现存中的MADS盒基因的动态进化通过大规模的基因组学分析
Rui Zhang1, Jiao Zhang1, Yue-Xia Xu1,2
1Eastern China Conservation Centre for Wild Endangered Plant Resources, Shanghai Chenshan Botanical Garden, Shanghai, China.
Frontiers in plant science
|July 8, 2024
概括
这项研究揭示了中的MADS盒基因的演变,发现了类中的MIKC型基因的保存功能和显著扩展,这有助于植物的复杂性.
科学领域:
- 植物进化生物学 植物进化生物学
- 分子遗传学 分子遗传学
- 文字转录学 (Transcriptomics) 是一个学科.
背景情况:
- MADS盒子转录因子调节了开花植物的花发育.
- 虽然已知MIKC类型的MADS盒基因在中扩展,但对非种子植物的系统研究是有限的.
- 和种子植物,虽然是姐妹群体,但表现出显著的形态差异.
研究的目的:
- 为了澄清现存种中MADS盒基因的进化和多样性.
- 为了研究与种子植物相比,中的MADS盒基因类型的保留和分离作用.
主要方法:
- 分析71种类的转录,基因和基因表达数据的MADS盒子基因序列.
- 对基因结构,蛋白质域,动机和表达模式进行比较分析.
主要成果:
- 总共有2512个MADS盒子序列被确定,的祖先大约有三种I型和5-6种II型基因.
- I型和II型MADS盒子基因在陆地植物中显示保存的域,图案和结构.
- MIKC*类型的蛋白质参与类植物体的发育,而MIKC类型的蛋白质在中表现出更广泛的表达,这表明它们在类植物体的发育中发挥着保留的作用.
- MIKC类型的基因,特别是CRM1和CRM6类型的基因,在类中经历了显著的扩张,这与功能多样化和植物体规划复杂性有关.
结论:
- 这项研究为的MADS盒基因的进化轨迹和功能多样化提供了新的见解.
- 中MIKC型基因的扩展凸显了它们在植物复杂性进化中的作用.
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