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The research progress on homeostasis adjustment mechanism of coral symbiotic bacteria(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
2020 04
Page:
1-17
Research Field:
Publishing date:

Info

Title:
The research progress on homeostasis adjustment mechanism of coral symbiotic bacteria
Author(s):
LIN Zijun12 DU Xiaopeng2 ZENG Yanhua2 CAI Zhonghua2 & ZHOU Jin2**
1 Department of Earth Sciences, Tsinghua University, Beijing 100084, China
2 Ocean Science and Technology Division, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
Keywords:
coral holobiont carbon concentrated mechanisms signal regulation homeostasis mechanism
CLC:
-
PACS:
DOI:
10.19675/j.cnki.1006-687x.2019.09057
DocumentCode:

Abstract:
The excellent ecological value of coral reefs benefits from the stability and health of the symbiotic system. However, the balance and stability of the "coral- bacteria" holobiont is an important cornerstone for maintaining the health of coral reef ecosystems. In the past decade, a great deal of research had been carried out on the regulation mechanism of holobiont. Some important results have been obtained and the relationship among "microorganism-host-environment" had been disengaged. However, based on the complexity of symbiotic system, the steady-state adjustment mechanism of holobiont not only involve in one-dimensional. Under multiply environmental pressure, the ecological behavior of holobiont is complex and changeable. Some basic theories are still waiting for consensus. In this review, we attempts to summarize the latest research progress, including the composition of symbiotic microorganisms, the influence of environmental factors to coral associated bacteria, and the steady-state regulation types under multiple pressures (e.g. increased pollution, rising water temperature, and increased human activity, etc.). The main contents include carbon concentrated mechanisms, host’s preference for their associated bacteria, nutrition regulation and homeostasis adjustment mechanism of coral symbiotic bacteria under quorum sensing. Additionally, the molecular mechanisms involved in coral holobiton homeostasis, such as pH steady-state calcification, energy metabolism, oxidative stress and the response of cytochrome P450 family genes, etc., are also summarized. Finally, we also refines the research issues and possible direction in the future, including addition archaeal research in coral holobiont, using new methods (for example raman spectroscopy coupling with "omics" and Nano time of flight mass spectrometry technique ) and the constructing of ecological model. The aim of this review is to improve understanding of the interaction among corals, microorganisms and the environment. Meanwhile, we want to better understanding of the microecological mechanisms of symbiosis, and provide some theoretical reference for coral reefs protection.

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Last Update: 2020-01-15