Paper · 1994 · Journal of Phytopathology

Development of Powdery Mildew Fungi on Leaves Submerged Under Water

A. Sivapalan

17
claims
30
verbatim quotes
13
citations
2
research areas
—
Not open access

Abstract

Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated. Submerging leaves immediately after inoculation removed 27–40% of conidia from leaves. Additionally, conidia either failed to germinate or germinated abnormally resulting in reduced elongating secondary hyphae (ESH) production. Submerging leaves 24 h after inoculation had, little effect on the numbers of ESH. Conidiophore production from mycelia occurred under water, although mildew growth was slower. Sporulating colonies treated with water produced conidia which had the ability to produce ESH. Experiments with E. aquilegiae on Aquilegia vulgaris, E. depressa on Arctium lappa, E. verbasci on Verbascum thapsus and Microsphaera alphitoides on Quercus rober suggest that the wettability of leaves and the presence of trichomes on leaf, surfaces play an important role in determining germination behaviour and subsequent ESH production on leaves.

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Claims 17

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Immediate submersion removed 27–40% of Erysiphe graminis f. sp. hordei conidia from barley leaves.

Organ / stage
leavese0
Treatment
Submerging leaves immediately after inoculatione0
Interactor
Erysiphe graminis f. sp. hordeiBlumeria hordeie1pathogen
Outcome
conidiae0
Direction
removede0
Value
27–40%e0

Not reportedComparator

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Submerging leaves immediately after inoculation removed 27–40% of conidia from leaves.”

✓ located verbatim in the source · abstract, characters 196–282 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Immediate submersion removed 27–40% of E. pisi f. sp. pisi conidia from pea leaves.

Organ / stage
leavese0
Treatment
Submerging leaves immediately after inoculatione0
Interactor
E. pisi f. sp. pisiErysiphe pisie1pathogen
Outcome
conidiae0
Direction
removede0
Value
27–40%e0

Not reportedComparator

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗
Erysiphe pisi
Erysiphe pisi · InteractorJerzy Opioła · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Submerging leaves immediately after inoculation removed 27–40% of conidia from leaves.”

✓ located verbatim in the source · abstract, characters 196–282 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Immediate submersion removed 27–40% of Sphaerotheca pannosa conidia from rose leaves.

Taxon
rosee1
Organ / stage
leavese0
Treatment
Submerging leaves immediately after inoculatione0
Interactor
Sphaerotheca pannosaPodosphaera pannosae1pathogen
Outcome
conidiae0
Direction
removede0
Value
27–40%e0

Not reportedComparator

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

Podosphaera pannosa
Podosphaera pannosa · InteractorWilhelm Zimmerling PAR · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Submerging leaves immediately after inoculation removed 27–40% of conidia from leaves.”

✓ located verbatim in the source · abstract, characters 196–282 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under water, Erysiphe graminis f. sp. hordei conidia had abnormal germination and reduced ESH production on barley.

Treatment
Submerging inoculated leaves under watere1
Interactor
Erysiphe graminis f. sp. hordeiBlumeria hordeie1pathogen
Outcome
elongating secondary hyphae (ESH) productione0
Direction
reducede0

Not reportedComparator

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Additionally, conidia either failed to germinate or germinated abnormally resulting in reduced elongating secondary hyphae (ESH) production.”

✓ located verbatim in the source · abstract, characters 283–423 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under water, E. pisi f. sp. pisi conidia had abnormal germination and reduced ESH production on pea.

Treatment
Submerging inoculated leaves under watere1
Interactor
E. pisi f. sp. pisiErysiphe pisie1pathogen
Outcome
elongating secondary hyphae (ESH) productione0
Direction
reducede0

Not reportedComparator

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗
Erysiphe pisi
Erysiphe pisi · InteractorJerzy Opioła · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Additionally, conidia either failed to germinate or germinated abnormally resulting in reduced elongating secondary hyphae (ESH) production.”

✓ located verbatim in the source · abstract, characters 283–423 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under water, Sphaerotheca pannosa conidia had abnormal germination and reduced ESH production on rose.

