Fungal Endophytes Enhance the Photoprotective Mechanisms and Photochemical Efficiency in the Antarctic Colobanthus quitensis (Kunth) Bartl. Exposed to UV-B Radiation

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dc.contributor.authorBarrera, Andrea
dc.contributor.authorHereme, Rasme
dc.contributor.authorRuiz Lara, Simon
dc.contributor.authorLarrondo, Luis F.
dc.contributor.authorGundel, Pedro E.
dc.contributor.authorPollmann, Stephan
dc.contributor.authorMolina Montenegro, Marco A.
dc.contributor.authorRamos, Patricio
dc.date.accessioned2024-01-10T12:39:09Z
dc.date.available2024-01-10T12:39:09Z
dc.date.issued2020
dc.description.abstractAntarctic plants have developed mechanisms to deal with one or more adverse factors which allow them to successfully survive such extreme environment. Certain effective mechanisms to face adverse stress factors can arise from the establishment of functional symbiosis with endophytic fungi. In this work, we explored the role of fungal endophytes on host plant performance under high level of UV-B radiation, a harmful factor known to damage structure and function of cell components. In order to unveil the underlying mechanisms, we characterized the expression of genes associated to UV-B photoreception, accumulation of key flavonoids, and physiological responses of Colobanthus quitensis plants with (E+) and without (E-) fungal endophytes, under contrasting levels of UV-B radiation. The deduced proteins of CqUVR8, CqHY5, and CqFLS share the characteristic domains and display high degrees of similarity with other corresponding proteins in plants. Endophyte symbiotic plants showed lower lipid peroxidation and higher photosynthesis efficiency under high UV-B radiation. In comparison with E-, E+ plants showed lower CqUVR8, CqHY5, and CqFLS transcript levels. The content of quercetin, a ROS-scavenger flavonoid, in leaves of E- plants exposed to high UV-B was almost 8-fold higher than that in E+ plants 48 h after treatment. Our results suggest that endophyte fungi minimize cell damage and boost physiological performance in the Antarctic plants increasing the tolerance to UV-B radiation. Fungal endophytes appear as fundamental biological partners for plants to cope with the highly damaging UV-B radiation of Antarctica.
dc.description.funderChilean Antarctic Institute (INACH)
dc.description.funderFONDECYT
dc.description.funderREDES from Conicyt
dc.fechaingreso.objetodigital2024-05-23
dc.format.extent13 páginas
dc.fuente.origenWOS
dc.identifier.doi10.3389/fevo.2020.00122
dc.identifier.issn2296-701X
dc.identifier.urihttps://doi.org/10.3389/fevo.2020.00122
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77152
dc.identifier.wosidWOS:000536648600001
dc.information.autorucCiencias Biológicas;Larrondo Castro Luis Fernando;S/I;3629
dc.language.isoen
dc.nota.accesocontenido completo
dc.publisherFRONTIERS MEDIA SA
dc.revistaFRONTIERS IN ECOLOGY AND EVOLUTION
dc.rightsacceso abierto
dc.subjectUV-B stress
dc.subjectAntarctica
dc.subjectColobanthus quitensis
dc.subjectmolecular response
dc.subjectflavonols
dc.subjectfungal endophytes
dc.subjectULTRAVIOLET-RADIATION
dc.subjectPIRIFORMOSPORA INDICA
dc.subjectANTIOXIDANT ENZYMES
dc.subjectDROUGHT TOLERANCE
dc.subjectGENE-EXPRESSION
dc.subjectBIOSYNTHESIS
dc.subjectPLANTS
dc.subjectL.
dc.subjectACCUMULATION
dc.subjectPERFORMANCE
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleFungal Endophytes Enhance the Photoprotective Mechanisms and Photochemical Efficiency in the Antarctic Colobanthus quitensis (Kunth) Bartl. Exposed to UV-B Radiation
dc.typeartículo
dc.volumen8
sipa.codpersvinculados3629
sipa.indexWOS
sipa.trazabilidadCarga SIPA;09-01-2024
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