Abstract
A new yeast antagonist, Pichia membranefaciens, isolated from wounds of peach fruit, was evaluated for its biocontrol capability against Rhizopus stolonifer on nectarine fruits at different temperatures and with other treatments. P. membranefaciens at 5 × 10 8 CFU/ml of washed-cell suspension completely inhibited Rhizopus rot in nectarine wounds artificially inoculated with 5 × 10 4 spores per ml at 25, 15, and 3°C. A culture filtrate of the yeast antagonist failed to provide any protection against Rhizopus rot in nectarine fruits. The yeast mixed with iprodione at 100 μg a.i./ml gave better control of R. stolonifer than either yeast or iprodione alone. A solution of 20 g CaCl 2 per liter enhanced the efficacy of P. membranefaciens (10 7 to 10 8 CFU/ml) as an aqueous suspension. Rapid colonization of the yeast in wounds was observed during the first 48 h at 25 and 15°C. P. membranefaciens at 5 × 10 8 CFU/ml was effective when applied 0 to 72 h before the pathogen, while at 1 × 10 8 CFU/ml, its efficacy was best when applied 24 to 48 h prior to inoculation with R. stolonifer. However, its efficacy was significantly reduced when the yeast was applied simultaneously with the pathogen, with disease incidence of 60% and lesion diameter of 37 mm.
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Claims 10
Claim · model-written summary
Yeast suspension completely inhibited Rhizopus rot at three temperatures.
- Taxon
- nectarine
Prunus persica var. nucipersicae0 - Treatment
- P. membranefaciens at 5 × 10 8 CFU/ml of washed-cell suspensione0
- Second interactor
- P. membranefaciense0biocontrol_agent
- Outcome
- Rhizopus rote0
- Direction
- completely inhibitede0
- Qualifier
- 25, 15, and 3°Ce0
_spores%2C_which_is_green_using_Light_Microscope%2C_Normal_image_without_any_coloring_or_processing_By_researcher_El_sayed_Al_gayar%2C_Faculty_of_Agriculture_Damietta_University.jpg?width=60){kind=small}
RhizopusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_spores%2C_which_is_green_using_Light_Microscope%2C_Normal_image_without_any_coloring_or_processing_By_researcher_El_sayed_Al_gayar%2C_Faculty_of_Agriculture_Damietta_University.jpg?width=500)
Verbatim
e0“P. membranefaciens at 5 × 10 8 CFU/ml of washed-cell suspension completely inhibited Rhizopus rot in nectarine wounds artificially inoculated with 5 × 10 4 spores per ml at 25, 15, and 3°C”
Claim · model-written summary
Yeast culture filtrate failed to protect nectarine fruit from rot.
- Taxon
- nectarinePrunus persica var. nucipersicae0
- Treatment
- A culture filtrate of the yeast antagoniste0
- Outcome
- protection against Rhizopus rote0
- Direction
- failed to provide anye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A culture filtrate of the yeast antagonist failed to provide any protection against Rhizopus rot in nectarine fruits”
Claim · model-written summary
Yeast mixed with iprodione controlled the pathogen better than either alone.
- Taxon
- NectarinePrunus persica var. nucipersicat0
- Treatment
- The yeast mixed with iprodione at 100 μg a.i./mle0
- Interactor
- R. stolonifer
Rhizopus stolonifere0pathogen - Outcome
- control of R. stolonifere0
- Direction
- bettere0
- Comparator
- either yeast or iprodione alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yeast mixed with iprodione at 100 μg a.i./ml gave better control of R. stolonifer than either yeast or iprodione alone”
t0“Nectarine Fruits”
Claim · model-written summary
Calcium chloride enhanced yeast biocontrol efficacy.
- Taxon
- NectarinePrunus persica var. nucipersicat0
- Treatment
- A solution of 20 g CaCl 2 per litere0
- Interactor
- P. membranefaciense0biocontrol_agent
- Outcome
- efficacy of P. membranefaciense0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A solution of 20 g CaCl 2 per liter enhanced the efficacy of P. membranefaciens (10 7 to 10 8 CFU/ml) as an aqueous suspension”
t0“Nectarine Fruits”
Claim · model-written summary
Yeast rapidly colonized fruit wounds in the first 48 hours.
- Taxon
- NectarinePrunus persica var. nucipersicat0
- Outcome
- Rapid colonization of the yeast in woundse0
- Qualifier
- during the first 48 h at 25 and 15°Ce0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rapid colonization of the yeast in wounds was observed during the first 48 h at 25 and 15°C”
t0“Nectarine Fruits”
Claim · model-written summary
High-dose yeast was effective when applied up to 72 hours before pathogen inoculation.
- Taxon
- NectarinePrunus persica var. nucipersicat0
- Treatment
- P. membranefaciens at 5 × 10 8 CFU/mle0
- Interactor
- P. membranefaciense0biocontrol_agent
- Outcome
- effectivee0
- Direction
- effectivee0
- Qualifier
- 0 to 72 h before the pathogene0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. membranefaciens at 5 × 10 8 CFU/ml was effective when applied 0 to 72 h before the pathogen”
t0“Nectarine Fruits”
Claim · model-written summary
Lower-dose yeast worked best 24 to 48 hours before pathogen inoculation.
- Taxon
- NectarinePrunus persica var. nucipersicat0
- Treatment
- at 1 × 10 8 CFU/mle0
- Interactor
- R. stoloniferRhizopus stolonifere0pathogen
- Outcome
- efficacye0
- Direction
- beste0
- Qualifier
- 24 to 48 h prior to inoculatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 1 × 10 8 CFU/ml, its efficacy was best when applied 24 to 48 h prior to inoculation with R. stolonifer”
t0“Nectarine Fruits”
Claim · model-written summary
Simultaneous yeast and pathogen application significantly reduced efficacy.
- Taxon
- NectarinePrunus persica var. nucipersicat0
- Treatment
- the yeast was applied simultaneously with the pathogene0
- Outcome
- efficacye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its efficacy was significantly reduced when the yeast was applied simultaneously with the pathogen”
t0“Nectarine Fruits”
Claim · model-written summary
Simultaneous application resulted in 60% disease incidence.
- Taxon
- NectarinePrunus persica var. nucipersicat0
- Outcome
- disease incidencee0
- Value
- 60%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“disease incidence of 60%”
t0“Nectarine Fruits”
Claim · model-written summary
Simultaneous application resulted in 37 mm lesions.
- Taxon
- NectarinePrunus persica var. nucipersicat0
- Outcome
- lesion diametere0
- Value
- 37 mme0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lesion diameter of 37 mm”
t0“Nectarine Fruits”
The same questions in other papers
iprodione · Rhizopus stolonifer · Prunus persica (peach)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.