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在大麦中指定花器官的LOFSEPs的功能逆行

Chaoqun Shen¹, Xiujuan Yang¹, Duoxiang Wang¹

¹School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, Urrbrae, SA 5064 Australia.

|March 10, 2025

概括

大麦E类LOFSEP基因主要影响的发育,而不是内部的花器官. HvMADS6部分补偿了LOFSEP的损失,这表明它在花身份确定中起到了回归的作用.

科学领域:

植物生物学植物生物学
发育遗传学的发展遗传学.
分子进化的分子进化.

背景情况:

该ABCDE模型解释了花种子中的花器官身份.
E 类 MADS 盒基因对于花的发育至关重要.
麦子E类LOFSEP亚家族 (MADS1,MADS5,MADS34) 在尖形成中的作用尚不清楚.

研究的目的:

研究大麦E类LOFSEP基因在花发育中的功能作用.
在大麦中特征单,双和三重的lofsep突变.
了解大麦的遗传相互作用和补偿机制.

主要方法:

对大麦lofsep单,双和三重突变的生成和分析.
植物器官在突变系中的表型特征.
在突变的花器官中对ABCDE类基因的表达分析.

主要成果:

所有LOFSEP成员的功能丧失特别影响了的发育,导致类似叶子的结构或尺寸缩小.
内部的花器官 (花,花,花) 在洛夫塞普突变体中保持不变.
A和E类基因的调节上升,而B和C类基因的调节下降,在lofsep突变的lemma和palea中.

结论:

麦子LOFSEPs似乎在的发展中发挥着特殊的作用,与其他物种E类基因的保存功能不同.
丧失HvMADS6 (一种AGL6同类物) 会导致类似lemma的器官转变和新的尖端细胞形成.
这些发现表明,大麦LOFSEPs可能在花器官认同中演变为回归作用,可能由HVMADS6.6补偿.

关键词:

大麦大麦,大麦大麦,大麦大麦,大麦大麦.花的器官花的器官洛夫塞普 (LOFSEP) 公司在MADS6中,我们可以看到MADS6.

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