Temperature-stress resistance and tolerance along a latitudinal cline in North American Arabidopsis lyrata.

ABSTRACT: The study of latitudinal gradients can yield important insights into adaptation to temperature stress. Two strategies are available: resistance by limiting damage, or tolerance by reducing the fitness consequences of damage. Here we studied latitudinal variation in resistance and tolerance to frost and heat and tested the prediction of a trade-off between the two strategies and their costliness. We raised plants of replicate maternal seed families from eight populations of North American Arabidopsis lyrata collected along a latitudinal gradient in climate chambers and exposed them repeatedly to either frost or heat stress, while a set of control plants grew under standard conditions. When control plants reached maximum rosette size, leaf samples were exposed to frost and heat stress, and e

SUBMITTER: Wos G 

PROVIDER: S-EPMC4482397 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature