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首页> 美国卫生研究院文献>DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes >Phylogeny and evolution of plant cyclic nucleotide-gated ion channel (CNGC) gene family and functional analyses of tomato CNGCs
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Phylogeny and evolution of plant cyclic nucleotide-gated ion channel (CNGC) gene family and functional analyses of tomato CNGCs

机译：植物环状核苷酸门控离子通道（CNGC）基因家族的系统发生进化及番茄CNGC的功能分析

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Cyclic nucleotide-gated ion channels (CNGCs) are calcium-permeable channels that are involved in various biological functions. Nevertheless, phylogeny and function of plant CNGCs are not well understood. In this study, 333 CNGC genes from 15 plant species were identified using comprehensive bioinformatics approaches. Extensive bioinformatics analyses demonstrated that CNGCs of Group IVa were distinct to those of other groups in gene structure and amino acid sequence of cyclic nucleotide-binding domain. A CNGC-specific motif that recognizes all identified plant CNGCs was generated. Phylogenetic analysis indicated that CNGC proteins of flowering plant species formed five groups. However, CNGCs of the non-vascular plant Physcomitrella patens clustered only in two groups (IVa and IVb), while those of the vascular non-flowering plant Selaginella moellendorffii gathered in four (IVa, IVb, I and II). These data suggest that Group IV CNGCs are most ancient and Group III CNGCs are most recently evolved in flowering plants. Furthermore, silencing analyses revealed that a set of CNGC genes might be involved in disease resistance and abiotic stress responses in tomato and function of SlCNGCs does not correlate with the group that they are belonging to. Our results indicate that Group IVa CNGCs are structurally but not functionally unique among plant CNGCs.
机译：环状核苷酸门控离子通道（CNGC）是钙渗透通道，参与多种生物学功能。然而，人们对植物CNGC的系统发育和功能了解甚少。在这项研究中，使用全面的生物信息学方法鉴定了来自15种植物的333种CNGC基因。广泛的生物信息学分析表明，IVa组的CNGC在环状核苷酸结合域的基因结构和氨基酸序列方面与其他组的CNGC不同。产生了识别所有已鉴定植物CNGC的CNGC特异性基序。系统发育分析表明，开花植物种的CNGC蛋白形成了五类。但是，非维管植物Physcomitrella patens的CNGC仅聚集在两个组（IVa和IVb）中，而维管无花植物卷柏（Selaginella moellendorffii）的CNGC聚集在四个组中（IVa，IVb，I和II）。这些数据表明，IV族CNGC是最古老的，III族CNGC是最近在开花植物中进化的。此外，沉默分析表明，一组CNGC基因可能与番茄的抗病性和非生物胁迫反应有关，而SlCNGC的功能与其所属的基因组无关。我们的结果表明，IVa组CNGC在植物CNGC之间在结构上但在功能上并非唯一。

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