Abstract
A growth chamber experiment was conducted to study the interaction between Meloidogyne javanica and/or M. incognita and the Fusarium wilt fungus Fusarium oxysporum f. sp. melonis, using three muskmelon cultivars differing in their resistance to the fungus. Inoculations were carried out l. with the wilt fungus alone, 14 and 28 days after transplanting; and 2. with the wilt fungus plus one or both root-knot nematodes, either directly upon transplanting, or 14 or 28 days after transplanting. In the course of the test all muskmelon cultivars, irrespective of their initial resistance to the wilt, almost completely lost their resistance when infected with M. javanica; resistance was also impaired but to a lesser extent with M. incognita. Wilting of 100% in the resistant and moderately resistant muskmelon cultivars inoculated with M. javanica + F. oxysporum f. sp melonis occurred 14 days earlier than in muskmelon inoculated with the fungus alone. Also, M. javanica was more severe on the plants than M. incognita. In all three cultivars, both root-knot nematode species hastened expression of plant wilting, which took 12.1 days with M. javanica, 14.8 days with M. incognita, and 12.3 days with both species combined, compared with 22.7 days for plants inoculated with Fusarium oxysporum f. sp. melonis alone. Moreover, the onset of wilting required 9–13.3 days when the nematode infection preceded F. oxysporum f. sp. melonis inoculation by two weeks, compared with 16.7– 19.7 days when the nematode and fungus were inoculated simultaneously 14 days after transplanting, indicating plant preconditioning by the nematode.
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Claims 8
Claim · model-written summary
M. javanica infection nearly abolished Fusarium wilt resistance across muskmelon cultivars.
- Taxon
- muskmelon
.jpg?width=60)
Cucumis meloe0 - Treatment
- infected with M. javanicae0
- Interactor
- M. javanicaMeloidogyne javanicae0pathogen
- Outcome
- resistance to the wilte0
- Direction
- almost completely loste0
- Comparator
- initial resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“all muskmelon cultivars, irrespective of their initial resistance to the wilt, almost completely lost their resistance when infected with M. javanica”
Claim · model-written summary
M. incognita also impaired wilt resistance, but less than M. javanica.
- Treatment
- M. incognitae0
- Interactor
- M. incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae0pathogen - Outcome
- resistancee0
- Direction
- impairede0
Not reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“resistance was also impaired but to a lesser extent with M. incognita.”
Claim · model-written summary
M. javanica plus Fusarium caused complete wilting 14 days earlier than Fusarium alone in resistant and moderately resistant muskmelon.
- Taxon
- muskmelonCucumis meloe0
- Material
- resistant and moderately resistant muskmelon cultivarse0
- Treatment
- inoculated with M. javanica + F. oxysporum f. sp melonise0
- Interactor
- F. oxysporum f. sp melonis
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=60)
Fusarium oxysporume0pathogen - Second interactor
- M. javanicaMeloidogyne javanicae0pathogen
- Outcome
- Wiltinge0
- Direction
- earliere0
- Value
- 14 dayse0
- Qualifier
- 100%e0
- Comparator
- fungus alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=500)
Verbatim
e0“Wilting of 100% in the resistant and moderately resistant muskmelon cultivars inoculated with M. javanica + F. oxysporum f. sp melonis occurred 14 days earlier than in muskmelon inoculated with the fungus alone.”
Claim · model-written summary
M. javanica was more severe on plants than M. incognita.
- Taxon
- plantsViridiplantaee0
- Interactor
- M. javanicaMeloidogyne javanicae0pathogen
- Second interactor
- M. incognitaMeloidogyne incognitae0pathogen
- Outcome
- more severee0
- Direction
- more severee0
- Comparator
- M. incognitae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. javanica was more severe on the plants than M. incognita.”
Claim · model-written summary
With M. javanica, wilting began after 12.1 days versus 22.7 days with Fusarium alone.
- Taxon
- plantsViridiplantaee0
- Treatment
- M. javanicae0
- Interactor
- Fusarium oxysporum f. sp. melonis
Fusarium oxysporum f. sp. melonise0pathogen - Second interactor
- M. javanicaMeloidogyne javanicae0pathogen
- Outcome
- plant wiltinge0
- Value
- 12.1 dayse0
- Qualifier
- 22.7 dayse0
- Comparator
- Fusarium oxysporum f. sp. melonis alonee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant wilting, which took 12.1 days with M. javanica, 14.8 days with M. incognita, and 12.3 days with both species combined, compared with 22.7 days for plants inoculated with Fusarium oxysporum f. sp. melonis alone.”
Claim · model-written summary
With M. incognita, wilting began after 14.8 days versus 22.7 days with Fusarium alone.
- Taxon
- plantsViridiplantaee0
- Treatment
- M. incognitae0
- Interactor
- Fusarium oxysporum f. sp. melonisFusarium oxysporum f. sp. melonise0pathogen
- Second interactor
- M. incognitaMeloidogyne incognitae0pathogen
- Outcome
- plant wiltinge0
- Value
- 14.8 dayse0
- Qualifier
- 22.7 dayse0
- Comparator
- Fusarium oxysporum f. sp. melonis alonee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant wilting, which took 12.1 days with M. javanica, 14.8 days with M. incognita, and 12.3 days with both species combined, compared with 22.7 days for plants inoculated with Fusarium oxysporum f. sp. melonis alone.”
Claim · model-written summary
With both nematodes, wilting began after 12.3 days versus 22.7 days with Fusarium alone.
- Taxon
- plantsViridiplantaee0
- Treatment
- both species combinede0
- Interactor
- Fusarium oxysporum f. sp. melonisFusarium oxysporum f. sp. melonise0pathogen
- Outcome
- plant wiltinge0
- Value
- 12.3 dayse0
- Qualifier
- 22.7 dayse0
- Comparator
- Fusarium oxysporum f. sp. melonis alonee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant wilting, which took 12.1 days with M. javanica, 14.8 days with M. incognita, and 12.3 days with both species combined, compared with 22.7 days for plants inoculated with Fusarium oxysporum f. sp. melonis alone.”
Claim · model-written summary
Nematode infection two weeks before Fusarium inoculation led to wilting in 9–13.3 days, sooner than simultaneous inoculation at 16.7–19.7 days.
- Treatment
- nematode infection preceded F. oxysporum f. sp. melonis inoculation by two weekse0
- Interactor
- F. oxysporum f. sp. melonisFusarium oxysporum f. sp. melonise0pathogen
- Outcome
- onset of wiltinge0
- Value
- 9–13.3 dayse0
- Qualifier
- 16.7– 19.7 dayse0
- Comparator
- nematode and fungus were inoculated simultaneouslye0
Not reportedTaxonDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the onset of wilting required 9–13.3 days when the nematode infection preceded F. oxysporum f. sp. melonis inoculation by two weeks, compared with 16.7– 19.7 days when the nematode and fungus were inoculated simultaneously 14 days after transplanting”
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See all 6 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.