Molecular characterization of Chlamydomonas reinhardtii telomeres and telomerase mutants

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F19%3A00113265" target="_blank" >RIV/00216224:14740/19:00113265 - isvavai.cz</a>
Result on the web
<a href="https://www.life-science-alliance.org/content/2/3/e201900315" target="_blank" >https://www.life-science-alliance.org/content/2/3/e201900315</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.26508/lsa.201900315" target="_blank" >10.26508/lsa.201900315</a>

Result language
angličtina
Original language name
Molecular characterization of Chlamydomonas reinhardtii telomeres and telomerase mutants
Original language description
Telomeres are repeated sequences found at the end of the linear chromosomes of most eukaryotes and are required for chromosome integrity. Expression of the reverse-transcriptase telomerase allows for extension of telomeric repeats to counteract natural telomere shortening. Although Chlamydomonas reinhardtii, a photosynthetic unicellular green alga, is widely used as a model organism in photosynthesis and flagella research, and for biotechnological applications, the biology of its telomeres has not been investigated in depth. Here, we show that the C. reinhardtii (TTTTAGGG)(n) telomeric repeats are mostly nondegenerate and that the telomeres form a protective structure, with a subset ending with a 3' overhang and another subset presenting a blunt end. Although telomere size and length distributions are stable under various standard growth conditions, they vary substantially between 12 genetically close reference strains. Finally, we identify CrTERT, the gene encoding the catalytic subunit of telomerase and show that telomeres shorten progressively in mutants of this gene. Telomerase mutants eventually enter replicative senescence, demonstrating that telomerase is required for long-term maintenance of telomeres in C. reinhardtii.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10611 - Plant sciences, botany

Project
<a href="/en/project/EF15_003%2F0000479" target="_blank" >EF15_003/0000479: Regulation and manipulation of plant meiosis</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)