Radiation Hormesis in Barley Manifests as Changes in Growth Dynamics Coordinated with the Expression of IPM19L-like/I, ICML31-like/I, and IAOS2-like/I

The stimulation of growth and development of crops using ionising radiation (radiation hormesis) has been reported by many research groups. However, specific genes contributing to the radiation stimulation of plant growth are largely unknown. In this work, we studied the impact of the low-dose γ-irr...

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Published in:International journal of molecular sciences 2024-01, Vol.25 (2)
Main Authors: Kazakova, Elizaveta, Gorbatova, Irina, Khanova, Anastasia, Shesterikova, Ekaterina, Pishenin, Ivan, Prazyan, Alexandr, Podlutskii, Mikhail, Blinova, Yana, Bitarishvili, Sofia, Bondarenko, Ekaterina, Smirnova, Alena, Lychenkova, Maria, Bondarenko, Vladimir, Korol, Marina, Babina, Daria, Makarenko, Ekaterina, Volkova, Polina
Format: Article
Language:English
Subjects:
Barley
Gene expression
Genes
Genetic research
Growth
Radiation
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Summary:The stimulation of growth and development of crops using ionising radiation (radiation hormesis) has been reported by many research groups. However, specific genes contributing to the radiation stimulation of plant growth are largely unknown. In this work, we studied the impact of the low-dose γ-irradiation of barley seeds on the growth dynamics and gene expression of eight barley cultivars in a greenhouse experiment. Our findings confirmed that candidate genes of the radiation growth stimulation, previously established in barley seedlings (PM19L-like, CML31-like, and AOS2-like), are significant in radiation hormesis throughout ontogeny. In γ-stimulated cultivars, the expression of these genes was aligned with the growth dynamics, yield parameters, and physiological conditions of plants. We identified contrasting cultivars for future gene editing and found that the γ-stimulated cultivar possessed some specific abiotic stress-responsive elements in the promotors of candidate genes, possibly revealing a new level of radiation hormesis effect execution. These results can be used in creating new productive barley cultivars, ecological toxicology of radionuclides, and eustress biology studies.
ISSN:1422-0067
1422-0067
DOI:10.3390/ijms25020974