Putative Meiotic Toolkit in the Dinoflagellate <i>Prorocentrum cordatum</i>: Additional Evidence for Sexual Process from Transcriptome

Berdieva, Mariia; Pozdnyakov, Ilya; Kalinina, Vera; Skarlato, Sergei

doi:10.1111/jeu.12845

Cited by 5 publications

(5 citation statements)

References 43 publications

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“…2b ), of which, Mei2, was highly expressed (FPKM = 190.03). Mei2 is a regulatory RNA-binding protein which plays a vital role in the meiosis initiation [ 68 , 69 ] and was originally discovered in yeast, then in plants, and more recently in several algal species including Fugacium kawagutii [ 70 ], Scrippsiella trochoidea [ 71 ], Prorocentrum donghaiense [ 38 ], Heterosigma akashiwo [ 72 ], and Prorocentrum cordatum [ 73 ]. Other highly expressed meiosis genes found in the g Noctiluca bloom included mini chromosome maintenance proteins (MCM2-7), which plays an important role in DNA replication during pre-meiotic S phase [ 74 ].…”

Section: Resultsmentioning

confidence: 99%

A grazing-driven positive nutrient feedback loop and active sexual reproduction underpin widespread Noctiluca green tides

Luo

Wang

Goés

et al. 2022

ISME Communications

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The mixoplankton green Noctiluca scintillans (gNoctiluca) is known to form extensive green tides in tropical coastal ecosystems prone to eutrophication. In the Arabian Sea, their recent appearance and annual recurrence have upended an ecosystem that was once exclusively dominated by diatoms. Despite evidence of strong links to eutrophication, hypoxia and warming, the mechanisms underlying outbreaks of this mixoplanktonic dinoflagellate remain uncertain. Here we have used eco-physiological measurements and transcriptomic profiling to ascribe gNoctiluca’s explosive growth during bloom formation to the form of sexual reproduction that produces numerous gametes. Rapid growth of gNoctiluca coincided with active ammonium and phosphate release from gNoctiluca cells, which exhibited high transcriptional activity of phagocytosis and metabolism generating ammonium. This grazing-driven nutrient flow ostensibly promotes the growth of phytoplankton as prey and offers positive support successively for bloom formation and maintenance. We also provide the first evidence that the host gNoctiluca cell could be manipulating growth of its endosymbiont population in order to exploit their photosynthetic products and meet critical energy needs. These findings illuminate gNoctiluca’s little known nutritional and reproductive strategies that facilitate its ability to form intense and expansive gNoctiluca blooms to the detriment of regional water, food and the socio-economic security in several tropical countries.

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Section: Resultsmentioning

confidence: 99%

A grazing-driven positive nutrient feedback loop and active sexual reproduction underpin widespread Noctiluca green tides

Luo

Wang

Goés

et al. 2022

ISME Communications

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“…antipodarum . To this end, we generated and curated a meiosis gene set using both the original ( Villeneuve and Hillers 2001 ; Schurko and Logsdon 2008 ) and more up-to-date ( Tvedte et al 2017 ; Berdieva et al 2021 ) inventories of conserved meiosis genes for all six species. These inventories discriminate between genes that specifically function in meiosis and genes that are pleiotropic with respect to function outside of meiosis.…”

Section: Methodsmentioning

confidence: 99%

Genome Evolution and Introgression in the New Zealand mud Snails Potamopyrgus estuarinus and Potamopyrgus kaitunuparaoa

Fields,

Jalinsky,

Bankers

et al. 2024

Genome Biology and Evolution

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We have sequenced, assembled, and analyzed the nuclear and mitochondrial genomes and transcriptomes of Potamopyrgus estuarinus and Potamopyrgus kaitunuparaoa, two prosobranch snail species native to New Zealand that together span the continuum from estuary to freshwater. These two species are the closest known relatives of the freshwater species Potamopyrgus antipodarum—a model for studying the evolution of sex, host–parasite coevolution, and biological invasiveness—and thus provide key evolutionary context for understanding its unusual biology. The P. estuarinus and P. kaitunuparaoa genomes are very similar in size and overall gene content. Comparative analyses of genome content indicate that these two species harbor a near-identical set of genes involved in meiosis and sperm functions, including seven genes with meiosis-specific functions. These results are consistent with obligate sexual reproduction in these two species and provide a framework for future analyses of P. antipodarum—a species comprising both obligately sexual and obligately asexual lineages, each separately derived from a sexual ancestor. Genome-wide multigene phylogenetic analyses indicate that P. kaitunuparaoa is likely the closest relative to P. antipodarum. We nevertheless show that there has been considerable introgression between P. estuarinus and P. kaitunuparaoa. That introgression does not extend to the mitochondrial genome, which appears to serve as a barrier to hybridization between P. estuarinus and P. kaitunuparaoa. Nuclear-encoded genes whose products function in joint mitochondrial-nuclear enzyme complexes exhibit similar patterns of nonintrogression, indicating that incompatibilities between the mitochondrial and the nuclear genome may have prevented more extensive gene flow between these two species.

