Comparative Genomics of Cultured and Uncultured Strains Suggests Genes Essential for Free-Living Growth of Liberibacter
- Univ. of Florida, Gainesville, FL (United States). Inst. of Food and Agricultural Sciences. Microbiology and Cell Science Dept.; DOE/OSTI
- Univ. of Florida, Gainesville, FL (United States). Inst. of Food and Agricultural Sciences. Microbiology and Cell Science Dept.
- Argonne National Lab. (ANL), Argonne, IL (United States). Mathematics and Computer Science Division
- Univ. of Florida, Lake Alfred FL (United States). Inst. of Food an dAgricultural Sciences. Citrus Research and Development Center. Plant Pathology Dept.
The full genomes of two uncultured plant pathogenic Liberibacter, Ca. Liberibacter asiaticus and Ca. Liberibacter solanacearum, are publicly available. Recently, the larger genome of a closely related cultured strain, Liberibacter crescens BT-1, was described. To gain insights into our current inability to culture most Liberibacter, a comparative genomics analysis was done based on the RAST, KEGG, and manual annotations of these three organisms. In addition, pathogenicity genes were examined in all three bacteria. Key deficiencies were identified in Ca. L. asiaticus and Ca. L. solanacearum that might suggest why these organisms have not yet been cultured. Over 100 genes involved in amino acid and vitamin synthesis were annotated exclusively in L. crescens BT-1. However, none of these deficiencies are limiting in the rich media used to date. Other genes exclusive to L. crescens BT-1 include those involved in cell division, the stringent response regulatory pathway, and multiple two component regulatory systems. These results indicate that L. crescens is capable of growth under a much wider range of conditions than the uncultured Liberibacter strains. No outstanding differences were noted in pathogenicity-associated systems, suggesting that L. crescens BT-1 may be a plant pathogen on an as yet unidentified host.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER). Earth and Environmental Systems Science Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1627668
- Journal Information:
- PLoS ONE, Journal Name: PLoS ONE Journal Issue: 1 Vol. 9; ISSN 1932-6203
- Publisher:
- Public Library of ScienceCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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