The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.
Grain Unloading of Arsenic Species in Rice
Open accessAbstract
Rice (Oryza sativa) is the staple food for over half the world's population yet may represent a significant dietary source of inorganic arsenic (As), a nonthreshold, class 1 human carcinogen. Rice grain As is dominated by the inorganic species, and the organic species dimethylarsinic acid (DMA). To investigate how As species are unloaded into grain rice, panicles were excised during grain filling and hydroponically pulsed with arsenite, arsenate, glutathione-complexed As, or DMA. Total As concentrations in flag leaf, grain, and husk, were quantified by inductively coupled plasma mass spectroscopy and As speciation in the fresh grain was determined by x-ray absorption near-edge spectroscopy. The roles of phloem and xylem transport were investigated by applying a ± stem-girdling treatment to a second set of panicles, limiting phloem transport to the grain in panicles pulsed with arsenite or DMA. The results demonstrate that DMA is translocated to the rice grain with over an order magnitude greater efficiency than inorganic species and is more mobile than arsenite in both the phloem and the xylem. Phloem transport accounted for 90% of arsenite, and 55% of DMA, transport to the grain. Synchrotron x-ray fluorescence mapping and fluorescence microtomography revealed marked differences in the pattern of As unloading into the grain between DMA and arsenite-challenged grain. Arsenite was retained in the ovular vascular trace and DMA dispersed throughout the external grain parts and into the endosperm. This study also demonstrates that DMA speciation is altered in planta, potentially through complexation with thiols.
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Cites
Transporters of arsenite in rice and their role in arsenic accumulation in rice grain
Ma, J. F., Yamaji, N., Mitani, N., Xu, X.-Y., Su, Y.-H., McGrath, S. P., & Zhao, F.-J. (2008) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0802361105 · Cited by 1,411
Arsenic uptake and metabolism in plants
Zhao, F. J., Ma, J. F., Meharg, A. A., & McGrath, S. P. (2009) · New Phytologist · doi:10.1111/j.1469-8137.2008.02716.x · Cited by 1,185
Self-citationMeharg, A. A., & Rahman, M. M. (2003) · Environmental Science & Technology · doi:10.1021/es0259842 · Cited by 1,018
Self-citationVariation in Arsenic Speciation and Concentration in Paddy Rice Related to Dietary Exposure
Williams, P. N., Price, A. H., Raab, A., Hossain, S. A., Feldmann, J., & Meharg, A. A. (2005) · Environmental Science & Technology · doi:10.1021/es0502324 · Cited by 804
Self-citationWilliams, P. N., Villada, A., Deacon, C., Raab, A., Figuerola, J., Green, A. J., Feldmann, J., & Meharg, A. A. (2007) · Environmental Science & Technology · doi:10.1021/es070627i · Cited by 777
Self-citationGeographical Variation in Total and Inorganic Arsenic Content of Polished (White) Rice
Meharg, A. A., Williams, P. N., Adomako, E., Lawgali, Y. Y., Deacon, C., Villada, A., Cambell, R. C. J., Sun, G., Zhu, Y.-G., Feldmann, J., et al. (2009) · Environmental Science & Technology · doi:10.1021/es802612a · Cited by 772
Self-citationGrowing Rice Aerobically Markedly Decreases Arsenic Accumulation
Xu, X. Y., McGrath, S. P., Meharg, A. A., & Zhao, F. J. (2008) · Environmental Science & Technology · doi:10.1021/es800324u · Cited by 664
Self-citationUptake Kinetics of Arsenic Species in Rice Plants
Abedin, M. J., Feldmann, J., & Meharg, A. A. (2002) · Plant Physiology · doi:10.1104/pp.010733 · Cited by 644
Self-citationArsenic Accumulation and Metabolism in Rice (Oryza sativa L.)
Abedin, M. J., Cresser, M. S., Meharg, A. A., Feldmann, J., & Cotter-Howells, J. (2002) · Environmental Science & Technology · doi:10.1021/es0101678 · Cited by 617
Self-citationFageria, N. K. (2007) · Journal of Plant Nutrition · doi:10.1080/15226510701374831 · Cited by 591
Cited by
Zhao, F.-J., McGrath, S. P., & Meharg, A. A. (2010) · Annual Review of Plant Biology · doi:10.1146/annurev-arplant-042809-112152 · Cited by 1,246
Self-citationToxic Heavy Metal and Metalloid Accumulation in Crop Plants and Foods
Clemens, S., & Ma, J. F. (2016) · Annual Review of Plant Biology · doi:10.1146/annurev-arplant-043015-112301 · Cited by 1,155
Arsenic Toxicity: The Effects on Plant Metabolism
Finnegan, P. M., & Chen, W. (2012) · Frontiers in Physiology · doi:10.3389/fphys.2012.00182 · Cited by 849
Arsenic and cadmium accumulation in rice and mitigation strategies
Zhao, F.-J., & Wang, P. (2020) · Plant and Soil · doi:10.1007/s11104-019-04374-6 · Cited by 624
Methylated Arsenic Species in Rice: Geographical Variation, Origin, and Uptake Mechanisms
Zhao, F.-J., Zhu, Y.-G., & Meharg, A. A. (2013) · Environmental Science & Technology · doi:10.1021/es304295n · Cited by 353
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Metadata
- Authors
- Carey, A.-M., Scheckel, K. G., Lombi, E., Newville, M., Choi, Y., Norton, G. J., Charnock, J. M., Feldmann, J., Price, A. H., & Meharg, A. A.
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 2009-10-30
- Volume
- 152
- Issue
- 1
- Pages
- 309-319
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- OpenAlex
- W2145596608
- Cited by
- 313
- References
- 34
- FWCI
- 12.39
- Type
- journal article
- Language
- en
- Open access
- green
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- Carey, A.-M., Scheckel, K. G., Lombi, E., Newville, M., Choi, Y., Norton, G. J., Charnock, J. M., Feldmann, J., Price, A. H., & Meharg, A. A. (2009). Grain Unloading of Arsenic Species in Rice. Plant Physiology. https://doi.org/10.1104/pp.109.146126
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