Instability and Stasis Among the Microbiome of Seagrass Leaves, Roots and Rhizomes, and Nearby Sediments Within a Natural pH Gradient

Banister, Raymond B.; Schwarz, Melbert; Fine, Maoz; Ritchie, Kim B.; Muller, Erinn M.

doi:10.1007/s00248-021-01867-9

Cited by 13 publications

(7 citation statements)

References 78 publications

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“…Microbial diversity is influenced by various factors, such as sediment depth, water pH, and seagrass species (Banister et al, 2022). We found that the upper sediment layers had a higher alpha diversity of bacteria and archaea, whereas microbial eukaryotes were more abundant in the lower layers.…”

Section: Discussionmentioning

confidence: 99%

Metagenomics insights into microbial diversity shifts among seagrass sediments

Detcharoen,

Rattanachot,

Prathep

2024

Preprint

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Seagrasses are important in marine ecosystems by providing food and shelter for animals, storing carbon, and reducing sulfide and methane emissions. Previous studies found variations in the microbiomes of seagrass both above and below sediment surface, with certain microbes serving as indicators of seagrass health. Despite numerous studies on bacterial communities in specific seagrass species, little is known about bacterial communities in mixed seagrass beds. This study used metagenomics to investigate microbial diversity in bare and seagrass-associated sediments, across seven seagrass species combinations. The findings revealed higher alpha diversity of bacteria and archaea in the upper layers, whereas microbial eukaryotes were more diverse in the lower layers. Significant taxonomic differences were found between bare and seagrass sediments, and among seagrass species. Several metagenome-assembled genomes were reconstructed, primarily from Pseudomonadota and Thermodesulfobacteriota. This study improves our understanding of complex interactions between seagrasses and their associated microbial communities and laying a foundation for efficient strategies for the management and restoration of seagrass ecosystems.

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Section: Discussionmentioning

confidence: 99%

Metagenomics insights into microbial diversity shifts among seagrass sediments

Detcharoen,

Rattanachot,

Prathep

2024

Preprint

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“…roots, rhizomes, and leaves), as well as between species, which have a vast geographical distribution and are subject to a variety of environmental conditions. There are also differences between seagrass microbiomes and those of the adjacent seawater and surrounding sediment [44][45][46][47].…”

Section: Seagrass Biology Evolution and Biodiversitymentioning

confidence: 99%

Mini-review on the antimicrobial potential of actinobacteria associated with seagrasses

Siro,

Pipite

2024

Explor Drug Sci

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The search for novel therapeutic agents to combat the crisis of antimicrobial resistance has spanned from terrestrial to unique, marine environments. Currently, most of the drugs available for usage are derived from microbial metabolites, especially those belonging to the bacterial group, actinobacteria. Actinobacteria are hotspot organisms that exist in all habitats with a myriad of unique biosynthetic metabolites. Seagrasses appear to be a key ecosystem within the coastal environment worth bioprospecting for novel natural products. Unfortunately, literature about the bioactive potential of their associated prokaryotes, including actinobacteria remains limited. In this context, this review focused on actinobacteria with antibiotic-producing capabilities derived from different parts of seagrass plants (i.e. roots, rhizomes, and leaves). To date, there were no purified molecules derived from seagrass-associated actinobacteria that were subjected to structure elucidation. From the underpinning of numerous biological profiles such as antibacterial, antifungal, and algicidal activities of seagrass-derived actinobacteria reported in this review during the period from 2012–2020, it provides a continual growth of knowledge accruing overtime, providing a foundation for future research.

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“…It lives in open waters on sandy and muddy substrates, but it can also colonize coastal lagoons, tolerating natural salinity fluctuations [ 29 , 30 , 31 , 32 ]. Little is known about C. nodosa ’s epiphytic bacterial communities [ 25 , 33 , 34 ]. These studies showed that C. nodosa harbours a rich microbial community even under different pH changes [ 33 ] and maintains its host-specific microbial community when in syntopy with the invasive seaweed Caulerpa cylindracea [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

“…Little is known about C. nodosa ’s epiphytic bacterial communities [ 25 , 33 , 34 ]. These studies showed that C. nodosa harbours a rich microbial community even under different pH changes [ 33 ] and maintains its host-specific microbial community when in syntopy with the invasive seaweed Caulerpa cylindracea [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

A Tight Interaction between the Native Seagrass Cymodocea nodosa and the Exotic Halophila stipulacea in the Aegean Sea Highlights Seagrass Holobiont Variations

Conte

Apostolaki

Vizzini

2023

Plants

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Seagrasses harbour bacterial communities with which they constitute a functional unit called holobiont that responds as a whole to environmental changes. Epiphytic bacterial communities rapidly respond to both biotic and abiotic factors, potentially contributing to the host fitness. The Lessepsian migrant Halophila stipulacea has a high phenotypical plasticity and harbours a highly diverse epiphytic bacterial community, which could support its invasiveness in the Mediterranean Sea. The current study aimed to evaluate the Halophila/Cymodocea competition in the Aegean Sea by analysing each of the two seagrasses in a zone where these intermingled, as well as in their monospecific zones, at two depths. Differences in holobionts were evaluated using seagrass descriptors (morphometric, biochemical, elemental, and isotopic composition) to assess host changes, and 16S rRNA gene to identify bacterial community structure and composition. An Indicator Species Index was used to identify bacteria significantly associated with each host. In mixed meadows, native C. nodosa was shown to be affected by the presence of exotic H. stipulacea, in terms of both plant descriptors and bacterial communities, while H. stipulacea remained almost unchanged. This study provided evidence of the competitive advantage of H. stipulacea on C. nodosa in the Aegean Sea and suggests the possible use of associated bacterial communities as a descriptor of native seagrass sustainability.

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Instability and Stasis Among the Microbiome of Seagrass Leaves, Roots and Rhizomes, and Nearby Sediments Within a Natural pH Gradient

Cited by 13 publications

References 78 publications

Metagenomics insights into microbial diversity shifts among seagrass sediments

Metagenomics insights into microbial diversity shifts among seagrass sediments

Mini-review on the antimicrobial potential of actinobacteria associated with seagrasses

A Tight Interaction between the Native Seagrass Cymodocea nodosa and the Exotic Halophila stipulacea in the Aegean Sea Highlights Seagrass Holobiont Variations

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