What question did this study set out to answer?

Assess whether combining multiple independent molecular datasets yields a more resolved and reliable phylogenetic tree than analyzing them separately in the family Solanaceae.

December 1, 1994Systematic Biology

Combining Data in Phylogenetic Systematics: An Empirical Approach Using Three Molecular Data Sets in the Solanaceae

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Authors

RORichard G. OlmsteadUniversity of California, Los Angeles JSJennifer A. SweereWashington State University

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Implication

Comparative phylogenetic analysis reveals increased tree resolution from combined chloroplast datasets in Solanaceae, indicating that total evidence overcomes weak gene conflicts.

Key Points

Assess whether combining multiple independent molecular datasets yields a more resolved and reliable phylogenetic tree than analyzing them separately in the family Solanaceae.
Analyzed sequence data from two chloroplast genes (ndhV and rbcL) alongside whole-chloroplast genome restriction site mapping.
Evaluated cladistic parsimony across 17 Solanaceae species and one outgroup taxon (Ipomoea) both separately and as a pooled total-evidence dataset.
Separate analyses showed broad congruence on major lineages but generated conflicting topologies within the subfamily Solanoideae where character support was limited.
Combined data analysis resolved conflicting branches and provided substantial phylogenetic support across Solanoideae, identifying the x = 12 chromosome clade as the most strongly supported group.

Cite This Study

Olmstead et al. (1994) studied this question.

synapsesocial.com/papers/6a158ece5347fbb1739ff61d https://doi.org/10.1093/sysbio/43.4.467

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Implication

Comparative phylogenetic analysis reveals increased tree resolution from combined chloroplast datasets in Solanaceae, indicating that total evidence overcomes weak gene conflicts.

Combining Data in Phylogenetic Systematics: An Empirical Approach Using Three Molecular Data Sets in the Solanaceae

Discussion

Member takes

Implication

Key Points

Cite This Study

Combining Data in Phylogenetic Systematics: An Empirical Approach Using Three Molecular Data Sets in the Solanaceae

Discussion

Member takes

Implication

Key Points

Cite This Study

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