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Telomerase activity is not related to life history stage in the jellyfish Cassiopea sp
- Source :
- Comparative biochemistry and physiology. Part A, Molecularintegrative physiology. 152(2)
- Publication Year :
- 2008
-
Abstract
- The polyp (scyphistoma) of the jellyfish Cassiopea sp. can be maintained in culture for a long time, as polyps repeatedly reproduce asexually via formation of vegetative buds or propagules. The medusa, which is the sexually reproducing stage, typically has a relatively short life span. As a first step to understand the difference in life spans of the polyp and medusa stages of Cassiopea sp., we measured telomerase activity in different life cycle stages. We found telomerase activity in tissues of aposymbiotic polyps and propagules and symbiotic ephyrae (newly budded medusae) and adult medusae. No significant difference in telomerase activity was found between polyps and the bell region of the medusae. The cloned elongation products of the stretch PCR contained the TTAGGG repeats suggesting that the jellyfish has the ‘vertebrate’ telomere motif (TTAGGG) n . This is the first study to show that somatic tissues of both polyp and medusa stages of a cnidarian had telomerase activity. Telomerase activity in somatic tissues may be related to the presence of multipotent interstitial cells and high regenerative capacity of cnidarians.
- Subjects :
- Cnidaria
Jellyfish
Telomerase
Life Cycle Stages
biology
Scyphozoa
Physiology
Ecology
Somatic cell
Vertebrate
Cassiopea
Telomere
biology.organism_classification
Biochemistry
Polymerase Chain Reaction
Cell biology
Aposymbiotic
biology.animal
Animals
Cell Lineage
Molecular Biology
Cell Proliferation
Repetitive Sequences, Nucleic Acid
Subjects
Details
- ISSN :
- 15314332
- Volume :
- 152
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Comparative biochemistry and physiology. Part A, Molecularintegrative physiology
- Accession number :
- edsair.doi.dedup.....6454dedbd461be525b00c36d0200191c