Adaptive Responses of Cyanobacteria to Phosphate Limitation: A Focus on Marine Diazotrophs DOI Creative Commons

Chloé Caille,

Solange Duhamel, Amel Latifi

et al.

Environmental Microbiology, Journal Year: 2024, Volume and Issue: 26(12)

Published: Dec. 1, 2024

ABSTRACT Phosphorus is an essential component of numerous macromolecules and vital for life. Its availability significantly influences primary production, particularly in oligotrophic environments. Marine diazotrophic cyanobacteria, which play key roles biogeochemical cycles through nitrogen fixation (N 2 fixation), have adapted to thrive phosphate (P i )‐poor areas. However, the molecular mechanisms that facilitate their adaptation such conditions remain incompletely understood. Bacteria evolved various strategies cope with P limitation, including detecting availability, utilising high‐affinity transporters, hydrolyzing dissolved organic phosphorus (DOP) enzymes. This review synthesises current knowledge regarding how cyanobacteria adapt scarcity, particular emphasis on subtropical marine free‐living diazotrophs ability utilise diverse DOP molecules. Omics approaches, as (meta)genomics (meta)transcriptomics, reveal resilience face scarcity highlight need further research into adaptive strategies. Adaptation limitation often intertwined broader response multiple limitations stresses. underscores importance understanding assess ecological these crucial microorganisms dynamic environments, context global climate change.

Language: Английский

Potential gap in understanding cyanoHABs: Light-dependent morphological variations in colonial cyanobacterium Microcystis DOI
Ganyu Feng,

Jun Cao,

Huai‐Min Chen

et al.

Harmful Algae, Journal Year: 2024, Volume and Issue: 134, P. 102622 - 102622

Published: March 21, 2024

Language: Английский

Citations

6
Extreme trophic tales: deciphering bacterial diversity and potential functions in oligotrophic and hypereutrophic lakes DOI Creative Commons

Guijuan Xie,

Yuqing Zhang,

Yi Gong

et al.

BMC Microbiology, Journal Year: 2024, Volume and Issue: 24(1)

Published: Sept. 14, 2024

Language: Английский

Citations

5
The microbial phosphorus cycle in aquatic ecosystems DOI
Solange Duhamel

Nature Reviews Microbiology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 11, 2024

Language: Английский

Citations

5
Phosphorus deficiency alleviates iron limitation in Synechocystis cyanobacteria through direct PhoB-mediated gene regulation DOI Creative Commons
Guo‐Wei Qiu,

Wen-Wen Zheng,

H. Yang

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: May 24, 2024

Abstract Iron and phosphorus are essential nutrients that exist at low concentrations in surface waters may be co-limiting resources for phytoplankton growth. Here, we show deficiency increases the growth of iron-limited cyanobacteria ( Synechocystis sp. PCC 6803) through a PhoB-mediated regulatory network. We find PhoB, addition to its well-recognized role controlling phosphate homeostasis, also regulates key metabolic processes crucial cyanobacteria, including ROS detoxification iron uptake. Transcript abundances PhoB-targeted genes enriched samples from phosphorus-depleted seawater, conserved PhoB-binding site is widely present promoters target genes, suggesting regulation highly conserved. Our findings provide molecular insights into responses simultaneous iron/phosphorus nutrient limitation.

Language: Английский

Citations

4
Insights into the interaction mechanisms between microcystin-degrading bacteria and Microcystis aeruginosa DOI
Tangjian Peng,

Yan‐Qing Tang,

Danping Cai

et al.

Water Research, Journal Year: 2024, Volume and Issue: 265, P. 122241 - 122241

Published: Aug. 14, 2024

Language: Английский

Citations

4
Phycospheric Bacteria Alleviate the Stress of Erythromycin on Auxenochlorella pyrenoidosa by Regulating Nitrogen Metabolism DOI Creative Commons
Jiping Li, Shurui Wang, Yuan Fang

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(1), P. 121 - 121

Published: Jan. 3, 2025

Macrolide pollution has attracted a great deal of attention because its ecotoxic effects on microalgae, but the role phycospheric bacteria under antibiotic stress remains unclear. This study explored toxic erythromycin (ERY) growth and nitrogen metabolism Auxenochlorella pyrenoidosa; then, it analyzed predicted composition ecological function microalgae ERY stress. We found that 0.1, 1.0, 10 mg/L inhibited chlorophyll gradually showed enhanced abilities over course 21 days. As exposure time progressed, nitrate reductase activities increased, remained significantly lower than control group at d. NO3− concentrations in all treatment groups decreased were consistent with growth. NO2− three those during changed community diversity bacteria. The relative abundance bacteria, such as unclassified-f-Rhizobiaceae, Mesorhizobium, Sphingopyxis, Aquimonas, Blastomonas, varied to different degrees. Metabolic functions, ABC transporters, microbial diverse environments, biosynthesis amino acids, upregulated treatments higher (1.0 mg/L). Higher denitrification, nitrous oxide nitrite respiration. findings this suggest alleviate restore by regulating system.

