Plasticity of parental CENH3 incorporation into the centromeres in wheat × barley F1 hybrids.

Autor:	Mihók E; Centre for Agricultural Research, Hungarian Research Network, Martonvásár, Hungary.; Doctoral School of Plant Sciences, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary., Polgári D; Centre for Agricultural Research, Hungarian Research Network, Martonvásár, Hungary.; Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary.; Agribiotechnology and Precision Breeding for Food Security National Laboratory, Plant Biotechnology Section, Centre for Agricultural Research, Martonvásár, Hungary., Lenykó-Thegze A; Centre for Agricultural Research, Hungarian Research Network, Martonvásár, Hungary., Makai D; Centre for Agricultural Research, Hungarian Research Network, Martonvásár, Hungary.; Doctoral School of Plant Sciences, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary., Fábián A; Centre for Agricultural Research, Hungarian Research Network, Martonvásár, Hungary., Ali M; Doctoral School of Plant Sciences, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary.; Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary., Kis A; Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary., Sepsi A; Centre for Agricultural Research, Hungarian Research Network, Martonvásár, Hungary., Sági L; Centre for Agricultural Research, Hungarian Research Network, Martonvásár, Hungary.; Agribiotechnology and Precision Breeding for Food Security National Laboratory, Plant Biotechnology Section, Centre for Agricultural Research, Martonvásár, Hungary.
Jazyk:	angličtina
Zdroj:	Frontiers in plant science [Front Plant Sci] 2024 Jan 19; Vol. 15, pp. 1324817. Date of Electronic Publication: 2024 Jan 19 (Print Publication: 2024).
DOI:	10.3389/fpls.2024.1324817
Abstrakt:	Incorporating the centromere-specific histone H3 protein CENH3 into the centromeric nucleosomes is indispensable for accurate centromere function and balanced chromosome segregation in most eukaryotes, including higher plants. In the cell nuclei of interspecific hybrids, divergent centromeric DNAs cohabit and lead the corresponding parental chromosomes through the mitotic and meiotic cell divisions. Depending on the transmission of the parental chromosomes carrying the CENH3-encoding genes, CENH3 proteins from one or both parents may be present in these hybrids. The incorporation of parental CENH3 proteins into the divergent centromeres and their role in the chromosome elimination process in interspecific hybrids is still poorly understood. Here, we produced wheat × barley F1 hybrids that carried different combinations of barley chromosomes with genes encoding for either one (αCENH3) or both barley CENH3 protein variants (α- and βCENH3). We generated specific antibodies distinguishing between the wheat CENH3 proteins and barley αCENH3 and applied them together with FISH probes to detect the precise pattern of parental CENH3 deposition into the wheat and barley centromeric nucleosomes. Analysis of somatic and meiotic nuclei of the wheat × barley hybrids revealed the plasticity of the maternal (wheat) CENH3 proteins to become incorporated into the paternal (barley) centromeric nucleosomes. However, no evidence for paternal CENH3 plasticity was detected in this study. The significance of the unilateral centromere plasticity and possible patterns of CENH3 incorporation into centromeres in interspecific hybrids are discussed. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author(s) declared that they were an editorial board member of Frontiers, at the time of submission. This had no impact on the peer review process and the final decision. (Copyright © 2024 Mihók, Polgári, Lenykó-Thegze, Makai, Fábián, Ali, Kis, Sepsi and Sági.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu