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首页> 外文期刊>Annals of Botany >Morphological evolution in the variable resin-producing Detarieae (Fabaceae): do morphological characters retain a phylogenetic signal?
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Morphological evolution in the variable resin-producing Detarieae (Fabaceae): do morphological characters retain a phylogenetic signal?

机译：可变产树脂的古菌科（Fabaceae）的形态进化：形态特征是否保留了系统发生信号？

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BACKGROUND AND AIMS: Previous molecular phylogenetic studies disagree with the informal generic-level taxonomic groups based on morphology. In this study morphological characters in the caesalpinioid clade Detarieae are evaluated within a phylogenetic framework as a means of better understanding phylogenetic relationships and morphological evolution. METHODS: Morphological characters were observed and scored for representative species of Detarieae focusing on the resin-producing genera. Phylogenetic analyses were carried out with morphological characters alone and then combined with DNA sequences. KEY RESULTS: Despite a high level of homoplasy, morphological data support several clades corresponding to those recovered in molecular phylogenetic analyses. The more strongly supported clades are each defined by at least one morphological synapomorphy. Several characters (e.g. apetaly) previously used to define informal generic groups evolved several times independently, leading to the differences observed with the molecular phylogenetic analyses. Although floral evolution is complex in Detarieae some patterns are recovered. CONCLUSIONS: New informal taxonomic groupings are proposed based on the present findings. Floral evolution in the diverse Detarieae clade is characterized by a repeated tendency toward zygomorphy through the reduction of lateral petals and toward complete loss of petals.
机译：背景与目的：以前的分子系统发育研究与基于形态学的非正式通用分类学团体不同。在这项研究中，在系统发育框架内评估了ca柏类进化枝果蝇的形态特征，以更好地了解系统发育关系和形态进化。方法：观察到的德氏菌属代表性物种的形态特征并对其评分，重点是产树脂的属。系统发育分析仅通过形态特征进行，然后与DNA序列结合。关键结果：尽管同质体水平很高，形态学数据仍支持一些进化枝，这些进化枝对应于分子系统发育分析中回收的进化枝。支撑更强的进化枝各自由至少一种形态突触定义。以前用来定义非正式通用组的几个字符（例如apetaly）独立演化了几次，从而导致在分子系统发育分析中观察到的差异。尽管在Detarieae中花的进化很复杂，但仍可以恢复某些模式。结论：基于目前的发现提出了新的非正式分类学分组。在不同的Detarieae进化枝中，花的进化特征是通过减少侧向花瓣和完全丧失花瓣而向合子化的反复趋势。

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