Insight Into the Variation of Bacterial Structure in Atrazine-Contaminated Soil Regulating by Potential Phytoremediator: Pennisetum americanum (L.) K. Schum

Frontiers in Microbiology
Bo CaoZhao Jiang

Abstract

Although plants of the genus Pennisetum can accelerate the removal of atrazine from its rhizosphere, the roles played by this plant in adjusting the soil environment and soil microorganism properties that might contribute to pollutant removal are incompletely understood. We selected Pennisetum americanum (L.) K. Schum (P. americanum) as the test plant and investigated the interaction between P. americanum and atrazine-contaminated soil, focusing on the adjustment of the soil biochemical properties as well as bacterial functional and community diversity in the rhizosphere using Biolog EcoPlates and high-throughput sequencing of the 16S rRNA gene. The results demonstrate that the rhizosphere soil of P. americanum exhibited higher catalase activity, urease activity and water soluble organic carbon (WSOC) content, as well as a suitable pH for microorganisms after a 28-day incubation. The bacterial functional diversity indices (Shannon and McIntosh) for rhizosphere soil were 3.17 ± 0.04 and 6.43 ± 0.86 respectively, while these indices for non-rhizosphere soil were 2.95 ± 0.06 and 3.98 ± 0.27. Thus, bacteria in the P. americanum rhizosphere exhibited better carbon substrate utilization than non-rhizosphere bacteria. Though atrazine ...Continue Reading

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Citations

Aug 1, 2019·International Journal of Phytoremediation·Edson Aparecido Dos SantosErnani Lopes Possato
Jan 18, 2020·International Journal of Phytoremediation·Luciana Monteiro AguiarJosé Cola Zanuncio
Jun 24, 2021·Brazilian Journal of Biology = Revista Brasleira De Biologia·Edson Aparecido Dos SantosJosé Barbosa Dos Santos

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Methods Mentioned

BETA
PCR
PCA

Software Mentioned

Biology Eco
QIIME
R
Mothur
SPSS
gplots
USEARCH
Canoco
VennDiagram
ade4

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