The genomics and physiology of abiotic stressors associated with global elevational gradients in Arabidopsis thaliana.

ABSTRACT: Phenotypic and genomic diversity in Arabidopsis thaliana may be associated with adaptation along its wide elevational range, but it is unclear whether elevational clines are consistent among different mountain ranges. We took a multi-regional view of selection associated with elevation. In a diverse panel of ecotypes, we measured plant traits under alpine stressors (low CO₂ partial pressure, high light, and night freezing) and conducted genome-wide association studies. We found evidence of contrasting locally adaptive regional clines. Western Mediterranean ecotypes showed low water use efficiency (WUE)/early flowering at low elevations to high WUE/late flowering at high elevations. Central Asian ecotypes showed the opposite pattern. We mapped different candidate genes for each r

SUBMITTER: Gamba D 

PROVIDER: S-EPMC11543515 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature