Semilichen, an unjustly neglected symbiotic system between green biofilms and true lichens

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F25%3A43910776" target="_blank" >RIV/60076658:12310/25:43910776 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/25:10515713

Výsledek na webu

<a href="https://www.nature.com/articles/s41598-025-30542-z" target="_blank" >https://www.nature.com/articles/s41598-025-30542-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-025-30542-z" target="_blank" >10.1038/s41598-025-30542-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Semilichen, an unjustly neglected symbiotic system between green biofilms and true lichens

Popis výsledku v původním jazyce

Symbiotic systems of photosynthetic microorganisms and fungi are widespread in terrestrial biomes and lichens are probably the most advanced and complex. Conversely, the least complex systems are &quot;green biofilms&quot; with a completely unexplored mycobiome. We describe here a new system intermediate between green biofilms and lichens-semilichens. Light and fluorescence microscopy, eDNA sequencing, molecular phylogeny, Chlorophyll a fluorescence and C-13 labelling/metabolomics were used to study algal and fungal identity, morphology and physiology of the symbiosis. Tight contact between algae and a single predominant fungus (mycobiont) is revealed in semilichens. The algae are from the symbiotic lineages of Trebouxiophyceae and Ulvophyceae, the fungi belong to Arthoniomycetes, Dothideomycetes, Eurotiomycetes, Lecanoromycetes and Lichinomycetes. Algae are alive and perform substantial photosynthetic activity. C-13 labelled photosynthates are partially converted into specific fungal polyols (arabitol, mannitol) demonstrating the C-flow from algae to fungi. The new symbiotic system was defined and compared with other terrestrial algal-fungal symbioses. It is characterized by minimalist environmental requirements and extremely low production of biomass. As a result, it also inhabits environments unfavourable for lichens. Our research supports the hypothesis that the long-term existence of algae and fungi in terrestrial conditions affected by frequent and repeated drying is likely dependent on their mutual coexistence.

Název v anglickém jazyce

Semilichen, an unjustly neglected symbiotic system between green biofilms and true lichens

Popis výsledku anglicky

Symbiotic systems of photosynthetic microorganisms and fungi are widespread in terrestrial biomes and lichens are probably the most advanced and complex. Conversely, the least complex systems are &quot;green biofilms&quot; with a completely unexplored mycobiome. We describe here a new system intermediate between green biofilms and lichens-semilichens. Light and fluorescence microscopy, eDNA sequencing, molecular phylogeny, Chlorophyll a fluorescence and C-13 labelling/metabolomics were used to study algal and fungal identity, morphology and physiology of the symbiosis. Tight contact between algae and a single predominant fungus (mycobiont) is revealed in semilichens. The algae are from the symbiotic lineages of Trebouxiophyceae and Ulvophyceae, the fungi belong to Arthoniomycetes, Dothideomycetes, Eurotiomycetes, Lecanoromycetes and Lichinomycetes. Algae are alive and perform substantial photosynthetic activity. C-13 labelled photosynthates are partially converted into specific fungal polyols (arabitol, mannitol) demonstrating the C-flow from algae to fungi. The new symbiotic system was defined and compared with other terrestrial algal-fungal symbioses. It is characterized by minimalist environmental requirements and extremely low production of biomass. As a result, it also inhabits environments unfavourable for lichens. Our research supports the hypothesis that the long-term existence of algae and fungi in terrestrial conditions affected by frequent and repeated drying is likely dependent on their mutual coexistence.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Scientific Reports

ISSN

2045-2322

e-ISSN

2045-2322

Svazek periodika

16

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

nestránkováno

Kód UT WoS článku

001658421000004

EID výsledku v databázi Scopus

2-s2.0-105027212996