Variations in morphology and PSII photosynthetic capabilities during the early development of tetraspores of Gracilaria vermiculophylla (Ohmi) Papenfuss (Gracilariales, Rhodophyta)
文献类型：期刊论文
| 作者 | Xie, Xiujun1; Wang, Guangce1,2; Pan, Guanghua1; Gao, Shan1; Xu, Pu3; Zhu, Jianyi; Wang, G, Tianjin Univ Sci & Technol, Coll Marine Sci & Engn, Key Lab Marine Resources & Chem, Tianjin 300457, Peoples R China |
| 刊名 | BMC DEVELOPMENTAL BIOLOGY
 |
| 出版日期 | 2010-04-28 |
| 卷号 | 10页码:43 |
| 关键词 | Holmsella-australis Fine-structure Life-history Red Seaweed Alga Ultrastructure Lemaneiformis Gigartinales Systematics Furcellata |
| ISSN号 | 1471-213X |
| DOI | 10.1186/1471-213X-10-43 |
| 文献子类 | Article |
| 英文摘要 | Background: Red algae are primitive photosynthetic eukaryotes, whose spores are ideal subjects for studies of photosynthesis and development. Although the development of red alga spores has received considerable research attention, few studies have focused on the detailed morphological and photosynthetic changes that occur during the early development of tetraspores of Gracilaria vermiculophylla (Ohmi) Papenfuss (Gracilariales, Rhodophyta). Herein, we documented these changes in this species of red algae.; Background: Red algae are primitive photosynthetic eukaryotes, whose spores are ideal subjects for studies of photosynthesis and development. Although the development of red alga spores has received considerable research attention, few studies have focused on the detailed morphological and photosynthetic changes that occur during the early development of tetraspores of Gracilaria vermiculophylla (Ohmi) Papenfuss (Gracilariales, Rhodophyta). Herein, we documented these changes in this species of red algae. Results: In the tetraspores, we observed two types of division, cruciate and zonate, and both could develop into multicellular bodies (disks). During the first 84 hours, tetraspores divided several times, but the diameter of the disks changed very little; thereafter, the diameter increased significantly. Scanning electron microscopy observations and analysis of histological sections revealed that the natural shape of the disk remains tapered over time, and the erect frond grows from the central protrusion of the disk. Cultivation of tissue from excised disks demonstrated that the central protrusion of the disk is essential for initiation of the erect frond. Photosynthetic (i.e., PSII) activities were measured using chlorophyll fluorescence analysis. The results indicated that freshly released tetraspores retained limited PSII photosynthetic capabilities; when the tetraspores attached to a substrate, those capabilities increased significantly. In the disk, the PSII activity of both marginal and central cells was similar, although some degree of morphological polarity was present; the PSII photosynthetic capabilities in young germling exhibited an apico-basal gradient. Conclusions: Attachment of tetraspores to a substrate significantly enhanced their PSII photosynthetic capabilities, and triggered further development. The central protrusion of the disk is the growth point, may have transfer of nutritive material with the marginal cells. Within the young germling, the hetero-distribution of PSII photosynthetic capabilities might be due to the differences in cell functions. |
| 学科主题 | Developmental Biology |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000277850200001 |
| 公开日期 | 2010-11-18 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/1698]  |
| 专题 | 海洋研究所_实验海洋生物学重点实验室 |
| 通讯作者 | Wang, G, Tianjin Univ Sci & Technol, Coll Marine Sci & Engn, Key Lab Marine Resources & Chem, Tianjin 300457, Peoples R China |
| 作者单位 | 1.Tianjin Univ Sci & Technol, Coll Marine Sci & Engn, Key Lab Marine Resources & Chem, Tianjin 300457, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Changshu Inst Technol, Dept Biol, Changshu 215500, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Xiujun,Wang, Guangce,Pan, Guanghua,et al. Variations in morphology and PSII photosynthetic capabilities during the early development of tetraspores of Gracilaria vermiculophylla (Ohmi) Papenfuss (Gracilariales, Rhodophyta)[J]. BMC DEVELOPMENTAL BIOLOGY,2010,10:43. |
| APA | Xie, Xiujun.,Wang, Guangce.,Pan, Guanghua.,Gao, Shan.,Xu, Pu.,...&Wang, G, Tianjin Univ Sci & Technol, Coll Marine Sci & Engn, Key Lab Marine Resources & Chem, Tianjin 300457, Peoples R China.(2010).Variations in morphology and PSII photosynthetic capabilities during the early development of tetraspores of Gracilaria vermiculophylla (Ohmi) Papenfuss (Gracilariales, Rhodophyta).BMC DEVELOPMENTAL BIOLOGY,10,43. |
| MLA | Xie, Xiujun,et al."Variations in morphology and PSII photosynthetic capabilities during the early development of tetraspores of Gracilaria vermiculophylla (Ohmi) Papenfuss (Gracilariales, Rhodophyta)".BMC DEVELOPMENTAL BIOLOGY 10(2010):43. |
入库方式： OAI收割
来源：海洋研究所
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