Abstract
Valsa pyri-induced pear Valsa canker is among the most prevalent diseases to impact pear quality and yields. Biocontrol strategies to control plant disease represent an attractive alternative to the application of fungicides. In this study, the potential utility of Bacillus atrophaeus strain HF1 was assessed as a biocontrol agent against pear Valsa canker. Strain HF1 suppressed V. pyri mycelium growth by 61.20% and induced the development of malformed hyphae. Both culture filtrate and volatile organic compounds (VOCs) derived from strain HF1 were able to antagonize V. pyri growth. Treatment with strain HF1-derived culture filtrate or VOCs also induced the destruction of hyphal cell membranes. Headspace mixtures prepared from strain HF1 were analyzed, leading to the identification of 27 potential VOCs. Of the thirteen pure chemicals tested, iberverin, hexanoic acid, and 2-methylvaleraldehyde exhibited the strongest antifungal effects on V. pyri, with respective EC50 values of 0.30, 6.65, and 74.07 μL L−1. Fumigation treatment of pear twigs with each of these three compounds was also sufficient to prevent the development of pear Valsa canker. As such, these results demonstrate that B. atrophaeus strain HF1 and the volatile compounds iberverin, hexanoic acid, and 2-methylvaleraldehyde exhibit promise as novel candidate biocontrol agents against pear Valsa canker.
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Claims 13
Claim · model-written summary
HF1 suppressed V. pyri mycelium growth by 61.20%.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Treatment
- Strain HF1e0
- Interactor
- V. pyrie0pathogen
- Second interactor
- HF1Haloferacalesvirus HF1e0biocontrol_agent
- Outcome
- V. pyri mycelium growthe0
- Direction
- suppressede0
- Value
- 61.20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“Strain HF1 suppressed V. pyri mycelium growth by 61.20%”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
Claim · model-written summary
HF1 caused malformed V. pyri hyphae.
- Taxon
- pearPyrus communist0e1
- Second interactor
- HF1Haloferacalesvirus HF1t0e1biocontrol_agent
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“induced the development of malformed hyphae”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
e1“Strain HF1 suppressed V. pyri mycelium growth by 61.20%”
Claim · model-written summary
HF1 culture filtrate antagonized V. pyri growth.
- Taxon
- pearPyrus communist0
- Treatment
- culture filtratee0
- Interactor
- V. pyrie0pathogen
- Second interactor
- strain HF1e0biocontrol_agent
- Outcome
- V. pyri growthe0
- Direction
- antagonizee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both culture filtrate and volatile organic compounds (VOCs) derived from strain HF1 were able to antagonize V. pyri growth”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
Claim · model-written summary
HF1 VOCs antagonized V. pyri growth.
- Taxon
- pearPyrus communist0
- Treatment
- volatile organic compounds (VOCs) derived from strain HF1e0
- Interactor
- V. pyrie0pathogen
- Second interactor
- strain HF1e0biocontrol_agent
- Outcome
- V. pyri growthe0
- Direction
- antagonizee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both culture filtrate and volatile organic compounds (VOCs) derived from strain HF1 were able to antagonize V. pyri growth”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
Claim · model-written summary
HF1 culture filtrate destroyed V. pyri hyphal membranes.
- Taxon
- pearPyrus communist0
- Treatment
- strain HF1-derived culture filtratee0
- Interactor
- Valsa pyrit0pathogen
- Second interactor
- HF1Haloferacalesvirus HF1e0biocontrol_agent
- Outcome
- destruction of hyphal cell membranese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with strain HF1-derived culture filtrate or VOCs also induced the destruction of hyphal cell membranes”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
Claim · model-written summary
HF1 VOCs destroyed V. pyri hyphal membranes.
