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CYCLOIDEA对应物部分冗余地运行,以指定Mimulus lewisii的背花的发展

Taryn S Dunivant¹, Vibhuti Singh¹, Kaylee E Livingston¹

¹Department of Ecology and Evolutionary Biology, University of Kansas, 1200 Sunnyside Avenue, Lawrence, KS, 66045, USA.

American journal of botany

|January 24, 2024

概括

高核心Lamiiales (HCL) CYC2基因中的基因重复有助于双边花的对称性. 这些对应基因因因它们在花发育中的联合作用而保留,类似于龙的CYC基因.

科学领域:

植物进化遗传学植物进化遗传学
发育生物学是发展生物学.
花的演化是花的演化.

背景情况:

基因重复在植物中很常见,影响了遗传程序和进化新性.
基因复制进化研究的关键模型是依赖于CYC的花对称路径.
一个特定的CYC基因谱系重复事件在更高核心Lamiiales (HCL) 仍未得到充分研究.

研究的目的:

研究重复的HCL CYC2基因的进化命运.
确定这些重复对花的对称性的功能影响.
探索HCL中CYC类型的调节相互作用和保留力.

主要方法:

利用RNA干扰 (RNAi) 抑制HCL物种中的MlCYC2A和MlCYC2B表达.
评估了单基因和双基因沉默植物对花对称性的表型影响.
进行了MlCYC2A,MlCYC2B和下游RADIALIS (MlRAD5) 的表达调查.

主要成果:

MlCYC2A和MlCYC2B共同调节双边花的对称性.
MlCYC2B具有明显的背花识别功能,可能会影响骨发育.
MlCYC2A对于背花形状至关重要,并且建议MlCYC2A和MlCYC2B之间的调节相互作用.

结论:

特定于HCL的CYC类似物很可能被保留,因为它们在建立双边花的对称性方面发挥了合作作用.
这种保留机制反映了Antirrhinum majus (快龙) 独立进化的CYC类似物.
这项研究提供了关于在花发育过程中基因重复的功能意义和进化保留的见解.

关键词:

在CYC中,CYC是CYC.环流体 (CYCLOIDEA) 是一个环流体.仿真虫 (Mimulus lewisii) 是一个有色的植物.弗里马属植物 (Phrymaceae) 是一种植物.这是一种RNA干扰.它们是RNAiRNAi.进化演化演化演化演化演化演化演化花的对称性是花的对称性.基因复制是基因的复制.

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