Comparative Morphology and Molecular Systematics of African Podostemaceae‐Podostemoideae, with Emphasis on Dicraeanthus and Ledermanniella from Cameroon
Comparative Morphology and Molecular Systematics of African Podostemaceae‐Podostemoideae, with Emphasis on Dicraeanthus and Ledermanniella from Cameroon
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非洲 Podostemaceae-Podostemoideae 的比较形态学和分子系统学，重点是来自喀麦隆的 Dicraeanthus 和 Ledermanniella
DOI：
10.1086/509607
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发表时间：
2007
影响因子：
2.3
通讯作者：
R. Rutishauser
中科院分区：
文献类型：
--
作者：
P. Moline;M. Thiv;G. Ameka;J. Ghogue;E. Pfeifer;R. Rutishauser
Podostemaceae（真双子叶植物，Malpighiales）适应于表现出明显的高-低水季节性的河流，主要是在热带地区。它们附着在水下的岩石上，有带状或甲壳状的绿色根，像地毯一样覆盖在基底上。显著的根背腹导致缺乏根冠的盘状结壳。非洲Podostemoideae显示出一系列令人困惑的形式，这些形式是其他开花植物所不知道的，例如（i）具有两个鞘的基部的叶子（例如，Ledermanniella linearifolia），（ii）具有重复茎杯的模块化茎构造（Ledermanniella ledermannii），（iii）花沿着茎的内源起源（Dicraeanthus africanus），和（iv）叶附生花（Ledermanniella letouzeyi）。非洲podostemoids特有的重要形态转变包括从直立到倒置的花在佛焰苞和单室子房通过隔膜损失产生的转变。新的matK序列数据和新的形态学数据的8个非洲Podostemaceae种属Dicraeanthus，Djinga，和Ledermanniella与以前发表的序列相结合，代表所有主要群体测试的家庭中的非洲类群的位置。所有研究的非洲大陆的podostemoids都形成了一个分支，是马达加斯加的Endocaulos和Thelethylax属的姐妹。这个非洲-马达加斯加谱系的姐妹分支是包括所有亚洲的Podostemoids和美洲属Podostemum，而所有其他新世界的Podostemoids和Tristichoideae亚科都是更基础的。
The Podostemaceae (eudicots, Malpighiales) are adapted to rivers that exhibit distinct high‐low water seasonality, mainly in the tropics. They attach to submerged rocks with ribbonlike or crustose green roots that cover the substrate like a carpet. Pronounced root dorsiventrality resulted in disklike crusts lacking root caps. African Podostemoideae show a bewildering array of forms not known from other flowering plants, such as (i) foliage leaves having a basis with two sheaths (e.g., Ledermanniella linearifolia), (ii) modular shoot construction with repeated stem cups (Ledermanniella ledermannii), (iii) endogenous origin of flowers along stems (Dicraeanthus africanus), and (iv) epiphyllous flowers (Ledermanniella letouzeyi). Important morphological transformations specific to African podostemoids include a shift from erect to inverted flowers in the spathella and unilocular ovaries arising via septum loss. New matK sequence data and new morphological data for eight African Podostemaceae species of the genera Dicraeanthus, Djinga, and Ledermanniella are combined with previously published sequences representing all major groups to test the placement of the African taxa in the family. All podostemoids studied from continental Africa form a clade that is sister to the Madagascan genera Endocaulos and Thelethylax. The sister of this African‐Madagascan lineage is the clade comprising all Asian podostemoids and the American genus Podostemum, whereas all other New World podostemoids and the subfamily Tristichoideae are more basal.
一些足茎科植物根分生组织和根冠的比较解剖学及根背腹性的演化
DOI：
--
发表时间：
2006
期刊：
Amer. J. Bot. 93
影响因子：
--
作者：
Koi;S.
通讯作者：
S.
影响因子：
1.6
作者：
Kato, M;Kita, Y;Koi, S
通讯作者：
Koi, S