Diversity in nonlinear responses to soil moisture shapes evolutionary constraints in Brachypodium.

ABSTRACT: Water availability is perhaps the greatest environmental determinant of plant yield and fitness. However, our understanding of plant-water relations is limited because-like many studies of organism-environment interaction-it is primarily informed by experiments considering performance at two discrete levels-wet and dry-rather than as a continuously varying environmental gradient. Here, we used experimental and statistical methods based on function-valued traits to explore genetic variation in responses to a continuous soil moisture gradient in physiological and morphological traits among 10 genotypes across two species of the model grass genus Brachypodium. We find that most traits exhibit significant genetic variation and nonlinear responses to soil moisture variability. We also observe d

SUBMITTER: Monroe JG 

PROVIDER: S-EPMC8664479 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature