PD Dr. Mika Tarkka
Plant beneficial micro-organisms
My scientific work is devoted to answering the question how soil microorganisms affect plant growth and stress resistance, and whether these interactions can be used to benefit plant health. In particular, my colleagues and I work with micro-organisms associated with pedunculate oak, and our models of biotic interactions include streptomycetes, fungal mutualists and pathogens. Our current work on ectomycorrhizal symbiosis assesses the physiology and molecular interactions from both the host plant’s and the symbiotic fungus’ point of view. While much of the current work focusses on genome regulation, my colleagues and I have also performed analyses on soil bacterial communities influencing plant and fungal resistance against parasites, and playing out in decomposition and nutrient mobilisation. My main motivation in this research field is to contribute to the assessment of the overall impact of microorganisms on plant health, and to assess the existing uses of microbes for improved plant production. Overall, I believe that combination of model systems with field work pave the way for a novel, more dynamic view on plant-microbe interactions.
Caravaca, F., Maboreke, H., Kurth, F., Herrmann, S., Tarkka, M.T., Ruess, L. (2015) Synergists and antagonists in the rhizosphere modulate microbial communities and growth of Quercus robur L.
Soil Biology and Biochemistry 82, 65-73 DOI:10.1016/j.soilbio.2014.12.004
Herrmann, S., Recht, S., Boenn, M., Feldhahn, L., Angay, O., Fleischmann, F., Tarkka, M. T., Grams, T. E. E., Buscot, F. (2015) Endogenous rhythmic growth in oak trees is regulated by internal clocks rather than resource availability.
Journal of Experimental Botany DOI:10.1093/jxb/erv408
Kohler, A., Kuo, A., Nagy, L.G., Morin, E., Barry, K.W., Buscot, F., Canbäck, B., Choi, C., Cichocki, N., Clum, A., et al. (2015) Convergent losses of decay mechanisms and rapid turnover of symbiosis genes in mycorrhizal mutualists.
Nature Genetics DOI:10.1038/ng.3223
Kurth, F., Feldhahn, L., Bönn, M., Herrmann, S., Buscot, F., Tarkka M. T. (2015) Large scale transcriptome analysis reveals interplay between development of forest trees and a beneficial mycorrhiza helper bacterium.
BMC Genomics 16, 658. DOI:10.1186/s12864-015-1856-y
Lesur, I., Le Provost, G., Bento, P., Da Silva, C., Leplé, J-C., Murat, F., Ueno, S., Bartholomé, J., Lalanne, C., Ehrenmann, F., et al. (2015) The oak gene expression atlas: insights into Fagaceae genome evolution and the discovery of genes regulated during bud dormancy release
BMC Genomics 16, 112. DOI:10.1186/s12864-015-1331-9
Tarkka, M.T., Feldhahn, L., Buscot, F., Wubet, T. (2015) Genome sequence of the Mycorrhiza Helper Bacterium Streptomyces sp. strain AcH 505.
Genome Announcements 3, e01386-14 DOI:10.1128/genomeA.01386-14
Tarkka, M.T., Feldhahn, L., Krüger, D., Arnold, N., Buscot, F., Wubet, T. (2015) Draft genome sequence of Streptomyces sp. strain 150FB, a mushroom mycoparasite antagonist.
Genome Announcements 3, e01441-14 DOI:10.1128/genomeA.01441-14
Frey-Klett, P., Burlinson, P., Deveau, A., Barret, M., Tarkka, M.T., Sarniguet, A. (2011)
Bacterial-fungal interactions: hyphens between agricultural, clinical, environmental, and food microbiologists
Microbiology Molecular Biology Reviews 75, 583-609. DOI:10.1128/MMBR.00020-11
Schrey S.D., Tarkka M.T. (2008)
Friends and foes: streptomycetes as modulators of plant disease and symbiosis.
Antonie van Leeuvenhoek 49, 11-19. DOI:10.1007/s10482-008-9241-3
Frey-Klett P., Garbaye J., Tarkka M.T. (2007)
The mycorrhiza helper bacteria revisited.
New Phytologist 176, 22-36. DOI:10.1111/j.1469-8137.2007.02191.x