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López-Martínez J, Álvarez-Tello FJ, Porchas-Cornejo MA, Nevárez-López CA, Muhlia-Almazán A, Urías-Padilla KV. Multiple reproduction forms in the polyps of the cannonball jellyfish Stomolophus sp. 2: Probable life-cycle reversal. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 2023; 339:239-252. [PMID: 36470843 DOI: 10.1002/jez.2673] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 10/17/2022] [Accepted: 10/27/2022] [Indexed: 12/12/2022]
Abstract
The jellyfish genera Stomolophus spp. is one of the most abundant in the Pacific Ocean, yet it has not been thoroughly studied. Until recently, research has been developed and directed to its knowledge because of the economic interest in its exploitation. The genus Stomolophus in the Pacific Ocean is composed of five species (S. agaricus, S. chunii, S. collaris, S. fritillaria, and S. meleagris), and Stomolophus sp. 2 has been recently reported in the central part of the Gulf of California. Therefore, this study aimed to describe in vivo the different developmental stages of Stomolophus sp. 2 life cycle. As a result, multiple polyp reproduction forms were described, such as polyp-stolon formation, polydisc strobilation with more than 20 ephyrae formed by each strobila, and polyp formation directly from juvenile ephyra. In the degenerating phase, the polyps turned into cysts induced by stress conditions, such as changes in temperature, oxygen, and food availability. The life cycle of Stomolophus sp. 2 can be distinguished from that of S. meleagris by showing various asexual reproduction mechanisms and polydisc-like strobilation. The formation of polyps directly from the ectoderm of degenerating juvenile medusae suggests the possibility of a reversion cycle. Because of the different life cycles between S. meleagris and S. sp. 2, in addition to their morphological and genetic differences, this study proposes that Stomolophus sp. 2 should be considered a new species and suggests the name Stomolophus yaquilli, in reference to the indigenous community that lives in the species distribution area.
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Affiliation(s)
| | | | | | | | - Adriana Muhlia-Almazán
- Centro de Investigación en Alimentos y Desarrollo, A. C. (CIAD) Unidad Hermosillo, Carretera Gustavo Enrique Astiazarán Rosas, Sonora, Mexico
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Pascual-Torner M, Quesada V. Reply to Miglietta: Toward doing rigorous and innovative science with nonmodel organisms. Proc Natl Acad Sci U S A 2023; 120:e2217389120. [PMID: 36893278 PMCID: PMC10089189 DOI: 10.1073/pnas.2217389120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023] Open
Affiliation(s)
- Maria Pascual-Torner
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo33006, Spain
- Observatorio Marino de Asturias, Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Oviedo33006, Spain
| | - Víctor Quesada
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo33006, Spain
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Hasegawa Y, Watanabe T, Otsuka R, Toné S, Kubota S, Hirakawa H. Genome assembly and transcriptomic analyses of the repeatedly rejuvenating jellyfish Turritopsis dohrnii. DNA Res 2022; 30:6909006. [PMID: 36519838 PMCID: PMC9835754 DOI: 10.1093/dnares/dsac047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 11/16/2022] [Accepted: 11/24/2022] [Indexed: 12/23/2022] Open
Abstract
Only two hydromedusan species, Turritopsis dohrnii and T. sp., have exhibited experimental multiple-repeat life cycle reversion in the laboratory, which can be artificially induced by various means such as incubation with CsCl, heat shock, and mechanical damage with needles. In the present study, we constructed a genome assembly of T. dohrnii using Pacific Biosciences long-reads and Illumina short-reads, for which the genome DNA was extracted from 1,500 young medusae originated from a single clone. The total length of the draft genome sequence of T. dohrnii was 435.9 Mb (N50 length 747.2 kb). We identified 23,314 high-confidence genes and found the characteristics of RNA expression amongst developmental stages. Our genome assembly and transcriptome data provide a key model system resource that will be useful for understanding cyclical rejuvenation.
