鉴定长腺三体特异性基因表达的cis元素,该基因表达是由HD-ZIP IV蛋白准的
Hongying Zhang1, Yalin Sui1, Wei Liu1
1Key Laboratory for Cultivation of Tobacco Industry, College of Tobacco Science, Henan Agricultural University, Zhengzhou 450002, China.
International journal of biological macromolecules
|March 3, 2024
概括
研究人员将NtHD13确定为尼古提亚烟草中长腺状三胞体 (LGT) 发育的关键调节者. 这种家庭主体-氨酸拉链蛋白与NtCycB2促进体结合,积极控制LGT的形成,并提供有关植物发育和代谢物生产的见解.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物开发 植物开发
- 二次新陈代谢二次新陈代谢
背景情况:
- 腺体三合体对于植物适应至关重要,并具有商业价值.
- 在Nicotiana tabacum中,B型循环素 (CycB2) 负面调节长腺状三体 (LGT) 的形成.
- 了解LGT形成的上游监管机构对于利用其潜力至关重要.
研究的目的:
- 为了确定上游调节元素和控制尼古提亚烟草LGT形成的蛋白质.
- 阐明这些调节器与NtCycB2促进体相互作用的机制.
主要方法:
- 在NtCycB2促进体内选LGT特异性cis元素.
- GUS 记者基因测试以确定组织特异性促进体活性.
- 5'截断和促进者的合成细分分析.
- 酵母单杂交 (Y1H) 和LUC测定用于蛋白质-DNA相互作用研究.
- 基因功能分析通过候选基因的过度表达和淘汰.
主要成果:
- 该NtCycB2促进器特别驱动GUS在LGT中的表达.
- 含有L1元素 (5'-AAAATTAATAAGAG-3') 的87-bp区域对LGT基因表达至关重要.
- 家庭主体-氨酸拉链IV蛋白,NtHD13,特别与L1元素结合.
- NtHD13积极调节LGT的形成;过度表达增加LGT,而淘汰会减少它们.
结论:
- NtHD13作为尼古提亚烟草LGT形成的积极调节剂.
- NtHD13与NtCycB2促进体中的L1元素结合,调解LGT的发展.
- 这项研究揭示了三组形成的新型调节途径,对二次代谢物产生有影响.
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