Green fluorescent protein transformation sheds more light on a widespread mycoparasitic interaction
Article
Article Title | Green fluorescent protein transformation sheds more light on a widespread mycoparasitic interaction |
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ERA Journal ID | 2639 |
Article Category | Article |
Authors | Nemeth, Mark Z. (Author), Pintye, Alexandra (Author), Horvath, Aron N. (Author), Vagi, Pal (Author), Kovacs, Gabor M. (Author), Gorfer, Markus (Author) and Kiss, Levente (Author) |
Journal Title | Phytopathology: International Journal of the American Phytopathological Society |
Journal Citation | 109 (8), pp. 1404-1416 |
Number of Pages | 13 |
Year | 2019 |
Publisher | American Phytopathological Society |
Place of Publication | United States |
ISSN | 0031-949X |
1943-7684 | |
Digital Object Identifier (DOI) | https://doi.org/10.1094/PHYTO-01-19-0013-R |
Web Address (URL) | https://apsjournals.apsnet.org/doi/10.1094/PHYTO-01-19-0013-R |
Abstract | Powdery mildews, ubiquitous obligate biotrophic plant pathogens, are often attacked in the field by mycoparasitic fungi belonging to the genus Ampelomyces. Some Ampelomyces strains are commercialized biocontrol agents of crop pathogenic powdery mildews. Using Agrobacterium tumefaciens-mediated transformation (ATMT), we produced stable Ampelomyces transformants that constitutively expressed green fluorescent protein (GFP) to (i) improve the visualization of the mildew–Ampelomyces interaction and (ii) decipher the environmental fate of Ampelomyces fungi before and after acting as a mycoparasite. Detection of Ampelomyces structures, and especially hyphae, was greatly enhanced when diverse powdery mildew, leaf, and soil samples containing GFP transformants were examined with fluorescence microscopy compared with brightfield and differential interference contrast optics. We showed for the first time, to our knowledge, that Ampelomyces strains can persist up to 21 days on mildew-free host plant surfaces, where they can attack powdery mildew structures as soon as these appear after this period. As saprobes in decomposing, powdery mildew-infected leaves on the ground and also in autoclaved soil, Ampelomyces strains developed new hyphae but did not sporulate. These results indicate that Ampelomyces strains occupy a niche in the phyllosphere where they act primarily as mycoparasites of powdery mildews. Our work has established a framework for a molecular genetic toolbox for the genus Ampelomyces using ATMT. |
Keywords | tritrophic interactions; GFP transformation; powdery mildew; plant pathology |
ANZSRC Field of Research 2020 | 310705. Mycology |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Hungarian Academy of Sciences, Hungary |
Eotvos Lorand University (ELTE), Hungary | |
University of Natural Resources and Life Sciences, Austria | |
Centre for Crop Health | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5583/green-fluorescent-protein-transformation-sheds-more-light-on-a-widespread-mycoparasitic-interaction
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