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Microsatellite analysis indicates that Puccinia psidii in Australia is mutating but not recombining


da S Machado, P and Alfenas, AC and Alfenas, RF and Mohammed, CL and Glen, M, Microsatellite analysis indicates that Puccinia psidii in Australia is mutating but not recombining, Australasian Plant Pathology, 44, (4) pp. 455-462. ISSN 0815-3191 (2015) [Refereed Article]

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Copyright 2015 Australasian Plant Pathology Society

DOI: doi:10.1007/s13313-015-0364-5


Puccinia psidii is considered a biosecurity threat in Australia because of its broad host range that includes many species of Myrtaceae which dominate Australian ecosystems. Since it was first reported in this country, in April 2010, there has been little information about the population structure of the pathogen. In this study, six microsatellite loci were analysed to determine the genetic relationship among rust specimens from different hosts and locations in Australia, New Caledonia, Hawaii and China. The Chinese and New Caledonian specimens share a multi-locus genotype with the majority of the Australian specimens. The results also indicated a close relationship between Australian and Hawaiian samples. At present, the P. psidii population in Australia is genetically uniform with no evidence of sexual recombination. Five of the 104 collections varied by one allele at single loci, indicating that mutations are common but persistence of the mutants in the population may be less common.

Item Details

Item Type:Refereed Article
Keywords:myrtaceae, myrtle rust, plant disease, genotyping
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant pathology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Other plant production and plant primary products
Objective Field:Other plant production and plant primary products not elsewhere classified
UTAS Author:Mohammed, CL (Professor Caroline Mohammed)
UTAS Author:Glen, M (Dr Morag Glen)
ID Code:104312
Year Published:2015
Web of Science® Times Cited:23
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2015-11-09
Last Modified:2017-11-03

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