台湾海峡南部海域好氧不产氧光合异养细菌对上升流的响应

陈瑶; 张瑶; 焦念志

doi:10.12284/hyxb2021068

台湾海峡南部海域好氧不产氧光合异养细菌对上升流的响应

doi: 10.12284/hyxb2021068

陈瑶^1,,
张瑶^2, ,,
焦念志^2, ,

1.
国家海洋局厦门海洋环境监测中心站，福建厦门 361008
2.
厦门大学海洋与地球学院近海海洋环境科学国家重点实验室，福建厦门 361101

基金项目: 科技部重点研发计划（2016YFA0601400）

详细信息

作者简介:
陈瑶(1980-)，女，浙江省永康市人，博士，主要研究方向为海洋生态学。E-mail：baby_680@126.com

通讯作者:
张瑶，教授，博士生导师，主要研究方向为微生物海洋学。E-mail: yaozhang@xmu.edu.cn

焦念志，中国科学院院士，主要研究海洋微型生物碳泵、海洋微型生物生理生态、分子生态学以及相关的资源环境效应。E-mail: jiao@xmu.edu.cn

中图分类号: 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: 2021-02-18
- 网络出版日期: 2021-05-24
- 刊出日期: 2021-06-30

Response of aerobic anoxygenic phototrophic bacteria to upwelling in the southern Taiwan Strait of China

Chen Yao^1
,,
Zhang Yao^{2
, ,},
Jiao Nianzhi^{2
, ,}

1.
Xiamen Marine Environmental Monitoring Central Station, State Oceanic Administration, Xiamen 361008, China
2.
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, China

摘要

摘要: 国内外关于好氧不产氧光合异养细菌(AAPB)和上升流之间关系的研究甚少。本文采用“基于蓝细菌校正的时序红外显微技术”研究了台湾海峡南部近岸上升流中心区AAPB对上升流变化的响应。研究结果发现，在上升流涌升的初始阶段，AAPB和总异养细菌丰度较低；随着上升流的发展，两者丰度均增加并在上升流的成熟期达到最高值；而当上升流衰退时，AAPB和总异养细菌丰度开始下降。在上升流发展过程中，AAPB丰度与叶绿素a浓度在一定范围内呈显著正相关，但同时受环境低磷浓度的限制，总异养细菌丰度与氮、磷、硅营养盐均有显著正相关，表明叶绿素a指示的浮游植物所释放的溶解有机碳和环境中的磷限制可能对AAPB起着更为直接和重要的作用，而营养盐则可能在总异养细菌对上升流的响应中起着重要作用。本研究有助于我们理解AAPB在碳及其他生源要素循环中的作用及其调控机制。
- 好氧不产氧光合异养细菌 /
- 台湾海峡 /
- 上升流
Abstract: There is little information about the relationship between aerobic anoxygenic photoheterotrophic bacteria (AAPB) and upwelling. In this work, the response of AAPB to upwelling in the southern Taiwan Strait was examined, using the “Time-series observation-based cyanobacteria-calibrated InfraRed Epifluorescence Microscopy, TIREM”. The results showed that in the initial stage of upwelling, the abundances of AAPB and total heterotrophic bacteria were low; with the development, their abundances both increased and reached the highest value at the mature stage of upwelling; notably, when the upwelling declined, they began to decrease. During the developmental process of upwelling, AAPB abundance was positively correlated with chlorophyll a concentration in a certain range, and limited by low phosphorus concentration, while total heterotrophic bacteria abundance was positively correlated with nitrogen, phosphorus and silicon nutrients concentration, suggesting that dissolved organic carbon released by phytoplankton and phosphorus limitation might play a more direct and important role in AAPB, while nutrients probably acted as an important role in the response of total heterotrophic bacteria to upwelling. This study will help to better understand the unique role of AAPB in the biogeochemical cycle of carbon and other biogenic elements.
- aerobic anoxygenic phototrophic bacteria /
- Taiwan Strait /
- upwelling

HTML全文

图 1 台湾海峡站位

Fig. 1 Location of the stations in the Taiwan Strait

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图 2 台湾海峡南部海域大面站温度（单位：°C）和盐度的垂直分布

Fig. 2 Vertical distribution of temperature (unit: °C) and salinity in the southern Taiwan Strait

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图 3 B1站位温度（a）和盐度（b）剖面动态变化

Fig. 3 Variation of temperature (a) and salinity (b) at Station B1

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图 4 台湾海峡南部海域大面站营养盐浓度（单位：μmol/L）的垂直分布

Fig. 4 Vertical distribution of nutrients concentration (uint: μmol/L) in the southern Taiwan Strait

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图 5 B1站位营养盐浓度（单位：μmol/L）的剖面动态变化

a. 硝酸盐; b. 亚硝酸盐; c. 铵盐; d. 磷酸盐; e. 硅酸盐

Fig. 5 Variation of nutrients concentration (unit: μmol/L) at Station B1

a. $ {{\rm {NO}}_3^-} $-N; b. $ {{\rm {NO}}_2^-} $-N; c. $ {{\rm {NH}}_4^+} $-N; d. $ {{\rm {PO}}_4^{3-}} $-P; e. $ {{\rm {SiO}}_3^{2-}} $-Si

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图 6 B1站位叶绿素a浓度（单位：μg/L）（a）、AAPB丰度（单位：cell/mL）（b）、总异养细菌丰度（单位：cell/mL）（c）和AAPB%（d）的剖面动态变化

Fig. 6 Variation of chlorophyll a concentration (unit: μg/L) (a), AAPB abundance (unit: cell/mL) (b), total bacterial abundance (unit: cell/mL) (c) and AAPB% (d) at Station B1

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图 7 台湾海峡南部海域上升流事件中AAPB丰度（a）、总异养细菌丰度（b）和叶绿素a浓度的相关关系

实心圆代表叶绿素a浓度较低的站位，AAPB丰度与叶绿素a浓度显著正相关；空心圆代表叶绿素a浓度较高的站位，AAPB和总异养细菌丰度与叶绿素a浓度无相关性

Fig. 7 Plots of AAPB abundance (a) and total bacterial abundance (b) vs chlorophyll a concentration in the development of upwelling in the southern Taiwan Strait

The solid circles represent the stations with low chlorophyll a concentration where AAPB abundance is positively correlate with chlorophyll a concentration; the open circles represent the stations with high chlorophyll a concentration where AAPB abundance and total bacterial abundance display little correlation with chlorophyll a concentration

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