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Home • Puccinia coronata avenae 12SD80
Puccinia coronata f. sp. avenae infection in cultivated oat. Image
provided by Dr. Melania Figueroa.
Puccinia coronata f. sp. avenae infection in cultivated oat. Image provided by Dr. Melania Figueroa.

The basidiomycete fungus Puccinia coronata f. sp. avenae (Pca) is the causal agent of oat crown rust. This pathogen is highly prevalent in all oat growing regions throughout the world. Like other cereal rust fungi, Pca exhibits an obligate biotrophic lifestyle and remains as a dikaryotic organism during the vast majority of its life cycle. The life cycle of Pca involves asexual and sexual reproduction in two unrelated host species. The asexual phase of the life cycle occurs in cultivated (Avena sativa) and wild oat species, while the sexual phase can be completed in members of the Rhamnus genus such as R. cathartica (common buckthorn). Asexual and sexual populations of Pca display high virulence phenotypic variation; therefore understanding haplotype diversity is an important aspect in the characterization of the species. To create resources to investigate the biology of this pathogen, the genomes of two Pca isolates (12SD80 and 12NC29) were assembled and phased to assess haplotype diversity. The haploid genome size for 12SD80 and 12NC29 is 99.16 and 105.25 Mbp, respectively and consistent with findings in other rust species ~53% the genome of Pca contains repetitive sequences.

The genome sequence and gene models of Puccinia coronata avenae 12SD80 were not determined by the Joint Genome Institute (JGI), but were provided by the Figueroa lab on August 4th, 2017. In order to allow comparative analyses with other fungal genomes sequenced by the JGI, a copy of this genome is incorporated into Mycocosm. JGI tools were used to automatically annotate predicted proteins. Please note that this copy of the genome is not maintained by the Figueroa lab and is therefore not automatically updated.

If you use this genome in your research, please cite:

Miller, M. E., Zhang, Y., Omidvar, V., Sperschneider, J., Schwessinger, B., Raley, C., Palmer, J. M., Garnica, D., Upadhyayah, N., Rathjen, J., Taylor, J. M., Park, R. F., Dodds, P. N., Hirsch, C. D., Kianian, S. F. and Figueroa, M. 2017. De novo assembly and phasing of dikaryotic genomes from two isolates of Puccinia coronata f. sp. avenae, the causal agent of oat crown rust. BioRxiv. https://doi.org/10.1101/179226

Genome Reference(s)