New insights into the phylogeny of Spyridia (Ceramiales, Rhodophyta) species with uncinate spines, focusing on the structure of determinate branches
New insights into the phylogeny of Spyridia (Ceramiales, Rhodophyta) species with uncinate spines, focusing on the structure of determinate branches
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对具有钩刺的 Spyridia（Ceramiales、Rhodophyta）物种系统发育的新见解，重点关注确定分支的结构
DOI：
10.1080/09670262.2020.1840634
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发表时间：
2021
影响因子：
2.4
通讯作者：
Cho, Tae Oh
中科院分区：
文献类型：
--
作者：
Won, Boo Yeon;Fredericq, Suzanne;Cho, Tae Oh
对21个在有限侧枝上具钩刺的SpyridiaHarvey种的样品进行了形态学研究，重点研究了有限侧枝的结构，并对叶绿体编码的rbcL和核LSU rDNA序列进行了比较分析，以阐明它们的分类和系统发育。目前，世界上已知有四种具钩刺的Spyridiasspecies：S. alternans，S. cupressina、松杉S. horridula和S.催眠药其中，S.被认为是最常见的具有钩刺的物种。在这项研究中，我们表明，S。需要从S.刺孢孢Spyridia aculeatais的特征是：有限枝螺旋排列，有限枝不完全皮层化，有限枝基部裸露，有限枝节上仅有向顶皮层，在终末节和有限分枝的第一和第二节上有钩刺。在我们基于rbcL和LSU rDNA的分子分析中，虽然四个具钩刺的Spyridiasspecies在系统发育树上得到支持，但它们不是一个单系群。Spyridiais的钩刺特征被认为是一个多系特征。利用rbcL和LSU rDNA序列的系统发育分析表明，S. aculeataandS.催眠药因此，S. hypnoides可能仅限于印度洋，whereasS.本种广泛分布于大西洋，包括地中海和红海。具钩刺的Spyridiaspores，S. alternans是S.我们对其模式标本的详细形态学观察结果令人震惊。
Twenty-one samples belonging to species ofSpyridiaHarvey with uncinate (= hook-shaped) spines on determinate lateral branches were investigated for their morphology with a focus on the structure of determinate branches, and for comparative chloroplast-encodedrbcL and nuclear LSU rDNA sequence analysis to elucidate their taxonomy and phylogeny. Currently, fourSpyridiaspecies with uncinate spines are recognized worldwide:S. alternans,S. cupressina,S. horridulaandS. hypnoides. Of them,S. hypnoideshas been recognized as the most common species with uncinate spines. In this study, we show thatS. aculeataneeds to be resurrected fromS. hypnoides, and recognized as a distinct species based on samples from Israel, Red Sea, near the type locality.Spyridia aculeatais characterized by the spiral arrangement of determinate branches, incompletely corticated determinate branches, naked basal segment of determinate branches, by the presence of only acropetal cortication in the nodes of determinate branches, and by uncinate spines at the terminal node and on the first and second nodes of determinate branches. In our molecular analyses based onrbcL and LSU rDNA, although fourSpyridiaspecies with uncinate spines are supported on phylogenetic trees, they are not a monophyletic group. The feature of uncinate spines inSpyridiais recognized as a polyphyletic character. Our phylogenetic analysis usingrbcL and LSU rDNA sequences reveals high gene sequence divergence (6.8–7.0% forrbcL and 1.2–1.3% for LSU rDNA) between samples ofS. aculeataandS. hypnoides. Therefore, the distribution ofS. hypnoidesmay be restricted to the Indian Ocean, whereasS. aculeatais widely distributed in the Atlantic Ocean including the Mediterranean Sea and the Red Sea. AnotherSpyridiaspecies with uncinate spines,S. alternans, is recognized as a synonym ofS. horridulaby our detailed morphological observations of its type specimen.
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DOI：
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发表时间：
2009
期刊：
--
影响因子：
--
作者：
B. Thiers;B. Thiers;B. B. Čokić-B.
通讯作者：
B. Thiers;B. Thiers;B. B. Čokić-B.
影响因子：
1.1
作者：
M. J. Wynne
通讯作者：
M. J. Wynne
DOI：
--
发表时间：
1961
期刊：
影响因子：
--
作者：
M. Durairatnam
通讯作者：
M. Durairatnam
DOI：
--
发表时间：
1963
期刊：
影响因子：
--
作者：
M. Hommersand
通讯作者：
M. Hommersand
影响因子：
4.8
作者：
Callaway, RM;Kikodze, D;Khetsuriani, L
通讯作者：
Khetsuriani, L