热带海洋学报 ›› 2022, Vol. 41 ›› Issue (5): 133-140.doi: 10.11978/2021078

• 海洋生物学 • 上一篇    下一篇

升温对丛生盔形珊瑚两种形态型代谢和共生藻光合生理的影响

何茜1,2,3,4(), 俞晓磊1,2,3,4, 梁宇娴1,2,3, 张喆1,2,3,4, 黄晖1,2,3, 周伟华1,2,3(), 袁翔城1,2,3()   

  1. 1.中国科学院热带海洋生物资源与生态重点实验室, 广东省应用海洋生物学重点实验室, 中国科学院南海海洋研究所, 广东 广州 510301
    2.三亚海洋科学综合(联合)实验室; 海南省热带海洋生物技术重点实验室, 三亚中科海洋研究院, 海南 三亚 572000
    3.海南三亚海洋生态系统国家野外科学观测研究站; 中国科学院海南热带海洋生物实验站, 海南 三亚572000
    4.中国科学院大学, 北京 100049
  • 收稿日期:2021-06-22 修回日期:2021-08-26 出版日期:2022-09-10 发布日期:2021-08-27
  • 通讯作者: 周伟华,袁翔城
  • 作者简介:何茜(1997—), 女, 广东省茂名市人, 硕士研究生, 从事珊瑚生物学和珊瑚礁生态学研究。email: heqian19@mails.ucas.ac.cn
  • 基金资助:
    国家自然科学基金(41976120);海南省重点研发计划(ZDYF2020200);三亚崖州湾科技局科研项目(SKJC-2020-01-010);广东省科技计划(2020B1212060058)

Effects of warming on the metabolism and photosynthetic physiology of the symbiotic algae of two morphological types of Galaxea fascicularis

HE Qian1,2,3,4(), YU Xiaolei1,2,3,4, LIANG Yuxian1,2,3, ZHANG Zhe1,2,3,4, HUANG Hui1,2,3, ZHOU Weihua1,2,3(), YUAN Xiangcheng1,2,3()   

  1. 1. CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
    2. CAS-HKUST Sanya Joint Laboratory of Marine Science Research; Key Laboratory of Tropical Marine Biotechnology of Hainan Province, Sanya Institute of Oceanology, South China Sea Institute of Oceanography, Sanya 572000, China
    3. Sanya National Marine Ecosystem Research Station; Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya 572000, China
    4. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2021-06-22 Revised:2021-08-26 Online:2022-09-10 Published:2021-08-27
  • Contact: ZHOU Weihua, YUAN Xiangcheng
  • Supported by:
    National Natural Science Foundation of China(41976120);Key Research and Development Project of Hainan Province, China(ZDYF2020200);Research Project of Sanya Yazhou-Bay SCI-TECH City Administration(SKJC-2020-01-010);Science and Technology Planning Project of Guangdong Province, China(2020B1212060058)

摘要:

文章研究了温度升高对一种造礁石珊瑚——丛生盔形珊瑚(Galaxea fascicularis)的两种形态型(H和S型)代谢和共生藻光合生理的影响。研究显示H型和S型对升温的生理响应差异明显: 在虫黄藻水平上, H型丢失了大量的虫黄藻, 减轻了共生体呼吸代谢的负荷; S型中虫黄藻数目尚可维持共生体呼吸代谢的需求, 同时提高叶绿素b含量增强光的吸收。在宿主水平上, H型充分利用虫黄藻输送的营养物质, 并通过异养摄食补偿能量消耗; S型宿主所储存的营养物质可以协助共生体适应热环境。结果表明, 丛生盔形珊瑚两种形态型通过不同的能量利用方式适应环境的变化, H型倾向于维持共生体的代谢平衡, 而S型倾向于提高共生藻的能量分配。

关键词: 丛生盔形珊瑚, 共生藻, 升温, 形态型, 代谢, 光合生理

Abstract:

The effects of warming on the metabolism and photosynthetic physiology of symibiodiniaceae of two morphological types (H and S) of a reef-building coral, Galaxea fascicularis, were studied. The results showed that the physiological responses of H-type and S-type to warming were clearly different. At the symibiodiniaceae level, H-type lost a large number of symibiodiniaceae, and reduced the burden of respiratory metabolism of symbionts. In S-type, the number of zooxanthellae could still maintain the needs of symbionts for respiratory metabolism, while increasing the content of chlorophyll b to enhance light absorption. At the host level, the H-type made full use of nutrients delivered by zooxanthellae and compensated for energy consumption through heterotrophic feeding. The nutrients stored by the S-type host could assist the symbionts to adapt to the thermal environment. Galaxea fascicularis adapted itself to environmental changes through different energy utilization modes, i.e., H-type tended to maintain the metabolic balance of the symbiont, while S-type intended to improve the energy distribution of symbiotic algae.

Key words: Galaxea fascicularis, symbiotic algae, warming, morphological types, metabolism, photosynthetic physiology

中图分类号: 

  • P735.542