Photosynthetic and Genetic Adaptations Underpinning the Resilience of Cistanthe longiscapa in the Atacama Desert

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dc.catalogadorgrr
dc.contributor.authorSandoval-Ibáñez, O.
dc.contributor.authorTapia-Reyes, P.
dc.contributor.authorRiveros, Anibal
dc.contributor.authorYusta, R.
dc.contributor.authorChang, S.
dc.contributor.authorOssa, P.
dc.contributor.authorNilo-Poyanco, R.
dc.contributor.authorMoreno, A.A.
dc.contributor.authorMiquel, A.
dc.contributor.authorAlmeida, A.M.
dc.contributor.authorZurita-Silva, A.
dc.contributor.authorOrellana, D.
dc.contributor.authorBaeza, C.
dc.contributor.authorBlanco-Herrera, F.
dc.contributor.authorGenova, A.D.
dc.contributor.authorAllende, M.L.
dc.contributor.authorGonzález, M.
dc.contributor.authorMaass, A.
dc.contributor.authorGutierrez Alliende, Rodrigo Hernan
dc.contributor.authorMeneses Araya, Claudio Antonio
dc.date.accessioned2025-11-18T18:09:56Z
dc.date.available2025-11-18T18:09:56Z
dc.date.issued2024
dc.description.abstractThe Atacama Desert is one of the most hostile environments for life. However, the plant species Cistanthe longiscapa (C. longiscapa) completes its life cycle in the Atacama Desert after sporadic rainfall. Physiological analyses under controlled environmental conditions revealed superior photosynthetic performance, better light acclimation mechanisms, and larger accumulation of photosystem II in C. longiscapa compared to its mesophilic sister species. C. longiscapa shows evolutionary expansions in gene families related to DNA repair, photosynthesis, and protein homeostasis. In addition, we observed substantial gene duplication and polymorphic variations between coastal and inland populations in the Atacama Desert. Finally, our assembled mitochondrial genome provides genetic information for all DNA-containing compartments of C. longiscapa. Diurnal oscillations of malic acid and time-resolved transcriptome analyses of plants harvested in the Atacama Desert indicate that C. longiscapa engages in CAM metabolism. We observed significant differences in transcripts encoding plastid-localized proteins, including those involved in carbon metabolism, light harvesting, and photoprotection, highlighting the critical role of chloroplasts in the adaptation of C. longiscapa to the Atacama Desert. Our study provides physiological and genetic evidence for the adaptations of C. longiscapa and advances our understanding of how plants can cope with extreme environmental conditions.
dc.fechaingreso.objetodigital2025-11-18
dc.format.extent77 páginas
dc.fuente.origenORCID
dc.identifier.doi10.1101/2024.12.08.627406
dc.identifier.urihttps://doi.org/10.1101/2024.12.08.627406
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/107029
dc.information.autorucFacultad de Ciencias Biológicas; Gutierrez Alliende, Rodrigo Hernan; S/I; 195518
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Meneses Araya, Claudio Antonio; 0000-0002-6452-8950; 1246418
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistabioRxiv
dc.rightsacceso abierto
dc.rights.licenseCC BY-NC 4.0 Attribution-NonCommercial 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.subjectAtacama Desert
dc.subjectCistanthe longiscapa
dc.subjectPhotosynthesis
dc.subjectGenome
dc.subjectTranscriptome
dc.subjectAbiotic stress
dc.subject.ddc570
dc.subject.deweyBiologíaes_ES
dc.titlePhotosynthetic and Genetic Adaptations Underpinning the Resilience of Cistanthe longiscapa in the Atacama Desert
dc.typepreprint
sipa.codpersvinculados195518
sipa.codpersvinculados1246418
sipa.trazabilidadORCID;2025-11-17
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