Cyanobacterial interactions and symbiosis

Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 425 - 489

Опубликована: Янв. 1, 2024

Язык: Английский

---

Marine heatwave‐driven mass mortality and microbial community reorganisation in an ecologically important temperate sponge

Global Change Biology, Год журнала: 2024, Номер 30(8)

Опубликована: Авг. 1, 2024

Marine heatwaves (MHWs) are increasing in frequency, duration and intensity, disrupting global marine ecosystems. While most reported impacts have been tropical areas, New Zealand experienced its strongest longest MHW 2022, profoundly affecting sponges. Sponges vital to rocky benthic communities, with their abundance influencing ecosystem functioning. This study examines the impact of this on photosynthetic sponge Cymbastella lamellata Fiordland, Zealand. We describe extent, physiological responses, mortality, microbial community changes ecological C. lamellata. The Fiordland reached a maximum temperature 4.4°C above average, lasting for 259 days. Bleaching occurred >90% population. population size exceeded 66 million from 5 25 m, making largest bleaching event kind ever recorded. identified symbiont as diatom, bleached sponges had reduced efficiency. Post-MHW surveys 2023 found that over 50% at sampling sites died but remaining mostly recovered earlier bleaching. Using simulated experiment, we stress was driver necrosis rather than bleaching, despite only rarely being observed field (<2% sponges). suggests may not be cause mortality directly. also shift surviving sponges, which propose represents microbial-mediated adaptive response MHWs. key contributors dissolved organic carbon water column, loss likely impacting function. demonstrate potential MHWs disrupt phyla temperate regions, highlighting how susceptible globally might

Язык: Английский

---

Sponge-derived matter is assimilated by coral holobionts

Communications Biology, Год журнала: 2024, Номер 7(1)

Опубликована: Фев. 2, 2024

Abstract Coral reef biodiversity is maintained by a complex network of nutrient recycling among organisms. Sponges assimilate nutrients produced other organisms like coral and algae, releasing them as particulate dissolved matter, but to date, only single trophic link between sponge-derived matter macroalgae has been identified. We sought determine if sponge-coral exchange reciprocal using stable isotope ‘pulse-chase’ experiment trace the uptake 13 C 15 N holobiont for three species ( Acropora cervicornis, Orbicella faveolata , Eunicea flexuosa ). holobionts incorporated 2.3–26.8x more than from A. cervicornis both corals. Differential isotopic incorporation aligns with their ecophysiological characteristics (e.g., morphology, Symbiodiniaceae density). Our results elucidate pathway on reefs that implications improving aquaculture management approaches.

Язык: Английский

---

Looking for the sponge loop: analyses of detritus on a Caribbean forereef using stable isotope and eDNA metabarcoding techniques

PeerJ, Год журнала: 2024, Номер 12, С. e16970 - e16970

Опубликована: Фев. 23, 2024

Coral reefs are biodiverse ecosystems that rely on trophodynamic transfers from primary producers to consumers through the detrital pathway. The sponge loop hypothesis proposes sponges consume dissolved organic carbon (DOC) and produce large quantities of detritus coral reefs, with this turn-over approaching daily gross production reef ecosystem. In study, we collected samples in epilithic algal matrix (EAM) potential sources over two seasons forereef at Carrie Bow Cay, Belize. We chose location maximize likelihood finding support for because Caribbean have higher abundances than other tropical worldwide Mesoamerican barrier is an archetypal used stable isotope analyses eDNA metabarcoding determine composition detritus. determined EAM was derived a variety benthic pelagic sources, (micro- macroalgae) as major contributors metazoans (Arthropoda, Porifera, Cnidaria, Mollusca) minor contributors. None species reportedly were present cnidarian signature dominated by octocorals, scarcity hard corals. also varied seasonally. negligible contribution contrasts pathway originally proposed hypothesis. findings indicate mix calmer summer primarily more turbulent spring.

Язык: Английский

---

Protein Phosphorylation Nexus of Cyanobacterial Adaptation and Metabolism

Kinases and Phosphatases, Год журнала: 2024, Номер 2(2), С. 209 - 223

Опубликована: Июнь 20, 2024

Protein phosphorylation serves as a fundamental regulatory mechanism to modulate cellular responses environmental stimuli and plays crucial role in orchestrating adaptation metabolic homeostasis various diverse organisms. In cyanobacteria, an ancient phylum of significant ecological biotechnological relevance, protein emerges central axis mediating adaptive that are essential for survival growth. This exhaustive review thoroughly explores the complex terrain cyanobacterial metabolism, illustrating its forms functional implications. Commencing with overview physiology historical trajectory research prokaryotes, this navigates through mechanisms two-component sensory systems their interplay phosphorylation. Furthermore, it investigates different feeding modes cyanobacteria highlights between photoautotrophy, variables, susceptibility photo-inhibition. The elucidation coordinating light harvesting acquisition inorganic nutrients underscores importance physiology. novelty by synthesizing existing knowledge proposing future trajectories, thereby contributing deeper regulation

Язык: Английский

---

Harnessing solar power: photoautotrophy supplements the diet of a low-light dwelling sponge

The ISME Journal, Год журнала: 2022, Номер 16(9), С. 2076 - 2086

Опубликована: Июнь 2, 2022

Abstract The ability of organisms to combine autotrophy and heterotrophy gives rise one the most successful nutritional strategies on Earth: mixotrophy. Sponges are integral members shallow-water ecosystems many host photosynthetic symbionts, but studies mixotrophic sponges have focused primarily species residing in high-light environments. Here, we quantify contribution photoautotrophy respiratory demand total carbon diet sponge Chondrilla caribensis, which hosts symbiotic cyanobacteria lives low-light Although is net heterotrophic at 20 m water depth, photosynthetically fixed potentially provides up 52% holobiont’s demand. When considering diet, contributed an estimated 7% daily uptake. Visualization inorganic 13C- 15N-incorporation using nanoscale secondary ion mass spectrometry (NanoSIMS) single-cell level confirmed that a portion nutrients assimilated by prokaryotic community was translocated cells. Photoautotrophy can thus provide important supplemental source for sponges, even habitats. This trophic plasticity may represent widespread strategy hosting photosymbionts, enabling buffer against periods stress.

