Institutional Repository of Key Laboratory of Marine Ecology & Environmental Sciences, CAS
| Phylogenetic position and morphology of thecae and cysts of Scrippsiella (Dinophyceae) species in the East China Sea | |
| Gu, Haifeng1; Sun, Jun2; Kooistra, Wiebe H. C. F.3; Zeng, Runying1; Gu, HF, Third Inst Oceanog, Xiamen 361005, Peoples R China | |
| 2008-04-01 | |
| 发表期刊 | JOURNAL OF PHYCOLOGY
 |
| ISSN | 0022-3646 |
| 卷号 | 44期号:2页码:478-494 |
| 文章类型 | Article |
| 摘要 | Resting cysts of the marine phytoplanktonic dinoflagellate Scrippsiella spp. are encountered in coastal habitats and shallow seas all over the world. Identification of Scrippsiella species requires information on cyst morphology because the plate pattern of the flagellated cell is conserved. Cysts from sediments of the East China Sea were identified based on traits from both the cysts and the thecal patterns of germinated cells. Calcareous cysts belonged predominantly to S. trochoidea (F. Stein) A. R. Loebl., S. rotunda J. Lewis, and S. precaria Montresor et Zingone. The former two species also produced smooth and noncalcified cysts in the field. A new species, S. donghaienis H. Gu sp. nov, was obtained from six noncalcified cysts with organic spines. These cysts are spherical, full of pale white and greenish granules with a mesoepicystal archeopyle. The vegetative cells consist of a conical epitheca and a round hypotheca with a plate formula of po, x, 4', 3a, 7 '', 6c (5c + t), 6 s, 5''', 2'''' and are morphologically indistinguishable from S. trochoidea. Results of internal transcribed spacer (ITS) sequence comparisons revealed that S. donghaienis was distinct from the S. trochoidea complex and appeared nested within the Calciodinellum/Calcigonellum clade. Culture experiments showed that the presence of a red body in the cyst and the shape of the archeopyle were constant within cell lines from one generation to the next, while the morphological features of the cyst wall, such as calcification and spine shape, appeared to be phenotypically plastic.; Resting cysts of the marine phytoplanktonic dinoflagellate Scrippsiella spp. are encountered in coastal habitats and shallow seas all over the world. Identification of Scrippsiella species requires information on cyst morphology because the plate pattern of the flagellated cell is conserved. Cysts from sediments of the East China Sea were identified based on traits from both the cysts and the thecal patterns of germinated cells. Calcareous cysts belonged predominantly to S. trochoidea (F. Stein) A. R. Loebl., S. rotunda J. Lewis, and S. precaria Montresor et Zingone. The former two species also produced smooth and noncalcified cysts in the field. A new species, S. donghaienis H. Gu sp. nov, was obtained from six noncalcified cysts with organic spines. These cysts are spherical, full of pale white and greenish granules with a mesoepicystal archeopyle. The vegetative cells consist of a conical epitheca and a round hypotheca with a plate formula of po, x, 4', 3a, 7 '', 6c (5c + t), 6 s, 5''', 2'''' and are morphologically indistinguishable from S. trochoidea. Results of internal transcribed spacer (ITS) sequence comparisons revealed that S. donghaienis was distinct from the S. trochoidea complex and appeared nested within the Calciodinellum/Calcigonellum clade. Culture experiments showed that the presence of a red body in the cyst and the shape of the archeopyle were constant within cell lines from one generation to the next, while the morphological features of the cyst wall, such as calcification and spine shape, appeared to be phenotypically plastic. |
| 关键词 | Cysts Dinoflagellate East China Sea Its S. Precaria S. Rotunda S. Trochoidea Scrippsiella Donghaienis |
| 学科领域 | Plant Sciences ; Marine & Freshwater Biology |
| DOI | 10.1111/j.1529-8817.2008.00478.x |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000254991300021 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/1790 |
| 专题 | 海洋生态与环境科学重点实验室 |
| 通讯作者 | Gu, HF, Third Inst Oceanog, Xiamen 361005, Peoples R China |
| 作者单位 | 1.Third Inst Oceanog, Xiamen 361005, Peoples R China 2.Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Stn Zool A Dohrn, I-80121 Naples, Italy |
| 推荐引用方式 GB/T 7714 | Gu, Haifeng,Sun, Jun,Kooistra, Wiebe H. C. F.,et al. Phylogenetic position and morphology of thecae and cysts of Scrippsiella (Dinophyceae) species in the East China Sea[J]. JOURNAL OF PHYCOLOGY,2008,44(2):478-494. |
| APA | Gu, Haifeng,Sun, Jun,Kooistra, Wiebe H. C. F.,Zeng, Runying,&Gu, HF, Third Inst Oceanog, Xiamen 361005, Peoples R China.(2008).Phylogenetic position and morphology of thecae and cysts of Scrippsiella (Dinophyceae) species in the East China Sea.JOURNAL OF PHYCOLOGY,44(2),478-494. |
| MLA | Gu, Haifeng,et al."Phylogenetic position and morphology of thecae and cysts of Scrippsiella (Dinophyceae) species in the East China Sea".JOURNAL OF PHYCOLOGY 44.2(2008):478-494. |
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