Paper · 2026 · Frontiers in Plant Science

Antiviral activity of Micrococcus luteus against the infection of bean yellow mosaic virus in faba bean

Mohsen Mohamed Elsharkawy; Faisal Ay Alzahrani

9
claims
16
verbatim quotes
1
citations
3
research areas
✓
Open access · cc-by

Abstract

Introduction Plant viruses severely affect agricultural crops and are the cause of almost half of all major plant diseases. No successful antiviral agents are now widely available for agricultural use against phytoviruses. Methods Micrococcus luteus was collected from the rhizosphere of faba bean and molecularly characterized via the 16S rRNA (Acc# PV650302). Soil inoculation greatly enhanced growth and induced systemic resistance to BYMV (Bean yellow mosaic virus) infection in faba bean plants grown in the greenhouse or field conditions. Results and Discussion Soil drenching application of Micrococcus luteus resulted in a 78% decrease in the severity of the disease and a 70% decrease in viral accumulation levels. Superoxide dismutase (SOD), total chlorophyll content, antioxidant enzymes like catalase (CAT), ascorbate peroxidase (APX), and polyphenol oxidase (PPO) were all significantly increased after M. luteus treatment. The levels of oxidative stress indicators, such as malondialdehyde (MDA) and hydrogen peroxide (H 2 O 2 ), were shown to be much lower after M. luteus treatment. The transcripts of genes involved in pathogenesis were found to be upregulated with these alterations. It is possible to use M. luteus as a biocontrol agent, which is a practical and environmentally friendly way to protect faba bean plants against BYMV infection, since it may increase faba bean growth and generate systemic resistance against BYMV disease. Antiviral action against viral infections in plants has never been previously documented for M. luteus .

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Claims 9

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Soil drenching with Micrococcus luteus reduced the severity of BYMV disease in faba bean by 78%.

Taxon
faba beanVicia fabat0
Treatment
Soil drenching application of Micrococcus luteuse1
Interactor
bean yellow mosaic virusBean yellow mosaic virust0pathogen
Second interactor
Micrococcus luteusMicrococcus luteust0biocontrol_agent
Outcome
severity of the diseasee1
Direction
decreasee1
Value
78%e1

Not reportedComparator

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

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗
Bean yellow mosaic virus
Bean yellow mosaic virus · InteractorDr. Parthasarathy Seethapathy, Amrita School of Agricultural Sciences, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗
Micrococcus luteus
Micrococcus luteus · Second interactorAlonnardi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Soil drenching application of Micrococcus luteus resulted in a 78% decrease in the severity of the disease and a 70% decrease in viral accumulation levels”

✓ located verbatim in the source · abstract, characters 568–722 · show in text ↑
t0

“Antiviral activity of Micrococcus luteus against the infection of bean yellow mosaic virus in faba bean”

✓ located verbatim in the source · title, characters 0–103 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Soil drenching with Micrococcus luteus reduced BYMV viral accumulation in faba bean by 70%.

Taxon
faba beanVicia fabat0
Treatment
Soil drenching application of Micrococcus luteuse1
Interactor
bean yellow mosaic virusBean yellow mosaic virust0pathogen
Second interactor
Micrococcus luteusMicrococcus luteust0biocontrol_agent
Outcome
viral accumulation levelse1
Direction
decreasee1
Value
70%e1

Not reportedComparator

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

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗
Bean yellow mosaic virus
Bean yellow mosaic virus · InteractorDr. Parthasarathy Seethapathy, Amrita School of Agricultural Sciences, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗
Micrococcus luteus
Micrococcus luteus · Second interactorAlonnardi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Soil drenching application of Micrococcus luteus resulted in a 78% decrease in the severity of the disease and a 70% decrease in viral accumulation levels”

✓ located verbatim in the source · abstract, characters 568–722 · show in text ↑
t0

“Antiviral activity of Micrococcus luteus against the infection of bean yellow mosaic virus in faba bean”

✓ located verbatim in the source · title, characters 0–103 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Soil inoculation with Micrococcus luteus greatly enhanced growth of faba bean plants.

Taxon
faba beanVicia fabae2
Treatment
Soil inoculatione2
Outcome
growthe2
Direction
enhancede2
Setting
greenhouse or field conditionse2

Not reportedComparator

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

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e2

“Soil inoculation greatly enhanced growth and induced systemic resistance to BYMV (Bean yellow mosaic virus) infection in faba bean plants grown in the greenhouse or field conditions”

✓ located verbatim in the source · abstract, characters 362–543 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Soil inoculation with Micrococcus luteus induced systemic resistance to BYMV in faba bean.

