Switch them off or not: selective rRNA gene repression in grasses
Jazyk angličtina Země Anglie, Velká Británie Médium print-electronic
Typ dokumentu časopisecké články, přehledy, práce podpořená grantem
PubMed
36764871
DOI
10.1016/j.tplants.2023.01.002
PII: S1360-1385(23)00021-3
Knihovny.cz E-zdroje
- Klíčová slova
- 35S rRNA genes, allopolyploidy, epigenetics, grasses, nucleolar dominance, regulation of gene expression,
- MeSH
- buněčné jadérko * genetika MeSH
- geny rRNA MeSH
- lipnicovité genetika MeSH
- organizátor jadérka * MeSH
- ribozomální DNA genetika MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- přehledy MeSH
- Názvy látek
- ribozomální DNA MeSH
Nucleolar dominance (ND) is selective epigenetic silencing of 35-48S rDNA loci. In allopolyploids, it is frequently manifested at the cytogenetic level by the inactivation of nucleolar organiser region(s) (NORs) inherited from one or several evolutionary ancestors. Grasses are ecologically and economically one of the most important land plant groups, which have frequently evolved through hybridisation and polyploidisation events. Here we review common and unique features of ND phenomena in this monocot family from cytogenetic, molecular, and genomic perspectives. We highlight recent advances achieved by using an allotetraploid model grass, Brachypodium hybridum, where ND commonly occurs at a population level, and we cover modern genomic approaches that decipher structural features of core arrays of NORs.
Citace poskytuje Crossref.org
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