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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1111/jpy.13373
|2 doi
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|a pubmed25n1204.xml
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|a DE-627
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|a eng
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|a Preuss, Maren
|e verfasserin
|4 aut
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|a Gene-rich plastid genomes of two parasitic red algal species, Laurencia australis and L. verruciformis (Rhodomelaceae, Ceramiales), and a taxonomic revision of Janczewskia
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 13.10.2023
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|a Date Revised 18.10.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2023 Phycological Society of America.
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|a Parasitic red algae are an interesting system for investigating the genetic changes that occur in parasites. These parasites have evolved independently multiple times within the red algae. The functional loss of plastid genomes can be investigated in these multiple independent examples, and fine-scale patterns may be discerned. The only plastid genomes from red algal parasites known so far are highly reduced and missing almost all photosynthetic genes. Our study assembled and annotated plastid genomes from the parasites Janczewskia tasmanica and its two Laurencia host species (Laurencia elata and one unidentified Laurencia sp. A25) from Australia and Janczewskia verruciformis, its host species (Laurencia catarinensis), and the closest known free-living relative (Laurencia obtusa) from the Canary Islands (Spain). For the first time we show parasitic red algal plastid genomes that are similar in size and gene content to free-living host species without any gene loss or genome reduction. The only exception was two pseudogenes (moeB and ycf46) found in the plastid genome of both isolates of J. tasmanica, indicating potential for future loss of these genes. Further comparative analyses with the three highly reduced plastid genomes showed possible gene loss patterns, in which photosynthetic gene categories were lost followed by other gene categories. Phylogenetic analyses did not confirm monophyly of Janczewskia, and the genus was subsumed into Laurencia. Further investigations will determine if any convergent small-scale patterns of gene loss exist in parasitic red algae and how these are applicable to other parasitic systems
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Janczewskia
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|a Laurencia
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| 650 |
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|a moeB
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| 650 |
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|a obligate hemiparasites
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| 650 |
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|a parasite origin
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| 650 |
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|a phylogenomics
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|a pseudogenes
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|a red algal parasites
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| 650 |
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|a reductive plastid evolution
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| 650 |
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|a ycf46
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|a Díaz-Tapia, Pilar
|e verfasserin
|4 aut
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|a Verbruggen, Heroen
|e verfasserin
|4 aut
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|a Zuccarello, Giuseppe C
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of phycology
|d 1966
|g 59(2023), 5 vom: 21. Okt., Seite 950-962
|w (DE-627)NLM098182994
|x 1529-8817
|7 nnas
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| 773 |
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|g volume:59
|g year:2023
|g number:5
|g day:21
|g month:10
|g pages:950-962
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|u http://dx.doi.org/10.1111/jpy.13373
|3 Volltext
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