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Developmental graphs comparison strategy for analysis of pattern formation and phylogeny.

Oksana Butuzova1, Nikolay Pakudin2, Andrey Minarsky2

  • 1BIN, St-Petersburg, Russia.

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|October 15, 2021
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Summary

This study introduces a novel method using developmental graphs to formalize embryogenesis, revealing insights into the relationship between developmental trends and morphological evolution across plant taxa.

Keywords:
BioinformaticsDevelopmental graphs (trees)Embryogenesis of angiospermsInception of morphological charactersPhylogenyTrees distance algorithm

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Area of Science:

  • Developmental Biology
  • Evolutionary Biology
  • Phylogenetics

Background:

  • Embryogenesis and final organism morphology are determined but lack clear phylogenetic correlation.
  • Unrelated taxa can share similar early embryogenesis, while cleavage patterns vary within taxa.

Purpose of the Study:

  • To develop a mathematical formalization of embryogenesis using developmental graphs.
  • To create an algorithm for comparing these developmental graphs and clustering them.
  • To analyze the relationship between developmental trends and morphological character evolution.

Main Methods:

  • Construction of developmental graphs (trees) to model embryogenesis.
  • Development of a specialized algorithm for comparing labeled developmental graphs.
  • Calculation of distances between developmental trees for clustering.
  • Analysis of cluster correspondence with morphological character inception.

Main Results:

  • A methodology for mathematically formalizing and comparing embryogenesis processes.
  • Clustering of developmental trees revealing relationships between different taxa.
  • Identification of specific interrelations between developmental trends and morphological structures.
  • Illustrative analysis on angiosperm species across various taxonomic ranks.

Conclusions:

  • The proposed developmental graph approach provides a framework for understanding evolutionary patterns in embryogenesis.
  • This method facilitates the analysis of how developmental processes influence morphological diversification.
  • The findings offer new perspectives on the phylogenetic decoupling of early development and final form.