Softparsmap

SoftParsMap maps gene trees onto species trees using a soft parsimony approach to minimize inferred gene duplication and loss events and reconcile conflicting gene tree topologies.

Key Features:

• Soft Parsimony Algorithm: Implements a soft parsimony algorithm that minimizes inferred gene duplications and losses while accommodating uncertainty in tree topology.
• Mapping Gene Trees to Species Trees: Maps multiple gene trees onto a species tree to reconcile conflicting evolutionary histories across loci.
• Rooting of Unrooted Trees: Roots unrooted gene trees to establish the directionality of evolutionary events.
• Removal of In-Paralogues: Identifies and removes in-paralogues (lineage-specific duplicates) to reduce misleading redundancy in analyses.
• Handling Uncertain Branches: Modifies or collapses weakly supported or uncertain branches to improve phylogenetic signal.
• Implementation: Implemented as a Java-based software package.

Scientific Applications:

• Phylogenetics: Constructing species trees from multiple gene trees to infer speciation and gene duplication events.
• Evolutionary Biology: Characterizing the evolutionary dynamics of gene families, including the impact of gene duplication and loss on lineage diversification.
• Genomics: Resolving ambiguities in gene tree topologies to provide accurate phylogenetic frameworks for comparative genomic analyses across species.

Methodology:

Performs soft parsimony by minimizing inferred gene duplication and loss events while mapping gene trees onto a species tree, including rooting unrooted gene trees, identifying and removing in-paralogues, and modifying weakly supported branches.