Transcription Factors and Environmental Stresses in Plants

摘要: Plants are exposed to environmental changes, which perceived as stresses when they quick and extreme. Drought, salt, extreme temperatures, in particular, limit agricultural crop productivity, affecting all stages of plant growth reproduction, therefore strongly decreasing yield. Worldwide estimates show that most yield loss (70%) can be directly due abiotic stresses. Moreover, the increasing phenomenon enthronization incorrect use land have contributed degradation. A large number stress-responsive genes been reported a variety plants including Arabidopsis major crops such barley, maize, rice, wheat. Transcriptional control expression these is crucial part response Therefore, recently transcriptional mechanisms involved several subject intense research, productive identifying transcription factors (TFs) important “key or master regulators” gene under stress. An TFs described essential factor binding regions identified for many genes. In fact, systems regulation work, thanks specific cis-elements located promoter target genes, called regulons. The main regulons respond DREB1-CBF (dehydration-responsive element protein 1/C-repeat factor), cold stress response, DREB2, acts ABA-independent heat osmotic stress, whereas ABA-responsive (ABRE) (AREB)/ABRE (ABF) regulon operates depending on ABA Other regulons, MYB/MYC NAC, induce repress response. last few years, studies shown powerful tools engineer enhanced tolerance plants. this chapter, we will summarize plants’ signaling responses, relative adaptive at molecular level. finding occur conditions one-way pass improvement