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Changes in Phenology Can Alter Patterns of Natural Selection: the Joint Evolution of Germination Time and Postgermination Traits by Michelle D'Aguillo; Kathleen Donohue is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Summary The timing of a developmental transition (phenology) can influence the environment experienced by subsequent life stages. When phenology causes an organism to occupy a particular habitat as a consequence of the developmental cues used, it can act as a form of habitat tracking. Evolutionary theory predicts that habitat tracking can alter the strength, direction, and mode of natural selection on subsequently expressed traits. To test whether germination phenology altered natural selection on postgermination traits, we manipulated germination time by planting seedlings in seven germination cohorts spanning 2 yr. We measured selection on postgermination traits relating to drought, freezing, and heat tolerance using a diverse combination of __Arabidopsis thaliana__ mutants and naturally occurring ecotypes. Germination cohorts experienced variable selection: when dry, cold, and hot environments were experienced by seedlings, selection was intensified for drought, freezing, and heat tolerance, respectively. Reciprocally, postgermination traits modified the optimal germination time; genotypes had maximum fitness after germinating in environments that matched their physiological

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Author

Michelle D'Aguillo; Kathleen Donohue

Publisher

Wiley

Published

2023

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)