Taxon
rosee1
Treatment
Submerging inoculated leaves under watere1
Interactor
Sphaerotheca pannosaPodosphaera pannosae1pathogen
Outcome
elongating secondary hyphae (ESH) productione0
Direction
reducede0

Not reportedComparator

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

Podosphaera pannosa
Podosphaera pannosa · InteractorWilhelm Zimmerling PAR · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Additionally, conidia either failed to germinate or germinated abnormally resulting in reduced elongating secondary hyphae (ESH) production.”

✓ located verbatim in the source · abstract, characters 283–423 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Submersion 24 h after inoculation had little effect on Erysiphe graminis f. sp. hordei ESH numbers on barley.

Treatment
Submerging leaves 24 h after inoculatione0
Interactor
Erysiphe graminis f. sp. hordeiBlumeria hordeie1pathogen
Outcome
numbers of ESHe0
Direction
little effecte0

Not reportedComparator

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Submerging leaves 24 h after inoculation had, little effect on the numbers of ESH.”

✓ located verbatim in the source · abstract, characters 424–506 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Submersion 24 h after inoculation had little effect on E. pisi f. sp. pisi ESH numbers on pea.

Treatment
Submerging leaves 24 h after inoculatione0
Interactor
E. pisi f. sp. pisiErysiphe pisie1pathogen
Outcome
numbers of ESHe0
Direction
little effecte0

Not reportedComparator

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗
Erysiphe pisi
Erysiphe pisi · InteractorJerzy Opioła · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Submerging leaves 24 h after inoculation had, little effect on the numbers of ESH.”

✓ located verbatim in the source · abstract, characters 424–506 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Submersion 24 h after inoculation had little effect on Sphaerotheca pannosa ESH numbers on rose.

Taxon
rosee1
Treatment
Submerging leaves 24 h after inoculatione0
Interactor
Sphaerotheca pannosaPodosphaera pannosae1pathogen
Outcome
numbers of ESHe0
Direction
little effecte0

Not reportedComparator

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

Podosphaera pannosa
Podosphaera pannosa · InteractorWilhelm Zimmerling PAR · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Submerging leaves 24 h after inoculation had, little effect on the numbers of ESH.”

✓ located verbatim in the source · abstract, characters 424–506 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Erysiphe graminis f. sp. hordei growth on barley was slower under water, although conidiophores formed.

Treatment
under watere0
Interactor
Erysiphe graminis f. sp. hordeiBlumeria hordeie1pathogen
Outcome
mildew growthe0
Direction
slowere0

Not reportedComparator

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Conidiophore production from mycelia occurred under water, although mildew growth was slower.”

✓ located verbatim in the source · abstract, characters 507–600 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

E. pisi f. sp. pisi growth on pea was slower under water, although conidiophores formed.

Treatment
under watere0
Interactor
E. pisi f. sp. pisiErysiphe pisie1pathogen
Outcome
mildew growthe0
Direction
slowere0

Not reportedComparator

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗
Erysiphe pisi
Erysiphe pisi · InteractorJerzy Opioła · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Conidiophore production from mycelia occurred under water, although mildew growth was slower.”

✓ located verbatim in the source · abstract, characters 507–600 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sphaerotheca pannosa growth on rose was slower under water, although conidiophores formed.

Taxon
rosee1
Treatment
under watere0
Interactor
Sphaerotheca pannosaPodosphaera pannosae1pathogen
Outcome
mildew growthe0
Direction
slowere0

Not reportedComparator

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

Podosphaera pannosa
Podosphaera pannosa · InteractorWilhelm Zimmerling PAR · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Conidiophore production from mycelia occurred under water, although mildew growth was slower.”

✓ located verbatim in the source · abstract, characters 507–600 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Water-treated sporulating colonies produced conidia capable of ESH production.

Treatment
treated with watere0
Interactor
Erysiphe graminis f. sp. hordeiBlumeria hordeie1pathogen
Outcome
ability to produce ESHe0

Not reportedComparatorDirection

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Sporulating colonies treated with water produced conidia which had the ability to produce ESH.”

