Phylogenetic relationships in Primula L. and related genera (Primulaceae) based on noncoding chloroplast DNA
Phylogenetic relationships in Primula L. and related genera (Primulaceae) based on noncoding chloroplast DNA
复制标题
DOI：
10.1086/323444
复制
发表时间：
2001-11-01
影响因子：
2.3
通讯作者：
Conti, E
中科院分区：
文献类型：
--
作者：
Mast, AR;Kelso, S;Conti, E
我们对95个水稻品种的叶绿体DNA的trnL和rpl 16内含子进行了测序。报春花属（Primula L.）以重建该群体的系统发育史。在24个额外的分类群采样的所有属的代表，可能是嵌入报春花，以及外群从Maesaceae，Theophrastaceae，和Myrsinaceae。在最吝啬的树木的严格共识，报春花和属嵌入它（Dionysia Fenzl.，Sredinskya [Stein] Fedorov，Dodecatheon L.，和Cortusa L.）是以前怀疑嵌入报春花属（Hottonia L.，全缘蕨，和Soldanella L.）。在认识到这一点，两个新的无秩名称被定义为这些分支（/报春花和/Soldanella）。Dionysia与报春亚属Sphondylia（Duby）Rupr.关系密切，Sredinskya和报春花亚属报春花，十二色花和报春花亚属Auriculastrum Schott，和Cortusa和报春花亚属Auganthus（Link）Wendelbo。最大的亚属Aleuritia（Duby）Wendelbo分散在三个分支中，彼此不是最近的亲戚。粉叶报春f.根据权利要求1，Soldanelloides Pax，Denticulata Watt，Armerina Lindley和Aleuritia Duby被认为是帕拉或多系的，具有中等到强烈的支持。在整个过程中，我们认为显着的形态学和细胞学的变化，在报春花内的系统发育背景下，特别是因为它涉及到的密切关系，这里暗示Dionysia和报春花亚属Sphondylia之间。根据报春花属内卷叶羽状花序的两个独立起源，重新讨论了报春花属内卷叶羽状花序的同源性，认为Sphondylia亚属的羽状花序更适合于描述为卷叶羽状花序。
We sequenced the trnL and rpl16 introns of the chloroplast DNA from 95 of the ca. 425 species (30 of 37 sections, seven of eight subgenera) of Primula L. in order to reconstruct the phylogenetic history of the group. Among the 24 additional taxa sampled are representatives of all genera that are likely to be embedded in Primula, as well as outgroups from the Maesaceae, Theophrastaceae, and Myrsinaceae. In the strict consensus of the most parsimonious trees, Primula and the genera embedded in it (Dionysia Fenzl., Sredinskya [Stein] Fedorov, Dodecatheon L., and Cortusa L.) are sister to a clade of several genera previously suspected to be embedded in Primula (Hottonia L., Omphalogramma [Franchet] Franch., and Soldanella L.). In recognition of this, two new rankless names are defined for these clades (/Primula and /Soldanella). Close relationships are inferred between Dionysia and Primula subgenus Sphondylia (Duby) Rupr., Sredinskya and Primula subgenus Primula, Dodecatheon and Primula subgenus Auriculastrum Schott, and Cortusa and Primula subgenus Auganthus (Link) Wendelbo. The largest subgenus, Aleuritia (Duby) Wendelbo, is dispersed among three clades that are not each other's closest relatives. Primula sections Muscarioides Balf. f., Soldanelloides Pax, Denticulata Watt, Armerina Lindley, and Aleuritia Duby are resolved as para- or polyphyletic with moderate to strong support. Throughout, we consider the striking morphological and cytological variation seen in Primula within a phylogenetic context, particularly as it relates to the close relationship implied here between Dionysia and Primula subgenus Sphondylia. The homology of involute leaf vernation in Primula is reconsidered in light of its two independent origins, and we come to the conclusion that vernation in subgenus Sphondylia is better characterized as conduplicate.