Coalescent theory seeks to estimate the expectation of this time period and its variance. The probability that two lineages coalesce in the immediately preceding generation is the probability that they share a parental DNA sequence.

Jun 30, 2021 · Here, I explore the logic, justification, and implications of this recommendation for organelle phylogenomics. As in Gonçalves et al. (2019, 2020), much of the focus will be on the plastome of plants, particularly flowering plants.

We show that different coalescence methods yield discordant results and call attention to fundamental problems with the application of coalescence to deep phylogenetic questions such as the origin of land plants.

Feb 10, 2022 · The species tree paradigm that dominates current molecular systematic practice infers species trees from collections of sequences under assumptions of the multispecies coalescent (MSC), that is, that there is free recombination between the sequences and no (or very low) recombination within them.

Using recently available nuclear sequences from streptophyte algae, the multispecies coalescent model produces a congruent phylogeny that is robust to different data sets, in contrast to the conflicting phylogenies produced by the concatenation method.

Feb 16, 2018 · Understanding how multiple rate-limiting processes coalesce into a single E that characterizes metabolic responses to temperature, and how to best estimate E from unimodal data, remain important challenges.

We outline a model that generalizes allometric scaling theory to the entire plant by transitioning between distinct vascular domains. We show how the entire network can be optimized based solely on the maintenance of hydraulic resistance, by …

Nov 26, 2021 · Combining complementary imaging techniques and Arabidopsis genetics we reveal that, in chloroplasts, multiple starch granules initiate in stromal pockets between thylakoid membranes. These initials coalesce, then grow anisotropically to form lenticular granules.

Mar 21, 2025 · In this work, we have succeeded to image cellulose biosynthesis and its assembly into CMF during the entire process of cell wall regeneration for Arabidopsis protoplasts and studied the processes through which intertwined cellulose fibril networks develop at the single-cell level with high spatiotemporal resolution. To achieve this, we established an in vivo plant cell imaging platform based ...

Oct 13, 2017 · Time-lapse confocal microscopy has shown that coiled bodies are mobile organelles in plant cells. We have observed movements of coiled bodies in the nucleolus, in the nucleoplasm, and from the periphery of the nucleus into the nucleolus, which suggests a transport function for coiled bodies.