Paper · 2026 · Natural Product Research

Flavonoids from Adesmia balsamica for growth control of Saprolegnia sp.: an in vitro and in silico analysis

Carmen Trujillo; Iván Montenegro; Evelyn Muñoz; et al.

8
claims
20
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

Phytochemical analysis of the resinous exudate from the Chilean plant Adesmia balsamica using chromatographic and spectroscopic methods led to the identification of five known metabolites: 1-(2’,4’-dihydroxy-5′-(3-methylbut-2-en-1-yl)phenyl)-3-phenylpropan-1-one (1), glabranin (2), isocordoin (3), 2’,4’-dihydroxychalcone (4), and 7-hydroxyflavanone (5). Their activity was evaluated in vitro against Saprolegnia parasitica and S. australis and complemented by in silico molecular docking against Htp-1 and ATPase. Results identified 2’,4’-dihydroxychalcone (4) as the most potent compound, with high efficacy (MIC ≤ 0.02 µM) and achieving 100% inhibition of both mycelial growth and cell membrane lysis, supported by highly favourable binding energies (−7.95 kcal/mol). The prenylated flavanone glabranin (2) also showed significant activity, with MIC values as low as 0.04 µM and causing up to 78% membrane damage. In conclusion, chalcone 4 and flavanone 2 are the primary drivers of the exudate’s bioactivity, positioning them as promising candidates for developing new biopesticides to control saprolegniosis.

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Claims 8

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

The chalcone 2’,4’-dihydroxychalcone (4) had the lowest MIC, at or below 0.02 µM, against Saprolegnia parasitica.

Taxon
Adesmia balsamicaAdesmia balsamicat0
Interactor
Saprolegnia parasiticaSaprolegnia parasiticae0pathogen
Compound
2’,4’-dihydroxychalcone (4)e1
Outcome
MICe1
Value
≤ 0.02 µMe1

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

Adesmia balsamica
Adesmia balsamica · TaxonFundación Jardín Botánico Nacional de Viña del · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Flavonoids from Adesmia balsamica”

✓ located verbatim in the source · title, characters 0–33 · show in text ↑
e0

“in vitro against Saprolegnia parasitica and S. australis”

✓ located verbatim in the source · abstract, characters 385–441 · show in text ↑
e1

“Results identified 2’,4’-dihydroxychalcone (4) as the most potent compound, with high efficacy (MIC ≤ 0.02 µM) and achieving 100% inhibition of both mycelial growth and cell membrane lysis, supported by highly favourable binding energies (−7.95 kcal/mol)”

✓ located verbatim in the source · abstract, characters 516–770 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

The chalcone 2’,4’-dihydroxychalcone (4) gave 100% inhibition of Saprolegnia mycelial growth and cell membrane lysis.

Taxon
Adesmia balsamicaAdesmia balsamicat0
Interactor
Saprolegnia parasiticaSaprolegnia parasiticae0pathogen
Compound
2’,4’-dihydroxychalcone (4)e1
Outcome
mycelial growth and cell membrane lysise1
Direction
inhibitione1
Value
100%e1

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

Adesmia balsamica
Adesmia balsamica · TaxonFundación Jardín Botánico Nacional de Viña del · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Flavonoids from Adesmia balsamica”

✓ located verbatim in the source · title, characters 0–33 · show in text ↑
e0

“in vitro against Saprolegnia parasitica and S. australis”

✓ located verbatim in the source · abstract, characters 385–441 · show in text ↑
e1

“Results identified 2’,4’-dihydroxychalcone (4) as the most potent compound, with high efficacy (MIC ≤ 0.02 µM) and achieving 100% inhibition of both mycelial growth and cell membrane lysis, supported by highly favourable binding energies (−7.95 kcal/mol)”

✓ located verbatim in the source · abstract, characters 516–770 · show in text ↑
Observationobservedoriginal resultpositivesimulated

Claim · model-written summary

Docking of 2’,4’-dihydroxychalcone (4) gave a binding energy of −7.95 kcal/mol.

