Publications by authors named "John Seymour Pat Heslop-Harrison"
In silico Characterization of Satellitomes and Cross-Amplification of Putative satDNAs in Two Species of the Hypostomus ancistroides Complex (Siluriformes, Loricariidae).
Cytogenet Genome Res
October 2024
Introduction: The mapping of the satellite DNA on chromosomes is vital to understanding the distribution and evolution of repetitions in the genome since these chromosomal studies have shown the origin, evolutionary mode, and function of repetitive sequences. This study aimed to prospect the satellitome and determine its location in the genome of two cryptic species of Hypostomus, H. aff.
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- - The study investigates the genomic similarities and differences within the BOP clade of the Poaceae family, particularly focusing on the genomes of rice, Brachypodium, and various diploid species in the tribe Aveneae, revealing significant genomic expansions and structural variations.
- - Findings show that Avena chromosomes experienced a ten to fifteen-fold increase in size, characterized by uniform expansions, conserved gene block arrangements, and notable translocations of gene-rich segments during speciation, indicating deep evolutionary relationships.
- - This research enhances understanding of evolutionary processes in the BOP clade, offering insights that can aid in biodiversity assessment, the creation of a comprehensive pangenome, and utilizing genomic diversity for breeding initiatives in grass species.
We isolated and characterized different classes of transposable DNA elements in oil palm (Elaeis guineensis) plants grown from seed, and plants regenerated from tissue culture that show mantling, an abnormality leading to flower abortion. Using PCR assays, reverse transcriptase fragments belonging to LINE-like and gypsy-like retroelements and transposase fragments of En/Spm transposons were cloned. Sequence analysis revealed the presence of a major family of LINEs in oil palm, with other diverged copies.
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