Paper · 2012 · Egyptian Journal of Microbiology

Antiviral Effects of the Liquid Culture, Cell Free Supernatants and Extracellular Products from Serratia marcescens subsp. marcescens against Watermelon Mosaic Virus (WMV)

Seham Abd; S Mahgoub; Abd El-Shafi; et al.

8
claims
19
verbatim quotes
2
citations
2
research areas
✓
Open access

Abstract

THIS STUDY was to specify the potential antiviral action of Serratia marcescens subsp. marcescens and its extracellular products against watermelon mosaic virus (WMV). The highest level of protection observed occurred in experiments, where bacteria were mixed with the virus in vitro before inoculation, resulting in gave 100% viral inhibition. S. marcescens significantly improved (p< 0.05) several growth parameters in all experiments compared to viral control. The highest level of virus inhibition obtained when a mixture of all compounds extracted and purified from S. marcescens subsp. marcescens was applied to cucumber plants reducing infection by 95% . The results of RT-PCR showed that in vitro liquid bacterial culture treatment and applied 24 hr after virus inoculation treatment highly reduced the accumulation of WMV in treated plant leaves . The usage of S. marcescens in vitro and in vivo led to increasing in total protein, polyphenoloxidase, and phenolic compounds compared to viral-infected and healthy controls, while reducing glutathione oxidase. S. marcescens and its metabolic products found in culture filtrates show promise as an effective biocontrol agent for WMV infection in plants and appear to promote plant growth even in the absence of virus

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Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mixing Serratia with virus before inoculation gave 100% viral inhibition.

Taxon
cucumber plantsCucumis sativuse1
Treatment
bacteria were mixed with the virus in vitro before inoculatione0
Interactor
Watermelon Mosaic VirusWatermelon mosaic virust0pathogen
Outcome
viral inhibitione0
Value
100%e0

Not reportedComparatorDirection

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗
Watermelon mosaic virus
Watermelon mosaic virus · InteractorDr. Jan Hinrichs-Berger, Landwirtschaftliches Technologiezentrum Augustenberg, Karlsruhe. · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Watermelon Mosaic Virus (WMV)”

✓ located verbatim in the source · title, characters 142–171 · show in text ↑
e0

“bacteria were mixed with the virus in vitro before inoculation, resulting in gave 100% viral inhibition”

✓ located verbatim in the source · abstract, characters 240–343 · show in text ↑
e1

“cucumber plants”

✓ located verbatim in the source · abstract, characters 618–633 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Serratia significantly improved several growth parameters relative to viral controls.

Taxon
cucumber plantsCucumis sativuse1
Treatment
S. marcescense0
Interactor
S. marcescensSerratia marcescense0biocontrol_agent
Outcome
several growth parameterse0
Direction
improvede0
Comparator
viral controle0

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗
Serratia marcescens
Serratia marcescens · InteractorPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Serratia marcescens subsp. marcescens”

✓ located verbatim in the source · title, characters 96–133 · show in text ↑
e1

“cucumber plants”

✓ located verbatim in the source · abstract, characters 618–633 · show in text ↑
e0

“S. marcescens significantly improved (p< 0.05) several growth parameters in all experiments compared to viral control”

✓ located verbatim in the source · abstract, characters 345–462 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A mixture of purified Serratia compounds reduced infection in cucumber by 95%.

Taxon
cucumber plantsCucumis sativuse0
Treatment
a mixture of all compounds extracted and purified from S. marcescens subsp. marcescense0
Interactor
Watermelon Mosaic VirusWatermelon mosaic virust0pathogen
Second interactor
S. marcescens subsp. marcescensSerratia marcescense0biocontrol_agent
Outcome
infectione0
Direction
reducinge0
Value
95%e0

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗
Watermelon mosaic virus
Watermelon mosaic virus · InteractorDr. Jan Hinrichs-Berger, Landwirtschaftliches Technologiezentrum Augustenberg, Karlsruhe. · CC BY 4.0 · Wikimedia Commons ↗
Serratia marcescens
Serratia marcescens · Second interactorPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Watermelon Mosaic Virus (WMV)”

✓ located verbatim in the source · title, characters 142–171 · show in text ↑
e0

“a mixture of all compounds extracted and purified from S. marcescens subsp. marcescens was applied to cucumber plants reducing infection by 95%”

✓ located verbatim in the source · abstract, characters 516–659 · show in text ↑
e1

“cucumber plants”

✓ located verbatim in the source · abstract, characters 618–633 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Liquid bacterial culture treatment reduced WMV accumulation in leaves.

