ArticleJournal of experimental botany2014
Shared origins of a key enzyme during the evolution of C4 and CAM metabolism.
Article in Journal of experimental botany, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
38 citing papers in PubMed, 103 citations in OpenAlex.
- Open questions on facultative C4-CAM photosynthesis in Portulaca.Journal of experimental botany · 2026Review
- Regulation of Crassulacean acid metabolism at the protein level in Kalanchoë laxiflora.Plant physiology · 2025Article
- CAM evolution is associated with gene family expansion in an explosive bromeliad radiation.The Plant cell · 2024Article
- Genomic and Transcriptomic Insights into the Evolution of C4 Photosynthesis in Grasses.Genome biology and evolution · 2024Article
- CBMC genomics · 2024Article
- The diverse diaspora of CAM: a pole-to-pole sketch.Annals of botany · 2023Review
- The CAM lineages of planet Earth.Annals of botany · 2023Article
- Alloteropsis semialata as a study system for C4 evolution in grasses.Annals of botany · 2023Article
- Gene duplications facilitate C4-CAM compatibility in common purslane.Plant physiology · 2023Article
- Detection and Quantification of Botanical Impurities in Commercial Oregano (Foods (Basel, Switzerland) · 2023Article
- Differential timing of gene expression and recruitment in independent origins of CAM in the Agavoideae (Asparagaceae).The New phytologist · 2022Article
- Spatial resolution of an integrated CScience advances · 2022Article
- Gene co-expression reveals the modularity and integration of C4 and CAM in Portulaca.Plant physiology · 2022Article
- Article
- Russ Monson and the evolution of COecologia · 2021Review
- Exploring CScientific reports · 2020Article
- The Development of Crassulacean Acid Metabolism (CAM) Photosynthesis in Cotyledons of the CPlants (Basel, Switzerland) · 2020Article
- Operating at the very low end of the crassulacean acid metabolism spectrum: Sesuvium portulacastrum (Aizoaceae).Journal of experimental botany · 2019Article
- Facultative crassulacean acid metabolism in a C3-C4 intermediate.Journal of experimental botany · 2019Article
- Comparative genomics can provide new insights into the evolutionary mechanisms and gene function in CAM plants.Journal of experimental botany · 2019Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors at 8 institutions in 6 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
CAM and C4 photosynthesis are two key plant adaptations that have evolved independently multiple times, and are especially prevalent in particular groups of plants, including the Caryophyllales. We investigate the origin of photosynthetic PEPC, a key enzyme of both the CAM and C4 pathways. We combine phylogenetic analyses of genes encoding PEPC with analyses of RNA sequence data of Portulaca, the only plants known to perform both CAM and C4 photosynthesis. Three distinct gene lineages encoding PEPC exist in eudicots (namely ppc-1E1, ppc-1E2 and ppc-2), one of which (ppc-1E1) was recurrently recruited for use in both CAM and C4 photosynthesis within the Caryophyllales. This gene is present in multiple copies in the cacti and relatives, including Portulaca. The PEPC involved in the CAM and C4 cycles of Portulaca are encoded by closely related yet distinct genes. The CAM-specific gene is similar to genes from related CAM taxa, suggesting that CAM has evolved before C4 in these species. The similar origin of PEPC and other genes involved in the CAM and C4 cycles highlights the shared early steps of evolutionary trajectories towards CAM and C4, which probably diverged irreversibly only during the optimization of CAM and C4 phenotypes.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.