Evidence map›Paper›PMID 26362606›Full record

ArticleThe Plant cell2015

Arabidopsis SEIPIN Proteins Modulate Triacylglycerol Accumulation and Influence Lipid Droplet Proliferation.

Yingqi Cai, Joel M Goodman, Michal Pyc, Robert T Mullen, John M Dyer, Kent D Chapman

Open access · greenAbstract read
In one paragraph

Article in The Plant cell, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 93 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
93citing papers in PubMed, 1 pooled it
8.9field-weighted citation impact, top 2% 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

93 citing papers in PubMed, 1 synthesis or guideline pooled it, 185 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

33 more citing papers are in PubMed but not listed here.

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 4 institutions in 2 countries.

Yingqi CaiDepartment of Biological Sciences, Center for Plant Lipid Research, University of North Texas, Denton, Texas 76203.ORCID http://orcid.org/0000-0002-0357-5809
Joel M GoodmanDepartment of Pharmacology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390.ORCID http://orcid.org/0000-0001-5483-202X
Michal PycDepartment of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1.ORCID http://orcid.org/0000-0001-8702-1661
Robert T MullenDepartment of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1.ORCID http://orcid.org/0000-0002-6915-7407
John M DyerU.S. Department of Agriculture-Agricultural Research Service, U.S. Arid-Land Agricultural Research Center, Maricopa, Arizona 85138.ORCID http://orcid.org/0000-0001-6215-0053
Kent D ChapmanDepartment of Biological Sciences, Center for Plant Lipid Research, University of North Texas, Denton, Texas 76203 chapman@unt.edu.ORCID http://orcid.org/0000-0003-0489-3072
University of Guelph · CAUniversity of North Texas · USAgricultural Research Service · USThe University of Texas Southwestern Medical Center · US

Funding

A Simple Cellular Model for LipodystrophyR01GM084210 · NIGMS · UT SOUTHWESTERN MEDICAL CENTER · PI GOODMAN, JOEL M · 2008 to 2021
$4.0M
NIGMS NIH HHS R01 GM084210NIGMS NIH HHS R01GM084210
6 · The paper itself

Abstract

The lipodystrophy protein SEIPIN is important for lipid droplet (LD) biogenesis in human and yeast cells. In contrast with the single SEIPIN genes in humans and yeast, there are three SEIPIN homologs in Arabidopsis thaliana, designated SEIPIN1, SEIPIN2, and SEIPIN3. Essentially nothing is known about the functions of SEIPIN homologs in plants. Here, a yeast (Saccharomyces cerevisiae) SEIPIN deletion mutant strain and a plant (Nicotiana benthamiana) transient expression system were used to test the ability of Arabidopsis SEIPINs to influence LD morphology. In both species, expression of SEIPIN1 promoted accumulation of large-sized lipid droplets, while expression of SEIPIN2 and especially SEIPIN3 promoted small LDs. Arabidopsis SEIPINs increased triacylglycerol levels and altered composition. In tobacco, endoplasmic reticulum (ER)-localized SEIPINs reorganized the normal, reticulated ER structure into discrete ER domains that colocalized with LDs. N-terminal deletions and swapping experiments of SEIPIN1 and 3 revealed that this region of SEIPIN determines LD size. Ectopic overexpression of SEIPIN1 in Arabidopsis resulted in increased numbers of large LDs in leaves, as well as in seeds, and increased seed oil content by up to 10% over wild-type seeds. By contrast, RNAi suppression of SEIPIN1 resulted in smaller seeds and, as a consequence, a reduction in the amount of oil per seed compared with the wild type. Overall, our results indicate that Arabidopsis SEIPINs are part of a conserved LD biogenesis machinery in eukaryotes and that in plants these proteins may have evolved specialized roles in the storage of neutral lipids by differentially modulating the number and sizes of lipid droplets.

Indexed as

Amino Acid MotifsArabidopsisArabidopsis ProteinsEndoplasmic ReticulumGene Expression Regulation, PlantGenetic Complementation TestGTP-Binding Protein gamma SubunitsLipid DropletsMembrane ProteinsMolecular Sequence DataNicotianaPhylogenyPlant LeavesPlants, Genetically ModifiedSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsArabidopsis ProteinsBSCL2 protein, humanFld1 protein, S cerevisiaeGTP-Binding Protein gamma SubunitsMembrane ProteinsSaccharomyces cerevisiae ProteinsTriglycerides

Identifiers

PMID26362606
PMCPMC4815042
OpenAlexW2186680169

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.