Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3DS, UK;
Am J Bot. 2000 Sep;87(9):1309-24.
Previous tribal classifications of Rhamnaceae have been based on fruit characters, resulting in the delimitation of large and otherwise heterogeneous groups. We evaluated the most recent classification with DNA sequences of two regions of the plastid genome, rbcL and trnL-F, from 42 genera of Rhamnaceae and representatives of the related families Elaeagnaceae, Barbeyaceae, Dirachmaceae, Urticaceae, Ulmaceae, Moraceae, and Rosaceae. The trnL-F trees have higher consistency and retention indices than the rbcL trees, and patterns of change in rbcL and trnL-F are compared. The closest relatives of Rhamnaceae are Dirachmaceae and Barbeyaceae, followed by the urticalean families. The plastid trees support the monophyly of the family and provide the basis for a new tribal classification. Three strongly supported clades are identified, but morphological characters could not be found to underpin a formal taxonomic description of these three clades as subfamilies. We therefore only recognize groups that are also defined by morphological characters. The biogeography of Rhamnaceae is discussed with reference to the molecular trees.
先前的鼠李科族分类是基于果实特征，导致了大的和其他异质群体的划分。我们评估了最新的分类，使用了来自 42 个鼠李科属和相关科的两个质体基因组区域的 DNA 序列，即 rbcL 和 trnL-F，包括 Elaeagnaceae、Barbeyaceae、Dirachmaceae、Urticaceae、Ulmaceae、Moraceae 和 Rosaceae。trnL-F 树比 rbcL 树具有更高的一致性和保留指数，并且比较了 rbcL 和 trnL-F 的变化模式。鼠李科最亲近的亲戚是 Dirachmaceae 和 Barbeyaceae，其次是荨麻科。质体树支持科的单系性，并为新的族分类提供了基础。鉴定出三个强烈支持的分支，但形态特征无法为这三个分支作为亚科提供正式的分类描述。因此，我们只承认也由形态特征定义的组。参考分子树讨论了鼠李科的生物地理学。