Taxon
faba beanVicia fabae2
Treatment
Soil inoculatione2
Interactor
Bean yellow mosaic virusBean yellow mosaic viruse2pathogen
Outcome
systemic resistance to BYMVe2
Direction
inducede2
Setting
greenhouse or field conditionse2

Not reportedComparator

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

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗
Bean yellow mosaic virus
Bean yellow mosaic virus · InteractorDr. Parthasarathy Seethapathy, Amrita School of Agricultural Sciences, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e2

“Soil inoculation greatly enhanced growth and induced systemic resistance to BYMV (Bean yellow mosaic virus) infection in faba bean plants grown in the greenhouse or field conditions”

✓ located verbatim in the source · abstract, characters 362–543 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Micrococcus luteus treatment significantly increased catalase, ascorbate peroxidase and polyphenol oxidase activities in BYMV-infected faba bean.

Taxon
faba beanVicia fabat0
Treatment
M. luteus treatmente3
Outcome
antioxidant enzymes like catalase (CAT), ascorbate peroxidase (APX), and polyphenol oxidase (PPO)e3
Direction
increasede3

Not reportedComparator

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

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e3

“Superoxide dismutase (SOD), total chlorophyll content, antioxidant enzymes like catalase (CAT), ascorbate peroxidase (APX), and polyphenol oxidase (PPO) were all significantly increased after M. luteus treatment”

✓ located verbatim in the source · abstract, characters 724–935 · show in text ↑
t0

“Antiviral activity of Micrococcus luteus against the infection of bean yellow mosaic virus in faba bean”

✓ located verbatim in the source · title, characters 0–103 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Micrococcus luteus treatment significantly increased superoxide dismutase activity and total chlorophyll content in faba bean.

Taxon
faba beanVicia fabat0
Treatment
M. luteus treatmente3
Outcome
Superoxide dismutase (SOD), total chlorophyll contente3
Direction
increasede3

Not reportedComparator

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

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e3

“Superoxide dismutase (SOD), total chlorophyll content, antioxidant enzymes like catalase (CAT), ascorbate peroxidase (APX), and polyphenol oxidase (PPO) were all significantly increased after M. luteus treatment”

✓ located verbatim in the source · abstract, characters 724–935 · show in text ↑
t0

“Antiviral activity of Micrococcus luteus against the infection of bean yellow mosaic virus in faba bean”

✓ located verbatim in the source · title, characters 0–103 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Micrococcus luteus treatment reduced oxidative stress indicators, malondialdehyde and hydrogen peroxide, in faba bean.

Taxon
faba beanVicia fabat0
Treatment
M. luteus treatmente4
Outcome
oxidative stress indicators, such as malondialdehyde (MDA) and hydrogen peroxide (H 2 O 2 )e4
Direction
lowere4

Not reportedComparator

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

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e4

“The levels of oxidative stress indicators, such as malondialdehyde (MDA) and hydrogen peroxide (H 2 O 2 ), were shown to be much lower after M. luteus treatment”

✓ located verbatim in the source · abstract, characters 937–1097 · show in text ↑
t0

“Antiviral activity of Micrococcus luteus against the infection of bean yellow mosaic virus in faba bean”

✓ located verbatim in the source · title, characters 0–103 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Transcripts of genes involved in pathogenesis were upregulated in faba bean with the treatment-associated alterations.

Taxon
faba beanVicia fabat0
Gene
genes involved in pathogenesise5
Outcome
transcripts of genes involved in pathogenesise5
Direction
upregulatede5

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

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e5

“The transcripts of genes involved in pathogenesis were found to be upregulated with these alterations”

✓ located verbatim in the source · abstract, characters 1099–1200 · show in text ↑
t0

“Antiviral activity of Micrococcus luteus against the infection of bean yellow mosaic virus in faba bean”

✓ located verbatim in the source · title, characters 0–103 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Micrococcus luteus could be used as a biocontrol agent to protect faba bean plants against BYMV infection.

Taxon
faba beanVicia fabae6
Outcome
protect faba bean plants against BYMV infectione6

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

Vicia faba
Vicia faba · TaxonRahmaziz · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e6

“It is possible to use M. luteus as a biocontrol agent, which is a practical and environmentally friendly way to protect faba bean plants against BYMV infection”

✓ located verbatim in the source · abstract, characters 1202–1361 · show in text ↑
t0

“Antiviral activity of Micrococcus luteus against the infection of bean yellow mosaic virus in faba bean”

✓ located verbatim in the source · title, characters 0–103 · show in text ↑

inoculation · growth · Vicia faba (faba bean)Positive and negative results

69 papers: 65 positive, 4 negative or no effect

64 papers in the same direction as this paper · 4 in the opposite direction

  1. negative
  2. negative
  3. negative

65 papers more in this group

See all 69 papers →

inoculation · Bean yellow mosaic virus · Vicia faba (faba bean)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

application · Bean yellow mosaic virus · Vicia faba (faba bean)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 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.