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This research explores how methyl jasmonate treatment influences gene expression and gamma-ray sensitivity in different tobacco cultivars.

March 13, 2026

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Gamma-ray sensitivity and gene expression responses to methyl jasmonate treatment for the radiation breeding of the Hyangcho and KB113LC tobacco cultivars ( Nicotiana tabacum L.) at different stages

JKJuyoung KimKorea Atomic Energy Research Institute HCHojoong ChoiKorea Atomic Energy Research Institute THTae Hyun HaKorea Atomic Energy Research Institute

Key Points

This research explores how methyl jasmonate treatment influences gene expression and gamma-ray sensitivity in different tobacco cultivars.
Examined the response of tobacco cultivars to gamma-ray mutagenesis.
Evaluated gene expression changes after methyl jasmonate treatment.
Identified optimal conditions for mutagenesis efficiency.
Methyl jasmonate treatment enhanced gene activation related to mutagenesis.
Identified specific stages and genotypes that show varied responses.
Developed low-nicotine tobacco lines aligned with health guidelines.

Abstract

The study findings support the introduction of a practical framework for stage- and genotype-specific γ-ray mutagenesis in tobacco, guided by the timing of MeJA-responsive gene activations. Based on the literature, MeJA pretreatment is assumed to potentially increase mutagenesis efficiency; our data define optimal conditions for testing this hypothesis, supporting the development of tobacco mutant populations, including low-nicotine tobacco lines aligned with evolving public health guidelines.

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Gamma-ray sensitivity and gene expression responses to methyl jasmonate treatment for the radiation breeding of the Hyangcho and KB113LC tobacco cultivars ( Nicotiana tabacum L.) at different stages

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