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Next Generation Taxonomy: Ciliophora and their bacterial symbionts as a proof of concept

CORDIS provides links to public deliverables and publications of HORIZON projects.

Links to deliverables and publications from FP7 projects, as well as links to some specific result types such as dataset and software, are dynamically retrieved from OpenAIRE .

Deliverables

Documents, reports (7)
Training activities report (opens in new window)

Winter/summer schools’ / training workshops’ report. An updated version will be provided at month 61.

Second progress report (opens in new window)

Report on dissemination activity, public engagement activities, exploitation strategy, and secondments

List of ciliate strains/species on which the multidisciplinary characterization of bacterial symbionts has been performed (opens in new window)

List of ciliate strains/species on which the multidisciplinary characterization of bacterial symbionts has been performed. An updated version will be provided at month 61.

Midterm meeting report (opens in new window)

Management meeting report

Kick-off meeting report (opens in new window)

Kickoff meeting report

First progress report (opens in new window)

Report on dissemination activity public engagement activities exploitation strategy and secondments

List of the different kind of sequences deposited in online databases (opens in new window)

List of the different kind of sequences (mitogenome, symbiont genome, transcriptome) deposited in online databases (e.g. GenBank). An updated version will be provided at month 61.

Publications

Peer reviewed articles (18)
Comparative study and morphological plasticity of an Italian and a Chinese population of the protist ciliate Pseudokeronopsis erythrina (Hypotrichia, Kentrurostylida) with a mitochondrial genome analysis (opens in new window)

Author(s): Wenxin Xu, Leandro Gammuto, Valentina Serra, Xiaotian Luo, Fabrizio Erra, Jie Huang, Giulia Cerritelli, Giulio Petroni, Letizia Modeo
Published in: Water Biology and Security, Issue 4, 2025, Page(s) 100345, ISSN 2772-7351
Publisher: Elsevier BV
DOI: 10.1016/j.watbs.2024.100345

Multidisciplinary characterization of the new species Copemetopus mystakophoros and its symbionts with a proposal for the new class Copemetopea (Alveolata: Ciliophora) (opens in new window)

Author(s): Sergei I Fokin, Valentina Serra, Leandro Gammuto, Alessandro Allievi, Giulio Petroni, Letizia Modeo
Published in: Zoological Journal of the Linnean Society, 2023, ISSN 0024-4082
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/zoolinnean/zlac114

The neotypification of Frontonia vernalis (Ehrenberg, 1833) Ehrenberg, 1838 and the description of Frontonia paravernalis sp. nov. trigger a critical revision of frontoniid systematics (opens in new window)

Author(s): Valentina Serra; Aldo D’Alessandro; Venkatamahesh Nitla; Leandro Gammuto; Letizia Modeo; Giulio Petroni; Sergei I. Fokin
Published in: BMC Zoology 6(1) 4, Issue 4, 2021, ISSN 2056-3132
Publisher: Springer Nature
DOI: 10.1186/s40850-021-00067-9

'Candidatus Sarmatiella mevalonica' endosymbiont of the ciliate Paramecium provides insights on evolutionary plasticity among Rickettsiales (opens in new window)

Author(s): Michele Castelli, Olivia Lanzoni, Tiago Nardi, Stefano Lometto, Letizia Modeo, Alexey Potekhin, Davide Sassera, Giulio Petroni
Published in: Environmental Microbiology, Issue 23(3), 2021, Page(s) 1684-1701, ISSN 1462-2920
Publisher: John Wiley & Sons Ltd
DOI: 10.1111/1462-2920.15396

'Candidatus Gromoviella agglomerans', a novel intracellular Holosporaceae parasite of the ciliate Paramecium showing marked genome reduction. (opens in new window)

Author(s): Michele Castelli; Olivia Lanzoni; Olivia Lanzoni; Michele Giovannini; Natalia Lebedeva; Leandro Gammuto; Davide Sassera; Maksim Melekhin; Alexey Potekhin; Sergei I. Fokin; Sergei I. Fokin; Giulio Petroni
Published in: Environmental microbiology reports, Issue 1, 2022, ISSN 1758-2229
Publisher: Wiley-Blackwell
DOI: 10.1111/1758-2229.13021

