芽突变通过部署MYB41和bHLH93重新编程了朱中的黄类生物合成
Juan Jin1, Lili Li1, Dingyu Fan1
1The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China.
Plant physiology and biochemistry : PPB
|May 12, 2024
概括
朱植物的芽突变通过调节PAL和DFR等关键基因来改变水果代谢. 这项研究确定了MYB41和bHLH93转录因子作为调节剂,为培育改进的朱品种铺平了道路.
科学领域:
- 植物遗传学 植物遗传学
- 代谢学 代谢学 代谢学
- 分子生物学分子生物学
背景情况:
- 芽突变可以诱导果实作物如朱果的代谢变化.
- 驱动这些代谢变化的精确分子机制在很大程度上是未知的.
研究的目的:
- 与其父 (S1) 相比,阐明一条朱芽突变线 (S2) 的代谢格局和调节机制.
- 为了确定关键的基因和转录因子,负责S2水果的代谢变化.
主要方法:
- 在所有水果发育阶段进行多组学分析 (基因组学,转录组学,代谢组学).
- 同表达调节网络分析以确定转录因子-基因相互作用.
- 基因过度表达实验以验证调节作用.
主要成果:
- 在S2水果中,参与黄类,类和氨基酸生物合成 (如PAL,DFR) 的基因显著上调.
- 鉴定转录因子MYB41和bHLH93作为PAL和DFR的潜在直接调节者.
- MYB41或bHLH93的过度表达证实了它们在重定向代谢流向S2中相关化合物的高积累方面发挥的作用.
结论:
- 朱的芽突变导致由特定的基因调节网络驱动的独特的代谢特征.
- MYB41和bHLH93是S2. 2中黄类和类类生物合成的关键调节剂.
- 这些发现为利用芽突变线来培育具有增强代谢特征的优质朱果品种提供了基础.
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