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冰川冻土 ›› 2018, Vol. 40 ›› Issue (2): 395-403.doi: 10.7522/j.issn.1000-0240.2018.0045

• 寒旱区生物学 • 上一篇    下一篇

高寒地区湖泊浮游病毒时空分布特征

宋炫颖1,2,3, 刘勇勤1,2,3   

  1. 1. 中国科学院 青藏高原研究所 高寒生态学与生物多样性重点实验室, 北京 100101;
    2. 中国科学院 青藏高原地球科学卓越创新中心, 北京 100101;
    3. 中国科学院大学, 北京 100049
  • 收稿日期:2017-09-01 修回日期:2017-12-04 出版日期:2018-04-25 发布日期:2018-07-02
  • 通讯作者: 刘勇勤,E-mail:yqliu@itpcas.ac.cn E-mail:yqliu@itpcas.ac.cn
  • 作者简介:宋炫颖(1991-),女,河南商丘人,2015年在华北水利水电大学获学士学位,现为中国科学院青藏高原研究所在读硕士研究生,从事青藏高原湖泊浮游病毒生态学研究.E-mail:songxuanying@itpcas.ac.cn
  • 基金资助:
    国家自然科学基金项目(41425004;41771086)资助

Spatial and temporal distribution of virioplankton in arctic-alpine lakes

SONG Xuanying1,2,3, LIU Yongqin1,2,3   

  1. 1. Key Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China;
    2. Chinese Academy of Sciences(CAS) Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-09-01 Revised:2017-12-04 Online:2018-04-25 Published:2018-07-02

摘要: 湖泊中浮游病毒的丰度在105~108 mL-1,是浮游微生物中丰度较高的组分,在湖泊水生态系统中扮演着重要角色。病毒对宿主的侵染和裂解可以调节微生物群落的丰度、生产力、组成和种群多样性,同时还可以将宿主细胞的大量物质释放到湖泊中,改变碳循环和营养物质流通,进而影响生物地球化学循环。高寒地区湖泊水生态系统结构简单,主要以微生物为主,浮游病毒对微生物具有重要的调节作用,但目前研究较少。综述了近几年国内外对高寒地区湖泊病毒生态学的相关研究进展,主要包括病毒的时空分布以及与生物和非生物因子的关系、病毒与宿主的相互作用关系以及病毒对湖泊碳循环和微生物食物环的作用,发现高寒湖泊浮游病毒分布较广、多样性较高以及溶原性是病毒重要的生活策略,同时也得出由病毒裂解作用释放的有机碳对微生物活性和微生物食物环具有重要的作用。在此基础上,对今后我国青藏高原湖泊浮游病毒的研究提出了展望。

关键词: 浮游病毒, 高寒, 湖泊水生态, 微生物食物环, 青藏高原

Abstract: Virioplankton is the most abundant component of planktonic microorganisms in lake, ranging typically from 105 to 108 mL-1, which plays an important role in aquatic ecosystem. Viruses modulate the abundance, productivity, composition and diversity of microbial communities through infection and lysis. The lytic processes of the host microbial cells infected by viruses can affect the biogeochemical cycle by releasing large amount of the cells into the lake water, altering the carbon cycle and nutrient transformation. The structures of lake ecosystem in arctic-alpine regions are simple. They are mainly dominated by microorganisms, so viruses may play an important role in microbial lives. However, there is scarce about current knowledge on viruses. In this paper, the recent advances in viral ecology of arctic and alpine lakes are reviewed, including the temporal and spatial distributions of virus abundance, the effects of biological and abiotic factors on viral abundance, the interactions between virus and hosts and the significant role of virus on carbon cycle and microbial loop in lake ecosystems. The virus is widely distributed with high diversity. Lysogeny is a survival strategy to escape unfavorable environments. Released organic carbon by viral lysis can affect microbial activity and loop. Based on the former studies, it is put forwards that how to research the virioplankton in the lakes of Tibetan Plateau.

Key words: virioplankton, arctic-alpine, lake ecosystem, microbial loop, Tibetan Plateau

中图分类号: 

  • Q939.48