Login | Request Account (DAF staff only)

Evidence that Austropuccinia psidii may complete its sexual life cycle on Myrtaceae

McTaggart, A. R., Shuey, L. S., Granados, G. M., du Plessis, E., Fraser, S., Barnes, I., Naidoo, S., Wingfield, M. J. and Roux, J. (2018) Evidence that Austropuccinia psidii may complete its sexual life cycle on Myrtaceae. Plant Pathology, 67 (3). pp. 729-734. ISSN 00320862 (ISSN)

Full text not currently attached. Access may be available via the Publisher's website or OpenAccess link.

Article Link(s): https://doi.org/10.1111/ppa.12763

Abstract

The rust fungus Austropuccinia psidii has spread globally and naturalized in areas with naïve species of Myrtaceae. Previous studies have revealed multiple strains of A. psidii within South America and two strains outside of its native range. The rust spreads by windborne mitotic urediniospores, which are the dominant spore stage. Teliospores and basidiospores of A. psidii are also formed; however, the biological role of these stages in the life cycle is unknown. Experiments presented here tested whether basidiospores of A. psidii could infect Syzygium jambos. The sori produced by infection with basidiospores were screened with five microsatellite markers to confirm whether they were a product of recombination. The findings showed that basidiospores of A. psidii could cause infection on species of Myrtaceae and the resulting sori were a product of recombination. This has important implications for programmes that breed for resistance to this aggressive pathogen in commercial eucalypt forestry. © 2017 British Society for Plant Pathology

Item Type:Article
Business groups:Horticulture and Forestry Science
Keywords:eucalyptus rust guava rust myrtle rust Puccinia psidii Pucciniales Uredinales dicotyledon fungus genetic marker infectious disease life cycle native species pathogen recombination rust disease spore South America Eucalyptus Myrtaceae Psidium Syzygium jambos
Subjects:Science > Botany > Genetics
Plant pests and diseases > Plant pathology
Forestry > Research. Experimentation
Deposited On:09 Mar 2021 03:52
Last Modified:09 Mar 2021 03:52

Repository Staff Only: item control page