...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine biology >Variation in the photosynthetic activities of the dinoflagellate Akashiwo sanguinea during formation of resting cysts
【24h】

Variation in the photosynthetic activities of the dinoflagellate Akashiwo sanguinea during formation of resting cysts

机译：在休息囊肿形成过程中丁胺蛋白Akashiwo Sanguinea的光合作用的变异

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Resting cysts represent the dormant life stage produced by sexual reproduction of dinoflagellates; it generally maintain a limited level of metabolic activities. In the present study, changes in the photosynthetic apparatus ofAkashiwo sanguineaduring the encystment process in different nitrogen (N) conditions were characterized, and the transcriptional responses of nine photosynthesis genes were further evaluated. The photochemical efficiency decreased with elevation of N deprivation and growth of algae, and the resting cysts maintained limited photosynthetic activity. Meanwhile, the transcription of photosystem II genes (psbAandpsbD) were down-regulated, especially the levels of thepsbAgene, suggesting the inactivation of photosystem II under N limitation. Moreover, genes involved in cytochrome f (petA) and ATP synthase (atpA,atpB) were also transcribed at low levels in N-deprivation cultures. In contrast, the transcription of the RubisCO large subunit gene (rbcL) was up-regulated, indicating the maintenance of carbon fixation in N-limited conditions. The transcription levels of photosystem I genes (psaAandpsaB) showed no significant correlation with the N condition. Further, most of the photosynthesis genes were down-regulated in the resting cysts, which was coincided with the inactive physiological status of the dormant stage. The results demonstrated that photosynthesis genes are differentially regulated in response to varying N conditions and life cycles. The findings will provide fundamental knowledge for better understanding the physiological characteristics and molecular regulation mechanisms in the developmental life cycle of marine dinoflagellates.
机译：休息囊肿代表丁络植物的性繁殖产生的休眠寿命阶段;它通常保持有限的代谢活动。在本研究中，表征了kashashiwo sanguineading在不同氮气（n）条件下的封口过程中的光合仪的变化，并进一步评价九个光合作用基因的转录反应。光化学效率随着抗剥夺和藻类生长的升高而降低，静止囊肿保持有限的光合活性。同时，照相系统II基因（PSBAANDPSBD）的转录被下调，尤其是Thepsbagene的水平，表明在N限制下照相系统II的灭活。此外，参与细胞色素F（PETA）和ATP合酶（ATPA，ATPB）的基因也在N-剥夺培养物中以低水平转录。相反，上调了Rubisco大亚基基因（RBCL）的转录，表明在限量条件下维持碳固定。电极系统I基因（PsaAndpsab）的转录水平显示出与N条件无显着相关性。此外，大多数光合作用基因在静止囊肿中下调，其与休眠阶段的非活性生理状态吻合。结果表明，响应于不同的条件和生命周期，光合作用基因差异调节。该研究结果将提供基本知识，以便更好地理解海洋恐龙的发育生命周期中的生理特性和分子调控机制。

著录项

  • 来源
    《Marine biology》 |2020年第11期|158.1-158.12|共12页
  • 作者

    Liu Yun; Chen Tiantian; Wang Xiaoting; Song Shuqun; Li Caiwen;

  • 作者单位

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Peoples R China|Pilot Natl Lab Marine Sci & Technol Qingdao Lab Marine Ecol & Environm Sci Qingdao 266237 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Peoples R China|Pilot Natl Lab Marine Sci & Technol Qingdao Lab Marine Ecol & Environm Sci Qingdao 266237 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Peoples R China;

    Ocean Univ China Coll Life Sci Qingdao 266003 Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Peoples R China|Pilot Natl Lab Marine Sci & Technol Qingdao Lab Marine Ecol & Environm Sci Qingdao 266237 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Peoples R China;

    Chinese Acad Sci Inst Oceanol CAS Key Lab Marine Ecol & Environm Sci Qingdao 266071 Peoples R China|Pilot Natl Lab Marine Sci & Technol Qingdao Lab Marine Ecol & Environm Sci Qingdao 266237 Peoples R China|Chinese Acad Sci Ctr Ocean Megasci Qingdao 266071 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号