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首页> 外文期刊>The New Phytologist >A class I KNOX gene from the palm species Elaeis guineensis (Arecaceae) is associated with meristem function and a distinct mode of leaf dissection.
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A class I KNOX gene from the palm species Elaeis guineensis (Arecaceae) is associated with meristem function and a distinct mode of leaf dissection.

机译：来自棕榈树种锦葵科（Arecaceae）的I类KNOX基因与分生组织功能和独特的叶片解剖模式有关。

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摘要

Class I Knotted-like homeobox (KNOX) transcription factors are important regulators of shoot apical meristem function and leaf morphology by their contribution to dissected leaf development. Palms are of particular interest as they produce dissected leaves generated by a distinct mechanism compared with eudicots. The question addressed here was whether class I KNOX genes might be involved in meristem function and leaf dissection in palms. Here, we characterized the EgKNOX1 gene from oil palm (Elaeis guineensis, Arecaceae) and compared it with available sequences from other plant species using phylogenetic analysis. Gene expression pattern was investigated using reverse transcription-polymerase chain reaction (RT-PCR) and in situ hybridization. Functional analysis was carried out by ectopic expression in Arabidopsis and rice. EgKNOX1 was orthologous to STM from Arabidopsis and to OSH1 from rice. It was expressed in the central zone of both vegetative and reproductive meristems. During leaf development, its expression was associated with plications from which the leaflets originate. Different modes of leaf dissection are seen to involve a similar class of genes to control meristematic activities, which govern the production of dissected morphologies..
机译：I类打结同源异型盒（KNOX）转录因子是茎尖分生组织功能和叶片形态的重要调节剂，因为它们对解剖的叶片发育有贡献。棕榈是特别令人感兴趣的，因为它们产生的叶子是通过与双子叶植物相比以不同的机理产生的。这里要解决的问题是，I类NOX基因是否可能参与分生组织功能和棕榈叶解剖。在这里，我们表征了油棕（Elaeis guineensis，槟榔科）的EgKNOX1基因，并将其与其他植物物种的可用序列进行了系统进化分析。使用逆转录-聚合酶链反应（RT-PCR）和原位杂交研究了基因表达模式。通过异位表达在拟南芥和水稻中进行功能分析。 EgKNOX1与拟南芥的STM同源，与水稻的OSH1同源。它在营养分生组织和生殖分生组织的中央区域表达。在叶片发育过程中，其表达与小叶起源的褶皱相关。观察到不同的叶解剖模式涉及相似的一类基因来控制分生组织的活动，这些活动控制着解剖形态的产生。

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