Article (Scientific journals)
Oligocene origin and drivers of diversification in the genus Sticta (Lobariaceae, Ascomycota)
Widhelm, Todd J.; Bertolettiq, Francesca R.; Asztalos, Matt J. et al.
2018In Molecular Phylogenetics and Evolution, 126, p. 58-73
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Abstract :
[en] A major challenge to evolutionary biologists is to understand how biodiversity is distributed through space and time and across the tree of life. Diversification of organisms is influenced by many factors that act at different times and geographic locations but it is still not clear which have a significant impact and how drivers interact. To study diversification, we chose the lichen genus Sticta, by sampling through most of the global range and producing a time tree. We estimate that Sticta originated about 30 million years ago, but biogoegraphic analysis was unclear in estimating the origin of the genus. Furthermore, we investigated the effect of dispersal ability finding that Sticta has a high dispersal rate, as collections from Hawaii showed that divergent lineages colonized the islands at least four times. Symbiont interactions were investigated using BiSSE to understand if green-algal or cyanobacterial symbiont interactions influenced diversification, only to find that the positive results were driven almost completely by Type I error. On the other hand, another BiSSE analysis found that an association with Andean tectonic activity increases the speciation rate of species.
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Widhelm, Todd J.;  The Field Museum
Bertolettiq, Francesca R.;  Depaul University
Asztalos, Matt J.;  Depaul University
Mercado-Diaz, Joel A.;  The Field Museum
Huang, Jen-Pan;  The Field Museum
Moncada, Bibiana;  Universidad Distrital Francisco José de Caldas
Lücking, Robert;  Botanischer Garten und Botanisches Museum, Berlin
Magain, Nicolas  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Biologie de l'évolution et de la conservation - aCREA-Ulg
Sérusiaux, Emmanuël ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Biologie de l'évolution et de la conservation - aCREA-Ulg
Crouch, Nicholas;  University of Illinois at Chicago
Mason-Gamer, Roberta;  University of Illinois at Chicago
Lumbsch, H. Thorsten;  The Field Museum
Language :
English
Title :
Oligocene origin and drivers of diversification in the genus Sticta (Lobariaceae, Ascomycota)
Publication date :
September 2018
Journal title :
Molecular Phylogenetics and Evolution
ISSN :
1055-7903
eISSN :
1095-9513
Publisher :
Elsevier, Atlanta, United States - California
Volume :
126
Pages :
58-73
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 September 2018

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