Symbiotic nutrient cycling enables the long-term survival of Aiptasia in the absence of heterotrophic food sources DOI Creative Commons
Nils Rädecker, Anders Meibom

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2022, Volume and Issue: unknown

Published: Dec. 11, 2022

Abstract Phototrophic Cnidaria are mixotrophic organisms that can complement their heterotrophic diet with nutrients assimilated by algal endosymbionts. Metabolic models suggest the translocation of photosynthates and derivatives from algae may be sufficient to cover metabolic energy demands host. However, importance heterotrophy nutritional budget these holobionts remains unclear. Here, we report on long-term survival photosymbiotic anemone Aiptasia in absence food sources. Following one year starvation, anemones remained fully viable but showed an 85 % reduction biomass compared regularly fed counterparts. This shrinking was accompanied a host protein content density, indicative severe nitrogen limitation. Nonetheless, isotopic labeling experiments combined NanoSIMS imaging revealed contribution algal-derived metabolism unaffected due increase photosynthesis more efficient carbon translocation. Taken together, our results that, one- timescale, feeding is not essential fulfilling requirements holobiont. But, while symbiotic nutrient cycling effectively retains holobiont over long time scales, data critical source required for growth under oligotrophic conditions.

Language: Английский

The photosymbiotic acoel Convolutriloba retrogemma (Xenacoelomorpha) is sensitive to thermal stress DOI

Marcelo C. Querido,

Arthur Z. Güth, Amana G. Garrido

et al.

Journal of Experimental Marine Biology and Ecology, Journal Year: 2024, Volume and Issue: 582, P. 152079 - 152079

Published: Dec. 31, 2024

Language: Английский

Citations

0
Constraining the importance of heterotrophic vs autotrophic feeding in photosymbiotic cnidarians DOI Open Access
Ulisse Cardini

Peer Community In Ecology, Journal Year: 2023, Volume and Issue: unknown

Published: May 13, 2023

A recommendation of: Nils Radecker, Anders Meibom Symbiotic nutrient cycling enables the long-term survival of Aiptasia in absence heterotrophic food sources https://doi.org/10.1101/2022.12.07.519152

Language: Английский

Citations

1
Deep-Sea Sponges and Corals off the Western Coast of Florida—Intracellular Mechanisms of Action of Bioactive Compounds and Technological Advances Supporting the Drug Discovery Pipeline DOI Creative Commons
Mina Iskandar, Kira M. Ruiz-Houston,

Steven D. Bracco

et al.

Marine Drugs, Journal Year: 2023, Volume and Issue: 21(12), P. 615 - 615

Published: Nov. 28, 2023

The majority of natural products utilized to treat a diverse array human conditions and diseases are derived from terrestrial sources. In recent years, marine ecosystems have proven be valuable resource that generated defend support their growth. Such sources offer large opportunity for the identification novel compounds may guide future development new drugs therapies. Using National Oceanic Atmospheric Administration (NOAA) portal, we explore deep-sea coral sponge species inhabiting segment U.S. Exclusive Economic Zone, specifically off western coast Florida. This area spans ~100,000 km2, containing at sea depths up 3000 m. Utilizing PubMed, uncovered current knowledge on gaps across subset these sessile organisms with regards mechanisms altering cytoskeleton, protein trafficking, signaling pathways. Since exploitation such could disrupt ecosystem leading supply issues would limit quantities bioactive compounds, surveyed methods technological advances necessary sustaining drug discovery pipeline including in vitro aquaculture systems preserving our ecological community future. Collectively, efforts establish foundation supporting research marine-based mechanism action develop therapies improving treatment regimens diseases.

Language: Английский

Citations

1
Microbiome depletion and recovery in the sea anemone,Exaiptasia diaphana, following antibiotic exposure DOI Creative Commons
Sophia MacVittie,

Saam Doroodian,

Aaron Alberto

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 13, 2023

Abstract Microbial species that comprise host-associated microbiomes play an essential role in maintaining and mediating the health of plants animals. While defining individual or even complex communities is important towards quantifying effect microbiome on host health, it often challenging to develop causal studies link microbial populations changes fitness. Here, we investigated impacts reduced load following antibiotic exposure fitness anemone, Exaiptasia diaphana subsequent recovery host’s microbiome. Anemones were exposed two different types solutions for three weeks subsequently held sterilized seawater a three-week period. Our results revealed both treatments overall during up one week post treatment. The observed reduction was coupled anemone biomass, halted asexual reproduction rates, treatments, partial removal anemone’s algal symbiont. Finally, our amplicon sequencing 16S rRNA gene bacterial composition only shifted treated individuals phase experiment, where also significant diversity community. work implies E. diaphana’s contributes disturbance with antibiotics leads reduced, but stable state. Importance emerging model used define cellular molecular mechanisms coral-algal symbioses. houses diverse microbiome, consisting hundreds partners undefined function. applied quantify impact as well trajectories disturbance. We showed negative fitness, does not recover its original while under aseptic conditions. Rather becomes less diverse, more consistent across individuals. because suggests they are susceptible events, possible generate gnotobiotic can be leveraged manipulation investigate health.

Language: Английский

Citations

1
Symbiotic nutrient cycling enables the long-term survival of Aiptasia in the absence of heterotrophic food sources DOI Creative Commons
Nils Rädecker, Anders Meibom

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2022, Volume and Issue: unknown

Published: Dec. 11, 2022

Abstract Phototrophic Cnidaria are mixotrophic organisms that can complement their heterotrophic diet with nutrients assimilated by algal endosymbionts. Metabolic models suggest the translocation of photosynthates and derivatives from algae may be sufficient to cover metabolic energy demands host. However, importance heterotrophy nutritional budget these holobionts remains unclear. Here, we report on long-term survival photosymbiotic anemone Aiptasia in absence food sources. Following one year starvation, anemones remained fully viable but showed an 85 % reduction biomass compared regularly fed counterparts. This shrinking was accompanied a host protein content density, indicative severe nitrogen limitation. Nonetheless, isotopic labeling experiments combined NanoSIMS imaging revealed contribution algal-derived metabolism unaffected due increase photosynthesis more efficient carbon translocation. Taken together, our results that, one- timescale, feeding is not essential fulfilling requirements holobiont. But, while symbiotic nutrient cycling effectively retains holobiont over long time scales, data critical source required for growth under oligotrophic conditions.

Language: Английский

Citations

2