Modulation of growth, microcystin production, and algal-bacterial interactions of the bloom-forming algae Microcystis aeruginosa by a novel bacterium recovered from its phycosphere
Harmful algal blooms (HABs) in natural waters are of escalating global concern due to their detrimental impact on environmental health. Emerging evidence indicates that algae-bacteria symbionts can affect HAB features, though much about this interplay remains largely unexplored. The current study is...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-03-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2024.1295696/full |
| _version_ | 1797289767758462976 |
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| author | Yao Xiao Mijia Du Yang Deng Qinglin Deng Xin Wang Yiwen Yang Binghuo Zhang Yu-Qin Zhang |
| author_facet | Yao Xiao Mijia Du Yang Deng Qinglin Deng Xin Wang Yiwen Yang Binghuo Zhang Yu-Qin Zhang |
| author_sort | Yao Xiao |
| collection | DOAJ |
| description | Harmful algal blooms (HABs) in natural waters are of escalating global concern due to their detrimental impact on environmental health. Emerging evidence indicates that algae-bacteria symbionts can affect HAB features, though much about this interplay remains largely unexplored. The current study isolated a new species of Mucilaginibacter (type strain JXJ CY 39T) from culture biomass of the bloom-causing Microcystis aeruginosa FACHB-905 (Maf) from Lake Dianchi, China. Strain JXJ CY 39T was an aerobic, Gram-stain-negative rod bacterium that grew at 5–38°C, pH 4.0–11.0, and 0–3.0% NaCl. Taxonomic evaluation proposed a new species, with Mucilaginibacter lacusdianchii sp. nov., as the species epithet. Experimental results revealed that strain JXJ CY 39T spurred the growth of Maf by supplying soluble phosphorus and nitrogen during cultivation, despite the unavailability of soluble phosphorus and nitrogen. Additionally, by producing the plant hormone indole-3-acetate, strain JXJ CY 39T possibly impacted Maf’s functionality. Results from co-culture experiments with other strains from Maf biomass showed possible effects of strain JXJ CY 39T on the relationship between Maf and other cohabiting bacteria, as well as microcystin toxin production characteristics. Although Maf could foster the growth of strain JXJ CY 39T by supplying organic carbon, the strain’s growth could be regulated via specific chemical compounds based on antibiotic assays. Community composition analysis disclosed that this Mucilaginibacter strain positively affected Maf’s growth and modified densities and types of bacteria linked to Maf. Overall, these results suggest that the interactions between important HAB-causing organisms and their attached bacteria are complex, dynamic, and may influence the growth characteristics of algae. |
| first_indexed | 2024-03-07T19:10:46Z |
| format | Article |
| id | doaj.art-cfe7bd14be634ab7b1b9d83f3cf0ba12 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-03-07T19:10:46Z |
| publishDate | 2024-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-cfe7bd14be634ab7b1b9d83f3cf0ba122024-03-01T04:56:29ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2024-03-011510.3389/fmicb.2024.12956961295696Modulation of growth, microcystin production, and algal-bacterial interactions of the bloom-forming algae Microcystis aeruginosa by a novel bacterium recovered from its phycosphereYao Xiao0Mijia Du1Yang Deng2Qinglin Deng3Xin Wang4Yiwen Yang5Binghuo Zhang6Yu-Qin Zhang7College of Pharmacy and Life Science, Jiujiang University, Jiujiang, ChinaCollege of Pharmacy and Life Science, Jiujiang University, Jiujiang, ChinaInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, ChinaCollege of Pharmacy and Life Science, Jiujiang University, Jiujiang, ChinaCollege of Pharmacy and Life Science, Jiujiang University, Jiujiang, ChinaCollege of Pharmacy and Life Science, Jiujiang University, Jiujiang, ChinaCollege of Pharmacy and Life Science, Jiujiang University, Jiujiang, ChinaInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, ChinaHarmful algal blooms (HABs) in natural waters are of escalating global concern due to their detrimental impact on environmental health. Emerging evidence indicates that algae-bacteria symbionts can affect HAB features, though much about this interplay remains largely unexplored. The current study isolated a new species of Mucilaginibacter (type strain JXJ CY 39T) from culture biomass of the bloom-causing Microcystis aeruginosa FACHB-905 (Maf) from Lake Dianchi, China. Strain JXJ CY 39T was an aerobic, Gram-stain-negative rod bacterium that grew at 5–38°C, pH 4.0–11.0, and 0–3.0% NaCl. Taxonomic evaluation proposed a new species, with Mucilaginibacter lacusdianchii sp. nov., as the species epithet. Experimental results revealed that strain JXJ CY 39T spurred the growth of Maf by supplying soluble phosphorus and nitrogen during cultivation, despite the unavailability of soluble phosphorus and nitrogen. Additionally, by producing the plant hormone indole-3-acetate, strain JXJ CY 39T possibly impacted Maf’s functionality. Results from co-culture experiments with other strains from Maf biomass showed possible effects of strain JXJ CY 39T on the relationship between Maf and other cohabiting bacteria, as well as microcystin toxin production characteristics. Although Maf could foster the growth of strain JXJ CY 39T by supplying organic carbon, the strain’s growth could be regulated via specific chemical compounds based on antibiotic assays. Community composition analysis disclosed that this Mucilaginibacter strain positively affected Maf’s growth and modified densities and types of bacteria linked to Maf. Overall, these results suggest that the interactions between important HAB-causing organisms and their attached bacteria are complex, dynamic, and may influence the growth characteristics of algae.https://www.frontiersin.org/articles/10.3389/fmicb.2024.1295696/fullMucilaginibacter lacusdianchiiharmful algal bloombacterial symbiontgenomealgal-bacterial interactions |
| spellingShingle | Yao Xiao Mijia Du Yang Deng Qinglin Deng Xin Wang Yiwen Yang Binghuo Zhang Yu-Qin Zhang Modulation of growth, microcystin production, and algal-bacterial interactions of the bloom-forming algae Microcystis aeruginosa by a novel bacterium recovered from its phycosphere Frontiers in Microbiology Mucilaginibacter lacusdianchii harmful algal bloom bacterial symbiont genome algal-bacterial interactions |
| title | Modulation of growth, microcystin production, and algal-bacterial interactions of the bloom-forming algae Microcystis aeruginosa by a novel bacterium recovered from its phycosphere |
| title_full | Modulation of growth, microcystin production, and algal-bacterial interactions of the bloom-forming algae Microcystis aeruginosa by a novel bacterium recovered from its phycosphere |
| title_fullStr | Modulation of growth, microcystin production, and algal-bacterial interactions of the bloom-forming algae Microcystis aeruginosa by a novel bacterium recovered from its phycosphere |
| title_full_unstemmed | Modulation of growth, microcystin production, and algal-bacterial interactions of the bloom-forming algae Microcystis aeruginosa by a novel bacterium recovered from its phycosphere |
| title_short | Modulation of growth, microcystin production, and algal-bacterial interactions of the bloom-forming algae Microcystis aeruginosa by a novel bacterium recovered from its phycosphere |
| title_sort | modulation of growth microcystin production and algal bacterial interactions of the bloom forming algae microcystis aeruginosa by a novel bacterium recovered from its phycosphere |
| topic | Mucilaginibacter lacusdianchii harmful algal bloom bacterial symbiont genome algal-bacterial interactions |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2024.1295696/full |
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