2020
Two combinatorial patterns of telomerase histone marks in plants with canonical and non-canonical telomere repeats
ADAMUSOVÁ, Kateřina, Solmaz KOSHRAVI, Satoru FUJIMOTO, Andreas HOUBEN, Sachihiro MATSUNAGA et. al.Základní údaje
Originální název
Two combinatorial patterns of telomerase histone marks in plants with canonical and non-canonical telomere repeats
Autoři
ADAMUSOVÁ, Kateřina (203 Česká republika, domácí), Solmaz KOSHRAVI, Satoru FUJIMOTO, Andreas HOUBEN (276 Německo), Sachihiro MATSUNAGA, Jiří FAJKUS (203 Česká republika, domácí) a Miloslava FOJTOVÁ (203 Česká republika, garant, domácí)
Vydání
The Plant Journal, Blackwell Science, 2020, 0960-7412
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10611 Plant sciences, botany
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 6.417
Kód RIV
RIV/00216224:14740/20:00116206
Organizační jednotka
Středoevropský technologický institut
UT WoS
000506712300001
Klíčová slova anglicky
Arabidopsis thaliana; chromatin; epigenetics; histone modifications; Nicotiana; telomeres
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 10. 3. 2021 16:23, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
Telomeres, nucleoprotein structures at the ends of linear eukaryotic chromosomes, are crucial for the maintenance of genome integrity. In most plants, telomeres consist of conserved tandem repeat units comprising the TTTAGGG motif. Recently, non-canonical telomeres were described in several plants and plant taxons, including the carnivorous plant Genlisea hispidula (TTCAGG/TTTCAGG), the genus Cestrum (Solanaceae; TTTTTTAGGG), and plants from the Asparagales order with either a vertebrate-type telomere repeat TTAGGG or Allium genus-specific CTCGGTTATGGG repeat. We analyzed epigenetic modifications of telomeric histones in plants with canonical and non-canonical telomeres, and further in telomeric chromatin captured from leaves of Nicotiana benthamiana transiently transformed by telomere CRISPR-dCas9-eGFP, and of Arabidopsis thaliana stably transformed with TALE_telo C-3×GFP. Two combinatorial patterns of telomeric histone modifications were identified: (i) an Arabidopsis-like pattern (A. thaliana, G. hispidula, Genlisea nigrocaulis, Allium cepa, Narcissus pseudonarcissus, Petunia hybrida, Solanum tuberosum, Solanum lycopersicum) with telomeric histones decorated predominantly by H3K9me2; (ii) a tobacco-like pattern (Nicotiana tabacum, N. benthamiana, C. elegans) with a strong H3K27me3 signal. Our data suggest that epigenetic modifications of plant telomere-associated histones are related neither to the sequence of the telomere motif nor to the lengths of the telomeres. Nor the phylogenetic position of the species plays the role; representatives of the Solanaceae family are included in both groups. As both patterns of histone marks are compatible with fully functional telomeres in respective plants, we conclude that the described specific differences in histone marks are not critical for telomere functions.
Návaznosti
EF16_026/0008446, projekt VaV |
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LTC17077, projekt VaV |
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