Evidence map›Paper›PMID 33182252›Full record

ReviewAntioxidants (Basel, Switzerland)2020

Are Flavonoids Effective Antioxidants in Plants? Twenty Years of Our Investigation.

Giovanni Agati, Cecilia Brunetti, Alessio Fini, Antonella Gori, Lucia Guidi, Marco Landi, Federico Sebastiani, Massimiliano Tattini

Open access · goldAbstract readReview
In one paragraph

Review in Antioxidants (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 110 papers.

0numbers the graph read from it
0cells of the map it votes in
110citing papers in PubMed
33.4field-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

110 citing papers in PubMed, 269 citations in OpenAlex.

  1. Article
  2. Infection with Tomato Mosaic Virus inInternational journal of molecular sciences · 2026
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  12. Formation of Adaptive Defense to Low Temperatures in Arabidopsis thaliana.Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections · 2026
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50 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

8 authors at 5 institutions in 1 country.

Giovanni AgatiInstitute of Applied Physics 'Carrara', National Research Council of Italy (CNR), Via Madonna del Piano 10, Sesto F.no, I-50019 Florence, Italy.ORCID 0000-0003-0855-9389
Cecilia BrunettiInstitute for Sustainable Plant Protection, National Research Council of Italy (CNR), Via Madonna del Piano 10, I-50019, Sesto F.no, Florence, Italy.ORCID 0000-0002-8531-6076
Alessio FiniDepartment of Agriculural and Environmental Sciences - Production, Landscape, Agroenergy, University of Milan, Via Celoria 2, I-20133 Milan, Italy.
Antonella GoriDepartment of Agriculture, Food, Environment and Forestry, University of Florence, Viale delle Idee 30, Sesto F.no, I-50019 Florence, Italy.ORCID 0000-0002-7304-7526
Lucia GuidiDepartment of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, I-56124 Pisa, Italy.ORCID 0000-0002-2472-720X
Marco LandiDepartment of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, I-56124 Pisa, Italy.ORCID 0000-0003-0121-0715
Federico SebastianiInstitute for Sustainable Plant Protection, National Research Council of Italy (CNR), Via Madonna del Piano 10, I-50019, Sesto F.no, Florence, Italy.
Massimiliano TattiniInstitute for Sustainable Plant Protection, National Research Council of Italy (CNR), Via Madonna del Piano 10, I-50019, Sesto F.no, Florence, Italy.ORCID 0000-0001-5434-8860
Institute for Sustainable Plant Protection · ITUniversity of Pisa · ITNational Research Council · ITUniversity of Florence · ITUniversity of Milan · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Whether flavonoids play significant antioxidant roles in plants challenged by photooxidative stress of different origin has been largely debated over the last few decades. A critical review of the pertinent literature and our experimentation as well, based on a free-of-scale approach, support an important antioxidant function served by flavonoids in plants exposed to a wide range of environmental stressors, the significance of which increases with the severity of stress. On the other side, some questions need conclusive answers when the putative antioxidant functions of plant flavonoids are examined at the level of both the whole-cell and cellular organelles. This partly depends upon a conclusive, robust, and unbiased definition of "a plant antioxidant", which is still missing, and the need of considering the subcellular re-organization that occurs in plant cells in response to severe stress conditions. This likely makes our deterministic-based approach unsuitable to unveil the relevance of flavonoids as antioxidants in extremely complex biological systems, such as a plant cell exposed to an ever-changing stressful environment. This still poses open questions about how to measure the occurred antioxidant action of flavonoids. Our reasoning also evidences the need of contemporarily evaluating the changes in key primary and secondary components of the antioxidant defense network imposed by stress events of increasing severity to properly estimate the relevance of the antioxidant functions of flavonoids in an in planta situation. In turn, this calls for an in-depth analysis of the sub-cellular distribution of primary and secondary antioxidants to solve this still intricate matter.

Indexed as

antioxidant enzymescytoplasm-located flavonoidsearly land plantsflavonolshydrogen peroxidephotoprotectionreactive oxygen speciesUV-B radiationvacuolar flavonoids

Identifiers

PMID33182252
PMCPMC7695271
OpenAlexW3105154790

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.