| WANG Hongwei,GUO Shaoru,ZHANG Xiaoming,ZHAO Dan,ZHANG Wen,LUAN Rixiao. 2014. Re-identifying Grateloupia yangjiangensis (Rhodophyta, Halymeniaceae) based on morphological observations, life history and rbcL sequence analyses. Acta Oceanologica Sinica, 33(4):77－84 |
| Re-identifying Grateloupia yangjiangensis (Rhodophyta, Halymeniaceae) based on morphological observations, life history and rbcL sequence analyses |
| Re-identifying Grateloupia yangjiangensis (Rhodophyta, Halymeniaceae) based on morphological observations, life history and rbcL sequence analyses |
| Received:August 31, 2012 Revised:January 28, 2013 |
| DOI：10.1007/s13131-014-0450-5 |
| Key words:Grateloupia yangjiangensis Halymeniaceae Rhodophyta morphological observations life history rbcL |
| 中文关键词: Grateloupia yangjiangensis Halymeniaceae Rhodophyta morphological observations life history rbcL |
| 基金项目:The general program of the National Natural Science Foundation of China (NSFC) under contract Nos 30870161 and 31270251. |
| Author Name | Affiliation | E-mail | | WANG Hongwei | College of Life Sciences, Liaoning Normal University, Dalian 116081, China | kitamiwang@163.com | | GUO Shaoru | College of Life Sciences, Liaoning Normal University, Dalian 116081, China | | | ZHANG Xiaoming | College of Life Sciences, Liaoning Normal University, Dalian 116081, China | | | ZHAO Dan | College of Life Sciences, Liaoning Normal University, Dalian 116081, China | | | ZHANG Wen | College of Life Sciences, Liaoning Normal University, Dalian 116081, China | | | LUAN Rixiao | Dalian Natural History Museum, Dalian 116023, China | |
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| Abstract: |
| On the basis of morphological observations, life history and molecular phylogeny, Grateloupia yangjiangensis, which is similar to G. filicina, G. orientalis, G. catenata, and G. ramosissima in appearance, was re-examined. The results are as follows: (1) the auxiliary-cell ampullae of G. yangjiangensis were of Grateloupia type, thalli was fleshy and gelatinous in texture, and the erect axes were compressed; the cortex was 0.25-0.30 mm thick, consisting of five to seven outer layers, and there were five inner layers of triangular or stellate cells; (2) there was no filamentous stage in the development of the carpospores; (3) the ribulose-1,5-bisphosphate carboxylase/oxygenase gene (rbcL) sequence of four G. yangjiangensis examined showed that there was no intergeneric divergence among them, and for the phylogenetic tree, four sequences of G. yangjiangensis formed a single monophyletic subclade within the large Grateloupia clade of Halymeniaceae. In conclusion, G. yangjiangensis was a single species within the genus Grateloupia. This research provided criterion for identification and cultivation of G. yangjiangensis. |
| 中文摘要: |
| On the basis of morphological observations, life history and molecular phylogeny, Grateloupia yangjiangensis, which is similar to G. filicina, G. orientalis, G. catenata, and G. ramosissima in appearance, was re-examined. The results are as follows: (1) the auxiliary-cell ampullae of G. yangjiangensis were of Grateloupia type, thalli was fleshy and gelatinous in texture, and the erect axes were compressed; the cortex was 0.25-0.30 mm thick, consisting of five to seven outer layers, and there were five inner layers of triangular or stellate cells; (2) there was no filamentous stage in the development of the carpospores; (3) the ribulose-1,5-bisphosphate carboxylase/oxygenase gene (rbcL) sequence of four G. yangjiangensis examined showed that there was no intergeneric divergence among them, and for the phylogenetic tree, four sequences of G. yangjiangensis formed a single monophyletic subclade within the large Grateloupia clade of Halymeniaceae. In conclusion, G. yangjiangensis was a single species within the genus Grateloupia. This research provided criterion for identification and cultivation of G. yangjiangensis. |
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