珊瑚共附生DMSP降解菌的分离及其多样性分析

唐小玉; 张颖; 张文谦; 张燕英; 杨清松; 董俊德

doi:10.12284/hyxb2021110

珊瑚共附生DMSP降解菌的分离及其多样性分析

doi: 10.12284/hyxb2021110

唐小玉^{1, 5,},
张颖^{1, 5},
张文谦^{1, 5},
张燕英^2, ,,
杨清松¹,
董俊德^{1, 3, 4}

1.
中国科学院南海海洋研究所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，广东广州 510301
2.
烟台大学海洋学院，山东烟台 264005
3.
中国科学院海南热带海洋生物实验站，海南三亚 572000
4.
三亚中科海洋研究院海南省热带海洋生物技术重点实验室，海南三亚 572000
5.
中国科学院大学资源与环境学院，北京 100049

基金项目: 国家自然科学基金（41976147，41676107）；国家重点研发计划（2017YFC0506301）；中国科学院战略性先导科技专项A（XDA13020300）；中国科学院南海生态环境工程创新研究院创新发展基金（ISEE2018ZD02）；广东省海洋牧场规划、建设与管理工程技术研究项目（GML2019ZD0402）；广东省科技计划项目（2017B030314052）

详细信息

作者简介:
唐小玉（1994-），男，河南省鹤壁市人，研究方向为海洋环境学。E-mail：txy506@126.com

通讯作者:
张燕英，女，教授，主要从事海洋微生物生态学研究。E-mail：zhyanying@163.com

中图分类号: Q938.1⁺1; P714⁺.5
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- 被引次数: 0
出版历程
- 收稿日期: 2020-12-14
- 修回日期: 2021-03-16
- 网络出版日期: 2021-04-25
- 刊出日期: 2021-06-30

Isolation and diversity analysis of coral-associated DMSP degrading bacteria

Tang Xiaoyu^{1, 5
,},
Zhang Ying^{1, 5},
Zhang Wenqian^{1, 5},
Zhang Yanying^{2
, ,},
Yang Qingsong¹,
Dong Junde^{1, 3, 4}

1.
Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Provincial Key Laboratory of Marine Biology Applications, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2.
Ocean School, Yantai University, Yantai 264005, China
3.
Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya 572000, China
4.
Key Laboratory of Tropical Marine Biotechnology of Hainan Province, Sanya Institute of Oceanology, SCSIO, Sanya 572000, China
5.
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 二甲基巯基丙酸内盐(DMSP)是地球上最丰富的有机硫分子之一，在全球硫循环和气候调节中具有重要的作用。DMSP是“冷室气体”二甲基硫(DMS)最主要的前体物质；在海洋中，DMSP可被多种途径降解，微生物降解是其最重要的途径之一。珊瑚礁是海洋DMS重要的来源之一，珊瑚共附生DMSP降解菌在DMS生产过程中发挥着重要的作用。本研究从多孔鹿角珊瑚(Acropora millepora)、美丽鹿角珊瑚(Acropora formosa)、多棘鹿角珊瑚(Acropora echinata)、指状鹿角珊瑚(Acropora digitifera)、鹿角杯形珊瑚(Pocillopora damicornis)和丛生盔形珊瑚(Galaxea fascicularis) 6种造礁石珊瑚中分离获得珊瑚共附生DMSP降解菌39株，基于16S rRNA基因序列对DMSP降解菌进行系统发育分析，39株DMSP降解菌株分别隶属于4个门、6个纲、19个属，优势属为芽孢杆菌属(Bacillus)；通过火焰光度检测器−气相色谱(GC-FPD)联用技术检测DMSP降解产物，分析DMSP降解菌的DMS生产能力，结果显示，9株菌具有高产DMS能力，高产DMS菌株对于珊瑚应对气候变暖的益生作用有待后续深入研究。
- 二甲基巯基丙酸内盐 /
- 二甲基硫 /
- 降解菌 /
- 珊瑚礁生态系统 /
- 硫循环
Abstract: Dimethylsulfoniopropionate (DMSP) is one of the most abundant organic sulfur molecules on earth, and plays an important role in global sulfur cycle and climate regulation. DMSP is the principal precursor of dimethyl sulfide (DMS), which can be degraded through many ways in the ocean, and microbial degradation is one of the most important ways. Coral reef is one of the major sources of marine DMS, and coral-associated DMSP degrading bacteria play an important role in the process of DMS production. In the present study, 39 strains of DMSP degrading bacteria were isolated from six reef building corals, including Acropora millepora, Acropora formosa, Acropora echinata, Acropora digitifera, Pocillopora damicornis, and Galaxea fascicularis. The phylogenetic analysis of DMSP degrading bacteria was performed based on 16S rRNA gene sequence, 39 strains of DMSP degrading bacteria belonged to 4 phyla, 6 classes, and 19 genera, the dominant genus was Bacillus. The DMS production efficiency of DMSP degrading bacteria were analyzed by GC-FPD detection of DMSP products, the results showed that 9 strains had the ability of high DMS production. The probiotic effects of bacteria with high DMS production on corals in response to climate warming need to be further studied.
- DMSP /
- DMS /
- degrading bacteria /
- coral reef ecosystems /
- sulfur cycle

HTML全文

图 1 DMSP降解菌分类信息

Fig. 1 Taxonomic information of DMSP degrading bacteria

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图 2 DMSP降解菌株系统发育树

Fig. 2 The phylogenetic tree of DMSP degrading bacteria

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图 3 DMSP降解菌株DMS产量柱形图

Fig. 3 Histogram of DMS production of DMSP degrading bacteria

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表 1 6种石珊瑚中分离获得菌株在属水平上的分布

Tab. 1 The distribution of strains isolated from six species of corals at genus level

属	鹿角杯形珊瑚	丛生盔形珊瑚	多孔鹿角珊瑚	指状鹿角珊瑚	美丽鹿角珊瑚	多棘鹿角珊瑚
Acinetobacter	−	−	−	−	−	2
Bacillus	4	1	2	−	2	1
Deinococcus	1	−	−	−	−	−
Erythrobacter	1	1	−	−	−	−
Fulvimarina	−	−	1	1	−	−
Marinomonas	−	1	−	−	−	−
Methylobacterium	−	−	1	−	−	−
Micrococcus	−	−	1	−	−	−
Micromonospora	−	1	−	−	−	−
Microbacterium	1	−	−	1	−	−
Paenibacillus	1	1	−	−	−	−
Photobacterium	−	−	−	−	1	−
Paracoccus	−	−	1	−	−	−
Roseomonas	−	1	−	−	−	−
Roseivivax	−	−	−	−	1	−
Rummeliibacillus	1	−	−	−	−	−
Sphingomonas	−	−	−	1	−	−
Thalassotale	−	−	−	−	1	−
Vibrio	1	1	1	2	1	1
注：−表示没有获得隶属于该属的菌株。

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