期刊
PERSOONIA
卷 22, 期 -, 页码 1-13出版社
RIJKSHERBARIUM
DOI: 10.3767/003158509X415450
关键词
decline; dieback; forest; jarrah; phylogeny; Phytophthora citricola; tuart
类别
资金
- Australian Research Council and industry partners [LP0346931, LP0668195]
- Janet Webster and Juanita Ciampini (VHS)
- Australian Research Council [LP0346931, LP0668195] Funding Source: Australian Research Council
A new Phytophthora species, isolated from rhizosphere soil of declining or dead trees of Eucalyptus gomphocephala, E marginata, Agonis flexuosa, and another 13 plant species, and from fine roots of E. marginata and collar lesions of Banksia attenuata in Western Australia, is described as Phytophthora multivora sp. nov. It is homothallic and produces semipapillate sporangia, smooth-walled oogonia containing thick-walled oospores, and paragynous antheridia. Although morphologically similar to P. citricola, phylogenetic analyses of the ITS and cox1 gene regions demonstrate that P multivora is unique. Phytophthora multivora is pathogenic to bark and cambium of E. gomphocephala and E marginata and is believed to be involved in the decline syndrome of both eucalypt species within the tuart woodland in south-west Western Australia.
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