Host association and intracellularity evolved multiple times independently in the<i>Rickettsiales</i> (opens in new window)

Author(s): Michele Castelli; Tiago Nardi; Leandro Gammuto; Greta Bellinzona; Elena Sabaneyeva; Alexey Potekhin; Valentina Serra; Giulio Petroni; Davide Sassera
Published in: Nature Communication, Issue 2, 2024, ISSN 2041-1723
Publisher: Nature Publishing Group
DOI: 10.1101/2022.10.13.511287

Molecular phylogeny and taxonomy of four &lt;i&gt;Remanella&lt;/i&gt; species (Protozoa, Ciliophora): A flagship genus of karyorelictean ciliates, with descriptions of two new species (opens in new window)

Author(s): Ming-Zhen Ma; Yu-Jie Liu; Yuan Xu; Bo-Rong Lu; Yu-Qing Li; Saleh A. AL-Farraj; Giulio Petroni; Wei-Bo Song; Ying Yan
Published in: Zoological Research, Issue 2, 2022, ISSN 2095-8137
Publisher: Kunming Institute of Zoology
DOI: 10.24272/j.issn.2095-8137.2022.014

Phylogeny of Neobursaridium reshapes the systematics of Paramecium (Oligohymenophorea, Ciliophora) (opens in new window)

Author(s): Valentina Serra; Sergei I. Fokin; Sergei I. Fokin; Sergei I. Fokin; Leandro Gammuto; Venkatamahesh Nitla; Michele Castelli; Charan Kumar Basuri; Adireddy Satyaveni; Bhagavatula Venkata Sandeep; Letizia Modeo; Giulio Petroni
Published in: Zoologica Scripta, Issue 1, 2020, ISSN 1463-6409
Publisher: Wiley
DOI: 10.1111/zsc.12464

Morphology and phylogeny of four trachelocercid ciliates (Ciliophora, Karyorelictea, Trachelocercidae) from North China Sea, with description of a new species (opens in new window)

Author(s): Ye, T., Song, W., Li, Y., Al-Rasheid, K., Serra, V., & Ma, M.
Published in: European Journal of Protistology, 2023, ISSN 0932-4739
Publisher: Elsevier BV
DOI: 10.1016/j.ejop.2023.126025

Molecular phylogenetic position and description of a new genus and species of freshwater Chaetonotidae (Gastrotricha: Chaetonotida: Paucitubulatina), and the annotation of its mitochondrial genome (opens in new window)

Author(s): Leandro Gammuto, Valentina Serra, Giulio Petroni, M. Antonio Todaro
Published in: Invertebrate Systematics, Issue 38, 2025, ISSN 1445-5226
Publisher: Commonwealth Scientific and Industrial Research Organization Publishing
DOI: 10.1071/is23059

Bacterial symbiosis in ciliates (Alveolata, Ciliophora): Roads traveled and those still to be taken (opens in new window)

Author(s): Sergei I. Fokin; Valentina Serra
Published in: Journal of Eukaryotic Microbiology, Issue 2, 2022, ISSN 1550-7408
Publisher: John Wiley & Sons, Inc.
DOI: 10.1111/jeu.12886

Holospora-like bacteria “Candidatus Gortzia yakutica” and Preeria caryophila: ultrastructure, promiscuity, and biogeography of the symbionts. (opens in new window)

Author(s): Fokin, S. I., Lebedeva, N. A., Potekhin, A., Gammuto, L., Petroni, G., & Serra, V. (2023).
Published in: European Journal of Protistology, 2023, ISSN 0932-4739
Publisher: Elsevier BV
DOI: 10.1016/j.ejop.2023.125998

The obligate symbiont “Candidatus Megaira polyxenophila” has variable effects on the growth of different host species (opens in new window)

Author(s): Pasqualetti, C., Szokoli, F., Rindi, L., Petroni, G., & Schrallhammer, M.
Published in: Frontiers in Microbiology, 2020, ISSN 1664-302X
Publisher: Frontiers Media
DOI: 10.3389/fmicb.2020.01425

