Abstract
In search of an effective biological control agent against the tomato pathogen Fusarium oxysporum f. sp. lycopersici, rhizospheric soil samples were collected from eight agro-ecological zones of Bangladesh. Among the bacteria isolated from soil, 24 isolates were randomly selected and evaluated for their antagonistic activity against F. oxysporum f. sp. lycopersici. The two promising antagonistic isolates were identified as Brevundimonas olei and Bacillus methylotrophicus based on morphological, biochemical and molecular characteristics. These two isolates were evaluated for their biocontrol activity and growth promotion of two tomato cultivars (cv. Pusa Rubi and Ratan) for two consecutive years. Treatment of Pusa Rubi and Ratan seeds with B. olei prior to inoculation of pathogen caused 44.99% and 41.91% disease inhibition respectively compared to the untreated but pathogen-inoculated control plants. However, treatment of Pusa Rubi and Ratan seeds with B. methylotrophicus caused 24.99% and 39.20% disease inhibition respectively. Furthermore, both the isolates enhanced the growth of tomato plants. The study re-vealed that these indigenous bacterial isolates can be used as an effective biocontrol agent against Fusarium wilt of tomato.
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Claims 7
Claim · model-written summary
The two promising antagonists were identified as Brevundimonas olei and Bacillus methylotrophicus.
- Taxon
- Tomato
Solanum lycopersicumt0 - Interactor
- Brevundimonas oleiBrevundimonas oleie0biocontrol_agent
- Outcome
- antagonistic isolates were identified as Brevundimonas olei and Bacillus methylotrophicuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two promising antagonistic isolates were identified as Brevundimonas olei and Bacillus methylotrophicus”
t0“Tomato”
Claim · model-written summary
B. olei inhibited disease by 44.99% in Pusa Rubi.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- Pusa Rubie0
- Treatment
- Treatment of Pusa Rubi and Ratan seeds with B. oleie0
- Interactor
- Fusarium oxysporum f. sp. lycopersici
Fusarium oxysporum f. sp. lycopersicie1pathogen - Second interactor
- B. oleiBrevundimonas oleie0biocontrol_agent
- Outcome
- disease inhibitione0
- Direction
- inhibitione0
- Value
- 44.99%e0
- Comparator
- untreated but pathogen-inoculated control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of Pusa Rubi and Ratan seeds with B. olei prior to inoculation of pathogen caused 44.99% and 41.91% disease inhibition respectively compared to the untreated but pathogen-inoculated control plants”
e1“tomato pathogen Fusarium oxysporum f. sp. lycopersici”
Claim · model-written summary
B. olei inhibited disease by 41.91% in Ratan.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- Ratane0
- Treatment
- Treatment of Pusa Rubi and Ratan seeds with B. oleie0
- Interactor
- Fusarium oxysporum f. sp. lycopersiciFusarium oxysporum f. sp. lycopersicie1pathogen
- Second interactor
- B. oleiBrevundimonas oleie0biocontrol_agent
- Outcome
- disease inhibitione0
- Direction
- inhibitione0
- Value
- 41.91%e0
- Comparator
- untreated but pathogen-inoculated control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of Pusa Rubi and Ratan seeds with B. olei prior to inoculation of pathogen caused 44.99% and 41.91% disease inhibition respectively compared to the untreated but pathogen-inoculated control plants”
e1“tomato pathogen Fusarium oxysporum f. sp. lycopersici”
Claim · model-written summary
B. methylotrophicus inhibited disease by 24.99% in Pusa Rubi.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- Pusa Rubie0
- Treatment
- treatment of Pusa Rubi and Ratan seeds with B. methylotrophicuse0
- Interactor
- Fusarium oxysporum f. sp. lycopersiciFusarium oxysporum f. sp. lycopersicie1pathogen
- Second interactor
- B. methylotrophicus
Bacillus velezensise0biocontrol_agent - Outcome
- disease inhibitione0
- Direction
- inhibitione0
- Value
- 24.99%e0
- Comparator
- untreated but pathogen-inoculated control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment of Pusa Rubi and Ratan seeds with B. methylotrophicus caused 24.99% and 39.20% disease inhibition respectively”
e1“tomato pathogen Fusarium oxysporum f. sp. lycopersici”
e2“untreated but pathogen-inoculated control plants”
Claim · model-written summary
B. methylotrophicus inhibited disease by 39.20% in Ratan.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- Ratane0
- Treatment
- treatment of Pusa Rubi and Ratan seeds with B. methylotrophicuse0
- Interactor
- Fusarium oxysporum f. sp. lycopersiciFusarium oxysporum f. sp. lycopersicie1pathogen
- Second interactor
- B. methylotrophicusBacillus velezensise0biocontrol_agent
- Outcome
- disease inhibitione0
- Direction
- inhibitione0
- Value
- 39.20%e0
- Comparator
- untreated but pathogen-inoculated control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment of Pusa Rubi and Ratan seeds with B. methylotrophicus caused 24.99% and 39.20% disease inhibition respectively”
e1“tomato pathogen Fusarium oxysporum f. sp. lycopersici”
e2“untreated but pathogen-inoculated control plants”
Claim · model-written summary
Both bacterial isolates enhanced tomato growth.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- both the isolatese0
- Interactor
- Brevundimonas oleiBrevundimonas oleie1biocontrol_agent
- Second interactor
- Bacillus methylotrophicusBacillus velezensise1biocontrol_agent
- Outcome
- growth of tomato plantse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the isolates enhanced the growth of tomato plants”
e1“The two promising antagonistic isolates were identified as Brevundimonas olei and Bacillus methylotrophicus”
Claim · model-written summary
The isolates can serve as biocontrol agents against tomato Fusarium wilt.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- can be used as an effective biocontrol agent against Fusarium wilte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these indigenous bacterial isolates can be used as an effective biocontrol agent against Fusarium wilt of tomato”
The same questions in other papers
Bacillus velezensis · Fusarium oxysporum f. sp. lycopersici · Solanum lycopersicum (tomato)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.