Gene expression responses to sequential nutrient deficiency stresses in soybean

Throughout a growing season, plants experience a multitude of short periods of various abiotic stresses. These stress events have long-term impacts on plant performance and yield. It is imperative to improve our understanding of the genes and networks underlying plant stress tolerance to mitigate end of season yield loss. The majority of studies examining transcriptional changes induced by stress focus on single stress events. Few studies have been performed to examine the transcriptional response of plants exposed to sequential stress exposure, which better reflects field conditions. In this study, we examine the transcriptional profile of soybean plants exposed to iron deficiency stress followed by phosphate deficiency stress (-Fe-Pi). Comparing this response to previous studies, we identified a suite of genes unique to the novel sequential stress exposure (-Fe-Pi)

在整个生长季节中，植物经历了多种多样的非生物胁迫的短暂时期。这些胁迫事件对植物的生长性能和产量产生长期影响。深入理解植物耐胁迫的基因和网络结构，以减轻生长季节末的产量损失，显得尤为迫切。目前，大多数研究集中于单一胁迫事件引发的转录变化。而针对植物在连续胁迫暴露下的转录反应研究寥寥无几，这并不符合田间实际条件。在本研究中，我们分析了大豆植物在经历铁缺乏胁迫（-Fe）后，紧接着磷酸缺乏胁迫（-Pi）的转录谱。通过与以往研究进行比较，我们识别出一系列在新型连续胁迫暴露（-Fe-Pi）下特有的基因。