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Affiliation(s)
- Yoshinori Hasegawa
- To whom correspondence should be addressed. Tel: +81 438 52 3944. Fax: +81 438 52 3921. (Y.H); Tel: +81 438 52 3906. Fax: +81 438 52 3924. (H.H)
| | - Takashi Watanabe
- Department of Applied Genomics, Kazusa DNA Research Institute, Kisarazu, Chiba 292-0818, Japan
| | - Reo Otsuka
- Graduate School of Science and Engineering, Tokyo Denki University, Hatoyama, Saitama 350-0394, Japan
| | - Shigenobu Toné
- Graduate School of Science and Engineering, Tokyo Denki University, Hatoyama, Saitama 350-0394, Japan
| | - Shin Kubota
- Turritopsis Immortal Jellyfish Regenerative Biological Research/Experience Laboratory, Arita, Wakayama 643-0002, Japan
| | - Hideki Hirakawa
- To whom correspondence should be addressed. Tel: +81 438 52 3944. Fax: +81 438 52 3921. (Y.H); Tel: +81 438 52 3906. Fax: +81 438 52 3924. (H.H)
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Pascual-Torner M, Carrero D, Pérez-Silva JG, Álvarez-Puente D, Roiz-Valle D, Bretones G, Rodríguez D, Maeso D, Mateo-González E, Español Y, Mariño G, Acuña JL, Quesada V, López-Otín C. Comparative genomics of mortal and immortal cnidarians unveils novel keys behind rejuvenation. Proc Natl Acad Sci U S A 2022; 119:e2118763119. [PMID: 36037356 PMCID: PMC9459311 DOI: 10.1073/pnas.2118763119] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 07/06/2022] [Indexed: 12/13/2022] Open
Abstract
Turritopsis dohrnii is the only metazoan able to rejuvenate repeatedly after its medusae reproduce, hinting at biological immortality and challenging our understanding of aging. We present and compare whole-genome assemblies of T. dohrnii and the nonimmortal Turritopsis rubra using automatic and manual annotations, together with the transcriptome of life cycle reversal (LCR) process of T. dohrnii. We have identified variants and expansions of genes associated with replication, DNA repair, telomere maintenance, redox environment, stem cell population, and intercellular communication. Moreover, we have found silencing of polycomb repressive complex 2 targets and activation of pluripotency targets during LCR, which points to these transcription factors as pluripotency inducers in T. dohrnii. Accordingly, we propose these factors as key elements in the ability of T. dohrnii to undergo rejuvenation.
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Affiliation(s)
- Maria Pascual-Torner
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
- Observatorio Marino de Asturias, Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Dido Carrero
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - José G. Pérez-Silva
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Diana Álvarez-Puente
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - David Roiz-Valle
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Gabriel Bretones
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - David Rodríguez
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Daniel Maeso
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Elena Mateo-González
- Observatorio Marino de Asturias, Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Yaiza Español
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Guillermo Mariño
- Departamento de Biología Funcional, Facultad de Medicina, Universidad de Oviedo, Oviedo, 33006, Spain
- Autophagy and Metabolism Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, 33011, Spain
| | - José Luis Acuña
- Observatorio Marino de Asturias, Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Víctor Quesada
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
| | - Carlos López-Otín
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Ciberonc, Universidad de Oviedo, Oviedo, 33006, Spain
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Seo Y, Chae J, Ki JS. The complete mitochondrial genome of the hydrozoan jellyfish Turritopsis lata Lendenfeld, 1885 (Cnidaria; Hydrozoa; Anthoathecata) with molecular phylogenetic analysis. Mitochondrial DNA B Resour 2021; 6:1992-1993. [PMID: 34179492 PMCID: PMC8205065 DOI: 10.1080/23802359.2021.1938725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 05/27/2021] [Indexed: 11/20/2022] Open
Abstract
In this study, we sequenced and analyzed the complete mitochondrial genome (mtgenome) of the hydrozoan jellyfish Turritopsis lata. The mtgenome was a complete linear form (15,047 bp in length, 30.9% A, 42.1% T, 12.5% C, and 14.5% G), including 13 protein coding genes (PCGs) (cox1, cox2, cox3, atp6, atp8, nad1, nad2, nad3, nad4, nad4L, nad5, nad6, and cytb), 2 tRNAs (tRNAMet and tRNATrp), and 2 rRNAs (12S and 16S rRNA). The genome structure of the T. lata was completely identical to those of other species within the subclass Hydroidolina. In addition, our molecular phylogenetic analysis using 13 PCGs within hydrozoans showed that T. lata was the closest to Turritopsis dohrnii.
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Affiliation(s)
- Yoseph Seo
- Department of Biotechnology, Sangmyung University, Seoul, South Korea
| | - Jinho Chae
- Marine Environmental Research and Information Laboratory, Gunpo, South Korea
| | - Jang-Seu Ki
- Department of Biotechnology, Sangmyung University, Seoul, South Korea
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