控制面包小麦中的谷物蛋白积累
Anne Plessis1,2, Catherine Ravel3, Thierry Risacher4
1Université Clermont Auvergne, INRAE, UMR1095 GDEC, 63000, Clermont Ferrand, France.
Scientific reports
|December 20, 2023
概括
储存蛋白激活剂 (SPA) 对小麦谷物蛋白质至关重要,特别是在低的情况下. 减少SPA降低了谷物蛋白度和总储存蛋白质,当气有限时.
科学领域:
- 植物分子生物学 植物分子生物学
- 农业科学 农业科学
- 生物化学 生物化学
背景情况:
- 谷物储存蛋白 (GSP) 基因表达是由转录因子 (TF) 调节的.
- 储存蛋白激活剂 (SPA) 是该网络中的一个关键的TF,但其在小麦 (Triticum aestivum L.) 中的作用尚未完全理解.
研究的目的:
- 调查SPA在小麦GSP法规中的作用.
- 确定SPA下调对GSP积累和基因表达在不同气条件下的影响.
主要方法:
- 产生了一条RNAi线来减少小麦SPA同类物质的表达.
- 在低和高供应下分析了RNAi线和零分离剂中的GSP积累和基因表达.
主要成果:
- 下调SPA降低了低,但不是高的谷物蛋白质度.
- 降低SPA表达导致每粒总GSP降低,并在低的情况下改变了GSP与白蛋白-环球蛋白比率.
- 观察到的GSP基因表达变化并不能完全解释GSP积累的减少,这表明SPA的转录后调节.
结论:
- SPA在调节小麦谷物的代谢中起着重要作用,特别是当是限制因素时.
- 除了转录调节之外,SPA影响了GSP合成,在有限的气条件下影响了谷物总蛋白质含量.
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