ArticleMolecular biology reports2022
Nematicidal effects of a peptidase (NlpC/P60) from the phytopathogen Pseudomonas syringae MB03 on the model nematode Caenorhabditis elegans and plant-parasitic Meloidogyne incognita.
Article in Molecular biology reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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4 authors at 1 institution in 2 countries.
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Abstract
backgroundPlant-parasitic nematodes (PPNs) are severe threats to agricultural yields and continue to be challenging to treat in several crops worldwide. Microbial-based control has been suggested as a better alternative to chemical control. In this study, we aimed to identify and characterize nematicidal virulence factors of a common phytopathogenic bacterium, Pseudomonas syringae, mainly focusing on the nematicidal and suppressive activities of an NlpC/P60 family peptidase, namely, Peptidase03, against the model nematode Caenorhabditis elegans and an agriculturally important PPN, Meloidogyne incognita. METHODS AND
resultsGenome-wide virulence factor prediction of the P. syringae wild-type strain MB03 revealed numerous nematode pathogenic determinants. We selected 11 predicted nematicidal genes for cloning and induced expression in an Escherichia coli expression system and then performed comparative nematicidal bioassays on the model nematode C. elegans. The recombinant strain expressing Peptidase03 showed the highest level of toxicity against C. elegans, with 75.9% mortality, compared to the other tested strains. Purified Peptidase03 showed significant toxicity against C. elegans and M. incognita, with half lethal concentration (LC
conclusionsThe Peptidase03 protein from P. syringae MB03 had significant nematicidal and suppressive activities against C. elegans and M. incognita, thereby showing potential for the development of an effective PPN-controlling agent for use in agricultural practice.
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