Variations in microbial community and di-(2-ethylhexyl) phthalate (DEHP) dissipation in different rhizospheric compartments between low- and high-DEHP accumulating cultivars of rice (Oryza sativa L.)

Xue-Xue CHEN, Yang WU, Xian-Pei HUANG, Huixiong LÜ, Hai-Ming ZHAO, Ce-Hui MO, Hui LI, Quan-Ying CAI, Ming Hung WONG

Research output: Contribution to journalArticles

7 Citations (Scopus)

Abstract

Di-(2-ethylhexyl) phthalate (DEHP) is a typical endocrine disrupting chemical with relatively high concentrations in agricultural soils of China. Here, a rhizobox experiment was conducted to investigate the variations in microbial community and DEHP dissipation among different soil rhizospheric compartments between low (Fengyousimiao) and high (Peizataifeng) DEHP-accumulating cultivars of rice (Oryza sativa L.) grown in DEHP spiked soil (0, 20, 100 mg/kg). The dissipation rates of DEHP in rhizospheric soils of Peizataifeng were generally significantly higher than those of Fengyousimiao, with the highest removal rate in 0–2 mm rhizosphere. The results of Illumina-HiSeq high-throughput sequencing revealed that both bacterial and fungal diversity and community structure were significantly different in rhizospheric soils of the two cultivars. DEHP dissipation rates in 0–2 mm rhizosphere of Peizataifeng were positively correlated with bacterial and fungal diversity. The relative abundance of DEHP-degrading bacterial genera Acinetobacter, Pseudomonas and Bacillus of Peizataifeng was generally higher than those in the same rhizospheric compartment of Fengyousimiao in DEHP treatments, resulting in different rhizospheric DEHP dissipation. Cultivation of Peizataifeng in agricultural soil is promising to facilitate DEHP dissipation and ensure safety of agricultural products. Copyright © 2018 Elsevier Inc. All rights reserved.
Original languageEnglish
Pages (from-to)567-576
JournalEcotoxicology and Environmental Safety
Volume163
Early online dateAug 2018
DOIs
Publication statusPublished - Nov 2018

Citation

Chen, X.-X., Wu, Y., Huang, X.-P., Lü, H., Zhao, H.-M., Mo, C.-H., . . . Wong, M.-H. (2018). Variations in microbial community and di-(2-ethylhexyl) phthalate (DEHP) dissipation in different rhizospheric compartments between low- and high-DEHP accumulating cultivars of rice (Oryza sativa L.). Ecotoxicology and Environmental Safety, 163, 567-576. doi: 10.1016/j.ecoenv.2018.07.097

Keywords

  • Phthalic acid esters
  • Microbial community
  • Rhizospheric soil
  • Genotypic variation
  • Dissipation

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