Paper · 2021 · Journal of Fungi

Assessment of Commercial Fungicides against Onion (Allium cepa) Basal Rot Disease Caused by Fusarium oxysporum f. sp. cepae and Fusarium acutatum

Ofir Degani; Ben Kalman

10
claims
26
verbatim quotes
30
citations
4
research areas
✓
Open access · cc-by

Abstract

The onion basal rot disease is a worldwide threat caused by species of the genus Fusarium. Today, Israel’s control of this disease is limited to a four-year growth cycle and Metam sodium soil disinfection. Here, commercial chemical fungicides were evaluated as control treatments against two of the primary pathogens involved, F. oxysporum f. sp. cepae and F. Acutatum. Out of 10 fungicides tested on culture plates, 3, Prochloraz, Azoxystrobin + Tebuconazole, and Fludioxonil + Sedaxen, had strong inhibitory effects on mycelial growth and were selected and tested in seeds in vitro. The preparations were applied as a seed coating and tested in two commercial cultivars, Riverside (Orlando, white cv.) and Noam (red cv.). Prochloraz (0.3% w/w concentration), the most promising compound, was efficient in reducing the Noam cv. sprouts’ disease symptoms. This preparation had no harmful in situ-toxicity effect and did not influence the plants’ seed germination and early development. In Noam cv. potted 30-day-old sprouts, the Prochloraz treatment was able to reduce the harmful impact of F. oxysporum f. sp. cepae. on the seedlings’ wet biomass, but was not effective in the Riverside cv. or against the F. acutatum pathogen. This suggests that future protective strategies must include an effective protective suit tailored to each of the pathogen species involved and the onion cultivar. The methods presented in this work can be applied for rapidly scanning multiple compounds while gradually ruling out ineffective ones. Eventually, this screening will enable field testing of the highest potential fungicides that successfully pass the pot experiments.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Prochloraz inhibited Fusarium mycelial growth on culture plates.

Taxon
OnionAllium cepat0
Treatment
Prochloraze0
Interactor
FusariumFusariume1pathogen
Outcome
mycelial growthe0
Direction
inhibitorye0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Fusarium
Fusarium · Interactor · picture of the genus (one of its species)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Out of 10 fungicides tested on culture plates, 3, Prochloraz, Azoxystrobin + Tebuconazole, and Fludioxonil + Sedaxen, had strong inhibitory effects on mycelial growth”

✓ located verbatim in the source · abstract, characters 370–536 · show in text ↑
t0

“Onion (Allium cepa)”

✓ located verbatim in the source · title, characters 44–63 · show in text ↑
e1

“The onion basal rot disease is a worldwide threat caused by species of the genus Fusarium. Today, Israel’s control of this disease is limited to a four-year growth cycle and Metam sodium soil disinfection. Here, commercial chemical fungicides were evaluated as control treatments against two of the primary pathogens involved, F. oxysporum f. sp. cepae and F. Acutatum. Out of 10 fungicides tested on culture plates, 3, Prochloraz, Azoxystrobin + Tebuconazole, and Fludioxonil + Sedaxen, had strong inhibitory effects on mycelial growth”

✓ located verbatim in the source · abstract, characters 0–536 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Azoxystrobin + Tebuconazole strongly inhibited mycelial growth on culture plates.

Taxon
OnionAllium cepat0
Treatment
Azoxystrobin + Tebuconazolee0
Interactor
FusariumFusariume1pathogen
Outcome
mycelial growthe0
Direction
inhibitorye0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Fusarium
Fusarium · Interactor · picture of the genus (one of its species)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Out of 10 fungicides tested on culture plates, 3, Prochloraz, Azoxystrobin + Tebuconazole, and Fludioxonil + Sedaxen, had strong inhibitory effects on mycelial growth”

✓ located verbatim in the source · abstract, characters 370–536 · show in text ↑
t0

“Onion (Allium cepa)”

✓ located verbatim in the source · title, characters 44–63 · show in text ↑
e1

“The onion basal rot disease is a worldwide threat caused by species of the genus Fusarium. Today, Israel’s control of this disease is limited to a four-year growth cycle and Metam sodium soil disinfection. Here, commercial chemical fungicides were evaluated as control treatments against two of the primary pathogens involved, F. oxysporum f. sp. cepae and F. Acutatum. Out of 10 fungicides tested on culture plates, 3, Prochloraz, Azoxystrobin + Tebuconazole, and Fludioxonil + Sedaxen, had strong inhibitory effects on mycelial growth”

✓ located verbatim in the source · abstract, characters 0–536 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Fludioxonil + Sedaxen strongly inhibited mycelial growth on culture plates.

