Linde Group - Population genetics, evolution, phylogeography and molecular phylogenetics of fungi

Our main research interest is in fungal-plant-interactions, both applied and pure research, on a range of important pathogens.

About

Our main research interest is in fungal-plant-interactions. Our work includes both applied and pure research on a range of important pathogens including barley scald, barley net blotch, Ascochyta on chickpea, Phytophthora etc. We study evolutionary aspects of plant-pathogen-interactions, often utilising population genetic tools to investigate pathogen biology. We are also investigating the mycorrhizal-plant interactions, mycorrhizal fungi species diversity, population diversity and host specificity of orchid mycorrhizae. Speciation processes in orchids are facilitated by specific pollinator interactions, and possibly mycorrhizal interactions. We are using sexually deceptive orchids to study these interactions.

Publications

Selected publications

  • Linde, C. C. and Smith L. M. 2019. Host specialisation and disparate evolution of Pyrenophora teres f. teres on barley and barley grass. BMC Evolutionary Biology 19 :130. https://doi.org/10.1186/s12862-019-1446-8.
  • Reiter, N., Lawrie, A. C. and Linde, C. C. 2018. Matching symbiotic associations of an endangered orchid to habitat to improve conservation outcomes. Annals of Botany 122: 947-959, 00. https://doi.org/10.1093/aob/mcy094.
  • Ruibal, M. P., Triponez, Y., Smith, L. M., Peakall, R. and Linde, C. C. 2017. Population structure of an orchid mycorrhizal fungus with genus-wide specificity. Scientific Reports 7:5613. DOI:10.1038/s41598-017-05855-3.
  • Carstens, E., Linde, C. C., Slabbert, R., Miles, A. K., Donovan, N. J., Hongye, L., Zhang, K., Dewdney, M. M., Rollins, J. A., Glienke, C., Schutte, G. C., Fourie, P. H., McLeod, A. 2017. A global perspective on the population structure and reproductive system of Phyllosticta citricarpa, a pathogen of citrus. Phytopathology 107:1-11. http://dx.doi.org/10.1094/PHYTO-08-16-0292-R.
  • Linde, C. C., Smith LM, Peakall R. 2016. Weeds, as ancillary hosts, pose disproportionate risk for virulent pathogen transfer to crops. BMC Evolutionary Biology 16:1-12.
  • Linde, C. C.; Phillips, R. D.; Crisp, M. D.; et al., Congruent species delineation of Tulasnella using multiple loci and methods, New Phytologist 201(1) 6-12. 2014
  • Sakaguchi, Shota; Bowman, David M. J. S.; Prior, Lynda D.; et al., Climate, not Aboriginal landscape burning, controlled the historical demography and distribution of fire-sensitive conifer populations across Australia, Proceedings of the Royal Society B: Biological Sciences, 280(1773). 2013.
  • Biddle, J. M.; Linde, C.; Godfree, R. C., Co-infection patterns and geographic distribution of a complex pathosystem targeted by pathogen-resistant plants Ecological Applications 22(1) 35-52. 2012
  • Linde, C. C., and Selmes, H. 2012. Genetic diversity and mating type distribution of Tuber melanosporum in artificially planted truffiéres in Australia: Significance to truffle cultivation. Applied and Environmental Microbiology, 78: 6534-6539.
  • McDonald, B. A., and Linde, C. C. 2002. Pathogen population genetics, evolutionary potential, and durable resistance. Annual Review of Phytopathology 40: 349-379.

Projects

The ARMF willsupport research to assess the extent and effects of changing climate, water and fire regimes on ecosystem processes and their feedbacks and provide a structure for integrated research, management and governance of Australia's mountains.

Theme

Behavioural, evolutionary and physiological ecology, Evolutionary genetics and genomics, Phylogenetics, population genetics and biodiversity, Plant environmental biology and functional ecology, Plant-microbe interactions

Student intake

Open for Bachelor, Honours, Master, PhD students

Status

Current

People

This project aims to improve understanding of the capacity for resilience and response to warming and drying conditions and extreme events in vulnerable alpine communities: interacting suites of alpine plants, soil invertebrates, fungi, and microbes.

Theme

Behavioural, evolutionary and physiological ecology, Evolutionary genetics and genomics, Phylogenetics, population genetics and biodiversity, Plant environmental biology and functional ecology, Plant-microbe interactions

Student intake

Open for Summer scholar, Honours, Master, PhD students

Status

Current

People

Next generation genome sequencing provide multiple opportunities to compare genomes of fungi which are either pathogens or mycorrhizae, in an attempt to gain an understanding of the genes involved in beneficial plant-fungus interactions.

Theme

Bioinformatics and bio-mathematical modelling, Evolutionary genetics and genomics, Host-microbe biology

Student intake

Open for PhD students

Status

Current

People

The proposed PhD research program will use the relationship between the orchid genera Chiloglottis and Arthrochilus and their obligate mycorrhizae to examine speciation in co-evolved taxa. It has been suggested the evolution of the recently diverged Chiloglottis may be attributable to its association with a particular mycorrhizal species however evolution of this sexually-deceptive orchid genus is known to be influenced by a species-specific pollinator relationship

Theme

Host-microbe biology, Phylogenetics, population genetics and biodiversity, Plant-microbe interactions

Student intake

Open for PhD students

Status

Current

People