Taxon
cucumber plantsCucumis sativuse1
Treatment
in vitro liquid bacterial culture treatmente0
Interactor
WMVe0pathogen
Outcome
accumulation of WMV in treated plant leavese0
Direction
reducede0

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“cucumber plants”

✓ located verbatim in the source · abstract, characters 618–633 · show in text ↑
e0

“in vitro liquid bacterial culture treatment and applied 24 hr after virus inoculation treatment highly reduced the accumulation of WMV in treated plant leaves”

✓ located verbatim in the source · abstract, characters 696–854 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment 24 hours after virus inoculation reduced WMV accumulation in leaves.

Taxon
cucumber plantsCucumis sativuse1
Treatment
applied 24 hr after virus inoculation treatmente0
Interactor
WMVe0pathogen
Outcome
accumulation of WMV in treated plant leavese0
Direction
reducede0

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“cucumber plants”

✓ located verbatim in the source · abstract, characters 618–633 · show in text ↑
e0

“in vitro liquid bacterial culture treatment and applied 24 hr after virus inoculation treatment highly reduced the accumulation of WMV in treated plant leaves”

✓ located verbatim in the source · abstract, characters 696–854 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Serratia use increased total protein, polyphenoloxidase and phenolic compounds versus infected and healthy controls.

Taxon
cucumber plantsCucumis sativuse1
Treatment
S. marcescens in vitro and in vivoe0
Interactor
S. marcescensSerratia marcescense0biocontrol_agent
Outcome
total protein, polyphenoloxidase, and phenolic compoundse0
Direction
increasinge0
Comparator
viral-infected and healthy controlse0

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗
Serratia marcescens
Serratia marcescens · InteractorPublic domain · Wikimedia Commons ↗

Verbatim

e1

“cucumber plants”

✓ located verbatim in the source · abstract, characters 618–633 · show in text ↑
e0

“S. marcescens in vitro and in vivo led to increasing in total protein, polyphenoloxidase, and phenolic compounds compared to viral-infected and healthy controls, while reducing glutathione oxidase”

✓ located verbatim in the source · abstract, characters 870–1066 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Serratia use reduced glutathione oxidase compared with infected and healthy controls.

Taxon
cucumber plantsCucumis sativuse1
Treatment
S. marcescens in vitro and in vivoe0
Interactor
S. marcescensSerratia marcescense0biocontrol_agent
Outcome
glutathione oxidasee0
Direction
reducinge0
Comparator
viral-infected and healthy controlse0

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗
Serratia marcescens
Serratia marcescens · InteractorPublic domain · Wikimedia Commons ↗

Verbatim

e1

“cucumber plants”

✓ located verbatim in the source · abstract, characters 618–633 · show in text ↑
e0

“S. marcescens in vitro and in vivo led to increasing in total protein, polyphenoloxidase, and phenolic compounds compared to viral-infected and healthy controls, while reducing glutathione oxidase”

✓ located verbatim in the source · abstract, characters 870–1066 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors consider Serratia and its metabolites promising for WMV control and plant growth promotion.

Taxon
cucumber plantsCucumis sativuse1
Interactor
WMVe0pathogen
Second interactor
S. marcescensSerratia marcescense0biocontrol_agent
Outcome
effective biocontrol agent for WMV infection in plantse0

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗
Serratia marcescens
Serratia marcescens · Second interactorPublic domain · Wikimedia Commons ↗

Verbatim

e1

“cucumber plants”

✓ located verbatim in the source · abstract, characters 618–633 · show in text ↑
e0

“S. marcescens and its metabolic products found in culture filtrates show promise as an effective biocontrol agent for WMV infection in plants and appear to promote plant growth even in the absence of virus”

✓ located verbatim in the source · abstract, characters 1068–1273 · show in text ↑

Serratia marcescens · growth · Cucumis sativus (cucumber)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

1 paper in the same direction as this paper · 1 reporting no difference from an alternative

  1. no effect
  2. positive
See all 3 papers →

inoculation · disease · Cucumis sativus (cucumber)Positive and negative results

83 papers: 50 positive, 33 negative or no effect

49 papers in the same direction as this paper · 33 in the opposite direction

  1. negative
  2. negative
  3. negative

79 papers more in this group

See all 83 papers →

in vitro · disease · Cucumis sativus (cucumber)Results agree

7 papers: 7 positive, 0 negative or no effect

6 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

3 papers more in this group

See all 7 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.