Convergence in carnivorous pitcher plants reveals a mechanism for composite trait evolution

Chomicki, Guillaume; Burin, Gustavo; Busta, Lucas; Gozdzik, Jedrzej; Jetter, Reinhard; Mortimer, Beth; Bauer, Ulrike

doi:10.1126/science.ade0529

Cited by 12 publications

(2 citation statements)

References 48 publications

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“…The reuse of the same genetic program seen in some traits such as prickles may in part be due to their relative simplicity. Unlike composite traits ( 28 ), where selection has the potential to act on many different loci affecting many different organismal systems, convergent traits that arise from selection on fewer potentially relevant loci may exhibit greater genetic convergence by virtue of sheer probability. However, even traits of modest complexity, such as animal eye lenses composed of homomeric crystallins ( 29 ), can have many distinct genetic origins, indicating that trait complexity alone cannot not fully account for observed patterns of convergent evolution.…”

Section: Discussionmentioning

confidence: 99%

Convergent evolution of plant prickles is driven by repeated gene co-option over deep time

Satterlee,

Alonso,

Gramazio

et al. 2024

Preprint

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An enduring question in evolutionary biology concerns the degree to which episodes of convergent trait evolution depend on the same genetic programs, particularly over long timescales. Here we genetically dissected repeated origins and losses of prickles, sharp epidermal projections, that convergently evolved in numerous plant lineages. Mutations in a cytokinin hormone biosynthetic gene caused at least 16 independent losses of prickles in eggplants and wild relatives in the genusSolanum. Strikingly, homologs promote prickle formation across angiosperms that collectively diverged over 150 million years ago. By developing newSolanumgenetic systems, we leveraged this discovery to eliminate prickles in a wild species and an indigenously foraged berry. Our findings implicate a shared hormone-activation genetic program underlying evolutionarily widespread and recurrent instances of plant morphological innovation.

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Section: Discussionmentioning

confidence: 99%

Convergent evolution of plant prickles is driven by repeated gene co-option over deep time

Satterlee,

Alonso,

Gramazio

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The repeated use of the same genetic program seen in some traits, such as prickles, may in part be due to their relative simplicity. Unlike composite traits ( 34 ), where selection has the potential to act on many different loci affecting many different organismal systems, convergent traits that arise from selection on fewer potentially relevant loci may exhibit greater genetic convergence by virtue of sheer probability. However, even traits of modest complexity, such as animal eye lenses composed of homomeric crystallins ( 35 ), can have many distinct genetic origins, which indicates that trait complexity alone cannot fully account for observed patterns of convergent evolution.…”

Section: Discussionmentioning

confidence: 99%

Convergent evolution of plant prickles by repeated gene co-option over deep time

Satterlee,

Alonso,

Gramazio

et al. 2024

Science

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An enduring question in evolutionary biology concerns the degree to which episodes of convergent trait evolution depend on the same genetic programs, particularly over long timescales. In this work, we genetically dissected repeated origins and losses of prickles—sharp epidermal projections—that convergently evolved in numerous plant lineages. Mutations in a cytokinin hormone biosynthetic gene caused at least 16 independent losses of prickles in eggplants and wild relatives in the genus Solanum . Homologs underlie prickle formation across angiosperms that collectively diverged more than 150 million years ago, including rice and roses. By developing new Solanum genetic systems, we leveraged this discovery to eliminate prickles in a wild species and an indigenously foraged berry. Our findings implicate a shared hormone activation genetic program underlying evolutionarily widespread and recurrent instances of plant morphological innovation.

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Data‐driven guidelines for phylogenomic analyses using SNP data

Suissa,

De La Cerda,

Graber

et al. 2024

Appl Plant Sci

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PremiseThere is a general lack of consensus on the best practices for filtering of single‐nucleotide polymorphisms (SNPs) and whether it is better to use SNPs or include flanking regions (full “locus”) in phylogenomic analyses and subsequent comparative methods.MethodsUsing genotyping‐by‐sequencing data from 22 Glycine species, we assessed the effects of SNP vs. locus usage and SNP retention stringency. We compared branch length, node support, and divergence time estimation across 16 datasets with varying amounts of missing data and total size.ResultsOur results revealed five aspects of phylogenomic data usage that may be generally applicable: (1) tree topology is largely congruent across analyses; (2) filtering strictly for SNP retention (e.g., 90–100%) reduces support and can alter some inferred relationships; (3) absolute branch lengths vary by two orders of magnitude between SNP and locus datasets; (4) data type and branch length variation have little effect on divergence time estimation; and (5) phylograms alter the estimation of ancestral states and rates of morphological evolution.DiscussionUsing SNP or locus datasets does not alter phylogenetic inference significantly, unless researchers want or need to use absolute branch lengths. We recommend against using excessive filtering thresholds for SNP retention to reduce the risk of producing inconsistent topologies and generating low support.

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Convergence in carnivorous pitcher plants reveals a mechanism for composite trait evolution

Cited by 12 publications

References 48 publications

Convergent evolution of plant prickles is driven by repeated gene co-option over deep time

Convergent evolution of plant prickles is driven by repeated gene co-option over deep time

Convergent evolution of plant prickles by repeated gene co-option over deep time

Data‐driven guidelines for phylogenomic analyses using SNP data

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