Regulation of Gene Expression by LED Lighting



As an alternative artificial light source, light-emitting diodes (LEDs) possess unique properties that have potential to regulate plant growth and development and hold great promise in the future of controlled environment agriculture. This narrow-bandwidth lighting platform provides a unique opportunity to test different hypotheses on plant growth, cellular processes, metabolism, flowering, fruit ripening, etc., at molecular level with a great precision. Different wavebands of LEDs alone or in combination can regulate a variety of gene expression involving various aspects of plant growth and developmental. In this chapter, the regulatory role of different LED radiations on the modulation of plant photomorphogenesis through differential gene expression of various photoreceptors along with auxin responsive factors has been discussed. The expression of photomorphogenic signaling elements was found to be significantly affected either positively or negatively by changes in the LED quality and duration of night interruption. Further, the present review describes the salient feature of LED-induced plant gene expression related to the biosynthetic pathway of carotenoids, and flavonoids, ascorbate metabolism and plant defense. The LED-induced gene expression results in higher accumulation of carotenoids, phenolics, and ascorbates, which significantly enhances the commercial and nutritional value of crop species. LED lighting also plays a crucial role in plant defense and disease resistance by accelerating the cascade of gene expression related to the plant immunity, such as elevated expression of pathogenesis-related genes and higher accumulation of reactive oxygen species. The findings presented, thus, open up a new avenue of crop improvement through LED lighting.


LED light Gene expression Plant photoreceptors Metabolic pathways Disease resistant 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  1. 1.Agricultural and Food Engineering DepartmentIndian Institute of Technology KharagpurKharagpurIndia
  2. 2.Advanced Laboratory for Plant Genetic EngineeringIndian Institute of Technology KharagpurKharagpurIndia

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