Characterization of a Pseudokeronopsis Strain (Ciliophora, Urostylida) and Its Bacterial Endosymbiont “Candidatus Trichorickettsia”(Alphaproteobacteria, Rickettsiales) (opens in new window)

Author(s): Castelli, M., Serra, V., Gammuto, L., Senra, M. V., Modeo, L., & Petroni, G.
Published in: Diversity, 2022, ISSN 1424-2818
Publisher: Multidisciplinary Digital Publishing Institute (MDPI)
DOI: 10.3390/d14121032

Cryptic diversity in Paramecium multimicronucleatum revealed with a polyphasic approach (opens in new window)

Author(s): Melekhin, M., Yakovleva, Y., Lebedeva, N., Nekrasova, I., Nikitashina, L., Castelli, M., Mayén-Estrada, R., Romanovich, E.A., Petroni, G., & Potekhin, A.
Published in: Microorganisms, 2022, ISSN 2076-2607
Publisher: MDPI
DOI: 10.3390/microorganisms10050974

Algal diversity in Paramecium bursaria: species identification, detection of Choricystis parasitica, and assessment of the interaction specificity. (opens in new window)

Author(s): Flemming, F. E., Potekhin, A., Pröschold, T., & Schrallhammer, M.
Published in: Diversity, 2020, ISSN 1424-2818
Publisher: Multidisciplinary Digital Publishing Institute (MDPI)
DOI: 10.3390/d12080287

Novel evolutionary insights on the interactions of the <i>Holosporales</i> ( <i>Alphaproteobacteria</i> ) with eukaryotic hosts from comparative genomics (opens in new window)

Author(s): Michele Giovannini, Giulio Petroni, Michele Castelli
Published in: Environmental Microbiology, Issue 26, 2025, ISSN 1462-2912
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/1462-2920.16562

"Morphology, ultrastructure, genomics, and phylogeny of Euplotes vanleeuwenhoeki sp. nov. and its ultra-reduced endosymbiont ""Candidatus Pinguicoccus supinus"" sp. nov" (opens in new window)

Author(s): Valentina Serra; Leandro Gammuto; Venkatamahesh Nitla; Michele Castelli; Michele Castelli; Olivia Lanzoni; Davide Sassera; Claudio Bandi; Bhagavatula Venkata Sandeep; Franco Verni; Letizia Modeo; Giulio Petroni
Published in: Scientific Reports, Vol 10, Iss 1, Pp 1-27 (2020), Issue 2, 2020, ISSN 2045-2322
Publisher: Nature Publishing Group
DOI: 10.1038/s41598-020-76348-z

Conference proceedings (21)
Morphological plasticity and species determination: A case study from Pseudokeronopsis erythrina Chen et al. 2011 (Ciliophora, Hypotrichia, Urostylida). [POSTER]

Author(s): Xu W., Gammuto L., Modeo L., Serra V., Luo X., Petroni G.
Published in: IX European Congress of Protistology (ECOP) & annual Congress of the International Society of Protistologists (ISOP), 2023
Publisher: International Society of Protistologists (ISOP)

Contributions to the mobilid genus Leiotrocha Fabre-Domergue, 1888. [COMMUNICATION]

Author(s): de Jager G., Serra V., Gammuto L.; Basson L., Petroni G.
Published in: IX European Congress of Protistology (ECOP) & annual Congress of the International Society of Protistologists (ISOP), 2023
Publisher: International Society of Protistologists (ISOP)

Next generation taxonomy of a novel predatory ciliate of the genus Lacrymaria (Alveolata, Ciliophora): the importance of in-depth descriptions of unicellular organisms [COMMUNICATION]

Author(s): Serra V., Allievi A., Gammuto L., Fokin S.I., Petroni G., Modeo L.
Published in: 82° Congresso dell'Unione Zoologica Italiana (UZI), 2023
Publisher: Unione Zoologica Italiana (UZI)

A new litostomatean (Ciliophora) species from Tuscany, described according to the standards of Next Generation Taxonomy. [COMMUNICATION]

Author(s): Allievi A., Gammuto L., Fokin S.I., Petroni G., Modeo L. Serra V.
Published in: IX European Congress of Protistology (ECOP) & annual Congress of the International Society of Protistologists (ISOP), 2023
Publisher: International Society of Protistologists (ISOP)

