AI Article Synopsis
- The study focuses on the role of satellite repeats in understanding the evolutionary relationships among grass species, specifically their contribution to the St genome in polyploid organisms.
- A comparative analysis of the repeatomes of closely related grass species revealed similar overall structures but highlighted distinct patterns in the abundance and localization of various retrotransposons and satellite repeats.
- The findings suggest that the analyzed species share a close evolutionary relationship, and the newly identified chromosome markers can aid in future population studies involving related wild species and hybrid forms.
Article Abstract
species play an important role among grasses, as they are the putative donors of the St genome in many polyploid species. Satellite repeats are widely used as a reliable tool for tracking evolutionary changes because they are distributed throughout the genomes of plants. The aim of our work is to perform a comparative characterization of the repeatomes of the closely related species and , and was also included in the analysis. The overall repeatome structures of , , and were similar, with some individual peculiarities observed in the abundance of the (Ty1/) retrotransposons, and transposons, and satellites. Nine new satellite repeats that have been identified from the whole-genome sequences of and , as well as the CL244 repeat that was previously found in , were localized to the chromosomes of and . Four satellite repeats (CL69, CL101, CL119, CL244) demonstrated terminal and/or distal localization, while six repeats (CL82, CL89, CL168, CL185, CL192, CL207) were pericentromeric. Based on the obtained results, it can be assumed that and are closely related species, although they have individual peculiarities in their repeatome structures and patterns of satellite repeat localization on chromosomes. The evolutionary fate of the identified satellite repeats and their related sequences, as well as their distribution on the chromosomes of species, are discussed. The newly developed St genome chromosome markers developed in the present research can be useful in population studies of and ; auto- and allopolyploids that contain the St genome, such as , , , and ; and wide hybrids between wheat and related wild species.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10747672 | PMC |
| http://dx.doi.org/10.3390/plants12244169 | DOI Listing |
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