Evidence map›Paper›PMID 32125583›Full record

ArticleJournal of chemical ecology2020

Fungal Alkaloid Occurrence in Endophyte-Infected Perennial Ryegrass during Seedling Establishment.

Katrin G Hewitt, Wade J Mace, Catherine M McKenzie, Cory Matthew, Alison J Popay

Erratum issuedAbstract read
PubMed Publisher
In one paragraph

Article in Journal of chemical ecology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
5.6field-weighted citation impact, top 5% 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

9 citing papers in PubMed, 21 citations in OpenAlex.

  1. Chemotypic diversity of the fungusApplied and environmental microbiology · 2026
    Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Frontiers in microbiology · 2021
    Article
  9. Alkaloid Concentrations ofJournal of fungi (Basel, Switzerland) · 2020
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Katrin G HewittThe New Zealand Institute for Plant and Food Research Limited (Plant & Food Research), Physiological Chemistry, Ruakura, Private Bag 3230, Waikato Mail Centre, Hamilton, 3240, New Zealand. katrin_ruppert@web.de.ORCID http://orcid.org/0000-0003-1331-4597
Wade J MaceAgResearch Ltd, Forage Improvement, Grasslands Research Centre, Private Bag 11008, Palmerston North, 4442, New Zealand.
Catherine M McKenziePlant & Food Research, Data Science, 412 No 1 Road, RD 2, Te Puke, 3182, New Zealand.
Cory MatthewSchool of Agriculture and Environment, Massey University, Private Bag 11-222, Palmerston North, 4442, New Zealand.
Alison J PopayAgResearch Ltd, Biocontrol & Biosecurity, Ruakura Research Private Bag 3123, Hamilton, 3240, New Zealand.
AgResearch · NZPlant & Food Research · NZMassey University · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The symbiotic Epichloë festucae var. lolii endophyte produces alkaloids which can provide its host grass, perennial ryegrass (Lolium perenne L), with a selective advantage in both natural and agricultural managed ecosystems. This study focuses on understanding the alkaloid concentrations that occur in endophyte-infected perennial ryegrass during the early establishment phase. In a glasshouse experiment fungal alkaloid concentrations (peramine, lolitrem B, ergovaline, and epoxy-janthitrems) were measured in perennial ryegrass seedlings infected with E. festucae var. lolii proprietary strains AR1, AR37, NEA2, and NZ common toxic for 69 days after sowing. The endophyte becomes metabolically active, starting alkaloid production, as early as 6 days after sowing. Alkaloid concentrations peaked in 8- to 10- day-old seedlings due to a seedling growth slowdown. This study provides data showing that the loss of insect protection in endophyte-infected seedlings is linked to a reduction in chemical defence after seed-stored, maternally synthesised alkaloids are diluted by seedling dry matter accumulation.

Indexed as

AlkaloidsEndophytesEpichloeLoliumSeedlingsSymbiosisAlkaloidsArgentine stem weevilde novo synthesisEpichloë Festucae var. LoliiListronotus bonariensisPhytobiomesSeedling germination

Identifiers

PMID32125583
OpenAlexW3009556999

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.