Ontogeny reversal and phylogenetic analysis of Turritopsis sp.5 (Cnidaria, Hydrozoa, Oceaniidae), a possible new species endemic to Xiamen, China
Li, Jun-yuan1,2; Guo, Dong-hui3; Wu, Peng-cheng3; He, Li-sheng1; He, Li-sheng(Chinese Acad Sci, Inst Deep Sea Sci & Engn, Dept Life Sci, Sanya, Hainan, Peoples R China)
2018-01-08
Source PublicationPEERJ
Volume6
Contribution Rank第1完成单位
Abstract

Ontogeny reversal, as seen in some cnidarians, is an unprecedented phenomenon in the animal kingdom involving reversal of the ordinary life cycle. Three species of Turritopsis have been shown to be capable of inverted metamorphosis, a process in which the pelagic medusa transforms back into a juvenile benthic polyp stage when faced with adverse conditions. Turritopsis sp.5 is a species of Turritopsis collected from Xiamen, China which presents a similar ability, being able to reverse its life cycle if injured by mechanical stress. Phylogenetic analysis based on both 16S rDNA and cytochrome c oxidase subunit I (COI) genetic barcodes shows that Turritopsis sp.5 is phylogenetically clustered in a clade separate from other species of Turritopsis. The genetic distance between T. sp.5 and the Japanese species T. sp.2 is the shortest, when measured by the Kimura 2-Parameter metric, and the distance to the New Zealand species T. rubra is the largest. An experimental assay on the induction of reverse development in this species was initiated by cutting medusae into upper and lower parts. We show, for the first time, that the two dissected parts have significantly different potentials to transform into polyps. Also, a series of morphological changes of the reversed life cycle can be recognised, including medusa stage, contraction stage I, contraction stage II, cyst, cyst with stolons, and polyp. The discovery of species capable of reverse ontogeny caused by unfavorable conditions adds to the available systems with which to study the cell types that contribute to the developmental reversal and the molecular mechanisms of the directional determination of ontogeny.

SubtypeArticle
KeywordTurritopsis Reverse Development Medusa Hydroid China
WOS HeadingsScience & Technology
DOI10.7717/peerj.4225
URL查看原文
Indexed BySCI
Language英语
WOS KeywordTurritopsis ; Reverse development ; Medusa ; Hydroid ; China ; Jellyfish
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000423133200003
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/5919
Collection深海科学研究部_深海生物学研究室_深海生物蛋白质组学及分子生物学研究组
Corresponding AuthorHe, Li-sheng(Chinese Acad Sci, Inst Deep Sea Sci & Engn, Dept Life Sci, Sanya, Hainan, Peoples R China)
Affiliation1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Dept Life Sci, Sanya, Hainan, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
3.Xiamen Univ, Coll Ocean & Earth Sci, Xiamen, Fujian, Peoples R China
Recommended Citation
GB/T 7714
Li, Jun-yuan,Guo, Dong-hui,Wu, Peng-cheng,et al. Ontogeny reversal and phylogenetic analysis of Turritopsis sp.5 (Cnidaria, Hydrozoa, Oceaniidae), a possible new species endemic to Xiamen, China[J]. PEERJ,2018,6.
APA Li, Jun-yuan,Guo, Dong-hui,Wu, Peng-cheng,He, Li-sheng,&He, Li-sheng.(2018).Ontogeny reversal and phylogenetic analysis of Turritopsis sp.5 (Cnidaria, Hydrozoa, Oceaniidae), a possible new species endemic to Xiamen, China.PEERJ,6.
MLA Li, Jun-yuan,et al."Ontogeny reversal and phylogenetic analysis of Turritopsis sp.5 (Cnidaria, Hydrozoa, Oceaniidae), a possible new species endemic to Xiamen, China".PEERJ 6(2018).
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