SuperTree

SuperTree constructs a comprehensive phylogenetic supertree by synthesizing multiple input phylogenies to infer large-scale evolutionary relationships.

Key Features:

• Phylogeny synthesis: Integrates preexisting topologies from multiple published phylogenies into a single supertree.
• Matrix Representation with Parsimony (MRP): Represents input trees in a matrix format and infers a supertree using parsimony principles.
• MRP modification comparison: Evaluates alternative MRP modifications proposed by Baum and Ragan and by Purvis and reports similar outcomes among them.
• Bootstrap integration: Incorporates bootstrap support from source topologies to improve supertree accuracy, particularly enhancing the Baum and Ragan modification's concordance with combined-data analyses.
• Empirical large-scale reconstruction: Applied to the Poaceae (grass family) by synthesizing 55 published phylogenies to produce a supertree encompassing 403 taxa.
• Alternative to multigene analyses: Enables large-scale phylogenetic inference when combinable multigene sequence data are unavailable.

Scientific Applications:

• Macroevolutionary studies: Provides broad phylogenetic frameworks suitable for studying macroevolutionary patterns across taxa.
• Taxonomic classification: Informs taxonomic hypotheses and classification by assembling comprehensive phylogenetic hypotheses from disparate source trees.
• Comparative method evaluation: Facilitates comparison of MRP modifications and assessment of their agreement with combined-data analyses.
• Large-scale clade synthesis: Reconstructs extensive clade-level phylogenies such as the Poaceae supertree combining 55 studies and 403 taxa.
• Phylogenetics without combinable data: Supports phylogenetic reconstruction in scenarios where direct multigene analyses are impractical or impossible.

Methodology:

Encodes input trees using Matrix Representation with Parsimony (MRP) by constructing a matrix from source topologies and applying parsimony to infer the supertree; compares Baum and Ragan and Purvis MRP modifications and can incorporate bootstrap support from preexisting topologies.