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首页> 外文期刊>Genetica >Overview of the phylogenetic relationships of some southern Brazilian species from section Torva and related sections of “spiny Solanum ” ( Solanum subgenus Leptostemonum , Solanaceae)
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Overview of the phylogenetic relationships of some southern Brazilian species from section Torva and related sections of “spiny Solanum ” ( Solanum subgenus Leptostemonum , Solanaceae)

机译：巴西南部一些物种的系统发育关系概述，该物种来自托尔瓦部分和“多刺茄属”（茄科茄属亚科，茄科）

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摘要

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.
机译：保护生物学的主要关注之一是关于生物多样性的知识。尚未描述许多分类单元，植物分类学家正在努力改变这种状况。这项工作提供了对巴西南部茄属节Torva的分类学概述，至今仍知之甚少。本节包括称为“ jurubeba”的物种，由于其药理特性而引起了人们的极大兴趣。尽管它们具有较高的经济价值，但由于它们的分类学问题，很难正确地识别“枣”。研究了关于本部分和其他相关主题的进化问题，以阐明物种的界限和分类学问题。根据核糖体DNA内部转录间隔子（ITS）以及叶绿体内含子trnL，trnL-trnF和trnS-trnG间隔子的序列变异性分析了80个样品。分析了五个不同的矩阵，作为系统发生方法的基础。叶绿体分析的综合数据形成了良好支持的树木。茄节节Torva被认为是一个单系统群体，它与S. melongena，S。jamaicense和S. sisymbriifolium接近。

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