High-yielding nitrate transporter cultivars also mitigate methane and nitrous oxide emissions in paddy.

ABSTRACT: Development of high yield rice varieties is critical to ensuring global food security. However, the emission of greenhouse gases (GHG) such as Methane (CH₄) and Nitrous oxide (N₂O) from paddy fields threatens environmental sustainability. In this study, we selected overexpressed high-affinity nitrate transporters (NRT2.3 along with their partner protein NAR2.1) cultivars, which are effective nitrogen use efficient transgenic lines pOsNAR2.1: OsNAR2.1 (Ox2) and p35S:OsNRT2.3b (O8). We used high (270 kg N/ha) and low (90 kg N/ha) nitrogen (N) fertilizers in paddy fields to evaluate morphophysiological traits, including GHG emission. We found that Ox2 and O8 reduced CH₄ emissions by 40% and 60%, respectively, compared to their wild type (WT). Dur

SUBMITTER: Iqbal MF 

PROVIDER: S-EPMC9992815 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature