Abstract
Abstract Tomato is one of the leading crops in Tunisia in terms of weight consumed (20 kg/per person/year). Preserving the quality of the fruit from field to consumer is essential to successful marketing. Grey mould rot induced by Botrytis cinerea is an important cause of postharvest loss depending on season and handling practices. We describe here the ability of halotolerant to moderately halophilic bacteria isolated from different Tunisian Sebkhas (hypersaline soils) to protect fresh‐market tomato fruits from B. cinerea . The tomatoes tested were at two different stages of ripening, (i) mature‐green and (ii) red. Six strains significantly reduced growth of the pathogens from 67% to 87%. The effectiveness of these antagonists was also confirmed on green tomatoes; in which the fruit rot protection rate ranged from 74% to 100%. The antagonists were characterized by morphological, biochemical and physiological tests as well as 16S rDNA sequencing. The halotolerant effective isolates were identified as belonging to one of the species Bacillus subtilis (M1‐20, J9) or B. licheniformis (J24). One effective moderately halophilic isolate (M2‐26) was identified as Planococcus rifietoensis . These strains are a source of hydrolytic enzymes such as chitinases, proteases, laminarinases, amylases, lipases and cellulases. For comparison, 12 halotolerant or moderately halophilic strains obtained from DSM culture collection were also evaluated for their antifungal activity against B. cinerea on tomato fruits. The most effective strains were Halomonas subglaciescola , Halobacillus litoralis , Marinococcus halophilus , Salinococcus roseus , Halovibrio variabilis and Halobacillus halophilus with a percentage of grey mould rot reduction ranging from 71% to 97%. Inoculation of mature‐green tomatoes by the bacterial antagonist of Halobacillus trueperi resulted in no disease development. Our results indicate that the use of halotolerant to halophilic micro‐organisms should be helpful in reducing grey mould disease of stored tomatoes.
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Claims 8
Claim · model-written summary
Six bacterial strains reduced pathogen growth by 67% to 87%.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Six strainse0
- Interactor
- B. cinerea
Botrytis cinereae1pathogen - Outcome
- growth of the pathogense0
- Direction
- reducede0
- Value
- 67% to 87%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six strains significantly reduced growth of the pathogens from 67% to 87%.”
t0“Tomato Fruits”
e1“fresh‐market tomato fruits from B. cinerea”
Claim · model-written summary
Bacterial antagonists protected green tomatoes from fruit rot at rates of 74% to 100%.
- Taxon
- tomatoesSolanum lycopersicume0
- Organ / stage
- green tomatoese0
- Treatment
- these antagonistse0
- Interactor
- B. cinereaBotrytis cinereae1pathogen
- Outcome
- fruit rot protection ratee0
- Direction
- protectione0
- Value
- 74% to 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effectiveness of these antagonists was also confirmed on green tomatoes; in which the fruit rot protection rate ranged from 74% to 100%.”
e1“fresh‐market tomato fruits from B. cinerea”
Claim · model-written summary
Effective halotolerant isolates were identified as Bacillus subtilis or B. licheniformis.
- Taxon
- TomatoSolanum lycopersicumt0
- Interactor
- Bacillus subtilis
Bacillus subtilise0biocontrol_agent - Outcome
- identified as belonging to one of the species Bacillus subtilis (M1‐20, J9) or B. licheniformis (J24)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The halotolerant effective isolates were identified as belonging to one of the species Bacillus subtilis (M1‐20, J9) or B. licheniformis (J24).”
t0“Tomato Fruits”
Claim · model-written summary
The effective isolate M2‐26 was identified as Planococcus rifietoensis.
- Taxon
- TomatoSolanum lycopersicumt0
- Interactor
- Planococcus rifietoensisPlanococcus rifietoensise0biocontrol_agent
- Outcome
- identified as Planococcus rifietoensise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One effective moderately halophilic isolate (M2‐26) was identified as Planococcus rifietoensis .”
t0“Tomato Fruits”
Claim · model-written summary
The antagonist strains produced several hydrolytic enzymes.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- a source of hydrolytic enzymese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These strains are a source of hydrolytic enzymes such as chitinases, proteases, laminarinases, amylases, lipases and cellulases.”
t0“Tomato Fruits”
Claim · model-written summary
The most effective collection strains reduced tomato grey mould rot by 71% to 97%.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- The most effective strainse0
- Interactor
- B. cinereaBotrytis cinereae1pathogen
- Outcome
- grey mould rot reductione0
- Direction
- reductione0
- Value
- 71% to 97%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most effective strains were Halomonas subglaciescola , Halobacillus litoralis , Marinococcus halophilus , Salinococcus roseus , Halovibrio variabilis and Halobacillus halophilus with a percentage of grey mould rot reduction ranging from 71% to 97%.”
e1“B. cinerea on tomato fruits”
Claim · model-written summary
Halobacillus trueperi inoculation prevented disease development in mature-green tomatoes.
- Taxon
- tomatoesSolanum lycopersicume0
- Organ / stage
- mature‐green tomatoese0
- Treatment
- Inoculation of mature‐green tomatoes by the bacterial antagonist of Halobacillus trueperie0
- Interactor
- B. cinereaBotrytis cinereae1pathogen
- Second interactor
- Halobacillus trueperiHalobacillus trueperie0biocontrol_agent
- Outcome
- no disease developmente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation of mature‐green tomatoes by the bacterial antagonist of Halobacillus trueperi resulted in no disease development.”
e1“fresh‐market tomato fruits from B. cinerea”
Claim · model-written summary
The authors recommend halotolerant to halophilic microorganisms for reducing stored tomato grey mould.
- Taxon
- tomatoesSolanum lycopersicume0
- Interactor
- B. cinereaBotrytis cinereae1pathogen
- Outcome
- the use of halotolerant to halophilic micro‐organismse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of halotolerant to halophilic micro‐organisms should be helpful in reducing grey mould disease of stored tomatoes”
e1“fresh‐market tomato fruits from B. cinerea”
The same questions in other papers
biocontrol · Botrytis cinerea · Solanum lycopersicum (tomato)Positive and negative results
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- negative
- positive
- positive
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See all 7 papers →inoculation · Botrytis cinerea · Solanum lycopersicum (tomato)Positive and negative results
20 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- no effect
21 papers more in this group
See all 25 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.