Lump Or Split? A Critical Review Of The Taxonomic History Of Genera Lacrymaria And Phialina (Alveolata, Ciliophora) With The Production Of A Valid Species Compendium And A Morphological Identification Key [COMMUNICATION]

Author(s): Alessandro Allievi, Letizia Modeo, Leandro Gammuto, Giulio Petroni, Valentina Serra
Published in: 16th International Congress of Protistology 2025, Joint meeting of ICOP/ISOP 2025, 2025
Publisher: Korean Society of Protistologists

Holospora-like bacteria “Candidatus Gortzia yakutica” and Preeria caryophila: New data on ultrastructure, biogeography and host specificity of the symbionts. [COMMUNICATION]

Author(s): Fokin S.I., Lebedeva N., Potekhin A.; Gammuto L., Petroni G., Serra V.
Published in: IX European Congress of Protistology (ECOP) & annual Congress of the International Society of Protistologists (ISOP), 2023
Publisher: International Society of Protistologists (ISOP)

Next Generation Taxonomy of a novel predatory ciliate of the genus Lacrymaria (Alveolata, Ciliophora) [COMMUNICATION]

Author(s): Serra V., Allievi A., Gammuto L., Fokin S.I., Petroni G., Modeo L.
Published in: 4° International Symposium on Ciliate Biology with 8° International Conference of Indian Network for Soil Contamination Research, 2024
Publisher: Indian Network for Soil Contamination Research

Evolutionary origins and diversification of the association with eukaryotes and the intracellular condition among the Rickettsiales.[COMMUNICATION]

Author(s): Castelli M., Nardi T., Gammuto L., Bellinzona G., Sabaneyeva E., Potekhin A., Serra V., Petroni G., Sassera D.
Published in: IX European Congress of Protistology (ECOP) & annual Congress of the International Society of Protistologists (ISOP), 2023
Publisher: International Society of Protistologists (ISOP)

Integrative taxonomic data exploring ciliate diversity and community structure in Rift Valley and marine aquatic ecosystems of Kenya and Lake Mondsee in Austria. [COMMUNICATION]

Author(s): Owuor M., Serra V., Pröschold T., Sonntag B., Ong’ondo G.
Published in: IX European Congress of Protistology (ECOP) & annual Congress of the International Society of Protistologists (ISOP), 2023
Publisher: International Society of Protistologists (ISOP)

Host association and intracellularity evolved multiple times independently in the Rickettsiales [POSTER]

Author(s): Sassera D.
Published in: Gordon Research Conference, 2023
Publisher: Gordon Research Conference

Multidisciplinary characterization of a novel ciliate endosymbiont: “Candidatus Pinguicoccus supinus” a verrucomicrobial species with highly reduced genome. [COMMUNICATION]

Author(s): Gammuto L., Serra V., Nitla V., Castelli M., Lanzoni O., Sassera D., Bandi C., Sandeep B.V., Modeo L., Petroni G.
Published in: VIII European Congress of Protistology (ECOP) joint International Society of Protistologists (ISOP), 2019
Publisher: International Society of Protistologists (ISOP)

Polycycla (Poljansky, 1951) mobilines from South African holothurian hosts. [POSTER]

Author(s): de Jager G., Serra V., Gammuto L.; Basson L., Petroni G.
Published in: IX European Congress of Protistology (ECOP) & annual Congress of the International Society of Protistologists (ISOP), 2023
Publisher: International Society of Protistologists (ISOP)

Integrating traditional descriptions with the holobiont concept and genomics analyses in the “next generation taxonomy” approach: Euplotes vanleeuwenhoeki sp. nov. as case study. [COMMUNICATION]

Author(s): Serra V., Gammuto L., Nitla V., Castelli M., Lanzoni O., Sassera D., Bandi C., Sandeep B.V., Modeo L., Petroni G.
Published in: VIII European Congress of Protistology (ECOP) joint International Society of Protistologists (ISOP), 2019
Publisher: International Society of Protistologists (ISOP)

