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Citation for Study 17951

Citation title: "Characterization of a new chytrid species parasitic on the dinoflagellate, Peridinium gatunense.".

Study name: "Characterization of a new chytrid species parasitic on the dinoflagellate, Peridinium gatunense.".

This study is part of submission 17951 (Status: Published).

Citation

Leshem T., Letcher P.M., Powell M.J., & Sukenik A. 2015. Characterization of a new chytrid species parasitic on the dinoflagellate, Peridinium gatunense. Mycologia, .

Authors

• Leshem T.
• Letcher P.M. (submitter) 205-348-8208
• Powell M.J.
• Sukenik A.

Abstract

Only a few chytrid fungi have been reported as parasites of dinoflagellates. Among these reports, chytrids are periodically observed growing on the dinoflagellate, Peridinium gatunense, in Lake Kinneret (Sea of Galilee), Israel. Because of the distinctive roles of parasitic chytrid fungi in decreasing phytoplankton populations and in transforming inedible algae into chytrid biomass which zooplankton grazers can eat, characterizing dinoflagellate parasites contributes to our understanding of the sustainability of this important water resource. An undescribed chytrid parasite of P. gatunense from Lake Kinneret has recently been brought into pure culture (KLL_TL-060613), facilitating exploration of its infection process. To evaluate the ability of this chytrid to impact host populations, we determined the effect of: (1) temperature and light on prevalence of infection and (2) host growth phase and parasite:host ratio on rate of infection. The greatest amplification in host infection occurred in cultures grown in the dark at 25 C. The percentage of host cells infected increased as the availability of host cells compared to parasite cells increased. These results demonstrate that environmental factors influence the chytrid?s potential to impact Peridinium gatunense populations. Because this chytrid had not been described taxonomically, we characterized its thallus morphology, development, zoospore ultrastructure and phylogenetic relationships. Zoospore ultrastructure was compatible with the Group II type zoospore characteristic of the family Chytridiaceae in the Chytridiales. Consistent with this observation, phylogenetic analyses of nuc 28S rDNA D1-D3 domains (28S) placed the chytrid in a clade among described taxa in the Chytridiaceae. Because thallus morphology was distinct from these other taxa, as well as other described parasites of dinoflagellates, this chytrid is described as a new genus and species, Dinochytrium kinnereticum.

Keywords

Chytridiaceae, Chytridiales, infectivity, Lake Kinneret, phylogenetics, taxonomy, zoospore ultrastructure.

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S17951
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref24848,
  	 author = {Tamar  Leshem and Peter M Letcher and Martha J Powell and Assaf  Sukenik},
  	 title = {Characterization of a new chytrid species parasitic on the dinoflagellate, Peridinium gatunense.},
  	 year = {2015},
  	 keywords = {Chytridiaceae, Chytridiales, infectivity, Lake Kinneret, phylogenetics, taxonomy, zoospore ultrastructure.},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Mycologia},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Only a few chytrid fungi have been reported as parasites of dinoflagellates. Among these reports, chytrids are periodically observed growing on the dinoflagellate, Peridinium gatunense, in Lake Kinneret (Sea of Galilee), Israel. Because of the distinctive roles of parasitic chytrid fungi in decreasing phytoplankton populations and in transforming inedible algae into chytrid biomass which zooplankton grazers can eat, characterizing dinoflagellate parasites contributes to our understanding of the sustainability of this important water resource. An undescribed chytrid parasite of P. gatunense from Lake Kinneret has recently been brought into pure culture (KLL_TL-060613), facilitating exploration of its infection process. To evaluate the ability of this chytrid to impact host populations, we determined the effect of: (1) temperature and light on prevalence of infection and (2) host growth phase and parasite:host ratio on rate of infection. The greatest amplification in host infection occurred in cultures grown in the dark at 25 C. The percentage of host cells infected increased as the availability of host cells compared to parasite cells increased. These results demonstrate that environmental factors influence the chytrid?s potential to impact Peridinium gatunense populations.   Because this chytrid had not been described taxonomically, we characterized its thallus morphology, development, zoospore ultrastructure and phylogenetic relationships.  Zoospore ultrastructure was compatible with the Group II type zoospore characteristic of the family Chytridiaceae in the Chytridiales.  Consistent with this observation, phylogenetic analyses of nuc 28S rDNA D1-D3 domains (28S) placed the chytrid in a clade among described taxa in the Chytridiaceae.  Because thallus morphology was distinct from these other taxa, as well as other described parasites of dinoflagellates, this chytrid is described as a new genus and species, Dinochytrium kinnereticum.  }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 24848
  AU  - Leshem,Tamar 
  AU  - Letcher,Peter M
  AU  - Powell,Martha J
  AU  - Sukenik,Assaf 
  T1  - Characterization of a new chytrid species parasitic on the dinoflagellate, Peridinium gatunense.
  PY  - 2015
  KW  - Chytridiaceae
  KW  - Chytridiales
  KW  - infectivity
  KW  - Lake Kinneret
  KW  - phylogenetics
  KW  - taxonomy
  KW  - zoospore ultrastructure.
  UR  - http://dx.doi.org/
  N2  - Only a few chytrid fungi have been reported as parasites of dinoflagellates. Among these reports, chytrids are periodically observed growing on the dinoflagellate, Peridinium gatunense, in Lake Kinneret (Sea of Galilee), Israel. Because of the distinctive roles of parasitic chytrid fungi in decreasing phytoplankton populations and in transforming inedible algae into chytrid biomass which zooplankton grazers can eat, characterizing dinoflagellate parasites contributes to our understanding of the sustainability of this important water resource. An undescribed chytrid parasite of P. gatunense from Lake Kinneret has recently been brought into pure culture (KLL_TL-060613), facilitating exploration of its infection process. To evaluate the ability of this chytrid to impact host populations, we determined the effect of: (1) temperature and light on prevalence of infection and (2) host growth phase and parasite:host ratio on rate of infection. The greatest amplification in host infection occurred in cultures grown in the dark at 25 C. The percentage of host cells infected increased as the availability of host cells compared to parasite cells increased. These results demonstrate that environmental factors influence the chytrid?s potential to impact Peridinium gatunense populations.   Because this chytrid had not been described taxonomically, we characterized its thallus morphology, development, zoospore ultrastructure and phylogenetic relationships.  Zoospore ultrastructure was compatible with the Group II type zoospore characteristic of the family Chytridiaceae in the Chytridiales.  Consistent with this observation, phylogenetic analyses of nuc 28S rDNA D1-D3 domains (28S) placed the chytrid in a clade among described taxa in the Chytridiaceae.  Because thallus morphology was distinct from these other taxa, as well as other described parasites of dinoflagellates, this chytrid is described as a new genus and species, Dinochytrium kinnereticum.  
  L3  - 
  JF  - Mycologia
  VL  - 
  IS  - 
  ER  -