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Plant Science Today (PST)

Research Articles

Vol. 12 No. 3 (2025)

Genomic insights into the antifungal and plant growth promoting traits of Pseudomonas plecoglossicida NAN2 isolated from the rice rhizosphere

DOI
https://doi.org/10.14719/pst.8862
Submitted
14 April 2025
Published
25-06-2025 — Updated on 01-07-2025
Versions

Abstract

Plant growth promoting rhizobacteria (PGPRs) are beneficial microorganisms that inhabit the rhizosphere and enhance plant growth through various mechanisms. In this study, a PGPR strain designated NAN2 was isolated from the rice rhizosphere and demonstrated multiple plant growth-promoting traits, including the production of hydrogen cyanide (HCN), ammonia, indole-3-acetic acid (IAA), phosphate solubilization and antifungal activity against Magnaporthe oryzae. Complete genome sequencing and annotation of strain NAN2 revealed a genome size of 5356785 base pairs (bp) with a GC content of 62 %, comprising 227 contigs, 4807 coding sequences (CDSs) and a total of 4960 genes. Notably, the genome contains a nonribosomal peptide synthetase (NRPS) gene cluster associated with the biosynthesis of rhizomides (A, B and C). These results suggest that NAN2 has strong potential as an environmentally resilient biocontrol agent that can protect plants from invasive diseases. To our knowledge, this is the first genomic analysis of Pseudomonas plecoglossicida NAN2 isolated from rice fields, providing valuable insights into its biocontrol capabilities and plant growth promoting (PGP) properties.

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