Researchers have identified a new pathway by which sugar is released by symbiotic algae. This pathway involves the largely overlooked cell wall, showing that this structure not only protects the cell but plays an important role in symbiosis and carbon circulation in the ocean. The findings were reported in the journal eLife on August 18, 2023.
or other negative effects on the ecosystem. Scientists still do not understand many of the intricate processes at play when it comes to this relationship, but doing so is crucial for the preservation of coral reefs and the biodiversity they support.
"We discovered that the release of sugar occurs when the algal cell begins degrading its own cell wall," explains Shinichiro Maruyama, lead-author of the research and an associate professor at the University of Tokyo's Graduate School of Frontier Sciences."This breakdown of the cell wall happens even when a symbiotic host is absent and gets enhanced when conditions become more acidic.
The researchers also found the sugar release is mediated by the enzyme cellulase, which is known for its usage in breaking down the cell walls in land plants.
, which will further provide insights into what kind of"molecular language" is exchanged between symbionts and hosts.Yuu Ishii et al, Environmental pH signals the release of monosaccharides from cell wall in coral symbiotic alga,
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