Publication Date:
2014-06-14
Description:
Ecological theory predicts that disease incidence increases with increasing density of host networks, yet evolutionary theory suggests that host resistance increases accordingly. To test the combined effects of ecological and evolutionary forces on host-pathogen systems, we analyzed the spatiotemporal dynamics of a plant (Plantago lanceolata)-fungal pathogen (Podosphaera plantaginis)relationship for 12 years in over 4000 host populations. Disease prevalence at the metapopulation level was low, with high annual pathogen extinction rates balanced by frequent (re-)colonizations. Highly connected host populations experienced less pathogen colonization and higher pathogen extinction rates than expected; a laboratory assay confirmed that this phenomenon was caused by higher levels of disease resistance in highly connected host populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jousimo, Jussi -- Tack, Ayco J M -- Ovaskainen, Otso -- Mononen, Tommi -- Susi, Hanna -- Tollenaere, Charlotte -- Laine, Anna-Liisa -- New York, N.Y. -- Science. 2014 Jun 13;344(6189):1289-93. doi: 10.1126/science.1253621.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Metapopulation Research Group, Department of Biosciences, University of Helsinki, Post Office Box 65 (Viikinkaari 1), FI-00014 University of Helsinki, Helsinki, Finland. ; Metapopulation Research Group, Department of Biosciences, University of Helsinki, Post Office Box 65 (Viikinkaari 1), FI-00014 University of Helsinki, Helsinki, Finland. Department of Biomedical Engineering and Computational Science, Aalto University School of Science, FI-00076 Aalto, Finland. ; Metapopulation Research Group, Department of Biosciences, University of Helsinki, Post Office Box 65 (Viikinkaari 1), FI-00014 University of Helsinki, Helsinki, Finland. anna-liisa.laine@helsinki.fi.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24926021" target="_blank"〉PubMed〈/a〉
Keywords:
Ascomycota/*pathogenicity
;
*Biological Evolution
;
*Ecological and Environmental Processes
;
Extinction, Biological
;
*Host-Pathogen Interactions
;
Plant Diseases/*microbiology
;
Plantago/*microbiology
;
Seasons
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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