Pseudomonas salomonii sp. nov., pathogenic on garlic, and Pseudomonas palleroniana sp. nov., isolated from rice

Gardan Louis, Bella Patrizia, Meyer Jean-Marie, Christen Richard, Rott Philippe, Achouak Wafa, Samson Régine. 2002. Pseudomonas salomonii sp. nov., pathogenic on garlic, and Pseudomonas palleroniana sp. nov., isolated from rice. International Journal of Systematic and Evolutionary Microbiology, 52 (6) : 2065-2074.

https://doi.org/10.1099/00207713-52-6-2065

Article de revue ; Article de revue à facteur d'impact

Prévisualisation

Version publiée - Anglais
Utilisation soumise à autorisation de l'auteur ou du Cirad.
519820.pdf
Télécharger (544kB) | Prévisualisation

Résumé : A total of 26 strains, including 15 strains isolated from garlic plants with the typical symptoms of 'Café au lait' disease and 11 strains isolated from diseased or healthy rice seeds and sheaths infested by Pseudomonas fuscovaginae, were compared with 70 type or reference strains of oxiclase-positive pathogenic or non-pathogenic fluorescent pseudomonads. The strains were characterized by using a polyphasic taxonomic approach. Numerical taxonomy of phenotypic characteristics showed that the garlic and rice strains were related to each other. However, they clustered into separate phenons, distinct from those of the other strains tested, and were different in several nutritional tests. On the basis of DNA-DNA hybridization, the garlic and rice strains constituted two distinct DNA hybridization groups, indicating that they belonged to separate species. The two groups of strains were also well differentiated by siderotyping. Garlic strains were pathogenic to garlic plants and either weakly pathogenic or non-pathogenic on rice; rice strains were either weakly pathogenic or non-pathogenic on rice and non-pathogenic on garlic. A phylogenetic analysis of 16S rRNA gene sequences confirmed that the two groups of strains belonged to the [gamma]-Proteobacteria and to the genus Pseudomonas. The names Pseudomonas salomonii sp. nov. and Pseudomonas palleroniana sp. nov. are respectively proposed for the garlic strains and the rice strains. The type strains are P. salomonii CFBP 2022T (= ICMP 14252T = NCPPB 4277T) and P. palleroniana CFBP 4389T (= ICMP 14253T = NCPPB 4278T).

Mots-clés Agrovoc : Pseudomonas, taxonomie, identification, hybridation moléculaire, adn, phénotype, Oryza, Allium sativum

Mots-clés complémentaires : Pseudomonas salomonii

Classification Agris : H20 - Maladies des plantes

Auteurs et affiliations