Abstract
One of the major concerns of conservation biology is the knowledge on biodiversity. Many taxa have not yet been described and plant taxonomists are working hard to change this situation. This work presents a taxonomic overview of Solanum section Torva, from South Brazil, which still poorly understood. The section includes species known as “jurubeba” which are of considerable interest because of their pharmacological properties. Despite their higher economic value, it is difficult to identify the “jurubebas” correctly due to their taxonomic problems. A few questions on evolution concerning phylogenetic relationships in this section and other related sections of subgenus Leptostemonum were investigated to clarify the species circumscription and taxonomic issues. Eighty samples were analysed based on sequence variability of the internal transcribed spacers (ITS) of the nuclear ribosomal DNA, as well as the chloroplast intron trnL, trnL-trnF and trnS-trnG spacers. Five different matrixes were analyzed as the basis for a phylogenetic approach. The combined data from the chloroplast analyses formed well-supported trees. Solanum section Torva was proposed as a monophyletic group and it is close to S. melongena, S. jamaicense and S. sisymbriifolium.
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Acknowledgments
The authors thank Dr. Maria de Fátima Agra of Universidade Federal da Paraíba and Liliana Essi (M.Sc.) of Universidade Federal do Rio Grande do Sul for supplying the samples; and Dr. Giancarlo Pasquali (Universidade Federal do Rio Grande do Sul) for sequencing facilities. We also thank the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brazil), for providing the grants.
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Appendix
Appendix
Taxa, localities, vouchers of all species included in this study. Where no data are available about sampling places the sequences were get from GenBank.
Taxon-locality, voucher information
Solanum section Torva
Solanum paniculatum × Solanum guaraniticum—Porto Alegre—RS; L.A. Mentz, T.T Souza-Chies and R.B. Miz, 301. Solanum paniculatum × Solanum guaraniticum—Porto Alegre—RS; L.A. Mentz, T.T. Souza-Chies and R.B. Miz, 302. Solanum paniculatum × Solanum guaraniticum—Passo Fundo—RS, Farm Sementes and Cabanhas Butiá; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 309—ICN. Solanum paniculatum × Solanum guaraniticum—Viamão—RS, State Park of Itapuã; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, 305—ICN. Solanum paniculatum × Solanum guaraniticum—Carazinho—RS; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 311—ICN. Solanum paniculatum × Solanum guaraniticum—Venâncio Aires—RS; L.A. Mentz, E.L.C. Soares, R.B. Miz, 344—ICN. Solanum guaraniticum A. St.-Hil.—Antônio Prado—RS, Amarilho Road; T.T. Souza-Chies, 221. Solanum guaraniticum A. St.-Hil.—Monte Bonito, district of Pelotas—RS; T.T. Souza-Chies, 222. Solanum guaraniticum A. St.-Hil—Santa Cruz—RS, L.A. Mentz, E.L.C. Soares, R.B. Miz, 349. Solanum guaraniticum A. St.-Hil. (spiny leave)—Fontoura Xavier—RS, BR 386, km 276; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 336—ICN. Solanum guaraniticum A. St.-Hil. (spiny low stem)—Santa Cruz—RS; L.A. Mentz, E.L.C. Soares , R.B. Miz, 345a. Solanum guaraniticum A. St.-Hil.—Santa Cruz—RS; L.A. Mentz, E.L.C. Soares , R.B. Miz, 345b. Solanum guaraniticum A. St.-Hil.—Santa Cruz—RS; L.A. Mentz, E.L.C. Soares , R.B. Miz, 345c. Solanum guaraniticum A. St.-Hil. Coronel Barros—RS, Stop Lajeado do Tigre—BR 285 Km 476; L.A. Mentz, E.L.C. Soares , R.B. Miz, 339. Solanum guaraniticum A. St.-Hil. Santo Ângelo—RS; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 333. Solanum guaraniticum A. St.-Hil. Santa Cruz—RS; L.A. Mentz, E.L.C. Soares , R.B. Miz, 348. Solanum paniculatum L. Porto Alegre—RS; R.B. Miz, 101. Solanum paniculatum L.— Viamão—RS, State Park of Itapuã; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, 304—ICN. Solanum paniculatum L. Paraíba, Municipal district João Pessoa, Campus of the Federal University of the Paraíba; M.F. Agra, K. Nurit and I. Basílio, 6311. Solanum paniculatum L. Triunfo-RS; L.A. Mentz, E.L.C. Soares, R.B. Miz, 341—ICN. Solanum paniculatum L. Triunfo-RS; L.A. Mentz, E.L.C. Soares, R.B. Miz, 340—ICN. Solanum variabile Mart.—RS/SC, Cambará do Sul. “Serra do Faxinal”; L. Essi, Li 301. Solanum variabile Mart.—Lauro Muller—SC; L. Essi, Li 302. Solanum variabile Mart.—SC, Bom Jardim da Serra. Mountain of “Rio do Rastro”; L.Essi, Li 304. Solanum variabile Mart.—Urubici—SC; L. Essi, Li 319. Solanum variabile Mart.—Urubici—SC; L. Essi, Li 320.
