Marine gregarine genomes reveal the breadth of apicomplexan diversity with a partially conserved glideosome machinery
Boisard, Julie LU
; Duvernois-Berthet, Evelyne
; Duval, Linda
; Schrével, Joseph
; Guillou, Laure
; Labat, Amandine
; Le Panse, Sophie
; Prensier, Gérard
; Ponger, Loïc
and Florent, Isabelle
(2022)
In BMC Genomics
23.
- Abstract
Our current view of the evolutionary history, coding and adaptive capacities of Apicomplexa, protozoan parasites of a wide range of metazoan, is currently strongly biased toward species infecting humans, as data on early diverging apicomplexan lineages infecting invertebrates is extremely limited. Here, we characterized the genome of the marine eugregarine Porospora gigantea, intestinal parasite of Lobsters, remarkable for the macroscopic size of its vegetative feeding forms (trophozoites) and its gliding speed, the fastest so far recorded for Apicomplexa. Two highly syntenic genomes named A and B were assembled. Similar in size (~ 9 Mb) and coding capacity (~ 5300 genes), A and B genomes are 10.8% divergent at the nucleotide level,... (More)
Our current view of the evolutionary history, coding and adaptive capacities of Apicomplexa, protozoan parasites of a wide range of metazoan, is currently strongly biased toward species infecting humans, as data on early diverging apicomplexan lineages infecting invertebrates is extremely limited. Here, we characterized the genome of the marine eugregarine Porospora gigantea, intestinal parasite of Lobsters, remarkable for the macroscopic size of its vegetative feeding forms (trophozoites) and its gliding speed, the fastest so far recorded for Apicomplexa. Two highly syntenic genomes named A and B were assembled. Similar in size (~ 9 Mb) and coding capacity (~ 5300 genes), A and B genomes are 10.8% divergent at the nucleotide level, corresponding to 16–38 My in divergent time. Orthogroup analysis across 25 (proto)Apicomplexa species, including Gregarina niphandrodes, showed that A and B are highly divergent from all other known apicomplexan species, revealing an unexpected breadth of diversity. Phylogenetically these two species branch sisters to Cephaloidophoroidea, and thus expand the known crustacean gregarine superfamily. The genomes were mined for genes encoding proteins necessary for gliding, a key feature of apicomplexans parasites, currently studied through the molecular model called glideosome. Sequence analysis shows that actin-related proteins and regulatory factors are strongly conserved within apicomplexans. In contrast, the predicted protein sequences of core glideosome proteins and adhesion proteins are highly variable among apicomplexan lineages, especially in gregarines. These results confirm the importance of studying gregarines to widen our biological and evolutionary view of apicomplexan species diversity, and to deepen our understanding of the molecular bases of key functions such as gliding, well known to allow access to the intracellular parasitic lifestyle in Apicomplexa.
(Less)
- author
- Boisard, Julie
LU
; Duvernois-Berthet, Evelyne
; Duval, Linda
; Schrével, Joseph
; Guillou, Laure
; Labat, Amandine
; Le Panse, Sophie
; Prensier, Gérard
; Ponger, Loïc
and Florent, Isabelle
- organization
- publishing date
- 2022-12
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Apicomplexa, Comparative genomics, Genome assembly, Gliding, Marine gregarine, Phylogeny
- in
- BMC Genomics
- volume
- 23
- article number
- 485
- publisher
- BioMed Central (BMC)
- external identifiers
-
- pmid:35780080
- scopus:85133342306
- ISSN
- 1471-2164
- DOI
- 10.1186/s12864-022-08700-8
- language
- English
- LU publication?
- yes
- id
- dc0765c8-051d-4cbd-bf4c-43ce26738c95
- date added to LUP
- 2022-09-23 15:25:36
- date last changed
- 2024-04-15 19:11:08
@article{dc0765c8-051d-4cbd-bf4c-43ce26738c95,
abstract = {{<p>Our current view of the evolutionary history, coding and adaptive capacities of Apicomplexa, protozoan parasites of a wide range of metazoan, is currently strongly biased toward species infecting humans, as data on early diverging apicomplexan lineages infecting invertebrates is extremely limited. Here, we characterized the genome of the marine eugregarine Porospora gigantea, intestinal parasite of Lobsters, remarkable for the macroscopic size of its vegetative feeding forms (trophozoites) and its gliding speed, the fastest so far recorded for Apicomplexa. Two highly syntenic genomes named A and B were assembled. Similar in size (~ 9 Mb) and coding capacity (~ 5300 genes), A and B genomes are 10.8% divergent at the nucleotide level, corresponding to 16–38 My in divergent time. Orthogroup analysis across 25 (proto)Apicomplexa species, including Gregarina niphandrodes, showed that A and B are highly divergent from all other known apicomplexan species, revealing an unexpected breadth of diversity. Phylogenetically these two species branch sisters to Cephaloidophoroidea, and thus expand the known crustacean gregarine superfamily. The genomes were mined for genes encoding proteins necessary for gliding, a key feature of apicomplexans parasites, currently studied through the molecular model called glideosome. Sequence analysis shows that actin-related proteins and regulatory factors are strongly conserved within apicomplexans. In contrast, the predicted protein sequences of core glideosome proteins and adhesion proteins are highly variable among apicomplexan lineages, especially in gregarines. These results confirm the importance of studying gregarines to widen our biological and evolutionary view of apicomplexan species diversity, and to deepen our understanding of the molecular bases of key functions such as gliding, well known to allow access to the intracellular parasitic lifestyle in Apicomplexa.</p>}},
author = {{Boisard, Julie and Duvernois-Berthet, Evelyne and Duval, Linda and Schrével, Joseph and Guillou, Laure and Labat, Amandine and Le Panse, Sophie and Prensier, Gérard and Ponger, Loïc and Florent, Isabelle}},
issn = {{1471-2164}},
keywords = {{Apicomplexa; Comparative genomics; Genome assembly; Gliding; Marine gregarine; Phylogeny}},
language = {{eng}},
publisher = {{BioMed Central (BMC)}},
series = {{BMC Genomics}},
title = {{Marine gregarine genomes reveal the breadth of apicomplexan diversity with a partially conserved glideosome machinery}},
url = {{http://dx.doi.org/10.1186/s12864-022-08700-8}},
doi = {{10.1186/s12864-022-08700-8}},
volume = {{23}},
year = {{2022}},
}