The pineapple genome and the evolution of CAM photosynthesis
Loading...
Authors
Ming, Ray
VanBuren, Robert
Wai, Ching M.
Tang, Haibao
Schatz, Michael C.
Bowers, John E.
Lyons, Eric
Wang, Ming-Li
Chen, Jung
Biggers, Eric
Issue Date
2015
Type
Article
Language
Keywords
HPC-Pronghorn
Alternative Title
Abstract
Pineapple (Ananas comosus (L.) Merr.) is the most economically valuable crop possessing crassulacean acid metabolism (CAM), a photosynthetic carbon assimilation pathway with high water-use efficiency, and the second most important tropical fruit. We sequenced the genomes of pineapple varieties F153 and MD2 and a wild pineapple relative, Ananas bracteatus accession CB5. The pineapple genome has one fewer ancient whole-genome duplication event than sequenced grass genomes and a conserved karyotype with seven chromosomes from before the. duplication event. The pineapple lineage has transitioned from C-3 photosynthesis to CAM, with CAM-related genes exhibiting a diel expression pattern in photosynthetic tissues. CAM pathway genes were enriched with cis-regulatory elements associated with the regulation of circadian clock genes, providing the first cis-regulatory link between CAM and circadian clock regulation. Pineapple CAM photosynthesis evolved by the reconfiguration of pathways in C-3 plants, through the regulatory neofunctionalization of preexisting genes and not through the acquisition of neofunctionalized genes via whole-genome or tandem gene duplication.
Description
Citation
Ming, R., VanBuren, R., Wai, C. M., Tang, H., Schatz, M. C., Bowers, J. E., ... Biggers, E. (2015). The pineapple genome and the evolution of CAM photosynthesis. Nature Genetics, 47(12), 1435-1442. doi:10.1038/ng.3435
Publisher
License
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported
Journal
Volume
Issue
PubMed ID
DOI
ISSN
1061-4036