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Iron deficiency enhances cadmium uptake and translocation mediated by the Fe2+transporters OsIRT1 and OsIRT2 in rice
Open accessAbstract
Cadmium (Cd) accumulation in rice grains is enhanced if ponded water is released from paddy fields during the reproductive stage (intermittent irrigation). The release of ponded water creates aerobic soil conditions under which Cd becomes soluble and iron (Fe) solubility decreases. We hypothesized that Fe shortage in rice induces Fe uptake and translocation and that Cd is also taken up and translocated throughout this process. Hydroponically cultured Fe-deficient rice absorbed more Cd than did Fe-sufficient rice, and the presence of Fe enhanced the translocation of Cd to the shoots. Yeast mutants expressing OsIRT1 and OsIRT2, which encode the rice Fe2+ transporter, became more sensitive to Cd, suggesting that Cd was absorbed by OsIRT1 and OsIRT2. We discuss the possibility that Cd accumulation in rice grains during the reproductive stage is mediated by the Fe transport system.
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Citations
Cited by
Nramp5 Is a Major Transporter Responsible for Manganese and Cadmium Uptake in Rice
Sasaki, A., Yamaji, N., Yokosho, K., & Ma, J. F. (2012) · The Plant Cell · doi:10.1105/tpc.112.096925 · Cited by 1,307
Uraguchi, S., Mori, S., Kuramata, M., Kawasaki, A., Arao, T., & Ishikawa, S. (2009) · Journal of Experimental Botany · doi:10.1093/jxb/erp119 · Cited by 666
Self-citationThe OsNRAMP1 iron transporter is involved in Cd accumulation in rice
Takahashi, R., Ishimaru, Y., Senoura, T., Shimo, H., Ishikawa, S., Arao, T., Nakanishi, H., & Nishizawa, N. K. (2011) · Journal of Experimental Botany · doi:10.1093/jxb/err136 · Cited by 591
Self-citationIshikawa, S., Ishimaru, Y., Igura, M., Kuramata, M., Abe, T., Senoura, T., Hase, Y., Arao, T., Nishizawa, N. K., & Nakanishi, H. (2012) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1211132109 · Cited by 512
Self-citationCadmium transport and tolerance in rice: perspectives for reducing grain cadmium accumulation
Uraguchi, S., & Fujiwara, T. (2012) · Rice · doi:10.1186/1939-8433-5-5 · Cited by 437
Metadata
- Authors
- Nakanishi, H., Ogawa, I., Ishimaru, Y., Mori, S., & Nishizawa, N. K.
- Venue
- Soil Science and Plant Nutrition
- Publisher
- Informa UK Limited
- Published
- 2006-08
- Volume
- 52
- Issue
- 4
- Pages
- 464-469
- ISSN
- 0038-0768 (ISSN-L)
- 1747-0765
- OpenAlex
- W1992264303
- Cited by
- 524
- References
- 0
- FWCI
- 7.36
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Nakanishi, H., Ogawa, I., Ishimaru, Y., Mori, S., & Nishizawa, N. K. (2006). Iron deficiency enhances cadmium uptake and translocation mediated by the Fe2+transporters OsIRT1 and OsIRT2 in rice. Soil Science and Plant Nutrition. https://doi.org/10.1111/j.1747-0765.2006.00055.x
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