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首页> 外文期刊>Journal of Experimental Botany >Phylogeny, gene structures, and expression patterns of the ERF gene family in soybean (Glycine max L.)
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Phylogeny, gene structures, and expression patterns of the ERF gene family in soybean (Glycine max L.)

机译：大豆ERF基因家族的系统发育，基因结构和表达模式

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摘要

Members of the ERF transcription factor family play important roles in regulating gene expression in response to biotic and abiotic stresses. In soybean (Glycine max L.), however, only a few ERF genes have been studied so far. In this study, 98 unigenes that contained a complete AP2/ERF domain were identified from 63 676 unique sequences in the DFCI Soybean Gene Index database. The phylogeny, gene structures, and putative conserved motifs in soybean ERF proteins were analysed, and compared with those of Arabidopsis and rice. The members of the soybean ERF family were divided into 12 subgroups, similar to the case for Arabidopsis. AP2/ERF domains were conserved among soybean, Arabidopsis, and rice. Outside the AP2/ERF domain, many soybean-specific conserved motifs were detected. Expression analysis showed that nine unigenes belonging to six ERF family subgroups were induced by both biotic/abiotic stresses and hormone treatment, suggesting that they were involved in cross-talk between biotic and abiotic stress-responsive signalling pathways. Overexpression of two full-length genes from two different subgroups enhanced the tolerances to drought, salt stresses, and/or pathogen infection of the tobacco plants. These results will be useful for elucidating ERF gene-associated stress response signalling pathways in soybean.
机译：ERF转录因子家族的成员在调节基因表达以应对生物和非生物胁迫方面起着重要作用。然而，到目前为止，在大豆（Glycine max L.）中，仅研究了少数几个ERF基因。在这项研究中，从DFCI大豆基因索引数据库的63 676个独特序列中鉴定了98个包含完整AP2 / ERF域的单基因。分析了大豆ERF蛋白的系统发育，基因结构和推定的保守基序，并与拟南芥和水稻进行了比较。大豆ERF家族的成员被分为12个亚组，与拟南芥相似。 AP2 / ERF结构域在大豆，拟南芥和水稻之间是保守的。在AP2 / ERF域之外，检测到许多大豆特有的保守基序。表达分析表明，生物/非生物胁迫和激素处理均诱导了属于六个ERF家族亚组的9个单基因，表明它们参与了生物和非生物胁迫响应信号通路之间的串扰。来自两个不同亚组的两个全长基因的过表达增强了烟草植物对干旱，盐胁迫和/或病原体感染的耐受性。这些结果对于阐明大豆中与ERF基因相关的应激反应信号通路将是有用的。

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