Draft sequencing and comparative genomics of Xylella fastidiosa strains reveal novel biological insights

Anamitra Bhattacharyya, Stephanie Stilwagen, Gary Reznik, Helene Feil, William S. Feil, Iain Anderson, Axel Bernal, Mark D'Souza, Natalia Ivanova, Vinayak Kapatral, Niels Larsen, Tamara Los, Athanasios Lykidis, Eugene Selkov, Theresa L. Walunas, Alexander Purcell, Rob A. Edwards, Trevor Hawkins, Robert Haselkorn, Ross OverbeekNikos C. Kyrpides, Paul F. Predki

Research output: Contribution to journalLetterpeer-review

66 Citations (Scopus)


Draft sequencing is a rapid and efficient method for determining the near-complete sequence of microbial genomes. Here we report a comparative analysis of one complete and two draft genome sequences of the phytopathogenic bacterium, Xylella fastidiosa, which causes serious disease in plants, including citrus, almond, and oleander. We present highlights of an in silico analysis based on a comparison of reconstructions of core biological subsystems. Cellular pathway reconstructions have been used to identify a small number of genes, which are likely to reside within the draft genomes but are not captured in the draft assembly. These represented only a small fraction of all genes and were predominantly large and small ribosomal subunit protein components. By using this approach, some of the inherent limitations of draft sequence can be significantly reduced. Despite the incomplete nature of the draft genomes, it is possible to identify several phage-related genes, which appear to be absent from the draft genomes and not the result of insufficient sequence sampling. This region may therefore identify potential host-specific functions. Based on this first functional reconstruction of a phytopathogenic microbe, we spotlight all unusual respiration machinery as a potential target for biological control. We also predicted and developed a new defined growth medium for Xylella.

Original languageEnglish
Pages (from-to)1556-1563
Number of pages8
JournalGenome Research
Issue number10
Publication statusPublished - 1 Oct 2002
Externally publishedYes


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