PDF(Pubmed)
Abstract：
Alfin-like (AL) transcription factors are a family of plant-specific genes with a PHD-finger-like structural domain at the C-terminus and a DUF3594 structural domain at the N-terminus that play important roles in plant development and stress response. In the present study, genome-wide identification and analysis were performed of the AL protein family in cultivated tomato (Solanum lycopersicum) and three wild relatives (S. pennellii, S. pimpinellifolium, and S. lycopersicoides) to evaluate their response to different abiotic stresses. A total of 39 ALs were identified and classified into four groups and based on phylogenetic tree and evolutionary analysis were shown to have formed prior to the differentiation of monocotyledons and dicots. Moreover, cis-acting element analysis revealed that various phytohormone response and abiotic stress response elements were highly existed in tomato. In addition, further analysis of the SlAL3 gene revealed that its expression was induced by drought and salt stresses and localized to the nucleus. In conclusion, our findings concerning AL genes provide useful information for further studies on their functions and regulatory mechanisms and provide theoretical references for studying AL gene response to abiotic stresses in plants.
摘要：
Alfin-like（AL）转录因子是植物特异性基因家族，在C端具有PHD-finger-like结构域，在N端具有DUF3594结构域，在植物发育和胁迫中起重要作用响应。在本研究中,对栽培番茄（Solanumlycopersicum）和三个野生近缘种（S.pennellii,S、Pimpinellifolium，和S.lycopersicoides）来评估它们对不同非生物胁迫的反应。总共鉴定了39个AL，并将其分为四组，并根据系统发育树和进化分析表明，在单子叶和双子叶植物分化之前已经形成。此外，顺式作用元素分析表明，番茄中高度存在各种植物激素反应和非生物胁迫反应元素。此外,对SlAL3基因的进一步分析表明，其表达是由干旱和盐胁迫诱导的，并位于细胞核。总之,我们关于AL基因的发现为进一步研究其功能和调控机制提供了有用的信息，并为研究AL基因对植物非生物胁迫的反应提供了理论参考。
