DUSSARRAT, Thomas; NILO-POYANCO, Ricardo; MOYANO, Tomás; PRIGENT, Sylvain; JEFFERS, Tim; DÍAZ, Francisca; DECROS, Guillaume; AUDI, Lauren; SONDERVAN, Veronica; SHEN, Bingran; ARAUS, Viviana; ROLIN, Dominique; SHASHA, Dennis; CORUZZI, Gloria; GIBON, Yves; LATORRE, Claudio; PÉTRIACQ, Pierre; GUTIÉRREZ, Rodrigo

doi:10.1093/jxb/erae117

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DUSSARRAT, Thomas
Pontificia Universidad Católica de Chile [UC]
Biologie du fruit et pathologie [BFP]

NILO-POYANCO, Ricardo

MOYANO, Tomás
FONDAP Center for Genome Regulation [CGR]
Departamento de Genética Molecular y Microbiología

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Ce document a été publié dans

Journal of Experimental Botany. 2024-06-07, vol. 75, n° 11, p. 3596-3611

Oxford University Press (OUP)

Résumé en anglais

Abstract The best ideotypes are under mounting pressure due to increased aridity. Understanding the conserved molecular mechanisms that evolve in wild plants adapted to harsh environments is crucial in developing new strategies for agriculture. Yet our knowledge of such mechanisms in wild species is scant. We performed metabolic pathway reconstruction using transcriptome information from 32 Atacama and phylogenetically related species that do not live in Atacama (sister species). We analyzed reaction enrichment to understand the commonalities and differences of Atacama plants. To gain insights into the mechanisms that ensure survival, we compared expressed gene isoform numbers and gene expression patterns between the annotated biochemical reactions from 32 Atacama and sister species. We found biochemical convergences characterized by reactions enriched in at least 50% of the Atacama species, pointing to potential advantages against drought and nitrogen starvation, for instance. These findings suggest that the adaptation in the Atacama Desert may result in part from shared genetic legacies governing the expression of key metabolic pathways to face harsh conditions. Enriched reactions corresponded to ubiquitous compounds common to extreme and agronomic species and were congruent with our previous metabolomic analyses. Convergent adaptive traits offer promising candidates for improving abiotic stress resilience in crop species.< Réduire