Abstract
Summary Karol, K. G., Rodman, J. E., Conti, E. & Sytsma, K. J.: Nucleotide sequence of rbc L and phylogenetic relationships of Setchellanthus caeruleus (Setchellanthaceae). – Taxon 48: 303‐315. 1999. – ISSN 0040‐0262. The nucleotide sequence (1462 bases) from the chloroplast gene for the large subunit of ribulose‐l,5‐bisphosphate carboxylase/oxygenase (rbc L ) was utilised for the monotypic Mexican endemic genus Setchellanthus to assess its phylogenetic affinities. Phylogenetic analyses of rbc L sequence data robustly group Setchellanthus with other mustard oil producing plants included in Dahlgren's expanded order Capparales. Within this assemblage, maximum parsimony places Setchellanthus sister to a clade comprised of the North American family Limnanthaceae, the sister taxa Koeberlinia + Salvadora + Batis, and the core Capparales (Brassicaceae + Capparaceae, Gyrostemonaceae + Resedaceae, Pentadiplandraceae, and Tovariaceae). Maximum likelihood analyses reverse the relationship of Setchellanthus and Limnanthaceae, placing Setchellanthus sister to the Koeberlinia + Salvadora + Batis plus the core Capparales assemblage, with Limnanthaceae sister to these. The rbc L sequence of Setchellanthus possesses a putative stop codon ending at position 1440, twelve bases beyond the 1428 site usual for dicots. This extended 3' terminus is consistent within the expanded Capparales for a clade mat comprises the above‐named taxa. The position of Setchellanthus in the rbc L phylogram provides support for elevation of this unispecific genus to family rank, postulated in view of its unique morphological characters.
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Claims 5
Claim · model-written summary
rbcL sequences robustly group Setchellanthus with mustard oil producing plants in Capparales.
- Taxon
- SetchellanthusSetchellanthuse1
- Outcome
- robustly group Setchellanthus with other mustard oil producing plantse1
Verbatim
e1“Phylogenetic analyses of rbc L sequence data robustly group Setchellanthus with other mustard oil producing plants included in Dahlgren's expanded order Capparales”
Claim · model-written summary
Maximum parsimony places Setchellanthus as sister to a clade of the family Limnanthaceae.
- Taxon
- SetchellanthusSetchellanthuse2
- Outcome
- sister to a clade comprised of the North American family Limnanthaceaee2
Verbatim
e2“maximum parsimony places Setchellanthus sister to a clade comprised of the North American family Limnanthaceae”
Claim · model-written summary
Maximum likelihood reverses the relationship of Setchellanthus and Limnanthaceae.
- Taxon
- SetchellanthusSetchellanthuse3
- Outcome
- reverse the relationship of Setchellanthus and Limnanthaceaee3
Verbatim
e3“Maximum likelihood analyses reverse the relationship of Setchellanthus and Limnanthaceae, placing Setchellanthus sister to the Koeberlinia + Salvadora + Batis plus the core Capparales assemblage”
Claim · model-written summary
The Setchellanthus rbcL sequence has a putative stop codon at position 1440, twelve bases beyond the usual dicot site.
- Taxon
- SetchellanthusSetchellanthuse4
- Gene
- rbc Le4
- Outcome
- putative stop codone4
- Value
- 1440e4
Verbatim
e4“The rbc L sequence of Setchellanthus possesses a putative stop codon ending at position 1440, twelve bases beyond the 1428 site usual for dicots”
Claim · model-written summary
The phylogenetic position supports elevating Setchellanthus to family rank.
- Taxon
- SetchellanthusSetchellanthuse5
- Outcome
- elevation of this unispecific genus to family ranke5
Verbatim
e5“The position of Setchellanthus in the rbc L phylogram provides support for elevation of this unispecific genus to family rank”