Evidence map›Paper›PMID 26896851›Full record

ArticleJournal of experimental botany2016

Comparative cell-specific transcriptomics reveals differentiation of C4 photosynthesis pathways in switchgrass and other C4 lineages.

Xiaolan Rao, Nan Lu, Guifen Li, Jin Nakashima, Yuhong Tang, Richard A Dixon

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of experimental botany, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Review
  5. Article
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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

6 authors at 2 institutions in 1 country.

Xiaolan RaoDepartment of Biological Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA BioEnergy Science Center (BESC), US Department of Energy, Oak Ridge, TN 37831, USA.
Nan LuDepartment of Biological Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA.
Guifen LiSamuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK 73401, USA.
Jin NakashimaSamuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK 73401, USA.
Yuhong TangBioEnergy Science Center (BESC), US Department of Energy, Oak Ridge, TN 37831, USA Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, OK 73401, USA.
Richard A DixonDepartment of Biological Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA BioEnergy Science Center (BESC), US Department of Energy, Oak Ridge, TN 37831, USA richard.dixon@unt.edu.
Noble Research Institute · USUniversity of North Texas · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Almost all C4 plants require the co-ordination of the adjacent and fully differentiated cell types, mesophyll (M) and bundle sheath (BS). The C4 photosynthetic pathway operates through two distinct subtypes based on how malate is decarboxylated in BS cells; through NAD-malic enzyme (NAD-ME) or NADP-malic enzyme (NADP-ME). The diverse or unique cell-specific molecular features of M and BS cells from separate C4 subtypes of independent lineages remain to be determined. We here provide an M/BS cell type-specific transcriptome data set from the monocot NAD-ME subtype switchgrass (Panicum virgatum). A comparative transcriptomics approach was then applied to compare the M/BS mRNA profiles of switchgrass, monocot NADP-ME subtype C4 plants maize and Setaria viridis, and dicot NAD-ME subtype Cleome gynandra. We evaluated the convergence in the transcript abundance of core components in C4 photosynthesis and transcription factors to establish Kranz anatomy, as well as gene distribution of biological functions, in these four independent C4 lineages. We also estimated the divergence between NAD-ME and NADP-ME subtypes of C4 photosynthesis in the two cell types within C4 species, including differences in genes encoding decarboxylating enzymes, aminotransferases, and metabolite transporters, and differences in the cell-specific functional enrichment of RNA regulation and protein biogenesis/homeostasis. We suggest that C4 plants of independent lineages in both monocots and dicots underwent convergent evolution to establish C4 photosynthesis, while distinct C4 subtypes also underwent divergent processes for the optimization of M and BS cell co-ordination. The comprehensive data sets in our study provide a basis for further research on evolution of C4 species.

Indexed as

Cell DifferentiationPhylogenyBiological TransportCarbonCell SeparationChromosome MappingGene Expression Regulation, PlantHigh-Throughput Nucleotide SequencingIn Situ HybridizationMalate DehydrogenaseMesophyll CellsModels, BiologicalPanicumPhotosynthesisPlant LeavesPlant ProteinsCarbonMalate Dehydrogenasemalate dehydrogenase-(oxaloacetate-decarboxylating) (NAD+)malate dehydrogenase (oxaloacetate-decarboxylating) (NADP+)Plant ProteinsRNA, MessengerTranscription FactorsC4 photosynthesiscarbon fixationcell-specific transcriptomicscomparative transcriptomicsswitchgrass.

Identifiers

PMID26896851
PMCPMC4783356
OpenAlexW2274679434

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.