Phloem wedges in Malpighiaceae: origin, structure, diversification, and systematic relevance.

ABSTRACT:

Background

Phloem wedges furrowing the wood are one of the most notorious, widespread types of cambial variants in Angiosperms. Many lianas in Malpighiaceae show these variations in the arrangement of the secondary tissues. Here we explore their ontogeny, structure, and evolution in Malpighiaceae, where phloem wedges appeared multiple times, showing how they have contributed to the anatomical diversification of the family. Using a broad sampling with 143 species from 50 genera, covering all major lineages in Malpighiaceae, we crossed data from ontogeny, stem anatomy, and phylogenetic comparative methods to determine ontogenetic trajectories, final anatomical architectures, and evolution within the most recent phylogeny for the family.

Results

Phloem wedges appeared exclusive

SUBMITTER: Quintanar-Castillo A 

PROVIDER: S-EPMC9052467 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature