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Light as an elicitor for enhanced production of secondary metabolites in plant cell, tissue, and organ cultures

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Abstract

Currently, in vitro cell, tissue, and organ cultures are used to produce plant secondary metabolites that are used as natural coloring agents, nutraceuticals, and medications. Various strategies have been applied for the hyperaccumulation of biomass and bioactive secondary compounds in vitro. The elicitation of cultured cells and organs with biotic and abiotic elicitors is an excellent strategy that has yielded promising results. Among various abiotic elicitors, light parameters such as light quality, intensity, and photoperiod have evolved as biotechnological tools to elicit cultures. Of the various light sources tested, ultraviolet (UV) lights, particularly UV-B, red, blue, and a mixture of light emitted by fluorescent light or light-emitting diodes, have yielded outstanding results and boosted the accumulation of bioactive compounds in cultured cells and organs. The objective of the current study was to evaluate light as an elicitor source and summarize the advantages and limitations of various light sources as elicitors for the bioaccumulation of secondary metabolites in vitro. The mechanism of the elicitation of secondary metabolism by UV and spectral light is discussed in this review.

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Acknowledgements

Hosakatte Niranjana Murthy is thankful for the “Brain Pool” (BP) program (Grant No. 2022H1D3A2A02056665). This work was supported by the National Research Foundation of Korea (NRF) Grant (MSIT) (No. NRF-2020R1A2C2102401), Korea, and the Technology Innovation Program (Grant Number P0018148) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).

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HNM: conceptualization; HNM, KSJ, KYP: investigation, data curation, formalization; SYP: resources, validation; HNM, KSJ, KYP, SYP: writing, review, and editing. All the authors have read and agreed to the published version of this manuscript.

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Correspondence to Hosakatte Niranjana Murthy or So Young Park.

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Murthy, H.N., Joseph, K.S., Paek, K.Y. et al. Light as an elicitor for enhanced production of secondary metabolites in plant cell, tissue, and organ cultures. Plant Growth Regul (2024). https://doi.org/10.1007/s10725-024-01139-9

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