Article ; Online: Aerobic bacteria produce nitric oxide via denitrification and promote algal population collapse.
2023 Volume 17, Issue 8, Page(s) 1167–1183
Abstract: Microbial interactions govern marine biogeochemistry. These interactions are generally considered to rely on exchange of organic molecules. Here we report on a novel inorganic route of microbial communication, showing that algal-bacterial interactions ... ...
| Abstract | Microbial interactions govern marine biogeochemistry. These interactions are generally considered to rely on exchange of organic molecules. Here we report on a novel inorganic route of microbial communication, showing that algal-bacterial interactions between Phaeobacter inhibens bacteria and Gephyrocapsa huxleyi algae are mediated through inorganic nitrogen exchange. Under oxygen-rich conditions, aerobic bacteria reduce algal-secreted nitrite to nitric oxide (NO) through denitrification, a well-studied anaerobic respiratory mechanism. The bacterial NO is involved in triggering a cascade in algae akin to programmed cell death. During death, algae further generate NO, thereby propagating the signal in the algal population. Eventually, the algal population collapses, similar to the sudden demise of oceanic algal blooms. Our study suggests that the exchange of inorganic nitrogen species in oxygenated environments is a potentially significant route of microbial communication within and across kingdoms. |
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| MeSH term(s) | Bacteria, Aerobic/metabolism ; Nitric Oxide ; Denitrification ; Bacteria/metabolism ; Nitrogen/metabolism | |||||
| Chemical Substances | Nitric Oxide (31C4KY9ESH) ; Nitrogen (N762921K75) | |||||
| Language | English | |||||
| Publishing date | 2023-05-12 | |||||
| Publishing country | England | |||||
| Document type | Journal Article ; Research Support, Non-U.S. Gov't | |||||
| ZDB-ID | 2406536-5 | |||||
| ISSN | 1751-7370 ; 1751-7362 | |||||
| ISSN (online) | 1751-7370 | |||||
| ISSN | 1751-7362 | |||||
| DOI | 10.1038/s41396-023-01427-8 | |||||
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| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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