Evidence map›Paper›PMID 21263039›Full record

ArticlePlant physiology2011

Resolving the compartmentation and function of C4 photosynthesis in the single-cell C4 species Bienertia sinuspersici.

Sascha Offermann, Thomas W Okita, Gerald E Edwards

Open access · greenAbstract read
In one paragraph

Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
1.9field-weighted citation impact, top 15% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 52 citations in OpenAlex.

  1. A novel single-cell NAD-ME CThe New phytologist · 2026
    Article
  2. Molecular phylogenetics and evolutionary history ofFrontiers in plant science · 2026
    Review
  3. Review
  4. Investigating theProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  5. Investigating thebioRxiv : the preprint server for biology · 2024
    Article
  6. Diversification of Plastid Structure and Function in Land Plants.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  7. Article
  8. Article
  9. PeerJ · 2023
    Article
  10. Article
  11. Article
  12. Review
  13. The Developmental Enhancement of a CFrontiers in plant science · 2020
    Article
  14. Article
  15. Article
  16. Article
  17. EfficientFrontiers in plant science · 2019
    Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Sascha OffermannSchool of Biological Sciences, Washington State University, Pullman, Washington 99164, USA.
Thomas W Okita
Gerald E Edwards
Washington State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bienertia sinuspersici is a land plant known to perform C(4) photosynthesis through the location of dimorphic chloroplasts in separate cytoplasmic domains within a single photosynthetic cell. A protocol was developed with isolated protoplasts to obtain peripheral chloroplasts (P-CP), a central compartment (CC), and chloroplasts from the CC (C-CP) to study the subcellular localization of photosynthetic functions. Analyses of these preparations established intracellular compartmentation of processes to support a NAD-malic enzyme (ME)-type C(4) cycle. Western-blot analyses indicated that the CC has Rubisco from the C(3) cycle, the C(4) decarboxylase NAD-ME, a mitochondrial isoform of aspartate aminotransferase, and photorespiratory markers, while the C-CP and P-CP have high levels of Rubisco and pyruvate, Pidikinase, respectively. Other enzymes for supporting a NAD-ME cycle via an aspartate-alanine shuttle, carbonic anhydrase, phosophoenolpyruvate carboxylase, alanine, and an isoform of aspartate aminotransferase are localized in the cytosol. Functional characterization by photosynthetic oxygen evolution revealed that only the C-CP have a fully operational C(3) cycle, while both chloroplast types have the capacity to photoreduce 3-phosphoglycerate. The P-CP were enriched in a putative pyruvate transporter and showed light-dependent conversion of pyruvate to phosphoenolpyruvate. There is a larger investment in chloroplasts in the central domain than in the peripheral domain (6-fold more chloroplasts and 4-fold more chlorophyll). The implications of this uneven distribution for the energetics of the C(4) and C(3) cycles are discussed. The results indicate that peripheral and central compartment chloroplasts in the single-cell C(4) species B. sinuspersici function analogous to mesophyll and bundle sheath chloroplasts of Kranz-type C(4) species.

Indexed as

PhotosynthesisAmaranthaceaeChlorophyllChloroplastsOxygenPlant ProteinsChlorophyllOxygenPlant Proteins

Identifiers

PMID21263039
PMCPMC3091117
OpenAlexW2061387707

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.