Abstract
Aflatoxin contamination resulting from maize infection by Aspergillus flavus is both an economic and a public health concern. Therefore, strategies for controlling aflatoxin contamination in maize are being investigated. The abilities of eleven naturally occurring atoxigenic isolates in Nigeria to reduce aflatoxin contamination in maize were evaluated in grain competition experiments and in field studies during the 2005 and 2006 growing seasons. Treatments consisted of inoculation of either grains in vials or ears at mid-silking stage in field plots, with the toxigenic isolate (La3228) or atoxigenic isolate alone and co-inoculation of each atoxigenic isolate and La3328. Aflatoxin B(1) + B(2) concentrations were significantly (p < 0.05) lower in the co-inoculation treatments compared with the treatment in which the aflatoxin-producing isolate La3228 was inoculated alone. Relative levels of aflatoxin B(1) + B(2) reduction ranged from 70.1% to 99.9%. Among the atoxigenics, two isolates from Lafia, La3279 and La3303, were most effective at reducing aflatoxin B(1) + B(2) concentrations in both laboratory and field trials. These two isolates have potential value as agents for the biocontrol of aflatoxin contamination in maize. Because these isolates are endemic to West Africa, they are both more likely than introduced isolates to be well adapted to West African environments and to meet regulatory concerns over their use throughout that region.
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Claims 4
Claim · model-written summary
Co-inoculation with atoxigenic isolates lowered maize aflatoxin B(1) + B(2) concentrations relative to the toxigenic isolate alone, by 70.1% to 99.9%.
- Treatment
- co-inoculation treatmentse0
- Interactor
- aflatoxin-producing isolate La3228e0pathogen
- Outcome
- Aflatoxin B(1) + B(2) concentrationse0
- Direction
- lowere0
- Value
- 70.1% to 99.9%e0
- Comparator
- the aflatoxin-producing isolate La3228 was inoculated alonee0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aflatoxin B(1) + B(2) concentrations were significantly (p < 0.05) lower in the co-inoculation treatments compared with the treatment in which the aflatoxin-producing isolate La3228 was inoculated alone. Relative levels of aflatoxin B(1) + B(2) reduction ranged from 70.1% to 99.9%.”
t0“maize”
Claim · model-written summary
Isolate La3279 was among the most effective at reducing aflatoxin in laboratory and field trials.
- Treatment
- La3279e0
- Interactor
- La3279e0biocontrol_agent
- Outcome
- aflatoxin B(1) + B(2) concentrationse0
- Direction
- reducinge0
- Setting
- laboratory and field trialse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the atoxigenics, two isolates from Lafia, La3279 and La3303, were most effective at reducing aflatoxin B(1) + B(2) concentrations in both laboratory and field trials.”
t0“maize”
Claim · model-written summary
Isolate La3303 was among the most effective at reducing aflatoxin in laboratory and field trials.
- Treatment
- La3303e0
- Interactor
- La3303e0biocontrol_agent
- Outcome
- aflatoxin B(1) + B(2) concentrationse0
- Direction
- reducinge0
- Setting
- laboratory and field trialse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the atoxigenics, two isolates from Lafia, La3279 and La3303, were most effective at reducing aflatoxin B(1) + B(2) concentrations in both laboratory and field trials.”
t0“maize”
Claim · model-written summary
The authors consider La3279 and La3303 potential agents for aflatoxin biocontrol in maize.
- Outcome
- biocontrol of aflatoxin contamination in maizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These two isolates have potential value as agents for the biocontrol of aflatoxin contamination in maize.”
The same questions in other papers
inoculation · disease · Zea mays (maize)Positive and negative results
92 papers in the same direction as this paper · 66 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- no effect
156 papers more in this group
See all 160 papers →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.