''Ralstonia pseudosolanacearum'' is a soil-borne bacterium. It is a vascular phytopathogen that infects host plants through the root system causing wilting disease that causes loss in a wide range of crops. ''R. pseudosolanacearum'' is Gram negative and was originally identified as ''

Ralstonia solanacearum ''Ralstonia solanacearum'' is an aerobic non-spore-forming, Gram-negative, plant pathogenic bacterium. ''R. solanacearum'' is soil-borne and motile with a polar flagellar tuft. It colonises the xylem, causing bacterial wilt in a very wide rang ...

,'' however, in 2014 Safni et al. proposed a taxonomic revision of the ''Ralstonia solanacearum'' species complex to reclassify phylotype strains, including ''R. pseudosolanacearum'' (''R. solanacearum'' Phylotype I and III)''.'' ''R. pseudosolanacearum'' has been reported in a wide variety of crops including ornamental roses (''Rosa sp.)'', tomato (''Solanum lycopersicum), sweet pepper (Capsicum'' ''annum'') and eggplant (''Solanum melongena).'' Recent studies have found significant differences in disease severity influenced by higher temperatures (28°C) indicating temperature may be a virulence factor upon host colonization. The same study also reported wound inoculation resulted in higher disease severity regardless of temperatures tested (20°C -vs- 28°C) in addition to potential implications of latent infections.

Genetics (Strain Tg03)

* Median GC content: 66.9327% * Genome size (Mp): 5.75905 * Strain Tg03 Genome size (genes): 5463 * NCBI Accession number: GCA_003725665.1

Methods of detection

Diagnostic procedures using conventional PCR identification have been established due to the detrimental effects this bacterial pathogen can have. Plants infected by phylotype I have been shown to exhibit wilt, necrosis of the stem and visible internal vascular browning. Due to the severity of

bacterial wilt Bacterial wilt is a complex of diseases that occur in plants such as Cucurbitaceae and Solanaceae (tomato, common bean, etc.) and are caused by the pathogens ''Erwinia tracheiphila'', a gram-negative bacterium, or '' Curtobacterium flaccumfacien ...

in plants, methods of detecting ''R. pseudosolanacearum'' concentrations within drain water have been developed.

Virulence studies

Studies have found that light plays an important role to the colonization of ''Ralstonia pseudosolanacearum'' in tomato plants.

References

{{Taxonbar, from=Q62892708 Wikipedia Student Program Burkholderiales Bacterial plant pathogens and diseases