RNA-Seq analysis reveals the growth of Populus in different light qualities

Light plays a key role in plant growth, development and response to adversity. Plants perceive different wavelengths of light in the environment through various photoreceptors and regulate plant growth and development through light signaling. However, there are fewer studies on the effects of different light qualities on the growth and development of tree species at high altitude. In the study, the effects of blue and green light treatments on the growth and development of Populus cuttings were investigated. Blue light treatment significantly increased the high growth of Populus, while green light treatment showed the opposite trend. Consequently, blue light treatment demonstrated growth promotion by increasing the growth hormone content of Populus. This implies that Populus may benefit from blue light therapy in terms of growth and development, which may be helpful for further research into the introduction and cultivation of poplar species in high altitude regions. Overall design: To investigate the response mechanism of plants to different light bands at high altitude, we evaluated the effects of blue, green and white light on plant growth and physiological traits by treating the cuttings of Populus with white, blue and green light films. We further used RNA-seq technology to investigate the molecular basis of plant responses to different wavelengths of light at the transcriptional level.