Abstract
Abstract Tribe Crotalarieae is a large and diverse group of papilionoid legumes that largely occur in Africa. A systematic study of generic relationships within the tribe was undertaken using nucleotide sequences from the internal transcribed spacer (ITS) of nuclear ribosomal DNA, the plastid gene rbcL, and morphological data. The Crotalarieae are supported strongly as monophyletic and sister to the tribe Genisteae. Lebeckia, Lotononis, and Wiborgia are all paraphyletic in the molecular analyses and morphological data support the division of Lebeckia into three more natural genera (one of which includes the monotypic North African Spartidium). Four major lineages were identified within the tribe based on sequence data: the “Cape” group, comprising Aspalathus, Lebeckia, Rafnia, Spartidium, and Wiborgia; the Lotononis group, comprising Lotononis pro parte, Pearsonia, Robynsiophyton, and Rothia; a group comprising Lotononis section Leptis, L. section Listia, and allies; and the Crotalaria group, comprising Bolusia, Crotalaria, and Lotononis hirsuta (Lotononis section Euchlora). Morphological analysis yields a similar topology, except that Lotononis is monophyletic if L. hirsuta were excluded. When the molecular and morphological data sets are combined, the same major clades are retrieved as in the molecular analysis, with the notable exception that Lotononis and Lebeckia senso stricto are supported as monophyletic. The results from this study have important implications for the classification of the tribe Crotalarieae and present an important step towards a natural and phylogenetic generic classification for the tribe.
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Claims 10
Claim · model-written summary
Crotalarieae are strongly supported as monophyletic and sister to Genisteae.
- Taxon
- CrotalarieaeCrotalarieaee0
- Outcome
- monophyletic and sister to the tribe Genisteaee0
Verbatim
e0“The Crotalarieae are supported strongly as monophyletic and sister to the tribe Genisteae.”
Claim · model-written summary
Molecular analyses find Lebeckia paraphyletic.
- Outcome
- paraphyletice0
_(32709919341).jpg?width=60){kind=small}
LebeckiaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
_(32709919341).jpg?width=500)
Verbatim
e0“Lebeckia, Lotononis, and Wiborgia are all paraphyletic in the molecular analyses”
Claim · model-written summary
Molecular analyses find Lotononis paraphyletic.
- Outcome
- paraphyletice0
LotononisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lebeckia, Lotononis, and Wiborgia are all paraphyletic in the molecular analyses”
Claim · model-written summary
Molecular analyses find Wiborgia paraphyletic.
- Outcome
- paraphyletice0
WiborgiaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lebeckia, Lotononis, and Wiborgia are all paraphyletic in the molecular analyses”
Claim · model-written summary
Morphological data support dividing Lebeckia into three more natural genera, including one with Spartidium.
- Outcome
- division of Lebeckia into three more natural generae0
- Qualifier
- one of which includes the monotypic North African Spartidiume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“morphological data support the division of Lebeckia into three more natural genera (one of which includes the monotypic North African Spartidium)”
Claim · model-written summary
Sequence data identify four major lineages within Crotalarieae.
- Taxon
- CrotalarieaeCrotalarieaee1
- Outcome
- Four major lineagese0
Verbatim
e0“Four major lineages were identified within the tribe based on sequence data: the “Cape” group, comprising Aspalathus, Lebeckia, Rafnia, Spartidium, and Wiborgia; the Lotononis group, comprising Lotononis pro parte, Pearsonia, Robynsiophyton, and Rothia; a group comprising Lotononis section Leptis, L. section Listia, and allies; and the Crotalaria group, comprising Bolusia, Crotalaria, and Lotononis hirsuta (Lotononis section Euchlora).”
e1“Tribe Crotalarieae”
Claim · model-written summary
Morphological analysis yields a similar topology, with Lotononis monophyletic if L. hirsuta is excluded.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Morphological analysis yields a similar topology, except that Lotononis is monophyletic if L. hirsuta were excluded.”
Claim · model-written summary
Combining molecular and morphological data retrieves the same major clades as molecular analysis.
- Taxon
- CrotalarieaeCrotalarieaee1
- Outcome
- same major clades are retrievede0
- Comparator
- molecular analysise0
Verbatim
e0“When the molecular and morphological data sets are combined, the same major clades are retrieved as in the molecular analysis”
e1“Tribe Crotalarieae”
Claim · model-written summary
Combined molecular and morphological data support Lotononis as monophyletic.
- Outcome
- monophyletice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the notable exception that Lotononis and Lebeckia senso stricto are supported as monophyletic.”
Claim · model-written summary
Combined molecular and morphological data support Lebeckia senso stricto as monophyletic.
Verbatim
e0“with the notable exception that Lotononis and Lebeckia senso stricto are supported as monophyletic.”