Taxon
Adesmia balsamicaAdesmia balsamicat0
Compound
2’,4’-dihydroxychalcone (4)e1
Outcome
binding energiese1
Value
−7.95 kcal/mole1

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

Adesmia balsamica
Adesmia balsamica · TaxonFundación Jardín Botánico Nacional de Viña del · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Flavonoids from Adesmia balsamica”

✓ located verbatim in the source · title, characters 0–33 · show in text ↑
e1

“Results identified 2’,4’-dihydroxychalcone (4) as the most potent compound, with high efficacy (MIC ≤ 0.02 µM) and achieving 100% inhibition of both mycelial growth and cell membrane lysis, supported by highly favourable binding energies (−7.95 kcal/mol)”

✓ located verbatim in the source · abstract, characters 516–770 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The prenylated flavanone glabranin (2) had significant activity against Saprolegnia, with MIC values as low as 0.04 µM.

Taxon
Adesmia balsamicaAdesmia balsamicat0
Interactor
Saprolegnia parasiticaSaprolegnia parasiticae0pathogen
Compound
glabranin (2)e2
Outcome
MIC valuese2
Value
0.04 µMe2

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

Adesmia balsamica
Adesmia balsamica · TaxonFundación Jardín Botánico Nacional de Viña del · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Flavonoids from Adesmia balsamica”

✓ located verbatim in the source · title, characters 0–33 · show in text ↑
e0

“in vitro against Saprolegnia parasitica and S. australis”

✓ located verbatim in the source · abstract, characters 385–441 · show in text ↑
e2

“The prenylated flavanone glabranin (2) also showed significant activity, with MIC values as low as 0.04 µM and causing up to 78% membrane damage”

✓ located verbatim in the source · abstract, characters 772–916 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Glabranin (2) caused up to 78 percent membrane damage in Saprolegnia.

Taxon
Adesmia balsamicaAdesmia balsamicat0
Interactor
Saprolegnia parasiticaSaprolegnia parasiticae0pathogen
Compound
glabranin (2)e2
Outcome
membrane damagee2
Value
up to 78%e2

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

Adesmia balsamica
Adesmia balsamica · TaxonFundación Jardín Botánico Nacional de Viña del · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Flavonoids from Adesmia balsamica”

✓ located verbatim in the source · title, characters 0–33 · show in text ↑
e0

“in vitro against Saprolegnia parasitica and S. australis”

✓ located verbatim in the source · abstract, characters 385–441 · show in text ↑
e2

“The prenylated flavanone glabranin (2) also showed significant activity, with MIC values as low as 0.04 µM and causing up to 78% membrane damage”

✓ located verbatim in the source · abstract, characters 772–916 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Phytochemical analysis of the Adesmia balsamica exudate identified five known metabolites.

Taxon
Adesmia balsamicaAdesmia balsamicat0
Outcome
identification of five known metabolitese3

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

Adesmia balsamica
Adesmia balsamica · TaxonFundación Jardín Botánico Nacional de Viña del · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Flavonoids from Adesmia balsamica”

✓ located verbatim in the source · title, characters 0–33 · show in text ↑
e3

“Phytochemical analysis of the resinous exudate from the Chilean plant Adesmia balsamica using chromatographic and spectroscopic methods led to the identification of five known metabolites”

✓ located verbatim in the source · abstract, characters 0–187 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Chalcone 4 and flavanone 2 are the primary drivers of the Adesmia balsamica exudate bioactivity.

Taxon
Adesmia balsamicaAdesmia balsamicat0
Compound
chalcone 4 and flavanone 2e4
Outcome
bioactivitye4

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

Adesmia balsamica
Adesmia balsamica · TaxonFundación Jardín Botánico Nacional de Viña del · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Flavonoids from Adesmia balsamica”

✓ located verbatim in the source · title, characters 0–33 · show in text ↑
e4

“In conclusion, chalcone 4 and flavanone 2 are the primary drivers of the exudate’s bioactivity, positioning them as promising candidates for developing new biopesticides to control saprolegniosis”

✓ located verbatim in the source · abstract, characters 918–1113 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors position the flavonoids as promising candidates for developing new biopesticides against saprolegniosis.

Taxon
Adesmia balsamicaAdesmia balsamicat0
Outcome
developing new biopesticides to control saprolegniosise4

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

Adesmia balsamica
Adesmia balsamica · TaxonFundación Jardín Botánico Nacional de Viña del · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Flavonoids from Adesmia balsamica”

✓ located verbatim in the source · title, characters 0–33 · show in text ↑
e4

“In conclusion, chalcone 4 and flavanone 2 are the primary drivers of the exudate’s bioactivity, positioning them as promising candidates for developing new biopesticides to control saprolegniosis”

✓ located verbatim in the source · abstract, characters 918–1113 · show in text ↑