Progress Toward Rice Seed OMICS in Low-Level Gamma Radiation Environment in Iitate Village, Fukushima
2018
Rakwal, Randeep | Hayashi, Gohei | Shibato, Junko | Deepak, Saligrama A | Gundimeda, Seetaramanjaneyulu | Simha, Upendra | Padmanaban, Arunkumar | Gupta, Ravi | Han, Sang-Ik | Kim, Sun Tae | Kubo, Akihiro | Imanaka, Tetsuji | Fukumoto, Manabu | Agrawal, Ganesh Kumar | Shioda, S. (Seiji)
Here, we present an update on the next level of experiments studying the impact of the gamma radiation environment, created post-March, 2011 nuclear accident at Fukushima Daiichi nuclear power plant, on rice plant and its next generation—the seed. Japonica-type rice (Oryza sativa L. cv. Koshihikari) plant was exposed to low-level gamma radiation (~4 μSv/h) in the contaminated Iitate Farm field in Iitate village (Fukushima). Seeds were harvested from these plants at maturity, and serve as the treated group. For control group, seeds (cv. Koshihikari) were harvested from rice grown in clean soil in Soma city, adjacent to Iitate village, in Fukushima. Focusing on the multi-omics approach, we have investigated the dry mature rice seed transcriptome, proteome, and metabolome following cultivation of rice in the radionuclide contaminated soil and compared it with the control group seed (non-radioactive field-soil environment). This update article presents an overview of both the multi-omics approach/technologies and the first findings on how rice seed has changed or adapted its biology to the low-level radioactive environment.
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