| Intracellular invasion of green algae in a salamander host. | |
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MedLine Citation:
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PMID: 21464324 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The association between embryos of the spotted salamander (Ambystoma maculatum) and green algae ("Oophila amblystomatis" Lamber ex Printz) has been considered an ectosymbiotic mutualism. We show here, however, that this symbiosis is more intimate than previously reported. A combination of imaging and algal 18S rDNA amplification reveals algal invasion of embryonic salamander tissues and cells during development. Algal cells are detectable from embryonic and larval Stages 26-44 through chlorophyll autofluorescence and algal 18S rDNA amplification. Algal cell ultrastructure indicates both degradation and putative encystment during the process of tissue and cellular invasion. Fewer algal cells were detected in later-stage larvae through FISH, suggesting that the decline in autofluorescent cells is primarily due to algal cell death within the host. However, early embryonic egg capsules also contained encysted algal cells on the inner capsule wall, and algal 18S rDNA was amplified from adult reproductive tracts, consistent with oviductal transmission of algae from one salamander generation to the next. The invasion of algae into salamander host tissues and cells represents a unique association between a vertebrate and a eukaryotic alga, with implications for research into cell-cell recognition, possible exchange of metabolites or DNA, and potential congruence between host and symbiont population structures. |
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Authors:
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Ryan Kerney; Eunsoo Kim; Roger P Hangarter; Aaron A Heiss; Cory D Bishop; Brian K Hall |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. Date: 2011-04-04 |
Journal Detail:
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Title: Proceedings of the National Academy of Sciences of the United States of America Volume: 108 ISSN: 1091-6490 ISO Abbreviation: Proc. Natl. Acad. Sci. U.S.A. Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-04-20 Completed Date: 2011-06-17 Revised Date: 2011-10-19 |
Medline Journal Info:
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Nlm Unique ID: 7505876 Medline TA: Proc Natl Acad Sci U S A Country: United States |
Other Details:
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Languages: eng Pagination: 6497-502 Citation Subset: IM |
Affiliation:
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Department of Biology, Dalhousie University, Halifax, NS, Canada B3H 4J1. ryankerney@gmail.com |
| Data Bank Information | |
Bank Name/Acc. No.:
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GENBANK/HM590633; HM590634 |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Ambystoma Animals Base Sequence Cell Communication / physiology* Chlorophyll / genetics, metabolism Chlorophyta / cytology, genetics, metabolism* DNA, Ribosomal / genetics, metabolism* Larva / cytology, metabolism Molecular Sequence Data RNA, Ribosomal, 18S / genetics, metabolism* Symbiosis / physiology* |
| Chemical | |
Reg. No./Substance:
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0/DNA, Ribosomal; 0/RNA, Ribosomal, 18S; 1406-65-1/Chlorophyll |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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