Integrative analysis of CAM photosynthesis reveals its impact on primary metabolism in Yucca

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ID: 314213
2026
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Abstract
Abstract Crassulacean Acid Metabolism (CAM) is an adaptation that temporally separates carbon uptake at night from photosynthesis during the day. CAM has evolved repeatedly across vascular plants, as its emergence may depend on simple regulatory changes to deeply conserved metabolic pathways. Modern CAM research relies heavily on interpretation of transcriptomic data, though regulation occurs at multiple levels following transcription. Additionally, while most research to date has focused on a handful of genes and metabolites in the core CAM pathway, the co-option of conserved regulatory and functional genes is bound to have wide ranging effects on other aspects of primary metabolism. In this study, we integrate transcriptomic, proteomic, and metabolomic data to compare primary metabolism between the CAM species Yucca aloifolia and closely related C3 species, Y. filamentosa. We observe minimal correlation between protein abundance and mRNA expression, suggesting significant post-transcriptional regulation in CAM species. We also find evidence of shifts in gene expression and metabolite accumulation outside of the central CAM pathway suggesting that the shift to CAM has cascading effects across primary metabolism, especially nitrogen metabolism. Our findings provide insights into the metabolic shifts associated with CAM evolution and highlight the complexity of its regulation at multiple biological levels.
Reference Key
openalex_W7161790628 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors David Wickell, Richard Field, Karl Weitz, Rosalie Chu, Jesse Trejo, Nikola Tolić, Nathalie Munoz Munoz, Hope Hundley, Emily Savage, Lipzen Anna, Jim Leebens‐Mack, Karolina Heyduk
Journal Journal of experimental botany
Year 2026
DOI
10.1093/jxb/erag234
URL
https://doi.org/10.1093/jxb/erag234
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