Paper · 2015 · Plant Disease

Antibacterial Activity of Wild Mushroom Extracts on Bacterial Wilt Pathogen Ralstonia solanacearum

Jana Erjavec; Maja Ravnikar; Jože Brzin; et al.

6
claims
12
verbatim quotes
17
citations
1
research areas
✓
Open access

Abstract

In total, 150 protein extracts from 94 different basidiomycete and ascomycete wild mushroom species were tested for antibacterial activity against the quarantine plant-pathogen bacterium Ralstonia solanacearum. In in vitro microtiter plate assays, 15 extracts with moderate to high antibacterial activities were identified: 11 completely inhibited bacterial growth and 4 showed partial inhibition. Of these 15 extracts, 5 were further tested and 3 extracts slowed disease progression and reduced disease severity in artificially inoculated tomato and potato plants. However, the in vitro activities of the extracts did not always correlate with their in vivo activities, which emphasizes the importance of performing early screening tests also in vivo. Testing of selected extracts against 12 R. solanacearum strains identified 6 with potential for broader applicability. Further analysis of extracts from Amanita phalloides and Clitocybe geotropa showed that the active substances are proteins with an approximate size of 180 kDa. To our knowledge, this is the first in vitro and in vivo study that demonstrates that mushroom protein extracts can be promising for treatment of bacterial wilt caused by R. solanacearum.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 6

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Fifteen mushroom extracts inhibited Ralstonia growth in vitro: 11 completely and four partially.

Interactor
Ralstonia solanacearumRalstonia solanacearume1pathogene2
Outcome
antibacterial activitiese0
Value
15 extractse0

Not reportedTaxon

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ralstonia solanacearum
Ralstonia solanacearum · InteractorClemson University - USDA Cooperative Extension Slide Series, Bugwood.org · Public domain · Wikimedia Commons ↗

Verbatim

e0

“15 extracts with moderate to high antibacterial activities were identified: 11 completely inhibited bacterial growth and 4 showed partial inhibition”

✓ located verbatim in the source · abstract, characters 248–396 · show in text ↑
e1

“Ralstonia solanacearum”

✓ located verbatim in the source · title, characters 76–98 · show in text ↑
e2

“pathogen”

✓ located after whitespace/quote normalisation · title, characters 67–75 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Three mushroom extracts slowed bacterial wilt progression in inoculated tomato plants.

Treatment
3 extractse0
Interactor
Ralstonia solanacearumRalstonia solanacearume1pathogene2
Outcome
disease progressione0
Direction
slowede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Ralstonia solanacearum
Ralstonia solanacearum · InteractorClemson University - USDA Cooperative Extension Slide Series, Bugwood.org · Public domain · Wikimedia Commons ↗

Verbatim

e0

“3 extracts slowed disease progression and reduced disease severity in artificially inoculated tomato and potato plants”

✓ located verbatim in the source · abstract, characters 446–564 · show in text ↑
e1

“Ralstonia solanacearum”

✓ located verbatim in the source · title, characters 76–98 · show in text ↑
e2

“pathogen”

✓ located after whitespace/quote normalisation · title, characters 67–75 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Three mushroom extracts reduced bacterial wilt severity in inoculated potato plants.

Treatment
3 extractse0
Interactor
Ralstonia solanacearumRalstonia solanacearume1pathogene2
Outcome
disease severitye0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗
Ralstonia solanacearum
Ralstonia solanacearum · InteractorClemson University - USDA Cooperative Extension Slide Series, Bugwood.org · Public domain · Wikimedia Commons ↗

Verbatim

e0

“3 extracts slowed disease progression and reduced disease severity in artificially inoculated tomato and potato plants”

✓ located verbatim in the source · abstract, characters 446–564 · show in text ↑
e1

“Ralstonia solanacearum”

✓ located verbatim in the source · title, characters 76–98 · show in text ↑
e2

“pathogen”

✓ located after whitespace/quote normalisation · title, characters 67–75 · show in text ↑
Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

In vitro extract activity did not always correlate with activity in plants.

Outcome
in vivo activitiese0
Direction
did not always correlatee0
Comparator
in vitro activitiese0

Not reportedTaxon

Verbatim

e0

“the in vitro activities of the extracts did not always correlate with their in vivo activities”

✓ located verbatim in the source · abstract, characters 575–669 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Six extracts showed potential activity across 12 Ralstonia strains.

Interactor
R. solanacearumRalstonia solanacearume0pathogen
Outcome
potential for broader applicabilitye0
Value
6e0

Not reportedTaxon

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ralstonia solanacearum
Ralstonia solanacearum · InteractorClemson University - USDA Cooperative Extension Slide Series, Bugwood.org · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Testing of selected extracts against 12 R. solanacearum strains identified 6 with potential for broader applicability”

✓ located verbatim in the source · abstract, characters 753–870 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The active substances in Amanita phalloides extracts were approximately 180 kDa proteins.

Outcome
active substances are proteinse0
Value
180 kDae0

Not reportedTaxon

Verbatim

e0

“extracts from Amanita phalloides and Clitocybe geotropa showed that the active substances are proteins with an approximate size of 180 kDa”

✓ located verbatim in the source · abstract, characters 892–1030 · show in text ↑

botanical · Ralstonia solanacearum · Solanum lycopersicum (tomato)Positive and negative results

31 papers: 28 positive, 3 negative or no effect

27 papers in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. no effect
  3. negative

27 papers more in this group

See all 31 papers →

botanical · Ralstonia solanacearum · Solanum tuberosum (potato)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.