Possible roles for polycomb repressive complex 2 in cereal endosperm.

Possible roles for polycomb repressive complex 2 in cereal endosperm.
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DOI:
10.3389/fpls.2015.00144
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发表时间:
2015
影响因子:
5.6
通讯作者:
Kinoshita T
Kinoshita T
中科院分区:
生物学2区
文献类型:
--
作者:
Tonosaki K;Kinoshita T

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多梳阻遏复合物2(PRC2)是植物和动物中进化上保守的多聚体蛋白复合物。与动物相比,植物已经进化出一系列不同的PRC2组分,并形成不同的复合物,在生命周期的许多发育阶段控制关键调控基因。许多研究,特别是在模式物种拟南芥中的研究,已经强调了PRC2和通过亲本来源特异性基因表达对胚乳发育的表观遗传控制的作用。然而,最近在谷类植物中的研究表明,虽然PRC2的某些组分相对于亲本的起源特异性基因表达模式表现出进化保守性,但编码PRC2组分的印记基因的身份并不保守。这种差异可能反映了谷类植物基因组在进化过程中经历了与A.在单子叶植物和真双子叶植物中胚乳发育程序并不相同。在这种情况下,我们集中在这方面的审查印记PRC2基因的表达和其在谷物胚乳发育中的作用。
The polycomb repressive complex 2 (PRC2) is an evolutionarily conserved multimeric protein complex in both plants and animals. In contrast to animals, plants have evolved a range of different components of PRC2 and form diverse complexes that act in the control of key regulatory genes at many stages of development during the life cycle. A number of studies, particularly in the model species Arabidopsis thaliana, have highlighted the role of PRC2 and of epigenetic controls via parent-of-origin specific gene expression for endosperm development. However, recent research in cereal plants has revealed that although some components of PRC2 show evolutionary conservation with respect to parent-of-origin specific gene expression patterns, the identity of the imprinted genes encoding PRC2 components is not conserved. This disparity may reflect the facts that cereal plant genomes have undergone different patterns of duplication during evolution compared to A. thaliana and that the endosperm development program is not identical in monocots and eudicots. In this context, we focus this review on the expression of imprinted PRC2 genes and their roles in endosperm development in cereals.
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发表时间: 2014
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