Abstract
Grapevine crown gall, caused by Allorhizobium vitis (A. vitis) and fire blight, caused by Erwinia amylovora (E. amylovora) of rosaceous plants, have been recognized as serious bacterial diseases and responsible for major crop losses in grapevine (Vitis vinifera L.), pear (Pyrus communis L.) and apple (Malus domestica Borkh.) worldwide. To develop an effective biocontrol method against the two bacterial pathogens, lactic acid bacteria (LAB) isolated from agricultural irrigation canals were tested as biocontrol agents. Thirty-two bacterial isolates were screened for their in vitro antagonistic activity. Four isolates (MS-1, MS-2, MS-3, and MS-4), identified by partial sequencing of 16S rRNA as Leuconostoc mesenteroides subsp. Jonggajibkimchii, were found to significantly inhibit the growth of A. vitis and E. amylovora in vitro. The biocontrol efficiency of these strains was tested against E. amylovora on immature pear fruits under laboratory conditions, and against A. vitis in tomato (Solanum lycopersicum L.) and kalanchoe (Kalanchoe daigremontiana) plants, under greenhouse conditions. Results showed that all selected antagonists were able to suppress fire blight disease on immature pear fruits. On tomato plants, the MS-1 and MS-2 strains were able to reduce the A. vitis infection by 82% and 99%, respectively. Similarly, the MS-2 strain reduced gall formation on kalanchoe plants by 99%. We concluded that Leuconostoc mesenteroides subsp. Jonggajibkimchii strains could serve as a potential biocontrol agent against fire blight and grapevine crown gall diseases.
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Claims 6
Claim · model-written summary
Four Leuconostoc isolates significantly inhibited A. vitis in vitro.
- Interactor
- A. vitise0pathogen
- Second interactor
- Leuconostoc mesenteroides subsp. Jonggajibkimchii
Leuconostoc mesenteroides subsp. jonggajibkimchiie0biocontrol_agent - Outcome
- growth of A. vitise0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four isolates (MS-1, MS-2, MS-3, and MS-4), identified by partial sequencing of 16S rRNA as Leuconostoc mesenteroides subsp. Jonggajibkimchii, were found to significantly inhibit the growth of A. vitis and E. amylovora in vitro.”
Claim · model-written summary
Four Leuconostoc isolates significantly inhibited E. amylovora in vitro.
- Interactor
- E. amylovora
Erwinia amylovorae0pathogen - Second interactor
- Leuconostoc mesenteroides subsp. JonggajibkimchiiLeuconostoc mesenteroides subsp. jonggajibkimchiie0biocontrol_agent
- Outcome
- E. amylovorae0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four isolates (MS-1, MS-2, MS-3, and MS-4), identified by partial sequencing of 16S rRNA as Leuconostoc mesenteroides subsp. Jonggajibkimchii, were found to significantly inhibit the growth of A. vitis and E. amylovora in vitro.”
Claim · model-written summary
Selected antagonists suppressed fire blight on immature pear fruits.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communise0 - Organ / stage
- immature pear fruitse0
- Treatment
- all selected antagonistse0
- Outcome
- fire blight diseasee0
- Direction
- suppresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“Results showed that all selected antagonists were able to suppress fire blight disease on immature pear fruits.”
Claim · model-written summary
MS-1 reduced A. vitis infection on tomato plants by 82%.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- MS-1e0
- Interactor
- A. vitise0pathogen
- Outcome
- A. vitis infectione0
- Direction
- reducee0
- Value
- 82%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On tomato plants, the MS-1 and MS-2 strains were able to reduce the A. vitis infection by 82% and 99%, respectively.”
Claim · model-written summary
MS-2 reduced A. vitis infection on tomato plants by 99%.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- MS-2e0
- Interactor
- A. vitise0pathogen
- Outcome
- A. vitis infectione0
- Direction
- reducee0
- Value
- 99%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On tomato plants, the MS-1 and MS-2 strains were able to reduce the A. vitis infection by 82% and 99%, respectively.”
Claim · model-written summary
MS-2 reduced gall formation on kalanchoe plants by 99%.
KalanchoeNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similarly, the MS-2 strain reduced gall formation on kalanchoe plants by 99%.”
The same questions in other papers
biocontrol · disease · Pyrus communis (pear)Results agree
3 papers in the same direction as this paper
- positive
- 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.