2026-10-13T07:18:01Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33951334 2026-09-21T15:33:18Z category_30563 portal_1059 item_type_3 month_year_09_2026

Data from: Dovetailing the genetic, developmental and functional bases of the adaptation of stomatal traits to climate Camila Dias Medeiros (20154578) Thomas Buckley (344503) Kevin Sartori (5635961) Cyrille Violle (3244686) Denis Vile (630176) François Vasseur (630171) Leila Fletcher (25081807) Matteo Pellegrini (2078) Etienne Baron (11755076) Elena Kazakou (560394) Lawren Sack (413678) Agricultural, veterinary and food sciences Stomata Arabidopsis thaliana Climate Adaptation GWAS Biological sciences <p>Stomata, the micro-valves on leaves, regulate CO₂ uptake and water loss within and across plant species. Thus, maximum stomatal conductance, <em>g</em>_max, is a key influence on gas exchange, productivity, and growth. Yet, the adaptation of <em>g</em>_max to climate and its genetic, developmental, and functional bases have remained unclear. Here, we report on a cross-scale, integrative and synthetic study of 145 geographically diverse ecotypes of <em>Arabidopsis thaliana</em> grown in a common garden. Across ecotypes, higher <em>g</em>_max had strong, polygenic associations with colder and drier macroclimates and shorter growing seasons, consistent with adaptation for stress avoidance. Higher <em>g</em>_max was achieved developmentally through high guard cell initiation rates and small epidermal pavement cells, resulting in greater spatial allocation of the epidermal surfaces to stomata. Our results demonstrate the multi-tiered adaptation of <em>g</em>_max to climatic stress and its mechanisms across a wide-ranging model species.</p> 2026-08-27T00:00:00Z Dataset Dataset 10.5061/dryad.kprr4xhfb https://figshare.com/articles/dataset/Data_from_Dovetailing_the_genetic_developmental_and_functional_bases_of_the_adaptation_of_stomatal_traits_to_climate/33951334 CC0