Distinct Network Interactions in Particle-Associated and Free-Living Bacterial Communities during a Microcystis aeruginosa Bloom in a Plateau Lake
Particle-associated bacteria (PAB) and free-living bacteria (FLB) from aquatic environments during phytoplankton blooms differ in their physical distance from algae. Both the interactions within PAB and FLB community fractions and their relationship with the surrounding environmental properties are...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2017-06-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | http://journal.frontiersin.org/article/10.3389/fmicb.2017.01202/full |
| _version_ | 1818416587872403456 |
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| author | Caiyun Yang Qi Wang Paulina N. Simon Jinyu Liu Lincong Liu Xianzhu Dai Xiaohui Zhang Jialiang Kuang Yasuo Igarashi Xuejun Pan Feng Luo |
| author_facet | Caiyun Yang Qi Wang Paulina N. Simon Jinyu Liu Lincong Liu Xianzhu Dai Xiaohui Zhang Jialiang Kuang Yasuo Igarashi Xuejun Pan Feng Luo |
| author_sort | Caiyun Yang |
| collection | DOAJ |
| description | Particle-associated bacteria (PAB) and free-living bacteria (FLB) from aquatic environments during phytoplankton blooms differ in their physical distance from algae. Both the interactions within PAB and FLB community fractions and their relationship with the surrounding environmental properties are largely unknown. Here, by using high-throughput sequencing and network-based analyses, we compared the community and network characteristics of PAB and FLB from a plateau lake during a Microcystis aeruginosa bloom. Results showed that PAB and FLB differed significantly in diversity, structure and microbial connecting network. PAB communities were characterized by highly similar bacterial community structure in different sites, tighter network connections, important topological roles for the bloom-causing M. aeruginosa and Alphaproteobacteria, especially for the potentially nitrogen-fixing (Pleomorphomonas) and algicidal bacteria (Brevundimonas sp.). FLB communities were sensitive to the detected environmental factors and were characterized by significantly higher bacterial diversity, less connectivity, larger network size and marginal role of M. aeruginosa. In both networks, covariation among bacterial taxa was extensive (>88% positive connections), and bacteria potentially affiliated with biogeochemical cycling of nitrogen (i.e., denitrification, nitrogen-fixation and nitrite-oxidization) were important in occupying module hubs, such as Meganema, Pleomorphomonas, and Nitrospira. These findings highlight the importance of considering microbial network interactions for the understanding of blooms. |
| first_indexed | 2024-12-14T11:53:16Z |
| format | Article |
| id | doaj.art-dab65fcfd168489cbde11557a02b4c3b |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-12-14T11:53:16Z |
| publishDate | 2017-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-dab65fcfd168489cbde11557a02b4c3b2022-12-21T23:02:14ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2017-06-01810.3389/fmicb.2017.01202268662Distinct Network Interactions in Particle-Associated and Free-Living Bacterial Communities during a Microcystis aeruginosa Bloom in a Plateau LakeCaiyun Yang0Qi Wang1Paulina N. Simon2Jinyu Liu3Lincong Liu4Xianzhu Dai5Xiaohui Zhang6Jialiang Kuang7Yasuo Igarashi8Xuejun Pan9Feng Luo10Research Center of Bioenergy and Bioremediation, Southwest UniversityChongqing, ChinaResearch Center of Bioenergy and Bioremediation, Southwest UniversityChongqing, ChinaResearch Center of Bioenergy and Bioremediation, Southwest UniversityChongqing, ChinaResearch Center of Bioenergy and Bioremediation, Southwest UniversityChongqing, ChinaResearch Center of Bioenergy and Bioremediation, Southwest UniversityChongqing, ChinaResearch Center of Bioenergy and Bioremediation, Southwest UniversityChongqing, ChinaResearch Center of Bioenergy and Bioremediation, Southwest UniversityChongqing, ChinaState Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources and Conservation of Guangdong Higher Education Institutes, College of Ecology and Evolution, Sun Yat-sen UniversityGuangzhou, ChinaResearch Center of Bioenergy and Bioremediation, Southwest UniversityChongqing, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and TechnologyKunming, ChinaResearch Center of Bioenergy and Bioremediation, Southwest UniversityChongqing, ChinaParticle-associated bacteria (PAB) and free-living bacteria (FLB) from aquatic environments during phytoplankton blooms differ in their physical distance from algae. Both the interactions within PAB and FLB community fractions and their relationship with the surrounding environmental properties are largely unknown. Here, by using high-throughput sequencing and network-based analyses, we compared the community and network characteristics of PAB and FLB from a plateau lake during a Microcystis aeruginosa bloom. Results showed that PAB and FLB differed significantly in diversity, structure and microbial connecting network. PAB communities were characterized by highly similar bacterial community structure in different sites, tighter network connections, important topological roles for the bloom-causing M. aeruginosa and Alphaproteobacteria, especially for the potentially nitrogen-fixing (Pleomorphomonas) and algicidal bacteria (Brevundimonas sp.). FLB communities were sensitive to the detected environmental factors and were characterized by significantly higher bacterial diversity, less connectivity, larger network size and marginal role of M. aeruginosa. In both networks, covariation among bacterial taxa was extensive (>88% positive connections), and bacteria potentially affiliated with biogeochemical cycling of nitrogen (i.e., denitrification, nitrogen-fixation and nitrite-oxidization) were important in occupying module hubs, such as Meganema, Pleomorphomonas, and Nitrospira. These findings highlight the importance of considering microbial network interactions for the understanding of blooms.http://journal.frontiersin.org/article/10.3389/fmicb.2017.01202/fullbloomMicrocystis aeruginosaparticle-associated bacteria (PAB)free-living bacteria (FLB)microbial interaction network |
| spellingShingle | Caiyun Yang Qi Wang Paulina N. Simon Jinyu Liu Lincong Liu Xianzhu Dai Xiaohui Zhang Jialiang Kuang Yasuo Igarashi Xuejun Pan Feng Luo Distinct Network Interactions in Particle-Associated and Free-Living Bacterial Communities during a Microcystis aeruginosa Bloom in a Plateau Lake Frontiers in Microbiology bloom Microcystis aeruginosa particle-associated bacteria (PAB) free-living bacteria (FLB) microbial interaction network |
| title | Distinct Network Interactions in Particle-Associated and Free-Living Bacterial Communities during a Microcystis aeruginosa Bloom in a Plateau Lake |
| title_full | Distinct Network Interactions in Particle-Associated and Free-Living Bacterial Communities during a Microcystis aeruginosa Bloom in a Plateau Lake |
| title_fullStr | Distinct Network Interactions in Particle-Associated and Free-Living Bacterial Communities during a Microcystis aeruginosa Bloom in a Plateau Lake |
| title_full_unstemmed | Distinct Network Interactions in Particle-Associated and Free-Living Bacterial Communities during a Microcystis aeruginosa Bloom in a Plateau Lake |
| title_short | Distinct Network Interactions in Particle-Associated and Free-Living Bacterial Communities during a Microcystis aeruginosa Bloom in a Plateau Lake |
| title_sort | distinct network interactions in particle associated and free living bacterial communities during a microcystis aeruginosa bloom in a plateau lake |
| topic | bloom Microcystis aeruginosa particle-associated bacteria (PAB) free-living bacteria (FLB) microbial interaction network |
| url | http://journal.frontiersin.org/article/10.3389/fmicb.2017.01202/full |
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