Phenotypic diploidization in plant functional traits uncovered by synthetic neopolyploids in Dianthus broteri.

ABSTRACT: Whole-genome duplication and post-polyploidization genome downsizing play key roles in the evolution of land plants; however, the impact of genomic diploidization on functional traits still remains poorly understood. Using Dianthus broteri as a model, we compared the ecophysiological behaviour of colchicine-induced neotetraploids (4xNeo) to diploids (2x) and naturally occurring tetraploids (4xNat). Leaf gas-exchange and chlorophyll fluorescence analyses were performed in order to asses to what extent post-polyploidization evolutionary processes have affected 4xNat. Genomic diploidization and phenotypic novelty were evident. Distinct patterns of variation revealed that post-polyploidization processes altered the phenotypic shifts directly mediated by genome doubling. The photosynthetic phen

SUBMITTER: Dominguez-Delgado JJ 

PROVIDER: S-EPMC8760854 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature