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Citation for Study 20947

Citation title: "Complex patterns of intercontinental and isolated lineages in a common, cosmopolitan lichen-forming fungal component of biological soil crusts, Psora decipiens (Psoraceae, Ascomycota)".

Study name: "Complex patterns of intercontinental and isolated lineages in a common, cosmopolitan lichen-forming fungal component of biological soil crusts, Psora decipiens (Psoraceae, Ascomycota)".

This study is part of submission 20947 (Status: Published).

Citation

Leavitt S., Westberg M., Sohrabi M., Elix J., Timdal E., Nelsen M., St. clair L.L., Wedin M., & Lumbsch H.T. 2017. Complex patterns of intercontinental and isolated lineages in a common, cosmopolitan lichen-forming fungal component of biological soil crusts, Psora decipiens (Psoraceae, Ascomycota). Frontiers in Microbiology, .

Authors

• Leavitt S.
• Westberg M. +46-8-5195 4018
• Sohrabi M. 00358417241487
• Elix J.
• Timdal E.
• Nelsen M.
• St. clair L.L.
• Wedin M.
• Lumbsch H.T.

Abstract

Multiple drivers shape the spatial distribution of species, including dispersal capacity, niche incumbency, climate variability, orographic barriers, and plate tectonics. However, biogeographic patterns of microbes commonly do not fit conventional expectations based on studies of animals and plants. Microbes in general are known to occur across exceedingly broad, intercontinental distributions, including some important components of biological soil crust communities (BSCs). The lichen-forming fungal species Psora decipiens (Psoraceae, Lecanoromycetes) is found on all continents, except South America and Antarctica and occurs in BSCs across diverse habitats, ranging from hot, arid deserts to alpine steppe/tundra communities. In order to better understand the factors that shape population structure in cosmopolitan lichen-forming fungal species, we investigated biogeographic patterns in the cosmopolitan taxon Psora decipiens, along with the closely related taxa P. crenata and P. saviczii. We generated a multi-locus sequence data set based on a worldwide sampling of these taxa in order to reconstruct evolutionary relationships and explore phylogeographic patterns. Both P. crenata and P. decipiens were not recovered as monophyletic; and P. saviczii specimens were recovered as a monophyletic clade closely related to a number of lineages comprised of specimens representing P. decipiens. Striking phylogeographic patterns were observed for P. crenata, with populations from distinct geographic regions (e.g., western North America, South Africa, and the Middle East) belonging to well-separated, monophyletic lineages. South African populations of P. crenata were further divided into well-supported sub-clades. While well-supported phylogenetic substructure was also observed for P. decipiens, nearly all lineages were comprised of specimens collected from intercontinental populations. However, all Australian specimens representing P. decipiens were recovered within a single well-supported monophyletic clade consisting solely of Australian samples only. Our study supports up to ten candidate species-level lineages in P. decipiens, based on genealogical concordance and coalescent-based species delimitation analyses. We discuss biogeographic patterns and potential factors driving the spatial distribution of lineages within the P. crenata and P. decipiens groups. Our study has important implications for understanding factors influencing diversification and distributions of lichens associated with BSC.

Keywords

Australia, biogeography, BSC, disjunct populations, long-distance dispersal, semi-arid, South Africa

