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Nutrient Competition as a General Mechanism of Regulation in Photosymbiosis — arXiv:2609.37826

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.37826
License (as archived): CC0-1.0
Archived: 2026-10-07T20:42:37.973Z
SHA-256 of the archived text: e329751fb462e8cbcedc8f96dcb4fcff37627681be5223cde5c01cd8482d2e7e
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How to cite

Nutrient Competition as a General Mechanism of Regulation in Photosymbiosis — arXiv:2609.37826 — arXiv (en), https://arxiv.org/abs/2609.37826 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_d7ba3dbb375f (Metraipolis archive dc_d7ba3dbb375f, sha256 e329751fb462e8cbcedc8f96dcb4fcff37627681be5223cde5c01cd8482d2e7e)

BibTeX

@misc{dcd7ba3dbb375f,
  title = {Nutrient Competition as a General Mechanism of Regulation in Photosymbiosis — arXiv:2609.37826},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.37826},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_d7ba3dbb375f; sha256 e329751fb462e8cbcedc8f96dcb4fcff37627681be5223cde5c01cd8482d2e7e},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.37826. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Nitrogen limitation is a key mechanism regulating the mutualism between photosymbiotic cnidarians and their algal symbionts. Algal-derived photosynthate facilitates host assimilation of inorganic nitrogen, specifically ammonium. The resulting competition between symbiotic partners for inorganic nitrogen leads to a negative feedback loop wherein symbiont density is effectively controlled through facilitation of their competitor. However, it is unclear whether this feedback loop is sufficient to stabilize the interaction absent other forms of regulation. Using a generalized modeling approach, we identify the conditions under which cnidarian-algal competition for nitrogen yields dynamically stable symbioses. We show that nitrogen limitation is sufficient to stabilize the interaction through the interplay of intraspecific (symbiont-symbiont) and interspecific (host-symbiont) competition. As host assimilation of inorganic nitrogen increases, the system shifts from being stabilized by intraspecific competition between symbionts to interspecific competition between host and symbionts, necessitating a positive coupling of symbiont density to host nitrogen assimilation via photosynthate translocation for dynamic stability.

Tema degli esploratori: scienze della vita e salute (retro-catalogo arXiv: annunci del 2026-09-30 in q-bio.PE).
Categorie arXiv: Populations and Evolution (q-bio.PE).
Pagina del lavoro: https://arxiv.org/abs/2609.37826 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-07T19:53:01.883Z dalla pagina https://arxiv.org/catchup/q-bio.PE/2026-09-30?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).