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首页> 外文期刊>Botany >Multiple lineages of FRUITFULL exhibit dynamic patterns of gene evolution after genome triplication in the Brassiceae tribe (Brassicaceae)
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Multiple lineages of FRUITFULL exhibit dynamic patterns of gene evolution after genome triplication in the Brassiceae tribe (Brassicaceae)

机译：Fruitfull的多个谱系表现出胸罩部落基因组（Brassicaceae）基因组三份术后基因演进的动态模式

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摘要

Phylogenetic analyses of important development genes are necessary to identify trends in sequence divergence and gene retention/loss that underlie diversification after polyploidization. We investigated the evolution of FRUITFULL (FUL) in the tribe Brassiceae (Brassicaceae), where a recent genome triplication allows investigation into the fate of paralogs. Many Brassiceae members possess a unique fruit type exhibiting segmentation and variable dehiscence called heteroarthrocarpy, providing a case study to compare with FUL's evolution, as a single copy is known to control fruit dehiscence in Arabidopsis. We constructed a phylogeny containing all major species lineages to investigate the number of retained FUL paralogs, trends in selective pressure and intron evolution, and their relationship to heteroarthrocarpy. We recovered four well-supported lineages that likely correspond to three FUL copies from hexaploidization. Rates of selection varied across lineages and comparatively relaxed selection was associated with fruit indehiscence. However, stabilizing selection predominated all lineages, indicating that paralogs retain functionality. Longer introns were correlated with relaxed selection on exons and, on average, heteroarthrocarpic taxa had longer introns and retained different FUL paralogs than nonheteroar-throcarpic taxa. although correlations were complex. The dynamic pattern of FUL evolution invites investigation into the role of upstream regulators in the dehiscence of heteroarthrocarpic fruits.
机译：重要的发展基因的系统发育分析是必要的，以确定多倍化后序列分歧和基因保留/损失的趋势。我们调查了Tribe Brassiceae（Brassicaceae）中的Fruitfull（Ful）的演变，其中最近的基因组三份允许调查患有Paralogs的命运。许多Brassiceae成员具有独特的水果型，其表现出分割和可变裂缝，称为杂种露出，提供案例研究，以便与Ful的演变进行比较，因为众所周知，以拟南芥控制水果裂缝。我们构建了一种含有所有主要物种谱系的系统发育，以研究保留的足总瘫痪的数量，选择性压力和内含子进化的趋势，以及它们与杂核的关系。我们恢复了四个受支持的血统，这可能对应于来自HexaPloidization的三份拷贝。选择的选择率在血统上变化，并且相对放松的选择与果实盲目相关。然而，稳定选择优势所有谱系，表明ParaLogs保留功能。随着外显子的放松选择，较长的内含子和平均而言，杂露酸的分类差异较长，内含物越长，并且保留了不同于无壬糖螺旋状蛋白的副蛋白。虽然相关性是复杂的。 Ful Evolution的动态模式邀请调查上游调节剂在杂氮瘤果实裂开中的作用。

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