Nitrogen Addition Decreases Dissimilatory Nitrate Reduction to Ammonium in Rice Paddies
Arjun Pandey, Helen Suter, Ji-Zheng He, Hang-Wei Hu, Deli Chen
APPLIED AND ENVIRONMENTAL MICROBIOLOGY | AMER SOC MICROBIOLOGY | Published : 2018
Dissimilatory nitrate reduction to ammonium (DNRA), denitrification, anaerobic ammonium oxidation (anammox), and biological N2 fixation (BNF) can influence the nitrogen (N) use efficiency of rice production. While the effect of N application on BNF is known, little is known about its effect on NO3- partitioning between DNRA, denitrification, and anammox. Here, we investigated the effect of N application on DNRA, denitrification, anammox, and BNF and on the abundance of relevant genes in three paddy soils in Australia. Rice was grown in a glasshouse with N fertilizer (150 kg N ha-1) and without N fertilizer for 75 days, and the rhizosphere and bulk soils were collected separately for laborato..View full abstract
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Awarded by ACIAR
Awarded by ARC
This research was funded by ACIAR (grant no. SMCN/2014/044) and ARC (grant no. DP160101028).