The basidiomycete fungus Puccinia graminis f. sp.
tritici (Pgt) is the causal agent of stem rust in wheat
and barley. Since the emergence of Pgt Ug99 in Uganda in 1998 the
strain has given rise to at least 12 variants which are known as
the Ug99 lineage. Through comparative genomic approaches Li et al.,
2019 have found conclusive evidence that the Ug99 lineage of Pgt
arose via a somatic hybridization event, in which whole nuclear
exchange occurred between an isolate from the Pgt 21 lineage found
in South Africa and another unknown isolate. Li et al., 2019
completed a haplotype-phased assembly for Pgt Ug99 and the
Australian isolate Pgt21-0, which belongs to the South African
Pgt21 lineage. As part of this work, 18 chromosome pseudomolecules
for haplotypes A and B of Pgt21-0 were reconstructed.
This portal contains genomic data from haplotype A of Pgt
Ug99.
The genome sequence and gene models provided here were not
determined by the Joint Genome Institute (JGI), but were provided
by Li et al., 2019 on Sept 19, 2019. In order to allow comparative
analyses with other fungal genomes sequenced by the JGI, a copy of
this genome is incorporated into Mycocosm.
Please note that this copy of the genome is not maintained by the
authors and is therefore not automatically updated.
Genome Reference(s)
Li F, Upadhyaya NM, Sperschneider J, Matny O, Nguyen-Phuc H, Mago R, Raley C, Miller ME, Silverstein KAT, Henningsen E, Hirsch CD, Visser B, Pretorius ZA, Steffenson BJ, Schwessinger B, Dodds PN, Figueroa M
Emergence of the Ug99 lineage of the wheat stem rust pathogen through somatic hybridisation.
Nat Commun. 2019 Nov 7;10(1):5068. doi: 10.1038/s41467-019-12927-7