Cited by 149Selenium in Biological SystemsPlant Micronutrient Interactions and EffectsOrganoselenium and organotellurium chemistry

Selenium Speciation in Soil and Rice: Influence of Water Management and Se Fertilization

Li, Hua-Fen, Lombi, Enzo, Stroud, Jacqueline L., McGrath, Steve P., Zhao, Fang-Jie·2010·Journal of Agricultural and Food Chemistry

Abstract

Rice (Oryza sativa) is the staple food for half of the world's population, but the selenium (Se) concentrations in rice grain are low in many rice-growing regions. This study investigated the effects of water management on the Se speciation dynamics in the soil solution and Se uptake and speciation in rice in a pot experiment. A control containing no Se or 0.5 mg kg(-1) of soil of selenite or selenate was added to the soil, and plants were grown under aerobic or flooded conditions. Flooding soil increased soluble Se concentration when no Se or selenite was added to the soil, but decreased it markedly when selenate was added. Selenate was the main species in the +selenate treatment, whereas selenite and selenomethionine selenium oxide were detected in the flooded soil solutions of the control and +selenite treatments. Grain Se concentration was 49% higher in the flooded than in the aerobic treatments without Se addition. In contrast, when selenate or selenite was added, the aerobically grown rice contained 25- and 2-fold, respectively, more Se in grain than the anaerobically grown rice. Analysis of Se in rice grain using enzymatic hydrolysis followed by HPLC-ICP-MS and in situ X-ray absorption near-edge structure (XANES) showed selenomethionine to be the predominant Se species. The study showed that selenate addition to aerobic soil was the most effective way to increase Se concentration in rice grain.

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Crossref · 10.1021/jf1026185

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  • Many studies have reported large amounts of unidentified selenium fractions in soil extracts, up to 100%.

    “Many studies have reported large amounts of unidentified Se fractions in soil extracts, up to 100% [150,151,152,153].”

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Authors
Li, H.-F., Lombi, E., Stroud, J. L., McGrath, S. P., & Zhao, F.-J.
Affiliations
  • Rothamsted Research (GB)
  • University of South Australia (AU)
  • Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, United Kingdom
Venue
Journal of Agricultural and Food Chemistry
Published
2010-10-21
Volume
58
Issue
22
Pages
11837-11843
ISSN
  • 0021-8561 (ISSN-L)
  • 1520-5118
OpenAlex
W2041347628
Cited by
149
References
41
Citations by year
2026: 8 · 2025: 8 · 2024: 12 · 2023: 11 · 2022: 9 · 2021: 10 · 2020: 10 · 2019: 9 · 2018: 15 · 2017: 10 · 2016: 6 · 2015: 5 · 2014: 9 · 2013: 9 · 2012: 9
FWCI
7.86
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Agricultural and Food Chemistry (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
  • Warwick Research Archive Portal (University of Warwick) (submittedVersion)
Funders
  • Australian Synchrotron
  • Biotechnology and Biological Sciences Research Council
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Selenium in Biological Systems
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Micronutrient Interactions and Effects
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Toxicology › Organoselenium and organotellurium chemistry
Keywords
selenium speciation, rice, selenate, selenite, selenomethionine, water management, floods, aerobic soil, selenium fertilization, soil pore water, XANES
MeSH terms
Fertilizers, Oryza, Selenium, Soil, Water, Selenium Compounds, Floods, Agricultural Irrigation

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