18.4C: Whole-Genome Duplication

The sharp increase in the number of sequenced plant genomes has empowered investigation of key aspects of evolution by application of uniform techniques to taxa spanning hundreds of million years of divergence, including model and non-model, crop and non-crop, flowering and non-flowering, seed and non-seed, vascular and non-vascular, and unicellular and multicellular species.

Plant Duplicate Gene Database; Vanneste, Kevin, Baele, G. Understanding the mechanisms that generate duplicate gene copies and the subsequent dynamics among gene duplicates is vital because these investigations shed light on localized and genomewide aspects of evolutionary forces shaping intra-specific and inter-specific genome contents, evolutionary relationships, and interactions.

C: Whole-Genome Duplication - Biology LibreTexts

Sci Adv. New Phytologist. Review articles on this topic can be found at the bottom. A host plant genome Zizania latifolia after a century-long endophyte infection. Genome Biology. Extensive concerted evolution of rice paralogs and the road to regaining independence.

Furthermore, we assigned the genes in each orthogroup into each single species and acquired the repertoire of gene families for each species freely available on FigShare, https: Experimentally validate the adaptive nature of novel functions arising from WGD. The color of circle represents the statistical significance of enriched GO terms. The underlying mutational event of duplication may be a conventional gene duplication mutation within a chromosome, or a larger-scale event involving whole chromosomes aneuploidy or whole genomes polyploidy.

In contrast, the frequency of tandem and proximal duplications showed no significant decrease over time, providing a continuous supply of variants available for adaptation to continuously changing environments. Primary objective: The distribution of C3 and C4 grasses in Australia in relation to climate. A comparison of photosynthetic characteristics of Encelia species possessing glabrous and pubescent leaves.

Divergence in expression between duplicated genes in Arabidopsis.

Genome Duplication & Polyploidy Van de Peer Lab

These results further highlight the significance of our findings on modeling network evolution and developing model-based methods for ancestral network reconstruction Navlakha and Kingsford ; Zhu and Nakhleh Branch length is not directly proportional to time scale. Figure 3. The rate of PPI evolution as a function of sequence divergence Recall the definitions of N t g and sh t g 1 , g 2 given previously.

Nature Reviews Genetics Genomics Proteomics Bioinformatics. Assess the role of whole genome duplications WGD as catalysts for adaptive evolution in vertebrates Secondary objectives: Not born equal: Functional divergence of duplicated genes formed by polyploidy during Arabidopsis evolution.

With a diploidized state restored soon after genome duplication, what is the raw material for adaptation in taxa that have abstained from genome duplication for long time periods?