Phylogenomics resolves deep subfamilial relationships in Malvaceae s.l

Area of Science:

• Botany
• Plant Phylogenetics
• Molecular Evolution

Background:

• Malvaceae s.l., a diverse family in Malvales, includes economically vital crops like cotton and cacao.
• Existing phylogenetic analyses have not fully resolved relationships among its nine subfamilies, especially within the /Malvadendrina lineage.

Purpose of the Study:

• To clarify the phylogenetic relationships within the major clades of Malvaceae s.l.
• To provide a robust evolutionary framework for the Malvaceae family.

Main Methods:

• Phylogenomic analysis using plastid genomes from 48 accessions covering all subfamilies.
• Maximum likelihood and Bayesian inference methods were employed to reconstruct the phylogeny.

Main Results:

• A fully resolved and well-supported phylogenetic tree for Malvaceae s.l. was recovered.
• The study confirmed the split into /Byttneriina (/Grewioideae +/Byttnerioideae) and /Malvadendrina.
• The internal relationships within /Malvadendrina were elucidated, with specific subfamilies occupying distinct branching positions.

Conclusions:

• The resolved phylogeny provides a foundational framework for future evolutionary and taxonomic studies in Malvaceae.
• The findings contribute to understanding the evolutionary history and diversification of this significant plant family.