Schmidt, Alexander R.

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Rikkinen, Jouko"],["dc.contributor.author","Grimaldi, David A."],["dc.contributor.author","Schmidt, Alexander R."],["dc.date.accessioned","2020-12-10T18:11:11Z"],["dc.date.available","2020-12-10T18:11:11Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1038/s41598-019-55622-9"],["dc.identifier.eissn","2045-2322"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17051"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73914"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Morphological stasis in the first myxomycete from the Mesozoic, and the likely role of cryptobiosis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0129526"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.lastpage","12"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Kaasalainen, Ulla"],["dc.contributor.author","Heinrichs, Jochen"],["dc.contributor.author","Krings, Michael"],["dc.contributor.author","Myllys, Leena"],["dc.contributor.author","Grabenhorst, Heinrich"],["dc.contributor.author","Rikkinen, Jouko"],["dc.contributor.author","Schmidt, Alexander R."],["dc.date.accessioned","2018-11-07T09:55:56Z"],["dc.date.available","2018-11-07T09:55:56Z"],["dc.date.issued","2015"],["dc.description.abstract","One of the most important issues in molecular dating studies concerns the incorporation of reliable fossil taxa into the phylogenies reconstructed from DNA sequence variation in extant taxa. Lichens are symbiotic associations between fungi and algae and/or cyanobacteria. Several lichen fossils have been used as minimum age constraints in recent studies concerning the diversification of the Ascomycota. Recent evolutionary studies of Lecanoromycetes, an almost exclusively lichen-forming class in the Ascomycota, have utilized the Eocene amber inclusion Alectoria succinic as a minimum age constraint. However, a re-investigation of the type material revealed that this inclusion in fact represents poorly preserved plant remains, most probably of a root. Consequently, this fossil cannot be used as evidence of the presence of the genus Alectoria (Parmeliaceae, Lecanorales) or any other lichens in the Paleogene. However, newly discovered inclusions from Paleogene Baltic and Bitterfeld amber verify that alectorioid morphologies in lichens were in existence by the Paleogene. The new fossils represent either a lineage within the alectorioid group or belong to the genus Oropogon."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2015"],["dc.identifier.doi","10.1371/journal.pone.0129526"],["dc.identifier.isi","000355955300138"],["dc.identifier.pmid","26053106"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11959"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/36860"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","Najko"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Alectorioid Morphologies in Paleogene Lichens: New Evidence and Re-Evaluation of the Fossil Alectoria succini Magdefrau"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","10360"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Kaasalainen, Ulla"],["dc.contributor.author","Kukwa, Martin"],["dc.contributor.author","Rikkinen, Jouko"],["dc.contributor.author","Schmidt, Alexander R."],["dc.date.accessioned","2019-07-22T10:02:45Z"],["dc.date.available","2019-07-22T10:02:45Z"],["dc.date.issued","2019"],["dc.description.abstract","Lichens, symbiotic consortia of lichen-forming fungi and their photosynthetic partners have long had an extremely poor fossil record. However, recently over 150 new lichens were identified from European Paleogene amber and here we analyse crustose lichens from the new material. Three fossil lichens belong to the extant genus Ochrolechia (Ochrolechiaceae, Lecanoromycetes) and one fossil has conidiomata similar to those produced by modern fungi of the order Arthoniales (Arthoniomycetes). Intriguingly, two fossil Ochrolechia specimens host lichenicolous fungi of the genus Lichenostigma (Lichenostigmatales, Arthoniomycetes). This confirms that both Ochrolechia and Lichenostigma already diversified in the Paleogene and demonstrates that also the specific association between the fungi had evolved by then. The new fossils provide a minimum age constraint for both genera at 34 million years (uppermost Eocene)."],["dc.identifier.doi","10.1038/s41598-019-46692-w"],["dc.identifier.pmid","31316089"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16287"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61781"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","2045-2322"],["dc.relation.issn","2045-2322"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Crustose lichens with lichenicolous fungi from Paleogene amber"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","127"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","FOSSIL RECORD"],["dc.bibliographiccitation.lastpage","135"],["dc.bibliographiccitation.volume","18"],["dc.contributor.author","Hartl, C."],["dc.contributor.author","Schmidt, A. R."],["dc.contributor.author","Heinrichs, Jochen"],["dc.contributor.author","Seyfullah, Leyla J."],["dc.contributor.author","Schaefer, N."],["dc.contributor.author","Groehn, Carsten"],["dc.contributor.author","Rikkinen, Jouko"],["dc.contributor.author","Kaasalainen, Ulla"],["dc.date.accessioned","2018-11-07T10:02:30Z"],["dc.date.available","2018-11-07T10:02:30Z"],["dc.date.issued","2015"],["dc.description.abstract","The fossil record of lichens is scarce and many putative fossil lichens do not show an actual physiological relationship between mycobionts and photobionts or a typical habit, and are therefore disputed. Amber has preserved a huge variety of organisms in microscopic fidelity, and so the study of amber fossils is promising for elucidating the fossil history of lichens. However, so far it has not been tested as to how amber inclusions of lichens are preserved regarding their internal characters, ultrastructure, and chemofossils. Here, we apply light microscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and Raman spectroscopy to an amber-preserved Eocene lichen in order to gain information about the preservation of the fossil. The lichen thallus displays lifelike tissue preservation including the upper and lower cortex, medulla, photobiont layer, apothecia, and soredia. SEM analysis revealed