Язык: Английский

---

Stability of the Microbiome of the Sponge Mycale (Oxymycale) acerata in the Western Antarctic Peninsula

Frontiers in Microbiology, Год журнала: 2022, Номер 13

Опубликована: Апрель 4, 2022

The sponge microbiome, especially in Low Microbial Abundance (LMA) species, is expected to be influenced by the local environment; however, contrasting results exist with evidence showing that host specificity also important, hence suggesting microbiome host-specific and environmental factors. Despite sponges being important members of Southern Ocean benthic communities, their relationships microbial communities they remain poorly studied. Here, we studied spatial temporal patterns microbiota associated ecologically LMA

Язык: Английский

---

Novel Gene Clusters for Secondary Metabolite Synthesis in Mesophotic Sponge‐Associated Bacteria

Microbial Biotechnology, Год журнала: 2025, Номер 18(2)

Опубликована: Фев. 1, 2025

ABSTRACT Mesophotic coral ecosystems (MCEs) host a diverse array of sponge species, which represent promising source bioactive compounds. Increasing evidence suggests that sponge‐associated bacteria may be the primary producers these However, cultivating under laboratory conditions remains significant challenge. To investigate rich resource compounds synthesised by mesophotic bacteria, we retrieved 429 metagenome‐assembled genomes (MAGs) from 15 sponges, revealing strong correlation between bacterial diversity and species. Furthermore, identified 1637 secondary metabolite biosynthetic gene clusters (BGCs) within MAGs. Among BGCs, terpenes were most abundant (495), followed 369 polyketide synthases (PKSs), 293 ribosomally post‐translationally modified peptides (RiPPs) 135 nonribosomal peptide synthetases (NRPSs). The BGCs classified into 1086 cluster families (GCFs) based on sequence similarity. Notably, only five GCFs included experimentally validated reference Minimum Information about Biosynthetic Gene database (MIBiG). Additionally, an unusual abundance was detected in Entotheonella sp. (s191209.Bin93) Tectomicrobia phylum. In contrast, members Proteobacteria Acidobacteriota harboured fewer (6–7 average), yet their high MCE sponges potentially reservoir BGCs. Analysis BGC distribution patterns revealed subset including terpene (FAM_00447 FAM_01046), PKS GCF (FAM_00235), RiPPs (FAM_01143), widespread across sponges. 32 consistently present same MAGs different highlighting potential key biological roles capacity to yield novel This study not underscores untapped as but also provides valuable insights intricate interactions symbiotic microbial communities.

Язык: Английский

---

Complete genome sequencing and antibiofilm activity of an endophytic bacterium associated with marine sponge Hyrtios erectus collected from the Red Sea

Frontiers in Marine Science, Год журнала: 2025, Номер 12

Опубликована: Май 14, 2025

Genome sequences of sponge bacterial endophytes will be useful for understanding the bioactive compound synthetic potential and molecular mechanisms sponge-bacteria interactions. In this study, complete genome bacterium E9 isolated from Red Sea species was sequenced its antibiofilm activity assessed through laboratory assay. Experiments indicated strong antibacterial extracts E9. Complete sequencing reveals that assembly generated a single chromosome 2123451 base pairs with guanine-cytosine (GC) content 32.9% 2420 protein coding gene/genome ratio 83.7%. The strain identified as Staphylococcus epidermidis based on phylogenetic analysis. A total 9 biosynthetic gene clusters were in using open-source platform AntiSMASH. observed may due presence such nonribosomal peptides, lasso peptides terpenes. Overall, whole analysis bacterium’s capability to adapt diverse environments including invertebrate hosts, synthesis.

Язык: Английский

---

Potential Utilization of Bacterial Consortium of Symbionts Marine Sponges in Removing Polyaromatic Hydrocarbons and Heavy Metals, Review

Biology, Год журнала: 2023, Номер 12(1), С. 86 - 86

Опубликована: Янв. 5, 2023

Toxic materials in waste generally contain several components of the global trending pollutant category, especially PAHs and heavy metals. Bioremediation technology for management that utilizes microorganisms (bacteria) has not been fully capable breaking down these toxic into simple environmentally friendly chemical products. This review paper examines potential application a consortium marine sponge symbionts with high performance efficiency removing metal contaminants. The method was carried out through related research articles by author published other researchers. results study conclude development (GTP) bioremediation could be to increase remediation. Several types symbiont bacteria, hydrocarbonoclastic (R-1), metalloclastic (R-2), metallo-hydro-carbonoclastic (R-3), have applied improve removal performance. A crystalline bacterial preparations is required mobilize GTP-exposed sites rapidly. Bacterial sponges can traced mainly sea sponges, whose body surface covered mucus.

Язык: Английский

---