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  

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

作　　者：何茜 俞晓磊 梁宇娴 张喆 黄晖[1,2,3] 周伟华[1,2,3] 袁翔城 HE Qian;YU Xiaolei;LIANG Yuxian;ZHANG Zhe;HUANG Hui;ZHOU Weihua;YUAN Xiangcheng(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;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;Sanya National Marine Ecosystem Research Station/Tropical Marine Biological Research Station in Hainan,Chinese Academy of Sciences,Sanya 572000,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[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

出　　处：《热带海洋学报》2022年第5期133-140,共8页Journal of Tropical Oceanography

基　　金：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)。

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。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.

关 键 词：丛生盔形珊瑚 共生藻 升温 形态型 代谢 光合生理 

分 类 号：P735.542[天文地球—海洋生物学]