期刊
MYCOLOGIA
卷 102, 期 1, 页码 54-61出版社
ALLEN PRESS INC
DOI: 10.3852/08-198
关键词
biological control; Diaporthe; saffron thistle
类别
资金
- EH Graham Centre
A large number of isolates of Phomopsis sp. have been collected from the weed Carthamus lanatus (saffron thistle) in Australia, and their potential as biological control agents for weeds of the Asteraceae has been demonstrated. An analysis of their genetic diversity and a multigene phylogenetic analysis were undertaken to ascertain whether these isolates were distinct from other species of Phomopsis that commonly attack crop species in Australia. Minimal variation was found between the Phomopsis spp. isolated front saffron thistle, except two isolates that appeared to share identify with Diaporthe helianthii and P. viticola. Analysis of the selected isolates from saffron thistle With the nucleotide sequence of the partial ITS and tef1-alpha. regions demonstrated that the sequences were distinct from all other species of Phomopsis so far described from crops in Australia. These findings provide strong support for the recognition of these isolates as a separate species of Phomopsis. The implications of these findings are discussed in relation to biological control of saffron thistle.
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