Journal
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
Volume 192, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.envexpbot.2021.104655
Keywords
UV-B signaling; UVR8 photoreceptors; Transcription factors; Plant morphogenesis; Secondary metabolite production; Regulatory network
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UV-B radiations were once considered harmful to plant cells, but recent research has shown its multifaceted impacts. UVR8 photoreceptors play a significant role in regulating plant morphogenesis, growth, and secondary metabolite production. Transcription factors have been found to be key regulators in UV-B signaling, affecting plant morphology and secondary metabolite biosynthesis.
Earlier, Ultraviolet-B (UV-B) radiations were considered to be detrimental to plant cells and their components. But recent researches have shown that it has multifaceted impacts on plants. The discovery of UV-B RESISTANCE 8 (UVR8) photoreceptors has changed the perceptions of its biological impact. They are significant regulators of plant morphogenesis, growth, and secondary metabolite production. UV-B radiations when provided in low intensity can be used to generate improved biotic and abiotic stress-tolerant plants with secondary metabolite enriched plant products. Deciphering the extensive role of plant transcription factors for the enzyme that encodes genes for the construction of the plant secondary metabolite network in response to UV-B has appeared to be useful in the plant signaling cascades and in understanding its regulatory role towards secondary metabolite biosynthesis. This review highlights the role UV-B regulated transcriptional factors involved in plant morphogenesis, signaling, and plant secondary metabolite production.
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