Evidence map›Paper›PMID 27999964›Full record

ArticleMycorrhiza2017

Arbuscular mycorrhizal fungi altered the hypericin, pseudohypericin, and hyperforin content in flowers of Hypericum perforatum grown under contrasting P availability in a highly organic substrate.

Silvia Lazzara, Marcello Militello, Alessandra Carrubba, Edoardo Napoli, Sergio Saia

Abstract read
PubMed Publisher
In one paragraph

Article in Mycorrhiza, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
11.0field-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

14 citing papers in PubMed, 44 citations in OpenAlex.

  1. Article
  2. Diverse Therapeutic Potentials of Hypericin: An In-Depth Review.Current topics in medicinal chemistry · 2025
    Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Does phenotyping ofFrontiers in plant science · 2022
    Review
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. 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

5 authors at 4 institutions in 1 country.

Silvia LazzaraAgricultural Research Council, Research Unit for the Recovery and the Exploitation of Mediterranean Flower Species (CREA-SFM), s.s. 113-Km 245,500, 90011, Bagheria, PA, Italy.
Marcello MilitelloAgricultural Research Council, Research Unit for the Recovery and the Exploitation of Mediterranean Flower Species (CREA-SFM), s.s. 113-Km 245,500, 90011, Bagheria, PA, Italy.
Alessandra CarrubbaDepartment of Agricultural and Forest Sciences, University of Palermo, viale delle scienze, Ed. 4, 90128, Palermo, Italy.
Edoardo NapoliNational Research Council, Institute of Biomolecular Chemistry, Via Paolo Gaifami 18, 95126, Catania, Italy.
Sergio SaiaAgricultural Research Council, Research Unit for the Recovery and the Exploitation of Mediterranean Flower Species (CREA-SFM), s.s. 113-Km 245,500, 90011, Bagheria, PA, Italy. sergio.saia@crea.gov.it.ORCID http://orcid.org/0000-0001-5465-8500
Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria · ITCereal Research Centre · ITNational Research Council · ITUniversity of Palermo · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

St. John's Wort (Hypericum perforatum) is a perennial herb able to produce water-soluble active ingredients (a.i.), mostly in flowers, with a wide range of medicinal and biotechnological uses. However, information about the ability of arbuscular mycorrhizal fungi (AMF) to affect its biomass accumulation, flower production, and concentration of a.i. under contrasting nutrient availability is still scarce. In the present experiment, we evaluated the role of AMF on growth, flower production, and concentration of bioactive secondary metabolites (hypericin, pseudohypericin, and hyperforin) of H. perforatum under contrasting P availability. AMF stimulated the production of aboveground biomass under low P conditions and increased the production of root biomass. AMF almost halved the number of flowers per plant by means of a reduction of the number of flower-bearing stems per plant under high P availability and through a lower number of flowers per stem in the low-P treatment. Flower hyperforin concentration was 17.5% lower in mycorrhizal than in non-mycorrhizal plants. On the contrary, pseudohypericin and hypericin concentrations increased by 166.8 and 279.2%, respectively, with AMF under low P availability, whereas no effect of AMF was found under high P availability. These results have implications for modulating the secondary metabolite production of H. perforatum. However, further studies are needed to evaluate the competition for photosynthates between AMF and flowers at different nutrient availabilities for both plant and AM fungus.

Indexed as

AnthracenesFlowersHypericumMycorrhizaePerylenePhloroglucinolPhosphorusPlant ExtractsTerpenesAnthraceneshyperforinhypericinPerylenePhloroglucinolPhosphorusPlant ExtractspseudohypericinTerpenesGuttiferae sensu latoHypericaceaeNaphthodianthronesPhenolsPhloroglucinolsSt. John’s Wort

Identifiers

PMID27999964
OpenAlexW2565739251

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.