Systematic Phylogenomics: Reconstructing the Tree of Life in the Genomic Era
Abstract: Plant systematics has transitioned from a discipline based primarily on morphology and single-gene sequences to "Phylogenomics", utilizing whole-genome and transcriptomic data. This paper explores the evolutionary history of land plants (Embryophytes), focusing on the critical transitions from bryophytes to tracheophytes and the explosive radiation of angiosperms during the Cretaceous. We discuss the impact of Whole Genome Duplication (WGD) events on plant diversification and the resolution of long-standing "recalcitrant" nodes in the Tree of Life using High-Throughput Sequencing (HTS). Special attention is given to the APG IV (Angiosperm Phylogeny Group) system and the emerging use of Artificial Intelligence in automated botanical identification and phylogenetic mapping.
Keywords: Phylogenomics, Plant Systematics, Whole Genome Duplication, Angiosperm Evolution, HTS, APG IV, Molecular Clocks
How to Cite?: Lipika Mehar, "Systematic Phylogenomics: Reconstructing the Tree of Life in the Genomic Era", Volume 15 Issue 2, February 2026, International Journal of Science and Research (IJSR), Pages: 825-826, https://www.ijsr.net/getabstract.php?paperid=SR26212183728, DOI: https://dx.doi.org/10.21275/SR26212183728