Language: Английский

Citations

0
A summer in the greater Paris: trophic status of peri-urban lakes shapes prokaryotic community structure and functional potential DOI Creative Commons
Pierre Foucault, Sébastien Halary,

Charlotte Duval

et al.

Environmental Microbiome, Journal Year: 2025, Volume and Issue: 20(1)

Published: Feb. 17, 2025

Abstract With more than 12 million inhabitants, the Greater Paris offers a “natural laboratory” to explore effects of eutrophication on freshwater lake’s microbiomes within relative restricted area (~ 70 km radius). Here, 4-months survey was carried out during summertime monitor planktonic microbial communities nine lakes located around (Île-de-France, France) comparable morphologies, yet distinct trophic statuses from mesotrophic hypereutrophic. By thus minimizing confounding factors, we investigated how status could influence prokaryotic community structures (16S rRNA gene sequencing) and functions (shotgun metagenomics). These harbored highly diverse communities, their appears as main driver explaining both differences in structure functional potential. Although pool quite stable shared among lakes, taxonomical changes were correlated. According status, phosphorus metabolism-related genes highlighted relevant involved biogeochemical cycles. Overall, hypereutrophic displayed highest contrast heterogeneity over time, suggesting specific regime shift compared eutrophic lakes.

Language: Английский

Citations

0
Cyanophage Lysis of the Cyanobacterium Nodularia spumigena Affects the Variability and Fitness of the Host‐Associated Microbiome DOI Open Access
Sigitas Šulčius, Gediminas Alzbutas,

Valiantsin Lukashevich

et al.

Environmental Microbiology, Journal Year: 2025, Volume and Issue: 27(4)

Published: March 28, 2025

ABSTRACT Cyanobacteria are intricately linked with its microbiome through multiple metabolic interactions. We assessed how these interactions might be affected by cyanophage infection and lysis in cyanobacterium Nodularia spumigena . The genome‐scale models analysis of putative revealed a bidirectional cross‐feeding potential within the N. microbiome, heterotrophic bacteria exhibiting greater level trophic dependency on cyanobacterium. Our results indicate that microbes associated rely supply various amino acids, reduced carbon compounds protein synthesis cofactors released cyanobacterial host. observed compositional changes were multiplicity increased increasing initial viral load. Higher mortality led to decreased variability relative abundances bacteria, suggesting an indirect restriction their niche space. Lysis resulted substantial decline estimated absolute indicating fitness co‐occurring absence Altogether, we demonstrate gradual increase pressure photosynthetic host propagates microbial community, disrupting cooperative nature connectivity microbiome.

Language: Английский

Citations

0
The influence of 2,6-Di-tert-butyl-p-cresol stress on the microalga Phaeodactylum tricornutum and phycosphere bacteria community DOI

Xiao Lu,

Jie Liu, Xinfeng Xiao

et al.

World Journal of Microbiology and Biotechnology, Journal Year: 2025, Volume and Issue: 41(5)

Published: April 28, 2025

Language: Английский

Citations

0
Cold-Temperate Mountainous Freshwater Produces Methane by Algal Metabolism DOI

Zhongjing Zhao,

Tengzhong Zhang,

Zhonghua Zhao

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

We reported important environmental drivers of dissolved CH4 concentrations (d-CH4) in nutrient-limited mountainous freshwater a cold-temperate region and explored the potential for multiple known oxic production pathways. Field investigation revealed consistent supersaturated d-CH4 surface water (relative to theoretical value at atmospheric equilibrium), with significant seasonal variations. Statistical analysis highlighted direct impact algal dynamics indirect effect temperature nutrients on d-CH4. Further lab-scale incubation demonstrated that decreased by 55.25 93.65% algae removal, while it increased 4 10 times methylphosphonate (MPn) amendment. These findings argued produced from metabolism related MPn had high It also verified pivotal role cyanobacteria this mechanism, light acting as regulatory factors. Through highlighting characteristics proposing through lakes, study enriches comprehension aquatic cycle warns about importance preserving balance minimal human disturbance.

Language: Английский

Citations

0