Inhibiting inositol transport disrupts metabolite profiles and mimics heat stress in a model cnidarian-Symbiodiniaceae symbiosis

Communications Biology, Journal Year: 2025, Volume and Issue: 8(1)

Published: May 15, 2025

The nutrient exchange between corals and their symbiotic microalgae (Symbiodiniaceae) is vital for coral survival. Disruptions in this mutualistic relationship, often due to stress-induced dysbiosis, contribute significantly mortality reef decline globally. Dysbiosis associated with substantial shifts various metabolites, notably a rise inositol, sugar alcohol, though its role coral-algae interactions remains unclear. Using cnidarian model, we identify Symbiodiniaceae as the main source of myo- scyllo-inositol being dominant forms under normal conditions. During heat stress, levels increase by 1.8 times hosts, up 26 cultured (Breviolum minutum). Meanwhile, myo-inositol decreases host tissues but doubles within Symbiodiniaceae, indicating altered nutrient-sharing or stress signalling. In contrast, no changes are observed aposymbiotic cnidarians (without Symbiodiniaceae). Additionally, inhibiting inositol production transport disrupts metabolite profiles, mimicking effects seen suggesting that crucial maintaining metabolic balance exchange. These findings reveal disruptions dynamics play critical responses, offering insights into dysbiosis mechanisms driving crises.

Language: Английский

Reproductive resilience: pathways to gametogenic success in Montipora capitata after bleaching

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 13, 2024

Thermal bleaching, or the loss of symbiotic algae that provide most energetic resources for coral host, is an increasing threat to reefs worldwide and projected worsen with climate change. While bleaching a well-recognized threat, impact on process reproduction in survivors not well resolved, despite being central resilience. Montipora capitata can survive while completing full gametogenic cycle, offering ideal system study resilience physiological tradeoffs. We experimentally bleached fragments M. colonies followed their gametogenesis responses 10 months (six time points). All produced gametes at same as controls, suggesting reproductive processes were energetically prioritized. However, proteomic analysis revealed tradeoffs delays activating key earlier areas such skeletal growth hormone synthesis. Tradeoffs during likely direct response thermal resulted smaller oocytes from colonies, potentially indicating decreased transfer parental gametes. continue this species, it unknown how fecundity, synchrony spawning, viability success future offspring may be impacted by events.

Language: Английский

Reproductive Resilience: Pathways to Gametogenic Success in Montipora capitata after Bleaching

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: July 12, 2024

Thermal bleaching, or the loss of symbiotic algae that provide most energetic resources for coral host, is an increasing threat to reefs worldwide and projected worsen with climate change. While bleaching a well-recognized threat, impact on process reproduction in survivors not well resolved, despite being central resilience. Montipora capitata can survive while completing full gametogenic cycle, offering ideal system study resilience physiological tradeoffs. We experimentally bleached fragments M. colonies followed their gametogenesis responses 10 months (six time points). All produced gametes at same as controls, suggesting reproductive processes were energetically prioritized. However, proteomic analysis revealed tradeoffs delays activating key earlier areas such skeletal growth hormone synthesis. Tradeoffs during likely direct response thermal resulted smaller oocytes from colonies, potentially indicating decreased transfer parental gametes. continue this species, it unknown how viability success future offspring may be impacted by events.

Language: Английский