bZIP转录因子PavbZIP6通过增加甜桃中的亚卜西酸来调节安托亚宁积累
Shilin Gai1, Bingyang Du1, Yuqin Xiao1
1Frontiers Science Center for Molecular Design Breeding, College of Horticulture, China Agricultural University, Beijing 100193, China.
International journal of molecular sciences
|September 28, 2024
概括
甜桃的安托西亚宁积累是由基本氨酸拉链6 (bZIP6) 调节的,它是对酸 (ABA) 的反应. 这种bZIPTF增强了安东素基因表达和ABA合成,揭示了一个新的调节机制.
科学领域:
- 植物分子生物学 植物分子生物学
- 果实生物化学 果实生物化学
- 基因规则 基因规则
背景情况:
- 基本氨酸拉链 (bZIP) 转录因子 (TFs) 是植物中氨酸积累的关键调节者.
- 酸 (ABA) 也促进了酸生物合成,但bZIP TFs和ABA在这个过程中的相互作用仍然不清楚.
研究的目的:
- 调查bZIPTFs在甜桃中ABA诱导的安东素积累中的作用.
- 阐明这种调节背后的分子机制.
主要方法:
- 使用BLAST在甜桃中的bZIP基因的全基因组识别.
- 在bZIP6操纵 (过度表达/中断) 之后,对ABA和安东相关基因的基因表达分析.
- 酵母单杂交和双露西法酶测定以确认基因相互作用和促进剂活性.
主要成果:
- 在甜桃基因组中发现了54个bZIP编码基因.
- 甜桃bZIP6 (PavbZIP6) 的表达与增加的安托素积累相关.
- 通过与PavBBX6促进体相互作用,PavbZIP6正调节了氨酸生物合成基因 (PavDFR,PavANS,PavUFGT) 和ABA合成基因 (PavNCED1).
结论:
- PavbZIP6在甜桃果中调解ABA诱导的安托素生物合成中发挥着至关重要的作用.
- 这项研究揭示了一种新的调节途径,涉及PavbZIP6,ABA和酸氨酸的产生.
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