✓ located verbatim in the source · abstract, characters 601–695 · show in text ↑
e1

“Effects of submerging inoculated leaves under water on the development of Erysiphe graminis f. sp. hordei on barley, E. pisi f. sp. pisi on pea and Sphaerotheca pannosa on rose were investigated.”

✓ located verbatim in the source · abstract, characters 0–195 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Leaf wettability and trichomes appear to affect E. aquilegiae germination and ESH production on Aquilegia vulgaris.

Taxon
Aquilegia vulgarisAquilegia vulgarise0
Interactor
E. aquilegiaeErysiphe aquilegiaee0pathogen
Outcome
germination behaviour and subsequent ESH productione0
Qualifier
wettability of leaves and the presence of trichomese0

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

Aquilegia vulgaris
Aquilegia vulgaris · TaxonIvar Leidus · CC BY-SA 3.0 ee · Wikimedia Commons ↗
Erysiphe aquilegiae
Erysiphe aquilegiae · Interactorbjoerns · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Experiments with E. aquilegiae on Aquilegia vulgaris, E. depressa on Arctium lappa, E. verbasci on Verbascum thapsus and Microsphaera alphitoides on Quercus rober suggest that the wettability of leaves and the presence of trichomes on leaf, surfaces play an important role in determining germination behaviour and subsequent ESH production on leaves.”

✓ located verbatim in the source · abstract, characters 696–1046 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Leaf wettability and trichomes appear to affect E. depressa germination and ESH production on Arctium lappa.

Taxon
Arctium lappaArctium lappae0
Interactor
E. depressae0pathogen
Outcome
germination behaviour and subsequent ESH productione0
Qualifier
wettability of leaves and the presence of trichomese0

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

Arctium lappa
Arctium lappa · TaxonChristian Fischer · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Experiments with E. aquilegiae on Aquilegia vulgaris, E. depressa on Arctium lappa, E. verbasci on Verbascum thapsus and Microsphaera alphitoides on Quercus rober suggest that the wettability of leaves and the presence of trichomes on leaf, surfaces play an important role in determining germination behaviour and subsequent ESH production on leaves.”

✓ located verbatim in the source · abstract, characters 696–1046 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Leaf wettability and trichomes appear to affect E. verbasci germination and ESH production on Verbascum thapsus.

Taxon
Verbascum thapsusVerbascum thapsuse0
Interactor
E. verbascie0pathogen
Outcome
germination behaviour and subsequent ESH productione0
Qualifier
wettability of leaves and the presence of trichomese0

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

Verbascum thapsus
Verbascum thapsus · TaxonW. Bulach · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Experiments with E. aquilegiae on Aquilegia vulgaris, E. depressa on Arctium lappa, E. verbasci on Verbascum thapsus and Microsphaera alphitoides on Quercus rober suggest that the wettability of leaves and the presence of trichomes on leaf, surfaces play an important role in determining germination behaviour and subsequent ESH production on leaves.”

✓ located verbatim in the source · abstract, characters 696–1046 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Leaf wettability and trichomes appear to affect Microsphaera alphitoides germination and ESH production on Quercus rober.

Taxon
Quercus robere0
Interactor
Microsphaera alphitoidesErysiphe alphitoidese0pathogen
Outcome
germination behaviour and subsequent ESH productione0
Qualifier
wettability of leaves and the presence of trichomese0

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

Erysiphe alphitoides
Erysiphe alphitoides · InteractorRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Experiments with E. aquilegiae on Aquilegia vulgaris, E. depressa on Arctium lappa, E. verbasci on Verbascum thapsus and Microsphaera alphitoides on Quercus rober suggest that the wettability of leaves and the presence of trichomes on leaf, surfaces play an important role in determining germination behaviour and subsequent ESH production on leaves.”

✓ located verbatim in the source · abstract, characters 696–1046 · show in text ↑

inoculation · Erysiphe pisi · Lathyrus oleraceus (pea)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

3 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

inoculation · Blumeria hordei · Hordeum vulgare (barley)Positive and negative results

12 papers: 9 positive, 3 negative or no effect

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

  1. no effect
  2. no effect
  3. negative

8 papers more in this group

See all 12 papers →

inoculation · Podosphaera pannosa · RosaResults 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 →

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.