Evidence map›Paper›PMID 20423525›Full record

ArticleBMC genomics2010

EST analysis reveals putative genes involved in glycyrrhizin biosynthesis.

Ying Li, Hong-Mei Luo, Chao Sun, Jing-Yuan Song, Yong-Zhen Sun, Qiong Wu, Ning Wang, Hui Yao, André Steinmetz, Shi-Lin Chen

Open access · goldAbstract read
In one paragraph

Article in BMC genomics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
14.6field-weighted citation impact, top 1% 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

46 citing papers in PubMed, 102 citations in OpenAlex.

  1. Article
  2. Biosynthesis of Camphane Volatile Terpenes inPlants (Basel, Switzerland) · 2025
    Article
  3. Article
  4. Regulation of gene expression in the secondary metabolic synthesis pathway ofPhysiology and molecular biology of plants : an international journal of functional plant biology · 2024
    Article
  5. RNA sequencing analysis revealsHorticulture research · 2024
    Article
  6. Article
  7. Article
  8. The sugar donor specificity of plant family 1 glycosyltransferases.Frontiers in bioengineering and biotechnology · 2024
    Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Frontiers in plant science · 2022
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Metabolic Engineering for Glycyrrhetinic Acid Production inFrontiers in bioengineering and biotechnology · 2020
    Review
  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

10 authors at 2 institutions in 2 countries.

Ying LiInstitute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, No,151, Malianwa North Road, HaiDian District, Beijing 100193, China.
Hong-Mei Luo
Chao Sun
Jing-Yuan Song
Yong-Zhen Sun
Qiong Wu
Ning Wang
Hui Yao
André Steinmetz
Shi-Lin Chen
Chinese Academy of Medical Sciences & Peking Union Medical College · CNLaboratoire National de Santé · LU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGlycyrrhiza uralensis is one of the most popular medicinal plants in the world and is also widely used in the flavoring of food and tobacco. Due to limited genomic and transcriptomic data, the biosynthetic pathway of glycyrrhizin, the major bioactive compound in G. uralensis, is currently unclear. Identification of candidate genes involved in the glycyrrhizin biosynthetic pathway will significantly contribute to the understanding of the biosynthetic and medicinal chemistry of this compound.

resultsWe used the 454 GS FLX platform and Titanium regents to produce a substantial expressed sequence tag (EST) dataset from the vegetative organs of G. uralensis. A total of 59,219 ESTs with an average read length of 409 bp were generated. 454 ESTs were combined with the 50,666 G. uralensis ESTs in GenBank. The combined ESTs were assembled into 27,229 unique sequences (11,694 contigs and 15,535 singletons). A total of 20,437 unique gene elements representing approximately 10,000 independent transcripts were annotated using BLAST searches (e-value <or= 1e-5) against the SwissProt, KEGG, TAIR, Nr and Nt databases. The assembled sequences were annotated with gene names and Gene Ontology (GO) terms. With respect to the genes related to glycyrrhizin metabolism, genes encoding 16 enzymes of the 18 total steps of the glycyrrhizin skeleton synthesis pathway were found. To identify novel genes that encode cytochrome P450 enzymes and glycosyltransferases, which are related to glycyrrhizin metabolism, a total of 125 and 172 unigenes were found to be homologous to cytochrome P450s and glycosyltransferases, respectively. The cytochrome P450 candidate genes were classified into 32 CYP families, while the glycosyltransferase candidate genes were classified into 45 categories by GO analysis. Finally, 3 cytochrome P450 enzymes and 6 glycosyltransferases were selected as the candidates most likely to be involved in glycyrrhizin biosynthesis through an organ-specific expression pattern analysis based on real-time PCR.

conclusionsUsing the 454 GS FLX platform and Titanium reagents, our study provides a high-quality EST database for G. uralensis. Based on the EST analysis, novel candidate genes related to the secondary metabolite pathway of glycyrrhizin, including novel genes encoding cytochrome P450s and glycosyltransferases, were found. With the assistance of organ-specific expression pattern analysis, 3 unigenes encoding cytochrome P450s and 6 unigenes encoding glycosyltransferases were selected as the candidates most likely to be involved in glycyrrhizin biosynthesis.

Indexed as

Expressed Sequence TagsBase SequenceCytochrome P-450 Enzyme SystemDatabases, GeneticGenes, PlantGenomicsGlycosyltransferasesGlycyrrhiza uralensisGlycyrrhizic AcidPlants, MedicinalSequence Analysis, DNACytochrome P-450 Enzyme SystemGlycosyltransferasesGlycyrrhizic Acid

Identifiers

PMID20423525
PMCPMC2886062
OpenAlexW1995256372

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.