Abstract
Endophytic bacteria could be used as a tool to promote plant growth, enhance abiotic stress tolerance, and inhibit plant pathogen growth. More than 100 bacteria, previously tested to have biocontrol activity against fungal pathogens from our lab, were chosen for pathogen inhibition in vitro with antibiosis assays against strawberry specific pathogens. Three potential endophytic bacteria were tested in the greenhouse for disease reduction and growth performance. Finally, field trials were conducted for fruit yield production. Our results showed that three endophytic bacteria significantly inhibited the growth of the strawberry pathogen Colletotrichum gloeosporioides from antibiosis assays and were identified as Bacillus velezensis strains IALR308, IALR585, and IALR619. Inoculation of these bacteria significantly reduced strawberry disease in greenhouse conditions with pathogen infection. Field trials showed that IALR619 has potential to influence marketable fruit yield when strawberry plants were inoculated twice over the growing season. All three bacteria had the ability to produce auxin and to solubilize phosphate. The antibiotics surfactin and iturin were also detected in IALR585 and IALR619. In conclusion, Bacillus velezensis IALR619 has potential inhibition of strawberry pathogen growth in the greenhouse and possible ability to increase marketable fruit yield in the field.
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Claims 5
Claim · model-written summary
Three endophytic bacteria, identified as Bacillus velezensis IALR308, IALR585 and IALR619, significantly inhibited growth of the strawberry pathogen Colletotrichum gloeosporioides in antibiosis assays.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassae0 - Treatment
- three endophytic bacteriae0
- Interactor
- Colletotrichum gloeosporioides
Colletotrichum gloeosporioidese0pathogen - Second interactor
- Bacillus velezensis strains IALR308, IALR585, and IALR619
Bacillus velezensise0biocontrol_agent - Outcome
- growth of the strawberry pathogen Colletotrichum gloeosporioidese0
- Direction
- inhibitede0
- Setting
- antibiosis assayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“three endophytic bacteria significantly inhibited the growth of the strawberry pathogen Colletotrichum gloeosporioides from antibiosis assays and were identified as Bacillus velezensis strains IALR308, IALR585, and IALR619”
Claim · model-written summary
Inoculation of the bacteria significantly reduced strawberry disease in the greenhouse with pathogen infection.
- Taxon
- strawberryFragaria ×ananassae1
- Treatment
- Inoculation of these bacteriae1
- Outcome
- strawberry diseasee1
- Direction
- reducede1
- Setting
- greenhouse conditionse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Inoculation of these bacteria significantly reduced strawberry disease in greenhouse conditions with pathogen infection”
Claim · model-written summary
In field trials IALR619 had potential to influence marketable fruit yield when strawberry plants were inoculated twice over the growing season.
- Taxon
- strawberryFragaria ×ananassae2
- Treatment
- inoculated twice over the growing seasone2
- Interactor
- IALR619e2symbiont
- Outcome
- marketable fruit yielde2
- Setting
- Field trialse2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Field trials showed that IALR619 has potential to influence marketable fruit yield when strawberry plants were inoculated twice over the growing season”
Claim · model-written summary
All three bacteria had the ability to produce auxin and to solubilize phosphate.
- Outcome
- ability to produce auxin and to solubilize phosphatee3
Verbatim
e3“All three bacteria had the ability to produce auxin and to solubilize phosphate”
Claim · model-written summary
The antibiotics surfactin and iturin were detected in IALR585 and IALR619.
Not reportedTaxon
Verbatim
e4“The antibiotics surfactin and iturin were also detected in IALR585 and IALR619”
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