Taxon
OnionAllium cepat0
Treatment
Fludioxonil + Sedaxene0
Interactor
FusariumFusariume1pathogen
Outcome
mycelial growthe0
Direction
inhibitorye0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Fusarium
Fusarium · Interactor · picture of the genus (one of its species)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Out of 10 fungicides tested on culture plates, 3, Prochloraz, Azoxystrobin + Tebuconazole, and Fludioxonil + Sedaxen, had strong inhibitory effects on mycelial growth”

✓ located verbatim in the source · abstract, characters 370–536 · show in text ↑
t0

“Onion (Allium cepa)”

✓ located verbatim in the source · title, characters 44–63 · show in text ↑
e1

“The onion basal rot disease is a worldwide threat caused by species of the genus Fusarium. Today, Israel’s control of this disease is limited to a four-year growth cycle and Metam sodium soil disinfection. Here, commercial chemical fungicides were evaluated as control treatments against two of the primary pathogens involved, F. oxysporum f. sp. cepae and F. Acutatum. Out of 10 fungicides tested on culture plates, 3, Prochloraz, Azoxystrobin + Tebuconazole, and Fludioxonil + Sedaxen, had strong inhibitory effects on mycelial growth”

✓ located verbatim in the source · abstract, characters 0–536 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Prochloraz reduced disease symptoms in Noam onion sprouts.

Taxon
OnionAllium cepat0
Material
Noame0
Organ / stage
sproutse0
Treatment
Prochloraz (0.3% w/w concentration)e0
Outcome
disease symptomse0
Direction
reducinge0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Prochloraz (0.3% w/w concentration), the most promising compound, was efficient in reducing the Noam cv. sprouts’ disease symptoms.”

✓ located verbatim in the source · abstract, characters 724–855 · show in text ↑
t0

“Onion (Allium cepa)”

✓ located verbatim in the source · title, characters 44–63 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Prochloraz had no harmful toxicity effect on onion plants.

Taxon
OnionAllium cepat0
Treatment
This preparatione0
Outcome
in situ-toxicity effecte0
Direction
no harmfule0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“This preparation had no harmful in situ-toxicity effect and did not influence the plants’ seed germination and early development.”

✓ located verbatim in the source · abstract, characters 856–985 · show in text ↑
t0

“Onion (Allium cepa)”

✓ located verbatim in the source · title, characters 44–63 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Prochloraz did not influence seed germination and early development.

Taxon
OnionAllium cepat0
Treatment
This preparatione0
Outcome
seed germination and early developmente0
Direction
did not influencee0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“This preparation had no harmful in situ-toxicity effect and did not influence the plants’ seed germination and early development.”

✓ located verbatim in the source · abstract, characters 856–985 · show in text ↑
t0

“Onion (Allium cepa)”

✓ located verbatim in the source · title, characters 44–63 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Prochloraz reduced the harmful effect of F. oxysporum f. sp. cepae on wet biomass of Noam seedlings.

