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Green and brown bridges between weeds and crops reveal novel Diaporthe species in Australia

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Thompson, S. M., Tan, Y. P., Shivas, R. G., Neate, S. M., Morin, L., Bissett, A. and Aitken, E. A. B. (2015) Green and brown bridges between weeds and crops reveal novel Diaporthe species in Australia. Persoonia - Molecular Phylogeny and Evolution of Fungi, 35 (1). pp. 39-49.


Article Link: http://dx.doi.org/10.3767/003158515X687506


Diaporthe (syn. Phomopsis) species are well-known saprobes, endophytes or pathogens on a range of plants. Several species have wide host ranges and multiple species may sometimes colonise the same host species. This study describes eight novel Diaporthe species isolated from live and/or dead tissue from the broad acre crops lupin, maize, mungbean, soybean and sunflower, and associated weed species in Queensland and New South Wales, as well as the environmental weed bitou bush (Chrysanthemoides monilifera subsp. rotundata) in eastern Australia. The new taxa are differentiated on the basis of morphology and DNA sequence analyses based on the nuclear ribosomal internal transcribed spacer region, and part of the translation elongation factor-1α and ß-tubulin genes. The possible agricultural significance of live weeds and crop residues ('green bridges') as well as dead weeds and crop residues ('brown bridges') in aiding survival of the newly described Diaporthe species is discussed.

Item Type:Article
Business groups:Biosecurity Queensland
Live Archive:09 Feb 2016 01:35
Last Modified:22 Mar 2022 03:56

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