Paper · 2009 · Natural Product Research

Anti-oomycete compounds fromGanoderma appalantum, a wood rot basidiomycete

J. Sudisha; H. Shekar Shetty

9
claims
22
verbatim quotes
9
citations
2
research areas
—
Not open access

Abstract

Solvent extracts of 17 different basidiomycetes were tested for their ability to inhibit Sclerospora graminicola. Among those tested, only three basidiomycete crude extracts exhibited significant inhibition on pathogen sporulation, zoospore release and zoospore motility. In vitro, the chloroform extract of Ganoderma appalantum (3 mg mL(-1)) recorded a maximum sporangial inhibition of 52.5 and 82.0% zoospore release and 92.5% motility. Crude extracts of three different basidiomycete fungi were treated to pearl millet seeds and assessed for seed germination, seedling vigour and effectiveness against downy mildew disease under greenhouse conditions. None of the solvent extracts were found to be phytotoxic. Chloroform and petroleum ether extracts of G. appalantum (3 mg mL(-1)) proved to be the best by offering disease protection of 55.6 and 43.7%, respectively, followed by chloroform and petroleum ether extracts of Polyphorus spp., with 42.5 and 39.1% disease protection. The thin layer chromatography (TLC) spots that developed were eluted and tested for inhibition of S. graminicola zoosporangia. The partially purified compound from TLC chloroform extract of G. appalantum consistently showed good inhibitory effect against S. graminicola, which exhibited inhibition of sporangia (42.3%), zoospore release (76.7%) and zoospore motility (86.7%), compared to the chloroform control which offered only 1.9, 2.9 and 1.7% inhibition of sporangia, zoospore release and zoospore motility, respectively. The partially purified compound from petroleum ether extract of G. appalantum resulted in 38.0, 63.0 and 81.6% inhibition of sporangia, zoospore release and motility, respectively, compared to petroleum ether control. However, azoxystrobin 250 SC (2 microg mL(-1)) and apron 35 SD (0.015 mg mL(-1)) treated on sporangial suspension showed the highest inhibition of S. graminicola pathogen compared to chloroform and petroleum ether TLC fractions.

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Claims 9

Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Three basidiomycete extracts significantly inhibited pathogen sporulation, zoospore release and motility.

Taxon
pearl milletCenchrus americanuse0e1e2
Interactor
Sclerospora graminicolaSclerospora graminicolae0e1e2pathogen
Outcome
pathogen sporulation, zoospore release and zoospore motilitye0e1e2
Direction
inhibitione0e1e2

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

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗
Sclerospora graminicola
Sclerospora graminicola · InteractorBjörn Sothmann · CC BY-SA 4.0 · iNaturalist ↗

Verbatim

e0

“only three basidiomycete crude extracts exhibited significant inhibition on pathogen sporulation, zoospore release and zoospore motility.”

✓ located verbatim in the source · abstract, characters 134–271 · show in text ↑
e1

“Solvent extracts of 17 different basidiomycetes were tested for their ability to inhibit Sclerospora graminicola.”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
e2

“Crude extracts of three different basidiomycete fungi were treated to pearl millet seeds”

✓ located verbatim in the source · abstract, characters 439–527 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ganoderma chloroform extract inhibited sporangia by 52.5 in vitro.

Taxon
pearl milletCenchrus americanuse0e1e2
Treatment
chloroform extract of Ganoderma appalantum (3 mg mL(-1))e0e1e2
Interactor
Sclerospora graminicolaSclerospora graminicolae0e1e2pathogen
Outcome
sporangial inhibitione0e1e2
Direction
maximume0e1e2
Value
52.5e0e1e2

Not reportedComparator

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

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗
Sclerospora graminicola
Sclerospora graminicola · InteractorBjörn Sothmann · CC BY-SA 4.0 · iNaturalist ↗

Verbatim

e0

“In vitro, the chloroform extract of Ganoderma appalantum (3 mg mL(-1)) recorded a maximum sporangial inhibition of 52.5”

✓ located verbatim in the source · abstract, characters 272–391 · show in text ↑
e1

“Crude extracts of three different basidiomycete fungi were treated to pearl millet seeds”

✓ located verbatim in the source · abstract, characters 439–527 · show in text ↑
e2

“Solvent extracts of 17 different basidiomycetes were tested for their ability to inhibit Sclerospora graminicola.”

✓ located verbatim in the source · abstract, characters 0–113 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ganoderma chloroform extract inhibited zoospore release by 82.0%.

