Crusticorallina gen. nov., a nongeniculate genus in the subfamily Corallinoideae (Corallinales, Rhodophyta)
Crusticorallina gen. nov., a nongeniculate genus in the subfamily Corallinoideae (Corallinales, Rhodophyta)
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壳珊瑚属
DOI：
10.1111/jpy.12449
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发表时间：
2016
影响因子：
2.9
通讯作者：
P. Martone
中科院分区：
文献类型：
--
作者：
Katharine R Hind;P. Gabrielson;Cassandra P Jensen;P. Martone
18 S rDNA（SSU）基因序列的分子系统发育分析证实了Crusticorphina gen. nov.的位置Cortagoideae，第一个nongeniculate属在一个其他膝状体亚科。Crusticorphina与所有其他珊瑚属的区别在于以下一套形态解剖特征：（i）凹陷的、单孔的配子囊和双/四孢子囊的孕体，（ii）通过细胞融合而不是次生纹孔连接而连接的细胞，（iii）1或2个细胞层的上叶状体，（iv）占据总叶状体厚度的50%或更多的下叶状体，（v）伸长的分生细胞，和（vi）不存在胶质细胞。基于rbcL、psbA和COI-5 P序列识别出四个物种，C. Painei sp. nov.，属型C. adhaerens sp. nov.，C. nootkana sp. nov.和C. muricata comb. nov.，以前被称为假石叶藻。模式标本为Lithophyllum muricatum，C.在TRH中，muricata包含至少两个分类群，因此我们接受先前在UC中指定的选型标本，我们对其进行测序以确认其身份。Crusticorbia物种很难使用形态解剖学和/或栖息地特征进行区分，尽管在特定地点，一些物种可以通过形态解剖学，栖息地和地理学的组合进行区分。东北太平洋现在拥有六个珊瑚特有属，远远超过世界上任何其他地区。
Molecular phylogenetic analyses of 18S rDNA (SSU) gene sequences confirm the placement of Crusticorallina gen. nov. in Corallinoideae, the first nongeniculate genus in an otherwise geniculate subfamily. Crusticorallina is distinguished from all other coralline genera by the following suite of morpho‐anatomical characters: (i) sunken, uniporate gametangial and bi/tetrasporangial conceptacles, (ii) cells linked by cell fusions, not secondary pit connections, (iii) an epithallus of 1 or 2 cell layers, (iv) a hypothallus that occupies 50% or more of the total thallus thickness, (v) elongate meristematic cells, and (vi) trichocytes absent. Four species are recognized based on rbcL, psbA and COI‐5P sequences, C. painei sp. nov., the generitype, C. adhaerens sp. nov., C. nootkana sp. nov. and C. muricata comb. nov., previously known as Pseudolithophyllum muricatum. Type material of Lithophyllum muricatum, basionym of C. muricata, in TRH comprises at least two taxa, and therefore we accept the previously designated lectotype specimen in UC that we sequenced to confirm its identity. Crusticorallina species are very difficult to distinguish using morpho‐anatomical and/or habitat characters, although at specific sites, some species may be distinguished by a combination of morpho‐anatomy, habitat and biogeography. The Northeast Pacific now boasts six coralline endemic genera, far more than any other region of the world.
影响因子：
1.6
作者：
Silvestro, Daniele;Michalak, Ingo
通讯作者：
Michalak, Ingo