bioRxivJClub
A conserved tetrapolar mating system permits sexual hybridization and recombinant host phenotypes in wheat- and barley-adapted Puccinia striiformis
bioRxiv · · Preprint · Open access
Mojerlou, Luo + 5 more
Abstract ↗AI summary
The abstract is read at the publisher; the summary is JClub's.
Reciprocal crosses between wheat-adapted Puccinia striiformis f. sp. tritici and barley-adapted P. striiformis f. sp. hordei on Berberis vulgaris produced 18 viable aeciospore-derived progeny despite strong host specialization.
- Why it matters: Host specialization can limit gene flow in fungal pathogens, but it is unclear whether sexual compatibility can persist when mating occurs on a shared alternate host.
- What they did: The study performed reciprocal crosses on Berberis vulgaris and used chromosome-scale parental assemblies to show HD and PR mating-type loci are physically unlinked, then phenotyped the progeny.
- The result: Progeny inherited one HD haplotype from each parent, covering all four parental HD haplotype combinations, and showed host-interaction profiles distinct from both parents, including compatibility with selected wheat and barley genotypes.
The findingWhy it mattersWhat they didThe result
- Open access
- 1 cites