Occurrence of fermentative and respiratory dissimilatory nitrate reduction to ammonium (DNRA) in flooded rice soil ecosystems: Potential pathways for nitrogen fertilizer management through organic supplementation

Dissimilatory nitrate reduction to ammonium (DNRA) is recognized as a nitrogen retention pathway in agricultural soils. This study revealed a predominant presence of genes associated with fermentative DNRA in flooded rice soil, as indicated by functional prediction and metagenomic sequencing. Supple...

Full description

Saved in:
Bibliographic Details
Published in:Case studies in chemical and environmental engineering 2024-12, Vol.10, p.100980, Article 100980
Main Authors: Chutivisut, Pokchat, Rison, Kasidit, Mhuantong, Wuttichai, Faiyue, Bualuang
Format: Article
Language:English
Subjects:
Dissimilatory nitrate reduction to ammonia (DNRA)
Fermentative DNRA
Flooded rice soil
Respiratory DNRA
Supplemented carbon-to-nitrate (C/N) ratio
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Dissimilatory nitrate reduction to ammonium (DNRA) is recognized as a nitrogen retention pathway in agricultural soils. This study revealed a predominant presence of genes associated with fermentative DNRA in flooded rice soil, as indicated by functional prediction and metagenomic sequencing. Supplementing organic fertilizer to adjust carbon-to-nitrate (C/N) ratio led to distinctive microbial groups within the soil microbiomes, particularly at the highest C/N ratio (20/1) applied. Several microbial taxa were identified as possessing genes for both fermentative/respiratory DNRA and denitrification, suggesting that these soil microorganisms have the potential to maneuver nitrate reduction through various pathways that are favored under different environments.
ISSN:2666-0164
2666-0164
DOI:10.1016/j.cscee.2024.100980