Publications by authors named "Marcelinus R Hatorangan"
Article Synopsis
- Hybrid seed lethality is a significant reproductive barrier in flowering plants, hindering gene flow and complicating plant breeding due to issues with the endosperm tissue that nourishes the embryo.
- The study in the genus Capsella indicates that the effective ploidy (or endosperm balance number) is correlated with the number and expression of paternally expressed genes (PEGs), suggesting that gene dosage imbalances contribute to hybrid seed failure.
- The research found a trend where species with a history of self-fertilization have fewer PEGs and lower effective ploidy, implicating transposable elements and their epigenetic regulation in the evolution of reproductive barriers among these plant species.
Genomic imprinting is an epigenetic phenomenon occurring in mammals and flowering plants that causes genes to adopt a parent-of-origin-specific mode of expression. While the imprinting status of genes is well conserved in mammals, clear estimates for the degree of conservation were lacking in plants. We therefore analyzed the genome-wide imprinting status of Capsella rubella, which shared a common recent ancestor with Arabidopsis thaliana ∼10 to 14 million years ago.
View Article and Find Full Text PDFThe transition to selfing in Capsella rubella accompanies its recent divergence from the ancestral outcrossing C. grandiflora species about 100,000 years ago. Whether the change in mating system was accompanied by the evolution of additional reproductive barriers that enforced species divergence remained unknown.
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