Inherent tendency of Synechococcus and heterotrophic bacteria for mutualism on long-term coexistence despite environmental interference
Mutualism between Synechococcus and heterotrophic bacteria has been found to support their prolonged survival in nutrient-depleted conditions. However, environmental interference on the fate of their mutualism is not understood. Here, we show that exogenous nutrients disrupt their established mutual...
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Veröffentlicht in: | Science advances 2022-09, Vol.8 (39), p.eabf4792-eabf4792 |
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Sprache: | eng |
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Zusammenfassung: | Mutualism between
Synechococcus
and heterotrophic bacteria has been found to support their prolonged survival in nutrient-depleted conditions. However, environmental interference on the fate of their mutualism is not understood. Here, we show that exogenous nutrients disrupt their established mutualism. Once the exogenous nutrients were exhausted,
Synechococcus
and heterotrophic bacteria gradually reestablished their metabolic mutualism during 450 days of culture, which revived unhealthy
Synechococcus
cells. Using metagenomics, metatranscriptomics, and the
15
N tracer method, we reveal that the associated bacterial nitrogen fixation triggered the reestablishment of the mutualism and revival of
Synechococcus
health. During this process, bacterial community structure and functions underwent tremendous adjustments to achieve the driving effect, and a cogeneration of nitrogen, phosphorus, iron, and vitamin by the heterotrophic bacteria sustained
Synechococcus
’s prolonged healthy growth. Our findings suggest that
Synechococcus
and heterotrophic bacteria may have an inherent tendency toward mutualism despite environmental interference. This may exhibit their coevolutionary adaptations in nutrient-deficient environments.
Synechococcus
and bacteria tend to be mutually beneficial in nature when nutrients are limited. |
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ISSN: | 2375-2548 2375-2548 |
DOI: | 10.1126/sciadv.abf4792 |