Solanum section Acanthophora
Solanum atropurpureum Schrank.—Santa Cruz, RS; L.A. Mentz, E.L.C. Soares, R.B. Miz, 343—ICN. Solanum atropurpureum Schrank.—Santa Cruz, RS; LA. Mentz, E.L.C. Soares, R.B. Miz, 342—ICN. Solanum atropurpureum Schrank.—Passo Fundo, RS, Farm Sementes and Cabanhas Butiá; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 325a. ICN. Solanum atropurpureum Schrank.—Passo Fundo, RS, Farm Sementes and Cabanhas Butiá; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz. 325b—ICN. Solanum atropurpureum Schrank.—Ijuí, RS; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 317—ICN. Solanum aculeatissimum Jacq. Santa Cruz, RS; L.A. Mentz, E.L.C. Soares, R.B. Miz, 347—ICN. Solanum aculeatissimum Jacq.—Passo Fundo, RS, Farm Sementes and Cabanhas Butiá; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 319—ICN. Solanum aculeatissimum Jacq.—Passo Fundo, RS, Farm Sementes and Cabanhas Butiá; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 334—ICN. Solanum aculeatissimum Jacq.—Passo Fundo, RS, Farm Sementes and Cabanhas Butiá; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 313—ICN. Solanum aculeatissimum Jacq.—Passo Fundo, RS, Farm Sementes and Cabanhas Butiá; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 326a—ICN. Solanum aculeatissimum Jacq.—Passo Fundo, RS, Farm Sementes and Cabanhas Butiá; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 326b—ICN. Solanum viarum Dunal—Santa Cruz, RS; L.A. Mentz, E.L.C. Soares, R.B. Miz, 346—ICN. Solanum vaillantii Dunal—Passo Fundo, RS, Farm Sementes and Cabanhas Butiá; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, R.B. Miz, 310—ICN.
Outgroups in subgenus Leptostemonum
Solanum sisymbriifolium Lam.—Porto Alegre, RS, Campus of Vale—UFRGS; L.A. Mentz, E.L.C. Soares, R.B. Miz, 351—ICN.
Outgroups outside subgenus Leptostemonum (non-spiny)
Solanum mauritianum Scop.—Porto Alegre, RS, Campus of Vale—UFRGS; L.A. Mentz, E.L.C. Soares, R.B. Miz, 350-ICN. Solanum concinnum Schott ex Sendtn.—Viamão, RS, State Park of Itapuã; L.A. Mentz, E.L.C. Soares, M. Vignoli-Silva, G.S. Vendruscolo, 388—ICN.
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Miz, R.B., Mentz, L.A. & Souza-Chies, T.T. Overview of the phylogenetic relationships of some southern Brazilian species from section Torva and related sections of “spiny Solanum” (Solanum subgenus Leptostemonum, Solanaceae). Genetica 132, 143–158 (2008). https://doi.org/10.1007/s10709-007-9156-3
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DOI: https://doi.org/10.1007/s10709-007-9156-3