Taxon
OnionAllium cepat0
Material
Noame0
Organ / stage
30-day-old sproutse0
Treatment
Prochloraz treatmente0
Interactor
F. oxysporum f. sp. cepae.Fusarium oxysporum f. sp. cepaee0pathogene1
Outcome
seedlings’ wet biomasse0
Direction
reducee0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Fusarium oxysporum f. sp. cepae
Fusarium oxysporum f. sp. cepae · Interactor · picture of its genus (no picture of exactly this name)Public domain · Wikimedia Commons ↗

Verbatim

e0

“In Noam cv. potted 30-day-old sprouts, the Prochloraz treatment was able to reduce the harmful impact of F. oxysporum f. sp. cepae. on the seedlings’ wet biomass”

✓ located verbatim in the source · abstract, characters 986–1147 · show in text ↑
t0

“Onion (Allium cepa)”

✓ located verbatim in the source · title, characters 44–63 · show in text ↑
e1

“The onion basal rot disease is a worldwide threat caused by species of the genus Fusarium. Today, Israel’s control of this disease is limited to a four-year growth cycle and Metam sodium soil disinfection. Here, commercial chemical fungicides were evaluated as control treatments against two of the primary pathogens involved, F. oxysporum f. sp. cepae and F. Acutatum. Out of 10 fungicides tested on culture plates, 3, Prochloraz, Azoxystrobin + Tebuconazole, and Fludioxonil + Sedaxen, had strong inhibitory effects on mycelial growth”

✓ located verbatim in the source · abstract, characters 0–536 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Prochloraz was ineffective in Riverside sprouts.

Taxon
OnionAllium cepat0
Material
Riversidee0
Treatment
Prochloraze1
Outcome
not effectivee0
Direction
not effectivee0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“but was not effective in the Riverside cv. or against the F. acutatum pathogen.”

✓ located verbatim in the source · abstract, characters 1149–1228 · show in text ↑
t0

“Onion (Allium cepa)”

✓ located verbatim in the source · title, characters 44–63 · show in text ↑
e1

“The onion basal rot disease is a worldwide threat caused by species of the genus Fusarium. Today, Israel’s control of this disease is limited to a four-year growth cycle and Metam sodium soil disinfection. Here, commercial chemical fungicides were evaluated as control treatments against two of the primary pathogens involved, F. oxysporum f. sp. cepae and F. Acutatum. Out of 10 fungicides tested on culture plates, 3, Prochloraz, Azoxystrobin + Tebuconazole, and Fludioxonil + Sedaxen, had strong inhibitory effects on mycelial growth”

✓ located verbatim in the source · abstract, characters 0–536 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Prochloraz was ineffective against F. acutatum.

Taxon
OnionAllium cepat0
Treatment
Prochloraze1
Interactor
F. acutatumFusarium acutatume0pathogen
Outcome
F. acutatume0
Direction
not effectivee0

Not reportedComparator

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“but was not effective in the Riverside cv. or against the F. acutatum pathogen.”

✓ located verbatim in the source · abstract, characters 1149–1228 · show in text ↑
t0

“Onion (Allium cepa)”

✓ located verbatim in the source · title, characters 44–63 · show in text ↑
e1

“The onion basal rot disease is a worldwide threat caused by species of the genus Fusarium. Today, Israel’s control of this disease is limited to a four-year growth cycle and Metam sodium soil disinfection. Here, commercial chemical fungicides were evaluated as control treatments against two of the primary pathogens involved, F. oxysporum f. sp. cepae and F. Acutatum. Out of 10 fungicides tested on culture plates, 3, Prochloraz, Azoxystrobin + Tebuconazole, and Fludioxonil + Sedaxen, had strong inhibitory effects on mycelial growth”

✓ located verbatim in the source · abstract, characters 0–536 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Future protection should be tailored to each pathogen species and onion cultivar.

Taxon
OnionAllium cepat0
Outcome
effective protective suit tailored to each of the pathogen species involved and the onion cultivare0

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“future protective strategies must include an effective protective suit tailored to each of the pathogen species involved and the onion cultivar”

✓ located verbatim in the source · abstract, characters 1248–1391 · show in text ↑
t0

“Onion (Allium cepa)”

✓ located verbatim in the source · title, characters 44–63 · show in text ↑

prochloraz · Fusarium · Allium cepa (onion)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

fludioxonil · Fusarium · Allium cepa (onion)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

prochloraz · Fusarium oxysporum f. sp. cepae · Allium cepa (onion)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

prochloraz · Fusarium acutatum · Allium cepa (onion)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. negative
See all 2 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.