Trends in Plant Science ( IF 17.3 ) Pub Date : 2017-06-13 , DOI: 10.1016/j.tplants.2017.05.007 Valentino Giarola , Quancan Hou , Dorothea Bartels
Desiccation tolerance (DT) in angiosperms is present in the small group of resurrection plants and in seeds. DT requires the presence of protective proteins, specific carbohydrates, restructuring of membrane lipids, and regulatory mechanisms directing a dedicated gene expression program. Many components are common to resurrection plants and seeds; however, some are specific for resurrection plants. Understanding how each component contributes to DT is challenging. Recent transcriptome analyses and genome sequencing indicate that increased expression is essential of genes encoding protective components, recently evolved, species-specific genes and non-protein-coding RNAs. Modification and reshuffling of existing cis-regulatory promoter elements seems to play a role in the rewiring of regulatory networks required for increased expression of DT-related genes in resurrection species.
中文翻译:
被子植物的脱水耐性:转录组学和基因组测序的提示
在少数复活植物和种子中存在被子植物的耐干燥性(DT)。DT需要保护性蛋白质,特定碳水化合物,膜脂质的重组以及指导专用基因表达程序的调节机制的存在。复活植物和种子有许多共同的成分。但是,有些是专门用于复活植物的。了解每个组件如何对DT构成挑战是具有挑战性的。最近的转录组分析和基因组测序表明,增加表达对于编码保护性成分的基因,最近进化的物种特异性基因和非蛋白质编码的RNA至关重要。修改和改组现有的顺式-调节性启动子元件似乎在重新构建DT相关基因在复活物种中表达所需的调节网络的重新布线中起作用。