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S20947
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref27162,
  	 author = {Steven   Leavitt and Martin  Westberg and Mohammad  Sohrabi and John E.  Elix and Einar  Timdal and Matthew P.  Nelsen and Larry L. St. Clair and Mats  Wedin and H. Thorsten Lumbsch},
  	 title = {Complex patterns of intercontinental and isolated lineages in a common, cosmopolitan lichen-forming fungal component of biological soil crusts, Psora decipiens (Psoraceae, Ascomycota)},
  	 year = {2017},
  	 keywords = {Australia, biogeography, BSC, disjunct populations, long-distance dispersal, semi-arid, South Africa},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Frontiers in Microbiology},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Multiple drivers shape the spatial distribution of species, including dispersal capacity, niche incumbency, climate variability, orographic barriers, and plate tectonics. However, biogeographic patterns of microbes commonly do not fit conventional expectations based on studies of animals and plants. Microbes in general are known to occur across exceedingly broad, intercontinental distributions, including some important components of biological soil crust communities (BSCs). The lichen-forming fungal species Psora decipiens (Psoraceae, Lecanoromycetes) is found on all continents, except South America and Antarctica and occurs in BSCs across diverse habitats, ranging from hot, arid deserts to alpine steppe/tundra communities. In order to better understand the factors that shape population structure in cosmopolitan lichen-forming fungal species, we investigated biogeographic patterns in the cosmopolitan taxon Psora decipiens, along with the closely related taxa P. crenata and P. saviczii. We generated a multi-locus sequence data set based on a worldwide sampling of these taxa in order to reconstruct evolutionary relationships and explore phylogeographic patterns. Both P. crenata and P. decipiens were not recovered as monophyletic; and P. saviczii specimens were recovered as a monophyletic clade closely related to a number of lineages comprised of specimens representing P. decipiens. Striking phylogeographic patterns were observed for P. crenata, with populations from distinct geographic regions (e.g., western North America, South Africa, and the Middle East) belonging to well-separated, monophyletic lineages. South African populations of P. crenata were further divided into well-supported sub-clades. While well-supported phylogenetic substructure was also observed for P. decipiens, nearly all lineages were comprised of specimens collected from intercontinental populations. However, all Australian specimens representing P. decipiens were recovered within a single well-supported monophyletic clade consisting solely of Australian samples only. Our study supports up to ten candidate species-level lineages in P. decipiens, based on genealogical concordance and coalescent-based species delimitation analyses. We discuss biogeographic patterns and potential factors driving the spatial distribution of lineages within the P. crenata and P. decipiens groups. Our study has important implications for understanding factors influencing diversification and distributions of lichens associated with BSC.
  }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 27162
  AU  - Leavitt,Steven  
  AU  - Westberg,Martin 
  AU  - Sohrabi,Mohammad 
  AU  - Elix,John E. 
  AU  - Timdal,Einar 
  AU  - Nelsen,Matthew P. 
  AU  - St. Clair,Larry L.
  AU  - Wedin,Mats 
  AU  - Lumbsch,H. Thorsten
  T1  - Complex patterns of intercontinental and isolated lineages in a common, cosmopolitan lichen-forming fungal component of biological soil crusts, Psora decipiens (Psoraceae, Ascomycota)
  PY  - 2017
  KW  - Australia
  KW  - biogeography
  KW  - BSC
  KW  - disjunct populations
  KW  - long-distance dispersal
  KW  - semi-arid
  KW  - South Africa
  UR  - http://dx.doi.org/
  N2  - Multiple drivers shape the spatial distribution of species, including dispersal capacity, niche incumbency, climate variability, orographic barriers, and plate tectonics. However, biogeographic patterns of microbes commonly do not fit conventional expectations based on studies of animals and plants. Microbes in general are known to occur across exceedingly broad, intercontinental distributions, including some important components of biological soil crust communities (BSCs). The lichen-forming fungal species Psora decipiens (Psoraceae, Lecanoromycetes) is found on all continents, except South America and Antarctica and occurs in BSCs across diverse habitats, ranging from hot, arid deserts to alpine steppe/tundra communities. In order to better understand the factors that shape population structure in cosmopolitan lichen-forming fungal species, we investigated biogeographic patterns in the cosmopolitan taxon Psora decipiens, along with the closely related taxa P. crenata and P. saviczii. We generated a multi-locus sequence data set based on a worldwide sampling of these taxa in order to reconstruct evolutionary relationships and explore phylogeographic patterns. Both P. crenata and P. decipiens were not recovered as monophyletic; and P. saviczii specimens were recovered as a monophyletic clade closely related to a number of lineages comprised of specimens representing P. decipiens. Striking phylogeographic patterns were observed for P. crenata, with populations from distinct geographic regions (e.g., western North America, South Africa, and the Middle East) belonging to well-separated, monophyletic lineages. South African populations of P. crenata were further divided into well-supported sub-clades. While well-supported phylogenetic substructure was also observed for P. decipiens, nearly all lineages were comprised of specimens collected from intercontinental populations. However, all Australian specimens representing P. decipiens were recovered within a single well-supported monophyletic clade consisting solely of Australian samples only. Our study supports up to ten candidate species-level lineages in P. decipiens, based on genealogical concordance and coalescent-based species delimitation analyses. We discuss biogeographic patterns and potential factors driving the spatial distribution of lineages within the P. crenata and P. decipiens groups. Our study has important implications for understanding factors influencing diversification and distributions of lichens associated with BSC.
  
  L3  - 
  JF  - Frontiers in Microbiology
  VL  - 
  IS  - 
  ER  -