- Taxon
- pearPyrus communist0
- Treatment
- VOCse0
- Interactor
- Valsa pyrit0pathogen
- Second interactor
- HF1Haloferacalesvirus HF1e0biocontrol_agent
- Outcome
- destruction of hyphal cell membranese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with strain HF1-derived culture filtrate or VOCs also induced the destruction of hyphal cell membranes”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
Claim · model-written summary
HF1 headspace contained 27 potential VOCs.
- Taxon
- pearPyrus communist0
- Interactor
- strain HF1e0biocontrol_agent
- Outcome
- potential VOCse0
- Value
- 27e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Headspace mixtures prepared from strain HF1 were analyzed, leading to the identification of 27 potential VOCs”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
Claim · model-written summary
Iberverin inhibited V. pyri with EC50 0.30 μL L−1.
- Taxon
- pearPyrus communist0
- Treatment
- iberverine0
- Interactor
- V. pyrie0pathogen
- Outcome
- antifungal effects on V. pyrie0
- Direction
- strongeste0
- Value
- 0.30e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“iberverin, hexanoic acid, and 2-methylvaleraldehyde exhibited the strongest antifungal effects on V. pyri, with respective EC50 values of 0.30, 6.65, and 74.07 μL L−1”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
Claim · model-written summary
Hexanoic acid inhibited V. pyri with EC50 6.65 μL L−1.
- Taxon
- pearPyrus communist0
- Treatment
- hexanoic acide0
- Interactor
- V. pyrie0pathogen
- Outcome
- antifungal effects on V. pyrie0
- Direction
- strongeste0
- Value
- 6.65e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“iberverin, hexanoic acid, and 2-methylvaleraldehyde exhibited the strongest antifungal effects on V. pyri, with respective EC50 values of 0.30, 6.65, and 74.07 μL L−1”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
Claim · model-written summary
2-methylvaleraldehyde inhibited V. pyri with EC50 74.07 μL L−1.
- Taxon
- pearPyrus communist0
- Treatment
- 2-methylvaleraldehydee0
- Interactor
- V. pyrie0pathogen
- Outcome
- antifungal effects on V. pyrie0
- Direction
- strongeste0
- Value
- 74.07 μL L−1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“iberverin, hexanoic acid, and 2-methylvaleraldehyde exhibited the strongest antifungal effects on V. pyri, with respective EC50 values of 0.30, 6.65, and 74.07 μL L−1”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
Claim · model-written summary
Iberverin fumigation prevented pear Valsa canker on twigs.
- Taxon
- pearPyrus communise0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fumigation treatment of pear twigs with each of these three compounds was also sufficient to prevent the development of pear Valsa canker”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
e1“iberverin, hexanoic acid, and 2-methylvaleraldehyde exhibited the strongest antifungal effects on V. pyri, with respective EC50 values of 0.30, 6.65, and 74.07 μL L−1”
Claim · model-written summary
Hexanoic acid fumigation prevented pear Valsa canker on twigs.
- Taxon
- pearPyrus communise0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fumigation treatment of pear twigs with each of these three compounds was also sufficient to prevent the development of pear Valsa canker”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
e1“iberverin, hexanoic acid, and 2-methylvaleraldehyde exhibited the strongest antifungal effects on V. pyri, with respective EC50 values of 0.30, 6.65, and 74.07 μL L−1”
Claim · model-written summary
2-methylvaleraldehyde fumigation prevented pear Valsa canker on twigs.
- Taxon
- pearPyrus communise0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fumigation treatment of pear twigs with each of these three compounds was also sufficient to prevent the development of pear Valsa canker”
t0“Exploration of the Biocontrol Activity of Bacillus atrophaeus Strain HF1 against Pear Valsa Canker Caused by Valsa pyri”
e1“iberverin, hexanoic acid, and 2-methylvaleraldehyde exhibited the strongest antifungal effects on V. pyri, with respective EC50 values of 0.30, 6.65, and 74.07 μL L−1”
The same questions in other papers
solarization · disease · Pyrus communis (pear)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- 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.