Phomopsis husk rot of macadamia in Australia and South Africa caused by novel Diaporthe species
Article
Article Title | Phomopsis husk rot of macadamia in Australia and South Africa caused by novel Diaporthe species |
---|---|
ERA Journal ID | 2652 |
Article Category | Article |
Authors | Wrona, Christopher J. (Author), Mohankumar, Vheena (Author), Schoeman, Maritha H. (Author), Tan, Yu P. (Author), Shivas, Roger G.S. (Author), Jeff-Ego, Olumide S. (Author) and Akinsanmi, Olufemi A. (Author) |
Journal Title | Plant Pathology |
Journal Citation | 69 (5), pp. 911-921 |
Number of Pages | 11 |
Year | 2020 |
Publisher | John Wiley & Sons |
Place of Publication | United Kingdom |
ISSN | 0032-0862 |
1365-3059 | |
Digital Object Identifier (DOI) | https://doi.org/10.1111/ppa.13170 |
Web Address (URL) | https://bsppjournals.onlinelibrary.wiley.com/doi/epdf/10.1111/ppa.13170 |
Abstract | Phomopsis husk rot (PHR) in macadamia is a disease of economic importance in major commercial production areas in Australia and South Africa. Effective control of PHR is hindered by limited knowledge about its aetiology and epidemiology. The diversity and pathogenicity of more than 50 isolates of Diaporthe associated with PHR in macadamia orchards in Australia and South Africa was assessed. Multilocus phylogenetic analyses of DNA sequences of the ITS, tef1α, and tub2 gene loci revealed four novel clades that are described as Diaporthe australiana sp. nov., D. drenthii sp. nov., D. macadamiae sp. nov., and D. searlei sp. nov. Pathogenicity tests with representative isolates found that all four species caused PHR of varying severity between and within species, as well as between the two macadamia cultivars HAES 344 and HAES 816. The Australian species, D. australiana, was the most aggressive species compared with the three South African species. This study improves our understanding of the aetiology of PHR in macadamia and paves the way for more effective disease management. |
Keywords | disease severity; fruit pericarp; Phomopsis; Proteaceae; tree nut |
ANZSRC Field of Research 2020 | 300804. Horticultural crop protection (incl. pests, diseases and weeds) |
310705. Mycology | |
Byline Affiliations | University of Queensland |
Agricultural Research Council, South Africa | |
Department of Agriculture and Fisheries, Queensland | |
Centre for Crop Health | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5v1z/phomopsis-husk-rot-of-macadamia-in-australia-and-south-africa-caused-by-novel-diaporthe-species
Download files
Accepted Version
Phomopsis-husk-rot-of-macadamia-in-Australia-and-South-Africa-caused-by-novel-Diaporthe-species.pdf | ||
File access level: Anyone |
152
total views275
total downloads1
views this month1
downloads this month