“Next Generation Taxonomy: Ciliophora and their bacterial symbionts as a proof of concept (Acronym: NGTax)”. The project, the rationale behind, and practical applications [COMMUNICATION]

Author(s): Serra V.
Published in: 3° International Symposium on Ciliate Biology with 7° International Conference of Indian Network for Soil Contamination Research, 2022
Publisher: Indian Network for Soil Contamination Research

Preliminary morphological and molecular analyses on free-living ciliates from South Africa. [POSTER]

Author(s): Lenti A., Allievi A., Serra V., Petroni G.
Published in: IX European Congress of Protistology (ECOP) & annual Congress of the International Society of Protistologists (ISOP), 2023
Publisher: International Society of Protistologists (ISOP)

Multidisciplinary characterization of a novel ciliate endosymbiont: “Candidatus Pinguicoccus supinus” a verrucomicrobial species with highly reduced genome. [POSTER]

Author(s): Gammuto L., Serra V., Nitla V., Castelli M., Lanzoni O., Sassera D., Bandi C., Sandeep B.V., Modeo L., Petroni G.
Published in: 80° Congresso dell'Unione Zoologica Italiana (UZI), 2019
Publisher: Unione Zoologica Italiana (UZI)

Host association and intracellularity evolved multiple times independently in the Rickettsiales [POSTER]

Author(s): Castelli M.
Published in: Society for Molecular Biology & Evolution Conference (SMBE23), 2023
Publisher: Society for Molecular Biology & Evolution

Identification and analysis of cilia-associated gene families in Euplotes amieti (Ciliophora, Hypotrichida) [POSTER]

Author(s): Shen L., Sheng X., Gammuto L., Petroni G.; Xiong, X., Wu, J., Serra V.
Published in: IX European Congress of Protistology (ECOP) & annual Congress of the International Society of Protistologists (ISOP), 2023
Publisher: International Society of Protistologists (ISOP)

Can traditional descriptions integrate with the holobiont concept and genomics analyses? The “Next Generation Taxonomy” approach and the characterization of the ciliate Euplotes vanleeuwenhoeki sp. nov. and its bacterial endosymbiont with highly reduced genome as a case study. [POSTER]

Author(s): Serra V., Gammuto L., Nitla V., Castelli M., Lanzoni O., Sassera D., Bandi C., Sandeep B.V., Petroni G., Modeo L.
Published in: 80° Congresso dell'Unione Zoologica Italiana (UZI), 2024
Publisher: Unione Zoologica Italiana (UZI)

Biodiversity and genomic evolution of bacterial symbionts in Ciliophora: an overview through selected examples [COMMUNICATION]

Author(s): Petroni G.
Published in: EMBO The European Molecular Biology Organization Workshop, 2022
Publisher: EMBO

“Next Generation Taxonomy: Ciliophora and their bacterial symbionts as a proof of concept (Acronym: NGTax)”. The project, the rationale behind, and practical applications [COMMUNICATION]

Author(s): Petroni G., Gammuto L., Serra V.
Published in: 33° Congresso della Società Italiana di Protistologia onlus (SIP), 2022
Publisher: Società Italiana di Protistologia onlus

Other (2)
Ciliated protozoa from industrial WWTP activated sludge: a biodiversity survey including trophic interactions and redescription of <i>Bakuella subtropica</i> (Spirotrichea, Hypotrichia) according to Next Generation Taxonomy (opens in new window)

Author(s): Wanying Liao, Valentina Serra, Leandro Gammuto, Francesco Spennati, Gualtiero Mori, Giulio Munz, Letizia Modeo, Giulio Petroni
Published in: biorXiv, 2026
Publisher: openRxiv
DOI: 10.1101/2021.06.01.446513

Description of three new predator species of Litostomatea (Alveolata, Ciliophora), including sequencing and annotation of their mitochondrial genomes (opens in new window)

Author(s): Alessandro Allievi, Leandro Gammuto, Wanying Liao, Sergei I. Fokin, Giulio Petroni, Letizia Modeo, Valentina Serra
Published in: biorXiv, 2026
Publisher: openRxiv
DOI: 10.1101/2025.07.17.664916

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Last update: 8 October 2025

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Permalink: https://cordis.europa.eu/project/id/872767/results

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