Beimforde, Christina

Doerfelt, Heinrich

Feldberg, Kathrin

Gube, Matthias

Jackson, Daniel J.

Nylinder, Stephan

Reitner, Joachim

Rikkinen, Jouko

Schmidt, Alexander R.

Seyfullah, Leyla J.

Tuovila, Hanna

English

Helsingin yliopiston digitaalinen arkisto

Estimating the Phanerozoic history of the Ascomycota lineages : Combining fossil and molecular data

Christina Beimforde

Kathrin Feldberg

Stephan Nylinder

Jouko Rikkinen

Hanna Tuovila

Heinrich Dörfelt

Matthias Gube

Daniel J. Jackson

Joachim Reitner

Leyla J. Seyfullah

Alexander R. Schmidt

Crossref

Molecular Phylogenetics and Evolution

Estimating the Phanerozoic history of the Ascomycota lineages: Combining fossil and molecular data

The phylum Ascomycota is by far the largest group in the fungal kingdom. Ecologically important mutualisticassociations such as mycorrhizae and lichens have evolved in this group, which are regarded as keyinnovations that supported the evolution of land plants. Only a few attempts have been made to date theorigin of Ascomycota lineages by using molecular clock methods, which is primarily due to the lack ofsatisfactory fossil calibration data. For this reason we have evaluated all of the oldest available ascomycetefossils from amber (Albian to Miocene) and chert (Devonian and Maastrichtian). The fossils representfive major ascomycete classes (Coniocybomycetes, Dothideomycetes, Eurotiomycetes, Laboulbeniomycetes,and Lecanoromycetes). We have assembled a multi-gene data set (18SrDNA, 28SrDNA, RPB1 andRPB2) from a total of 145 taxa representing most groups of the Ascomycota and utilized fossil calibrationpoints solely from within the ascomycetes to estimate divergence times of Ascomycota lineages with aBayesian approach. Our results suggest an initial diversification of the Pezizomycotina in the Ordovician,followed by repeated splits of lineages throughout the Phanerozoic, and indicate that this continuousdiversification was unaffected by mass extinctions. We suggest that the ecological diversity within eachlineage ensured that at least some taxa of each group were able to survive global crises and rapidlyrecovered

Nylinder, Nylinder

Dörfelt, Heinrich

Jackson, Daniel

Seyfullah, Leyla

Schmidt, Alexander

Swedish Museum of Natural History

Digitala Vetenskapliga Arkivet - Academic Archive On-line

The phylum Ascomycota is by far the largest group in the fungal kingdom. Ecologically important mutualisticassociations such as mycorrhizae and lichens have evolved in this group, which are regarded as keyinnovations that supported the evolution of land plants. Only a few attempts have been made to date theorigin of Ascomycota lineages by using molecular clock methods, which is primarily due to the lack ofsatisfactory fossil calibration data. For this reason we have evaluated all of the oldest available ascomycetefossils from amber (Albian to Miocene) and chert (Devonian and Maastrichtian). The fossils representfive major ascomycete classes (Coniocybomycetes, Dothideomycetes, Eurotiomycetes, Laboulbeniomycetes,and Lecanoromycetes). We have assembled a multi-gene data set (18SrDNA, 28SrDNA, RPB1 andRPB2) from a total of 145 taxa representing most groups of the Ascomycota and utilized fossil calibrationpoints solely from within the ascomycetes to estimate divergence times of Ascomycota lineages with aBayesian approach. Our results suggest an initial diversification of the Pezizomycotina in the Ordovician,followed by repeated splits of lineages throughout the Phanerozoic, and indicate that this continuousdiversification was unaffected by mass extinctions. We suggest that the ecological diversity within eachlineage ensured that at least some taxa of each group were able to survive global crises and rapidlyrecovered.</p

Beimforde, Christina,

Feldberg, Kathrin,

Nylinder, Nylinder,

Rikkinen, Jouko,

Tuovila, Hanna,

Dörfelt, Heinrich,

Gube, Matthias,

Jackson, Daniel,

Reitner, Joachim,

Seyfullah, Leyla,

Schmidt, Alexander,

Swepub

Estimating the Phanerozoic history of the Ascomycota lineages: Combining fossil and molecular data [Elektronisk resurs]

GEO-LEOe-docs

Estimating the Phanerozoic history of the Ascomycota lineages: combining fossil and molecular data.

GEO-LEO e-docs

The phylum Ascomycota is by far the largest group in the fungal kingdom. Ecologically important mutualistic associations such as mycorrhizae and lichens have evolved in this group, which are regarded as key innovations that supported the evolution of land plants. Only a few attempts have been made to date the origin of Ascomycota lineages by using molecular clock methods, which is primarily due to the lack of satisfactory fossil calibration data. For this reason we have evaluated all of the oldest available ascomycete fossils from amber (Albian to Miocene) and chert (Devonian and Maastrichtian). The fossils represent five major ascomycete classes (Coniocybomycetes, Dothideomycetes, Eurotiomycetes, Laboulbeniomycetes, and Lecanoromycetes). We have assembled a multi-gene data set (18SrDNA, 28SrDNA, RPB1 and RPB2) from a total of 145 taxa representing most groups of the Ascomycota and utilized fossil calibration points solely from within the ascomycetes to estimate divergence times of Ascomycota lineages with a Bayesian approach. Our results suggest an initial diversification of the Pezizomycotina in the Ordovician, followed by repeated splits of lineages throughout the Phanerozoic, and indicate that this continuous diversification was unaffected by mass extinctions. We suggest that the ecological diversity within each lineage ensured that at least some taxa of each group were able to survive global crises and rapidly recovered. (C) 2014 The Authors. Published by Elsevier Inc.German Excellence Initiativ

GRO.publications (Univ. Göttingen)

https://helda.helsinki.fi/bitstream/10138/224253/1/1_s2.0_S1055790314001523_main.pdf

Estimating the Phanerozoic history of the Ascomycota lineages : Combining fossil and molecular data

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