Taxonomic revision of Gelidium tsengii and Gelidium honghaiwanense sp. nov. (Gelidiales, Rhodophyta) from China based upon molecular and morphological data analyses
Taxonomic revision of Gelidium tsengii and Gelidium honghaiwanense sp. nov. (Gelidiales, Rhodophyta) from China based upon molecular and morphological data analyses
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石花菜和红海湾石花菜分类学修订。
DOI：
10.1007/s00343-017-5340-1
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发表时间：
2017-01
影响因子：
--
通讯作者：
Guangce Wang
中科院分区：
文献类型：
--
作者：
Xulei Wang;Bangmei Xia;Antonella Bottalico;Guangce Wang
中国剑齿虎与约翰氏剑齿虎的分类关系尚不明确。近20年来，它们一直被认为是不同的分类群，直到2002年，johnstonii被认为是g.t sengii的一个误用名称。在本研究中，利用最初归属于tsengii的植物标本馆标本和新鲜的tsengii标本来解决分类问题。在系统发育研究中，来自中国大亚湾的G. tsengii与来自墨西哥索诺拉的G. johnstonii形成了一个单系群，在rbcL和COI基因分析中得到了最大的支持，表明它们在遗传上是相同的。形态学研究表明，tsengii与johnstoni在分支模式、内部结构和结果器官上相似。因此，我们认为特森氏杆菌的半圆形轮廓不能再作为鉴别特征。根据《国际植物命名法》（International Code of Botanical Nomenclature）， tsengii被提议作为g.j johnstonii的同义词。根据形态和分子资料对广东红海湾胶属植物进行了描述。在营养结构上，其特征是扁平直立的叶，规则的2 - 3次分枝，羽状或互生，棍状终枝。生殖结构上，四分枝小枝分布在枝的顶端，四分枝小枝沿二级枝均匀分布。本研究阐明了广东tsengii和g.j johnstonii的关系，并为中国藻类区系增加了一个新的Gelidium种。
The taxonomic relationship of Chinese Gelidium tsengii and Gelidium johnstonii was ambiguous. For almost 20 years they have been regarded as distinct taxa and until 2002 G. johnstonii was considered as a misapplied name of G. tsengii. In this study, herbarium specimens that initially attributed to G. tsengii and fresh G. tsengii specimens were used to address the taxonomic issues. In phylogenetic studies, G. tsengii from Dayawan, China, near the type locality of G. tsengii and G. johnstonii from Sonora, Mexico, the type locality of G. johnstonii, formed a monophyletic group with maximum support in rbcL and COI genes analyses, indicating that they were genetically identical. In morphological studies, G. tsengii was similar to G. johnstonii in branching pattern, inner structures and fructiferous organs. Consequently, we considered that semi-circular outline of G. tsengii could no longer be treated as a discrimating feature. G. johnstonii had priority of publication and according to the International Code of Botanical Nomenclature, G. tsengii was proposed as a synonym of G. johnstonii. Gelidium honghaiwanense sp. nov. was described from Guangdong, China on the basis of morphological and molecular data. For vegetative structures, it was characterized by flattened upright frond, regular two-three times branches pinnate or alternate and clavate ultimate branchlets. For reproductive structures, the tetrasporangial sori were in the apical part of branches and the tetrasporangial branchlets were distichously distributed along second order branches. The present study clarified the relationship between G. tsengii and G. johnstonii from Guangdong and added a new Gelidium species to the Chinese algal flora.
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DOI：
10.5479/si.19382812.96
发表时间：
2014-11
期刊：
--
影响因子：
--
作者：
J. N. Norris
通讯作者：
J. N. Norris
影响因子：
1.6
作者：
D. T. Thomas;D. W. Freshwater
通讯作者：
D. T. Thomas;D. W. Freshwater
影响因子：
13.8
作者：
Jeanmougin, F;Thompson, JD;Gibson, TJ
通讯作者：
Gibson, TJ
影响因子：
3.2
作者：
K. Kim;G. Gerung;S. Boo
通讯作者：
K. Kim;G. Gerung;S. Boo
影响因子：
0.7
作者：
Grusz, Amanda L.;Freshwater, D. Wilson
通讯作者：
Freshwater, D. Wilson