Taxon
pearl milletCenchrus americanuse0e1e2
Treatment
chloroform extract of Ganoderma appalantum (3 mg mL(-1))e0e1e2
Outcome
zoospore releasee0e1e2
Direction
inhibitione0e1e2
Value
82.0%e0e1e2

Not reportedComparator

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

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“82.0% zoospore release”

✓ located verbatim in the source · abstract, characters 396–418 · show in text ↑
e1

“In vitro, the chloroform extract of Ganoderma appalantum (3 mg mL(-1)) recorded a maximum sporangial inhibition of 52.5 and 82.0% zoospore release and 92.5% motility.”

✓ located verbatim in the source · abstract, characters 272–438 · show in text ↑
e2

“Crude extracts of three different basidiomycete fungi were treated to pearl millet seeds”

✓ located verbatim in the source · abstract, characters 439–527 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ganoderma chloroform extract inhibited zoospore motility by 92.5%.

Taxon
pearl milletCenchrus americanuse0e1e2
Treatment
chloroform extract of Ganoderma appalantum (3 mg mL(-1))e0e1e2
Outcome
motilitye0e1e2
Direction
inhibitione0e1e2
Value
92.5%e0e1e2

Not reportedComparator

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

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“92.5% motility”

✓ located verbatim in the source · abstract, characters 423–437 · show in text ↑
e1

“In vitro, the chloroform extract of Ganoderma appalantum (3 mg mL(-1)) recorded a maximum sporangial inhibition of 52.5 and 82.0% zoospore release and 92.5% motility.”

✓ located verbatim in the source · abstract, characters 272–438 · show in text ↑
e2

“Crude extracts of three different basidiomycete fungi were treated to pearl millet seeds”

✓ located verbatim in the source · abstract, characters 439–527 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

None of the solvent extracts were phytotoxic to pearl millet.

Taxon
pearl milletCenchrus americanuse0e1
Treatment
solvent extractse0e1
Outcome
phytotoxice0e1

Not reportedDirection

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

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“None of the solvent extracts were found to be phytotoxic.”

✓ located verbatim in the source · abstract, characters 655–712 · show in text ↑
e1

“Crude extracts of three different basidiomycete fungi were treated to pearl millet seeds”

✓ located verbatim in the source · abstract, characters 439–527 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ganoderma chloroform extract offered 55.6% downy mildew protection.

Taxon
pearl milletCenchrus americanuse0e1
Treatment
Chloroforme0e1
Outcome
disease protectione0e1
Direction
beste0e1
Value
55.6e0e1

Not reportedComparator

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

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Chloroform and petroleum ether extracts of G. appalantum (3 mg mL(-1)) proved to be the best by offering disease protection of 55.6 and 43.7%, respectively”

✓ located verbatim in the source · abstract, characters 713–868 · show in text ↑
e1

“Crude extracts of three different basidiomycete fungi were treated to pearl millet seeds”

✓ located verbatim in the source · abstract, characters 439–527 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ganoderma petroleum ether extract offered 43.7% protection.

Taxon
pearl milletCenchrus americanuse0e1
Treatment
petroleum ether extracts of G. appalantum (3 mg mL(-1))e0e1
Outcome
disease protectione0e1
Direction
beste0e1
Value
43.7%e0e1

Not reportedComparator

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

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Chloroform and petroleum ether extracts of G. appalantum (3 mg mL(-1)) proved to be the best by offering disease protection of 55.6 and 43.7%, respectively”

✓ located verbatim in the source · abstract, characters 713–868 · show in text ↑
e1

“Crude extracts of three different basidiomycete fungi were treated to pearl millet seeds”

✓ located verbatim in the source · abstract, characters 439–527 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Polyphorus chloroform extract offered 42.5% disease protection.

Taxon
pearl milletCenchrus americanuse0e1
Treatment
chloroforme0e1
Outcome
disease protectione0e1
Value
42.5e0e1

Not reportedComparatorDirection

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

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“chloroform and petroleum ether extracts of Polyphorus spp., with 42.5 and 39.1% disease protection”

✓ located verbatim in the source · abstract, characters 882–980 · show in text ↑
e1

“Crude extracts of three different basidiomycete fungi were treated to pearl millet seeds”

✓ located verbatim in the source · abstract, characters 439–527 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Polyphorus petroleum ether extract offered 39.1% disease protection.

Taxon
pearl milletCenchrus americanuse0e1
Treatment
petroleum ether extracts of Polyphorus spp.e0e1
Outcome
disease protectione0e1
Value
39.1%e0e1

Not reportedComparatorDirection

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

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“chloroform and petroleum ether extracts of Polyphorus spp., with 42.5 and 39.1% disease protection”

✓ located verbatim in the source · abstract, characters 882–980 · show in text ↑
e1

“Crude extracts of three different basidiomycete fungi were treated to pearl millet seeds”

✓ located verbatim in the source · abstract, characters 439–527 · show in text ↑

botanical · Sclerospora graminicola · Cenchrus americanus (pearl millet)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

botanical · disease · Cenchrus americanus (pearl millet)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 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.