Data from: Sympatric diversification vs. immigration: deciphering host-plant specialization in a polyphagous insect, the stolbur phytoplasma vector Hyalesthes obsoletus (Cixiidae)
Imo, Miriam, Johannes Gutenberg University of Mainz
Maixner, Michael, Julius Kühn-Institut
Johannesen, Jes, Johannes Gutenberg University of Mainz
Published Jan 07, 2013 on Dryad.
Cite this dataset
Imo, Miriam; Maixner, Michael; Johannesen, Jes (2013). Data from: Sympatric diversification vs. immigration: deciphering host-plant specialization in a polyphagous insect, the stolbur phytoplasma vector Hyalesthes obsoletus (Cixiidae) [Dataset]. Dryad. https://doi.org/10.5061/dryad.8339m
The epidemiology of vector transmitted plant diseases is highly influenced by dispersal and the host-plant range of the vector. Widening the vector's host range may increase transmission potential, whereas specialization may induce specific disease cycles. The process leading to a vector's host shift and its epidemiological outcome is therefore embedded in the frameworks of sympatric evolution vs. immigration of preadapted populations. In this study, we analyse whether a host shift of the stolbur phytoplasma vector, Hyalesthes obsoletus from field bindweed to stinging nettle in its northern distribution range evolved sympatrically or by immigration. The exploitation of stinging nettle has led to outbreaks of the grapevine disease bois noir caused by a stinging nettle-specific phytoplasma strain. Microsatellite data from populations from northern and ancestral ranges provide strong evidence for sympatric host-race evolution in the northern range: Host-plant associated populations were significantly differentiated among syntopic sites (0.054 < FHT < 0.098) and constant over 5 years. While gene flow was asymmetric from the old into the predicted new host race, which had significantly reduced genetic diversity, the genetic identity between syntopic host-race populations in the northern range was higher than between these populations and syntopic populations in ancestral ranges, where there was no evidence for genetic host races. Although immigration was detected in the northern field bindweed population, it cannot explain host-race diversification but suggests the introduction of a stinging nettle-specific phytoplasma strain by plant-unspecific vectors. The evolution of host races in the northern range has led to specific vector-based bois noir disease cycles.
Structure data file. C. arvensis- and U. dioica-associated populations of H. obsoletus sampled over five consecutive years (2005-2009) at the syntopic site Bacharach, Germany
Structure data file for level 2 analysis. C. arvensis- and U. dioica-associated populations of H. obsoletus from Germany.
Structure data file for level-3 analyis. C. arvensis- and U. dioica-associated populations of H. obsoletus from Italy and Slovenia
Structure data file for level-4 analyis. All non-German C. arvensis- and U. dioica-associated populations of H. obsoletus
Structure data file for level-5 analyis. Syntopic C. arvensis- and U. dioica-associated populations of H. obsoletus from Germany, Switzerland, Italy, and Slovenia and one C. arvensis population from France
Structure data file for level-6 analyis. All available populations, including samples collected from all host plants Convolvulus arvensis; Urtica dioica; Lavandula angustifolia; Solanum tuberosum; Vitex agnus-castus
Arlequin input file containing all 42 population samples of H. obsoletus. A population sample is defined as a sample of H. obsoletus collected from one site on one plant in one specific year. Please refer to table 2 for sample name abreviations