Molecular phylogeny of Subtribe Artemisiinae (Asteraceae), including Artemisia and its allied and segregate genera.
Molecular phylogeny of Subtribe Artemisiinae (Asteraceae), including Artemisia and its allied and segregate genera.
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DOI：
10.1186/1471-2148-2-17
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发表时间：
2002-09-26
影响因子：
3.4
通讯作者：
Estes JR
中科院分区：
文献类型：
--
作者：
Watson LE;Bates PL;Evans TM;Unwin MM;Estes JR
菊花科的蒿亚族主要由18个亚洲属组成，包括艾草和艾草。这个亚族包括世界性的、风媒传粉的大蒿属，以及几个较小的属和绢兰属，它们共同组成了蒿科。青蒿属的边界和分类学界限以及这些小分离属的分布目前尚未解决。我们利用核糖体DNA的内部转录间隔（ITS），用简约性、似然性和贝叶斯标准分析构建了该亚族的分子系统发育。由此产生的树由三个主要分支组成，对应于辐射属（例如，大戟属和菊属），以及两个分支的蒿属。所有三个分支都有联合的和分离的属嵌入其中。这些数据支持一个广泛的蒿属概念，包括Neopallasia、Crossostephium、Filifolium、Seriphidium和Sphaeromeria。然而，系统发育将Elachanthemum、Kaschgaria和Stilnolepis排除在蒿科之外。此外，除了亚属蒿属（subg.）外，四个亚属的单属性也不被支持。Dracunculus。同质，盘状头状花序似乎平行出现了4到7次，失去了放射状小花。因此，头状花序形态并不是一个可靠的分类特征，而传统上头状花序形态一直被认为是一个决定性的特征。
Subtribe Artemisiinae of Tribe Anthemideae (Asteraceae) is composed of 18 largely Asian genera that include the sagebrushes and mugworts. The subtribe includes the large cosmopolitan, wind-pollinated genus Artemisia, as well as several smaller genera and Seriphidium, that altogether comprise the Artemisia-group. Circumscription and taxonomic boundaries of Artemisia and the placements of these small segregate genera is currently unresolved. We constructed a molecular phylogeny for the subtribe using the internal transcribed spacers (ITS) of nuclear ribosomal DNA analyzed with parsimony, likelihood, and Bayesian criteria. The resulting tree is comprised of three major clades that correspond to the radiate genera (e.g., Arctanthemum and Dendranthema), and two clades of Artemisia species. All three clades have allied and segregate genera embedded within each. The data support a broad concept of Artemisia s.l. that includes Neopallasia, Crossostephium, Filifolium, Seriphidium, and Sphaeromeria. However, the phylogeny excludes Elachanthemum, Kaschgaria, and Stilnolepis from the Artemisia-group. Additionally, the monophyly of the four subgenera of Artemisia is also not supported, with the exception of subg. Dracunculus. Homogamous, discoid capitula appear to have arisen in parallel four to seven times, with the loss of ray florets. Thus capitular morphology is not a reliable taxonomic character, which traditionally has been one of the defining characters.
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影响因子：
1.5
作者：
BLUST, MH;HOPKINS, TL
通讯作者：
HOPKINS, TL
影响因子：
10.7
作者：
Buckley, TR;Cunningham, CW
通讯作者：
Cunningham, CW
影响因子：
1.9
作者：
BALDWIN, BG;SANDERSON, MJ;DONOGHUE, MJ
通讯作者：
DONOGHUE, MJ
影响因子：
1.9
作者：
BLUST, MH;HOPKINS, TL
通讯作者：
HOPKINS, TL
DOI：
10.2307/2422084
发表时间：
1955-01-01
期刊：
AMER MIDLAND NAT
影响因子：
--
作者：
CRONQUIST, ARTHUR
通讯作者：
CRONQUIST, ARTHUR