《light signalling review Light-regulated transcriptional networks in higher plants》.pdf

R E V I E W S Light-regulated transcriptional networks in higher plants Yuling Jiao, On Sun Lau and Xing Wang Deng Abstract | Plants have evolved complex and sophisticated transcriptional networks that mediate developmental changes in response to light. These light-regulated processes include seedling photomorphogenesis, seed germination and the shade-avoidance and photoperiod responses. Understanding the components and hierarchical structure of the transcriptional networks that are activated during these processes has long been of great interest to plant scientists. Traditional genetic and molecular approaches have proved powerful in identifying key regulatory factors and their positions within these networks. Recent genomic studies have further revealed that light induces massive reprogramming of the plant transcriptome, and that the early light-responsive genes are enriched in transcription factors. These combined approaches provide new insights into light-regulated transcriptional networks. Phototropism Light is one of the most important environmental factors other environmental stimuli often work together to Directional plant growth that is for plants, as it provides the source of energy for plant trigger specific developmental responses, indicating the determined by the direction of life. It is therefore not surprising that plants have adopted existence of integration points between these different the light source. the ability to sense multiple parameters of ambi