ArticleThe ISME journal2019
Oxygen loss from seagrass roots coincides with colonisation of sulphide-oxidising cable bacteria and reduces sulphide stress.
Article in The ISME journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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39 citing papers in PubMed, 135 citations in OpenAlex.
- The impact of the CO2 fertilization effect in seagrasses: a comparative perspective with terrestrial plants.Journal of experimental botany · 2026Article
- Seagrasses host unique and vulnerable microbiomes, structured by inter-domain microbial interactions.iScience · 2026Article
- Identification of bacterial candidates that promote the growth of the seagrassbioRxiv : the preprint server for biology · 2026Article
- Recovery of metagenome-assembled genomes from Spartina alterniflora root microbiome in Fujian Province, China.Scientific data · 2026Article
- Artificial sediments enable reproducible cultivation and recapitulate ecological interactions of cable bacteria.ISME communications · 2026Article
- Microbial Enhancement of Plant Tolerance to Waterlogging: Mechanisms and Interplay with Biological Control of Pathogens.International journal of molecular sciences · 2025Review
- Global Review of Blue Carbon Ecosystem Microbial Communities.Environmental microbiology · 2025Review
- More Than a Stick in the Mud: Eelgrass Leaf and Root Bacterial Communities Are Distinct From Those on Physical Mimics.Environmental microbiology reports · 2025Article
- Functional Roles of the Seagrass (Plants (Basel, Switzerland) · 2025Article
- Exploring the structure and assembly of seagrass microbial communities in rhizosphere and phyllosphere.Applied and environmental microbiology · 2025Article
- Cable Bacteria and Their Biotechnological Application.Advances in biochemical engineering/biotechnology · 2025Review
- The contribution of seasonal variations and Zostera marina presence to the bacterial community assembly of seagrass bed sediments.BMC microbiology · 2024Article
- Diversity, composition and potential roles of sedimentary microbial communities in different coastal substrates around subtropical Okinawa Island, Japan.Environmental microbiome · 2024Article
- Electrogenic sulfur oxidation mediated by cable bacteria and its ecological effects.Environmental science and ecotechnology · 2024Review
- Multiparameter Sensing of Oxygen and pH at Biological Interfaces via Hyperspectral Imaging of Luminescent Sensor Nanoparticles.ACS sensors · 2024Article
- Seagrass-mediated rhizosphere redox gradients are linked with ammonium accumulation driven by diazotrophs.Microbiology spectrum · 2024Article
- Novel insights into the rhizosphere and seawater microbiome of Zostera marina in diverse mariculture zones.Microbiome · 2024Article
- Microbiomes ofFrontiers in microbiology · 2024Article
- Network Analysis Indicates Microbial Assemblage Differences in Life Stages ofApplied and environmental microbiology · 2023Article
- Studies on the Composition and Diversity of SeagrassPlants (Basel, Switzerland) · 2023Article
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Seagrasses thrive in anoxic sediments where sulphide can accumulate to phytotoxic levels. So how do seagrasses persist in this environment? Here, we propose that radial oxygen loss (ROL) from actively growing root tips protects seagrasses from sulphide intrusion not only by abiotically oxidising sulphides in the rhizosphere of young roots, but also by influencing the abundance and spatial distribution of sulphate-reducing and sulphide-oxidising bacteria. We used a novel multifaceted approach combining imaging techniques (confocal fluorescence in situ hybridisation, oxygen planar optodes, and sulphide diffusive gradients in thin films) with microbial community profiling to build a complete picture of the microenvironment of growing roots of the seagrasses Halophila ovalis and Zostera muelleri. ROL was restricted to young root tips, indicating that seagrasses will have limited ability to influence sulphide oxidation in bulk sediments. On the microscale, however, ROL corresponded with decreased abundance of potential sulphate-reducing bacteria and decreased sulphide concentrations in the rhizosphere surrounding young roots. Furthermore, roots leaking oxygen had a higher abundance of sulphide-oxidising cable bacteria; which is the first direct observation of these bacteria on seagrass roots. Thus, ROL may enhance both abiotic and bacterial sulphide oxidation and restrict bacterial sulphide production around vulnerable roots, thereby helping seagrasses to colonise sulphide-rich anoxic sediments.
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