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Morphology of the microcyclic rust fungus, Puccina boroniae, in Western Australia
Conference presentation   Open access

Morphology of the microcyclic rust fungus, Puccina boroniae, in Western Australia

S. Driessen, P.A. O'Brien and G.E.St.J. Hardy
15th Australasian Plant Pathology Society Conference (Geelong, Vic, 26/09/2005–29/09/2005)
2005
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Abstract

Boronia is an aromatic Australian native wildflower. Several species endemic to Western Australia are commercially cultivated for the cut flower market. Puccinia boroniae is an important rust pathogen of the two most common Boronia species grown commercially, B. heterophylla and B. megastigma, and was first described by Hennings in 1903., Only the telial stage has been observed in the field and recorded. P. boroniae has been described as a microcyclic rust fungus with teliospores able to germinate without a period of dormancy, however no reference to germination structures or host inoculations confirming this have been published. The objectives of this study were to provide a current and detailed morphological description of the various spore stages observed in the field, to describe the teliospore germination structures and basidiospores, and to confirm the lifecyc1e of P.boroniae.

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