Effects of Decabromodiphenyl Ether and Elevated Carbon Dioxide on Rice (Oryza sativa L.)

Bull Environ Contam Toxicol. 2020 Aug;105(2):237-243. doi: 10.1007/s00128-020-02928-4. Epub 2020 Jul 10.

Abstract

We assessed the effects of carbon dioxide (CO2) and decabromodiphenyl ether (BDE-209, 0, 3 and 30 mg/kg) on rice (Oryza sativa L. cv. Wuyunjing) in field free-air CO2 enrichment system. Rice at elevated (580 ppm) CO2 had increased net photosynthetic rate, intercellular CO2 concentration, shoot biomass, yield and phosphorus content in grains. However, there were no significant changes in such parameters observed on rice at elevated CO2 combined with BDE-209 (3 and 30 mg/kg). Elevated CO2 alone had no significant effects on sugar or starch content in rice grains, whereas its combination with BDE-209 (3 mg/kg) significantly decreased grain sugar and starch content. In conclusion, rice reared in soil polluted by BDE-209 under elevated CO2 modulates the effects in grain feature.

Keywords: BDE-209; Biomass; Carbon dioxide; Photosynthesis; Rice.

MeSH terms

  • Biomass
  • Carbon Dioxide / analysis
  • Carbon Dioxide / toxicity*
  • China
  • Climate Change
  • Edible Grain / chemistry
  • Edible Grain / drug effects
  • Halogenated Diphenyl Ethers / analysis
  • Halogenated Diphenyl Ethers / toxicity*
  • Oryza / chemistry
  • Oryza / drug effects*
  • Photosynthesis / drug effects
  • Soil / chemistry
  • Soil Pollutants / analysis
  • Soil Pollutants / toxicity*

Substances

  • Halogenated Diphenyl Ethers
  • Soil
  • Soil Pollutants
  • Carbon Dioxide
  • decabromobiphenyl ether