globular photobiont cells in contact with the fungal hyphae, as well as impressions of possible former crystals of lichen compounds. EDX analysis permitted the differentiation between halite and pyrite crystals inside the lichen which were likely formed during the later diagenesis of the amber piece. Raman spectroscopy revealed the preservation of organic compounds and a difference between the composition of the cortex and the medulla of the fossil."],["dc.description.sponsorship","Alexander von Humboldt Foundation"],["dc.identifier.doi","10.5194/fr-18-127-2015"],["dc.identifier.isi","000371181900004"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12566"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38236"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Copernicus Gesellschaft Mbh"],["dc.relation.issn","2193-0074"],["dc.relation.issn","2193-0066"],["dc.rights","CC BY 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/3.0/"],["dc.title","Lichen preservation in amber: morphology, ultrastructure, chemofossils, and taphonomic alteration"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1176"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","New Phytologist"],["dc.bibliographiccitation.lastpage","1182"],["dc.bibliographiccitation.volume","228"],["dc.contributor.author","Schmidt, Alexander R."],["dc.contributor.author","Regalado, Ledis"],["dc.contributor.author","Weststrand, Stina"],["dc.contributor.author","Korall, Petra"],["dc.contributor.author","Sadowski, Eva‐Maria"],["dc.contributor.author","Schneider, Harald"],["dc.contributor.author","Jansen, Eva"],["dc.contributor.author","Bechteler, Julia"],["dc.contributor.author","Krings, Michael"],["dc.contributor.author","Müller, Patrick"],["dc.contributor.author","Wang, Bo"],["dc.contributor.author","Wang, Xin"],["dc.contributor.author","Rikkinen, Jouko"],["dc.contributor.author","Seyfullah, Leyla J."],["dc.date.accessioned","2021-04-14T08:25:23Z"],["dc.date.available","2021-04-14T08:25:23Z"],["dc.date.issued","2020"],["dc.description.sponsorship","Strategic Priority Research Program of the Chinese Academy of Sciences"],["dc.description.sponsorship","National Natural Science Foundation of China http://dx.doi.org/10.13039/501100001809"],["dc.identifier.doi","10.1111/nph.16600"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81614"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1469-8137"],["dc.relation.issn","0028-646X"],["dc.title","Selaginella was hyperdiverse already in the Cretaceous"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","199"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Fungal Diversity"],["dc.bibliographiccitation.lastpage","213"],["dc.bibliographiccitation.volume","58"],["dc.contributor.author","Tuovila, Hanna"],["dc.contributor.author","Schmidt, Alexander R."],["dc.contributor.author","Beimforde, Christina"],["dc.contributor.author","Dörfelt, Heinrich"],["dc.contributor.author","Grabenhorst, Heinrich"],["dc.contributor.author","Rikkinen, Jouko"],["dc.date.accessioned","2018-11-07T09:30:39Z"],["dc.date.available","2018-11-07T09:30:39Z"],["dc.date.issued","2013"],["dc.description.abstract","Resin protects wounded trees from microbial infection, but also provides a suitable substrate for the growth of highly specialized fungi. Chaenothecopsis proliferatus is described growing on resin of Cunninghamia lanceolata from Hunan Province, China. The new fungus is compared with extant species and two new fossil specimens from Eocene Baltic and Oligocene Bitterfeld ambers. The Oligocene fossil had produced proliferating ascomata identical to those of the newly described species and to other extant species of the same lineage. This morphology may represent an adaptation to growing near active resin flows: the proliferating ascomata can effectively rejuvenate if partially overrun by fresh, sticky exudate. Inward growth of fungal hyphae into resin has only been documented from Cenozoic amber fossils suggesting comparatively late occupation of resin as substrate by fungi. Still, resinicolous Chaenothecopsis species were already well adapted to their special ecological niche by the Eocene, and the morphology of these fungi has since remained remarkably constant."],["dc.identifier.doi","10.1007/s13225-012-0210-9"],["dc.identifier.isi","000313366900013"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8891"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31356"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","Najko"],["dc.relation.issn","1560-2745"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Stuck in time - a new Chaenothecopsis species with proliferating ascomata from Cunninghamia resin and its fossil ancestors in European amber"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","386"],["dc.bibliographiccitation.journal","Molecular Phylogenetics and Evolution"],["dc.bibliographiccitation.lastpage","398"],["dc.bibliographiccitation.volume","78"],["dc.contributor.author","Beimforde, Christina"],["dc.contributor.author","Feldberg, Kathrin"],["dc.contributor.author","Nylinder, Stephan"],["dc.contributor.author","Rikkinen, Jouko"],["dc.contributor.author","Tuovila, Hanna"],["dc.contributor.author","Dörfelt, Heinrich"],["dc.contributor.author","Gube, Matthias"],["dc.contributor.author","Jackson, Daniel J."],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Seyfullah, Leyla J."],["dc.contributor.author","Schmidt, Alexander R."],["dc.date.accessioned","2018-11-07T09:35:47Z"],["dc.date.available","2018-11-07T09:35:47Z"],["dc.date.issued","2014"],["dc.description.abstract","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."],["dc.description.sponsorship","German Excellence Initiative"],["dc.identifier.doi","10.1016/j.ympev.2014.04.024"],["dc.identifier.isi","000342480400034"],["dc.identifier.pmid","24792086"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11370"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32467"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","Najko"],["dc.relation.issn","1095-9513"],["dc.relation.issn","1055-7903"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","CC BY-NC-ND 3.0"],["dc.rights.uri","http://creativecommons.org/licenses/by-nc-nd/3.0/"],["dc.title","Estimating the Phanerozoic history of the Ascomycota lineages: Combining fossil and molecular data"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]