Phylogenomic analysis clarifies the evolutionary origin of Coffea arabica L.

BioRxiv : the Preprint Server for Biology
Yves BawinS. Janssens

Abstract

Interspecific hybridization events have played a major role in plant speciation, yet, the evolutionary origin of hybrid species often remains enigmatic. Here, we inferred the evolutionary origin of the allotetraploid species Coffea arabica, which is widely cultivated for Arabica coffee production. We estimated genetic distances between C. arabica and all species that are known to be closely related to C. arabica using genotyping-by-sequencing (GBS) data. In addition, we reconstructed a time-calibrated multilabeled phylogenetic tree of 24 species to infer the age of the C. arabica hybridization event. Ancestral states of self-compatibility were also reconstructed to infer the evolution of self-compatibility in Coffea. C. canephora and C. eugenioides were confirmed as the putative progenitor species of C. arabica. These species most likely hybridized between 1.08 million and 543 thousand years ago. We inferred the phylogenetic relationships between C. arabica and its closest relatives and shed new light on the evolution of self-compatibility in Coffea. Furthermore, the age of the hybridization event coincides with periods of environmental upheaval, which may have induced range shifts of the progenitor species that facilitated ...Continue Reading

Related Concepts

Metabolic Process, Cellular
Respirator, Surgical, Combination Product
Bioelectricity
MRNA Maturation
Electrochemical Techniques
Cell Respiration
Biologic Development
Anaerobic Respiration
Metabolic Pathway
Respiratory Gaseous Exchange in Organisms

Related Feeds

BioRxiv & MedRxiv Preprints

BioRxiv and MedRxiv are the preprint servers for biology and health sciences respectively, operated by Cold Spring Harbor Laboratory. Here are the latest preprint articles (which are not peer-reviewed) from BioRxiv and MedRxiv.

Biofilm & Infectious Disease

Biofilm formation is a key virulence factor for a wide range of microorganisms that cause chronic infections.Here is the latest research on biofilm and infectious diseases.