Abstract
Disease severity associated with the pathogen Fusarium oxysporum is generally thought to be proportional to the population of fungal propagules in the soil. However, results from studies using naturally infested soil are contradictory, implicating host predisposition to disease. In this study, soil was amended with chicken manure to investigate the interdependence between the activity and invasiveness of the pathogen, and the incidence of Panama disease in susceptible banana plantlets. Two soil types naturally infested with either race 1 or race 4 of the pathogen, and cultivars Lady finger and Grande Naine, were used. Pathogen activity was measured by burying root tip segments for 5 days, then calculating the frequency of isolation of Fusarium from the segments. Pathogen invasion was measured by transplanting banana plantlets into trays of amended and unamended soil for 4 weeks, then calculating the frequency of recovery of Fusarium from each pseudostem. Amending both soil types with chicken manure enhanced both pathogen invasion and disease incidence. However, pathogen activity was not correlated with either parameter. We postulate that the addition of chicken manure is predisposing banana plantlets to Panama disease, by reducing the efficacy of the host wound response.
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Claims 4
Claim · model-written summary
Chicken manure increased Fusarium invasion of banana plantlets.
FusariumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Amending both soil types with chicken manure enhanced both pathogen invasion and disease incidence”
t0“Fusarium oxysporum f. sp. cubense , the cause of Panama disease in bananas”
Claim · model-written summary
Chicken manure increased Panama disease incidence in banana plantlets.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Amending both soil types with chicken manure enhanced both pathogen invasion and disease incidence”
t0“Fusarium oxysporum f. sp. cubense , the cause of Panama disease in bananas”
Claim · model-written summary
Pathogen activity did not correlate with invasion or disease incidence.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pathogen activity was not correlated with either parameter”
t0“Fusarium oxysporum f. sp. cubense , the cause of Panama disease in bananas”
Claim · model-written summary
Authors hypothesize manure predisposes banana plantlets to disease by weakening host wound response.
Verbatim
e0“addition of chicken manure is predisposing banana plantlets to Panama disease, by reducing the efficacy of the host wound response”
The same questions in other papers
fertilization · Fusarium · MusaPositive and negative results
1 paper in the same direction as this paper · 9 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 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.