Evaluating the role of genome downsizing and size thresholds from genome size distributions in angiosperms

Abstract

Thresholds of genome size and monoploid number added to genome downsizing at species level simulations explain the observed means of angiosperm genome sizes, and monoploid number is important for determining the genome size mean at the genus level.

A trait‐based approach to predict population genetic structure in bees

“…As such, OU becomes a BM model when alpha equals zero (Butler & King, 2004;Hansen, 1997). A third model, Pagel's lambda (Freckleton et al, 2002;Revell, 2010), was also considered, but the likelihood profiles (Zenil-Ferguson, Ponciano, & Burleigh, 2016) of the parameter lambda did not peak for any of its values indicating its weak estimability (Ponciano, Burleigh, Braun, & Taper, 2012), and thus was excluded from further analyses.…”

Spreading Winge and flying high: The evolutionary importance of polyploidy after a century of study

“…The reconstruction and use of ancestral genomes will be of great value in understanding plant evolution, and Salse (2016) highlights the many promises and challenges of developing these resources. A second paper by Zenil‐Ferguson et al (2016, in this issue) employs a phylogenetic approach to test hypotheses of genome size evolution across ploidal levels. Their results provide new perspectives on the interaction between ploidal level, chromosome numbers, and genome size across angiosperms.…”

Impact of whole‐genome duplication events on diversification rates in angiosperms

“…The putative lag phase sometimes observed in analyses of WGD events and diversification rates (Soltis et al., ; Schranz et al., ) may reflect the process of diploidization (Dodsworth et al., ; Clarkson et al., ). Analyses of plant genomes have found potential evidence for heterogeneity in diploidization with differences in the rate of genome downsizing (Renny‐Byfield et al., ; De Smet et al., ; Zenil‐Ferguson et al., ) and genome reorganization after WGD (Soltis et al., ).…”