Back to Search
Start Over
Switch them off or not: selective rRNA gene repression in grasses.
- Source :
-
Trends in plant science [Trends Plant Sci] 2023 Jun; Vol. 28 (6), pp. 661-672. Date of Electronic Publication: 2023 Feb 08. - Publication Year :
- 2023
-
Abstract
- 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.<br />Competing Interests: Declaration of interests The authors declare no conflict of interest.<br /> (Copyright © 2023 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1878-4372
- Volume :
- 28
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Trends in plant science
- Publication Type :
- Academic Journal
- Accession number :
- 36764871
- Full Text :
- https://doi.org/10.1016/j.tplants.2023.01.002