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“…antipodarum . To this end, we generated and curated a meiosis gene set using both the original (Schurko and Logsdon Jr 2008; Villeneuve and Hillers 2001) and the most up-to-date (Berdieva, et al 2021; Tvedte, et al 2017) inventory of conserved meiosis genes. These inventories discriminate between genes that specifically function in meiosis and genes that are pleiotropic with respect to function outside of meiosis.…”

Section: Methodsmentioning

confidence: 99%

“…A catalog of meiosis genes present in the genomes of sexually reproducing P. estuarinus and P. kaitunuparaoa provides the basis for studying the maintenance/decay of sex-specific genes in the multiple separately derived obligately asexual lineages that characterize P. antipodarum. To this end, we generated and curated a meiosis gene set using both the original (Schurko and Logsdon Jr 2008;Villeneuve and Hillers 2001) and the most up-to-date (Berdieva, et al 2021;Tvedte, et al 2017) inventory of conserved meiosis genes. These inventories discriminate between genes that specifically function in meiosis and genes that are pleiotropic with respect to function outside of meiosis.…”

Section: Analysis Of Gene Families Associated With Meiotic Functionmentioning

confidence: 99%

Genome evolution and introgression in the New Zealand mud snailsPotamopyrgus estuarinusandPotamopyrgus kaitunuparaoa

Fields,

Jalinsky,

Bankers

et al. 2023

Preprint

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We have sequenced, assembled, and analyzed the nuclear and mitochondrial genomes and transcriptomes ofPotamopyrgus estuarinusandPotamopyrgus kaitunuparaoa, two prosobranch snail species native to New Zealand that together span the continuum from estuary to freshwater. These two species are the closest known relatives of the freshwater speciesP. antipodarum—a model for studying the evolution of sex, host-parasite coevolution, and biological invasiveness—and thus provide key evolutionary context for understanding its unusual biology. TheP. estuarinusandP. kaitunuparaoagenomes are very similar in size and overall gene content. Comparative analyses of genome content indicate that these two species harbor a near-identical set of genes involved in meiosis and sperm functions, including seven genes with meiosis-specific functions. These results are consistent with obligate sexual reproduction in these two species and provide a framework for future analyses ofP. antipodarum—a species comprising both obligately sexual and obligately asexual lineages, each separately derived from a sexual ancestor. Genome-wide multigene phylogenetic analyses indicate thatP. kaitunuparaoais likely the closest relative toP. antipodarum.We nevertheless show that there has been considerable introgression betweenP. estuarinusandP. kaitunuparaoa.That introgression does not extend to the mitochondrial genome, which appears to serve as a barrier to hybridization betweenP. estuarinusandP. kaitunuparaoa.Nuclear-encoded genes whose products function in joint mitochondrial-nuclear enzyme complexes exhibit similar patterns of non-introgression, indicating that incompatibilities between the mitochondrial and the nuclear genome may have prevented more extensive gene flow between these two species.Significance StatementNo whole-nuclear genome sequences are currently available for snails of the genusPotamopyrgus, best known forPotamopyrgus antipodarum, an invasive species of rivers and lakes worldwide, and a famous model for the study of the evolution of sex. We have sequenced and analyzed the genome of sexualP. estuarinusandP. kaitunuparaoa, the closest known relatives ofP. antipodarum. We show that 1) the genomes are very similar in gene content and size, 2)P. kaitunuparaoais the closest relative toP. antipodarum, 3) significant introgression has occurred betweenP. estuarinusandP. kaitunuparaoa; these genomes set the stage for powerful direct analyses of the genomic features,e.g., sex to asexual transitions and invasive success, that makeP. antipodarumunique.

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Putative Meiotic Toolkit in the Dinoflagellate Prorocentrum cordatum: Additional Evidence for Sexual Process from Transcriptome

Cited by 5 publications

References 43 publications

A grazing-driven positive nutrient feedback loop and active sexual reproduction underpin widespread Noctiluca green tides

A grazing-driven positive nutrient feedback loop and active sexual reproduction underpin widespread Noctiluca green tides

Genome Evolution and Introgression in the New Zealand mud Snails Potamopyrgus estuarinus and Potamopyrgus kaitunuparaoa

Genome evolution and introgression in the New Zealand mud snailsPotamopyrgus estuarinusandPotamopyrgus kaitunuparaoa

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