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Citation for Study 19048

Citation title: "Cryptic diversity and symbiont interactions in rock-posy lichens".

Study name: "Cryptic diversity and symbiont interactions in rock-posy lichens".

This study is part of submission 19048 (Status: Published).

Citation

Leavitt S., Kraichak E., Vondrak J., Nelsen M., Sohrabi M., Perez-ortega S., St. clair L.L., & Lumbsch H.T. 2016. Cryptic diversity and symbiont interactions in rock-posy lichens. Molecular Phylogenetics and Evolution, .

Authors

• Leavitt S. (submitter)
• Kraichak E.
• Vondrak J.
• Nelsen M.
• Sohrabi M. 00358417241487
• Perez-ortega S.
• St. clair L.L.
• Lumbsch H.T.

Abstract

Identifying factors that influence species interactions is central to research in symbiotic systems. While lichens represent iconic models of symbiosis and play important roles in understanding the biology of symbiotic interactions, patterns of interactions in lichen symbionts and mechanisms governing these relationships are not well characterized. This is due, in part to the fact that current taxonomic approaches for recognizing diversity in lichen symbionts commonly fail to accurately reflect actual species diversity. In this study, we employed DNA-based approaches to circumscribed candidate species-level lineages in rock-posy lichen symbionts (mycobiont = Rhizoplaca species; photobiont = Trebouxia species). Our results revealed a high degree of cryptic diversity in both the myco- and photobionts in these lichens. Using the candidate species circumscribed here, we investigated the specificity of the symbionts toward their partners and inferred the relative importance of various factors influencing symbiont interactions. Distinct mycobiont species complexes, ecozones, and biomes are significantly correlated with the occurrence of photobiont OTUs, indicating that complex interactions among mycobiont lineages, ecogeography, and microhabitat determine interactions between photobionts and their mycobionts in lichen symbiosis. One-to-one specificity between mycobiont and photobiont species was not found, with the exception of R. maheui that associated with a single Trebouxia OTU that was not found with other Rhizoplaca species. We estimated the most recent common ancestor of the core Rhizoplaca group at c. 62.5 Ma, similar in age to the diverse parmelioid core group in Parmeliaceae. However, in contrast to Parmeliaceae, species in Rhizoplaca were found to associate with a narrow range of photobionts. Our study provides important perspectives into species diversity and interactions in iconic lichen symbiotic systems and establishes a valuable framework for continuing research into rock-posy lichens.

Keywords

ecoregion; Lecanoraceae; selectivity; specificity; symbiosis; Trebouxia

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S19048
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref25690,
  	 author = {Steve  Leavitt and Ekaphan  Kraichak and Jan  Vondrak and Matthew  Nelsen and Mohammad  Sohrabi and Sergio  Perez-Ortega and Larry L. St. Clair and H. Thorsten Lumbsch},
  	 title = {Cryptic diversity and symbiont interactions in rock-posy lichens},
  	 year = {2016},
  	 keywords = {ecoregion; Lecanoraceae; selectivity; specificity; symbiosis; Trebouxia},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Molecular Phylogenetics and Evolution},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Identifying factors that influence species interactions is central to research in symbiotic systems. While lichens represent iconic models of symbiosis and play important roles in understanding the biology of symbiotic interactions, patterns of interactions in lichen symbionts and mechanisms governing these relationships are not well characterized. This is due, in part to the fact that current taxonomic approaches for recognizing diversity in lichen symbionts commonly fail to accurately reflect actual species diversity. In this study, we employed DNA-based approaches to circumscribed candidate species-level lineages in rock-posy lichen symbionts (mycobiont = Rhizoplaca species; photobiont = Trebouxia species). Our results revealed a high degree of cryptic diversity in both the myco- and photobionts in these lichens. Using the candidate species circumscribed here, we investigated the specificity of the symbionts toward their partners and inferred the relative importance of various factors influencing symbiont interactions. Distinct mycobiont species complexes, ecozones, and biomes are significantly correlated with the occurrence of photobiont OTUs, indicating that complex interactions among mycobiont lineages, ecogeography, and microhabitat determine interactions between photobionts and their mycobionts in lichen symbiosis. One-to-one specificity between mycobiont and photobiont species was not found, with the exception of R. maheui that associated with a single Trebouxia OTU that was not found with other Rhizoplaca species. We estimated the most recent common ancestor of the core Rhizoplaca group at c. 62.5 Ma, similar in age to the diverse parmelioid core group in Parmeliaceae. However, in contrast to Parmeliaceae, species in Rhizoplaca were found to associate with a narrow range of photobionts. Our study provides important perspectives into species diversity and interactions in iconic lichen symbiotic systems and establishes a valuable framework for continuing research into rock-posy lichens.    }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 25690
  AU  - Leavitt,Steve 
  AU  - Kraichak,Ekaphan 
  AU  - Vondrak,Jan 
  AU  - Nelsen,Matthew 
  AU  - Sohrabi,Mohammad 
  AU  - Perez-Ortega,Sergio 
  AU  - St. Clair,Larry L.
  AU  - Lumbsch,H. Thorsten
  T1  - Cryptic diversity and symbiont interactions in rock-posy lichens
  PY  - 2016
  KW  - ecoregion; Lecanoraceae; selectivity; specificity; symbiosis; Trebouxia
  UR  - http://dx.doi.org/
  N2  - Identifying factors that influence species interactions is central to research in symbiotic systems. While lichens represent iconic models of symbiosis and play important roles in understanding the biology of symbiotic interactions, patterns of interactions in lichen symbionts and mechanisms governing these relationships are not well characterized. This is due, in part to the fact that current taxonomic approaches for recognizing diversity in lichen symbionts commonly fail to accurately reflect actual species diversity. In this study, we employed DNA-based approaches to circumscribed candidate species-level lineages in rock-posy lichen symbionts (mycobiont = Rhizoplaca species; photobiont = Trebouxia species). Our results revealed a high degree of cryptic diversity in both the myco- and photobionts in these lichens. Using the candidate species circumscribed here, we investigated the specificity of the symbionts toward their partners and inferred the relative importance of various factors influencing symbiont interactions. Distinct mycobiont species complexes, ecozones, and biomes are significantly correlated with the occurrence of photobiont OTUs, indicating that complex interactions among mycobiont lineages, ecogeography, and microhabitat determine interactions between photobionts and their mycobionts in lichen symbiosis. One-to-one specificity between mycobiont and photobiont species was not found, with the exception of R. maheui that associated with a single Trebouxia OTU that was not found with other Rhizoplaca species. We estimated the most recent common ancestor of the core Rhizoplaca group at c. 62.5 Ma, similar in age to the diverse parmelioid core group in Parmeliaceae. However, in contrast to Parmeliaceae, species in Rhizoplaca were found to associate with a narrow range of photobionts. Our study provides important perspectives into species diversity and interactions in iconic lichen symbiotic systems and establishes a valuable framework for continuing research into rock-posy lichens.    
  L3  - 
  JF  - Molecular Phylogenetics and Evolution
  VL  - 
  IS  - 
  ER  -