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Citation for Study 11058

Citation title: "Temporal isolation explains host-related genetic differentiation in a group of widespread mycoparasitic fungi".

Study name: "Temporal isolation explains host-related genetic differentiation in a group of widespread mycoparasitic fungi".

This study is part of submission 11048 (Status: Published).

Citation

Kiss L., Pintye A., Kov?cs G., Jankovics T., Fontaine M.C., Harvey N., Xu X., Nicot P.C., Bardin M., Shykoff J.A., & Giraud T. 2011. Temporal isolation explains host-related genetic differentiation in a group of widespread mycoparasitic fungi. Molecular Ecology, 20(7): 1492-1507.

Authors

• Kiss L.
• Pintye A.
• Kov?cs G.
• Jankovics T.
• Fontaine M.C.
• Harvey N.
• Xu X.
• Nicot P.C.
• Bardin M.
• Shykoff J.A.
• Giraud T.

Abstract

Understanding the mechanisms responsible for divergence and specialization of pathogens on different hosts is of fundamental importance, especially in the context of the emergence of new diseases via host shifts. Temporal isolation has been reported in a few plants and parasites but is probably one of the least studied speciation processes. We studied whether temporal isolation could be responsible for the maintenance of genetic differentiation among sympatric populations of Ampelomyces, widespread intracellular mycoparasites of powdery mildew fungi, themselves plant pathogens. The timing of transmission of Ampelomyces depends on the life cycles of the powdery mildew species they parasitize. ITS sequences and microsatellite markers showed that Ampelomyces populations found in apple powdery mildew (Podosphaera leucotricha) were genetically highly differentiated from other Ampelomyces populations sampled from several other powdery mildew species across Europe, infecting plant hosts other than apple. While P. leucotricha starts its life cycle early in spring, and the main apple powdery mildew epidemics occur before summer, the fungal hosts of the other Ampelomyces cause epidemics mainly in summer and autumn. When two powdery mildew species were experimentally exposed to Ampelomyces strains naturally occurring in P. leucotricha in spring, and to strains naturally present in other mycohost species in autumn, cross-infections always occurred. Thus, the host-related genetic differentiation in Ampelomyces cannot be explained by narrow physiological specialization, because Ampelomyces were able to infect powdery mildew species they were unlikely to have encountered in nature, but instead appears to result from temporal isolation.

Keywords

biotrophic pathogens; isolation in time; speciation; tri-trophic interactions

External links

• DOI: 10.1111/j.1365-294X.2011.05007.x
• PMID: 212617
• Other URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2011.05007.x/full

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S11058
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref19358,
  	 author = {Levente  Kiss and Alexandra  Pintye and G?bor M.  Kov?cs and T?nde  Jankovics and Michael C. Fontaine and Nick  Harvey and Xiangming  Xu and Philippe C. Nicot and Marc  Bardin and Jacqui A. Shykoff and Tatiana  Giraud},
  	 title = {Temporal isolation explains host-related genetic differentiation in a group of widespread mycoparasitic fungi},
  	 year = {2011},
  	 keywords = {biotrophic pathogens; isolation in time; speciation; tri-trophic interactions},
  	 doi = {10.1111/j.1365-294X.2011.05007.x},
  	 url = {http://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2011.05007.x/full},
  	 pmid = {212617},
  	 journal = {Molecular Ecology},
  	 volume = {20},
  	 number = {7},
  	 pages = {1492--1507},
  	 abstract = {Understanding the mechanisms responsible for divergence and specialization of pathogens on different hosts is of fundamental importance, especially in the context of the emergence of new diseases via host shifts. Temporal isolation has been reported in a few plants and parasites but is probably one of the least studied speciation processes. We studied whether temporal isolation could be responsible for the maintenance of genetic differentiation among sympatric populations of Ampelomyces, widespread intracellular mycoparasites of powdery mildew fungi, themselves plant pathogens. The timing of transmission of Ampelomyces depends on the life cycles of the powdery mildew species they parasitize. ITS sequences and microsatellite markers showed that Ampelomyces populations found in apple powdery mildew (Podosphaera leucotricha) were genetically highly differentiated from other Ampelomyces populations sampled from several other powdery mildew species across Europe, infecting plant hosts other than apple. While P. leucotricha starts its life cycle early in spring, and the main apple powdery mildew epidemics occur before summer, the fungal hosts of the other Ampelomyces cause epidemics mainly in summer and autumn. When two powdery mildew species were experimentally exposed to Ampelomyces strains naturally occurring in P. leucotricha in spring, and to strains naturally present in other mycohost species in autumn, cross-infections always occurred. Thus, the host-related genetic differentiation in Ampelomyces cannot be explained by narrow physiological specialization, because Ampelomyces were able to infect powdery mildew species they were unlikely to have encountered in nature, but instead appears to result from temporal isolation.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 19358
  AU  - Kiss,Levente 
  AU  - Pintye,Alexandra 
  AU  - Kov?cs,G?bor M. 
  AU  - Jankovics,T?nde 
  AU  - Fontaine,Michael C.
  AU  - Harvey,Nick 
  AU  - Xu,Xiangming 
  AU  - Nicot,Philippe C.
  AU  - Bardin,Marc 
  AU  - Shykoff,Jacqui A.
  AU  - Giraud,Tatiana 
  T1  - Temporal isolation explains host-related genetic differentiation in a group of widespread mycoparasitic fungi
  PY  - 2011
  KW  - biotrophic pathogens; isolation in time; speciation; tri-trophic interactions
  UR  - http://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2011.05007.x/full
  N2  - Understanding the mechanisms responsible for divergence and specialization of pathogens on different hosts is of fundamental importance, especially in the context of the emergence of new diseases via host shifts. Temporal isolation has been reported in a few plants and parasites but is probably one of the least studied speciation processes. We studied whether temporal isolation could be responsible for the maintenance of genetic differentiation among sympatric populations of Ampelomyces, widespread intracellular mycoparasites of powdery mildew fungi, themselves plant pathogens. The timing of transmission of Ampelomyces depends on the life cycles of the powdery mildew species they parasitize. ITS sequences and microsatellite markers showed that Ampelomyces populations found in apple powdery mildew (Podosphaera leucotricha) were genetically highly differentiated from other Ampelomyces populations sampled from several other powdery mildew species across Europe, infecting plant hosts other than apple. While P. leucotricha starts its life cycle early in spring, and the main apple powdery mildew epidemics occur before summer, the fungal hosts of the other Ampelomyces cause epidemics mainly in summer and autumn. When two powdery mildew species were experimentally exposed to Ampelomyces strains naturally occurring in P. leucotricha in spring, and to strains naturally present in other mycohost species in autumn, cross-infections always occurred. Thus, the host-related genetic differentiation in Ampelomyces cannot be explained by narrow physiological specialization, because Ampelomyces were able to infect powdery mildew species they were unlikely to have encountered in nature, but instead appears to result from temporal isolation.
  L3  - 10.1111/j.1365-294X.2011.05007.x
  JF  - Molecular Ecology
  VL  - 20
  IS  - 7
  SP  - 1492
  EP  - 1507
  ER  -