Seed Gamma Irradiation of Arabidopsis Thaliana ABA-Mutant Lines Alters Germination and Does Not Inhibit the Photosynthetic Efficiency of Juvenile Plants

Overview

Journal Dose Response

Publisher Sage Publications

Date 2021 Jan 18

PMID 33456412

Citations 3

Authors

Darya Babina

Marina Podobed

Ekaterina Bondarenko

Elizaveta Kazakova

Sofia Bitarishvili

Mikhail Podlutskii

Anastasia Mitsenyk

Alexander Prazyan

Irina Gorbatova

Ekaterina Shesterikova

Polina Volkova

Affiliations

Soon will be listed here.

Abstract

Plant growth response to γ-irradiation includes stimulating or inhibitory effects depending on plant species, dose applied, stage of ontogeny and other factors. Previous studies showed that responses to irradiation could depend on ABA accumulation and signaling. To elucidate the role of ABA in growth and photosynthetic responses to irradiation, lines Col-8, and of were used. Seeds were γ-irradiated using Co in the dose range 50-150 Gy. It was revealed that the dose of 150 Gy affected germination parameters of and Col-8 lines, while line was the most resistant to the studied doses and even showed faster germination at early hours after γ-irradiation at 50 Gy. These results suggest that susceptibility to ABA is probably more important for growth response to γ-irradiation than ABA synthesis. The photosynthetic functioning of 16-day-old plants mainly was not disturbed by γ-irradiation of seeds, and no indication of photosystem II photoinhibition was noticed, revealing the robustness of the photosynthetic system of . Glutathione peroxidase activity and ABA concentrations in plant tissues were not affected in the studied dose range. These results contribute to the understanding of germination and photosynthesis fine-tuning and of mechanisms of plant tolerance to ionizing radiation.

Citing Articles

Chronic Ionizing Radiation of Plants: An Evolutionary Factor from Direct Damage to Non-Target Effects.

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Ionizing Radiation: Effective Physical Agents for Economic Crop Seed Priming and the Underlying Physiological Mechanisms.

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Accessions from the Chernobyl Exclusion Zone Show Decreased Sensitivity to Additional Acute Irradiation.

Podlutskii M, Babina D, Podobed M, Bondarenko E, Bitarishvili S, Blinova Y Plants (Basel). 2022; 11(22).

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