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Biosystematic Studies on the Status of Solanum chilense (Dunal) Reiche

Andrew R. Raduski, Boris Igić
doi: https://doi.org/10.1101/2020.06.14.151423
Andrew R. Raduski
1Dept. of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, U.S.A
2Dept. of Plant & Microbial Biology, University of Minnesota - Twin Cities, St. Paul, MN 55108
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Boris Igić
1Dept. of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, U.S.A
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  • For correspondence: boris@uic.edu
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Abstract

  • Members of Solanum sect. Lycopersicum are commonly used as a source of exotic germplasm for improvement of the cultivated tomato, and are increasingly employed in basic research. Although it experienced significant early and ongoing work, the taxonomic status of many wild species in this section has undergone a number of significant revisions, and remains uncertain.

  • Here, we examine the taxonomic status of obligately outcrossing Chilean wild tomato (Solanum chilense) using reduced-representation sequencing (RAD-seq), a range of phylogenetic and population genetic analyses, crossing data, and morphological data.

  • Overall, each of our analyses provides some weight of evidence that the Pacific coastal populations and Andean inland populations of the currently described S. chilense represent separately evolving populations.

  • Despite its vast economic importance, Solanum sect. Lycopersicon still exhibits considerable taxonomic instability. A pattern of under-recognition of outcrossing species may be common across flowering plants. We discuss the possible causes and implications of this observation, with a focus on macroevolutionary inference.

Competing Interest Statement

The authors have declared no competing interest.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted June 15, 2020.
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Biosystematic Studies on the Status of Solanum chilense (Dunal) Reiche
Andrew R. Raduski, Boris Igić
bioRxiv 2020.06.14.151423; doi: https://doi.org/10.1101/2020.06.14.151423
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Biosystematic Studies on the Status of Solanum chilense (Dunal) Reiche
Andrew R. Raduski, Boris Igić
bioRxiv 2020.06.14.151423; doi: https://doi.org/10.1101/2020.06.14.151423

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