Abstract
The impact of VA-mycorrhizal fungi and root-knot nematodes, on tobacco (Nicotiana tabacum L.) plants, and the possibility of reducing the harmful effects of root-knot nematodes using VAM fungi, was carried out in pot experiments. The VAM fungus, Glomus intraradices significantly increased cured leaf, shoot and root dry weights and phosphorus (P) content of tobacco plants infected or un-infected with nematodes, whereas Meloidogyne incognita significantly reduced them, in sterilized and unsterilized natural soil. Number of galls (nematode infection) on infected roots, significantly increased with an increase in nematode inoculum density and significantly reduced by G. intraradices whereas, mycorrhizal infection percentage was not significantly affected by M. Incognita. Mycorrhizal infection percentage and number of galls were not affected by soil texture, however, better growth of mycorrhizal plants was observed in silt than in clay soils. The results indicated that the use of G. intraradices is a promising technique for agricultural production and could be used as a biofertilizer and biocontrol agent against root-knot nematodes.
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Claims 9
Claim · model-written summary
Glomus intraradices significantly increased tobacco cured leaf, shoot and root dry weights.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- Glomus intraradicese0
- Interactor
- Glomus intraradicesRhizophagus intraradicese0symbiont
- Outcome
- cured leaf, shoot and root dry weightse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The VAM fungus, Glomus intraradices significantly increased cured leaf, shoot and root dry weights and phosphorus (P) content of tobacco plants infected or un-infected with nematodes”
Claim · model-written summary
Glomus intraradices significantly increased tobacco phosphorus content.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- Glomus intraradicese0
- Interactor
- Glomus intraradicesRhizophagus intraradicese0symbiont
- Outcome
- phosphorus (P) contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glomus intraradices significantly increased cured leaf, shoot and root dry weights and phosphorus (P) content of tobacco plants infected or un-infected with nematodes”
Claim · model-written summary
Meloidogyne incognita significantly reduced tobacco dry weights and phosphorus content.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- Meloidogyne incognitae0
- Interactor
- Meloidogyne incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae0pathogen - Outcome
- dry weights and phosphorus (P) contente1
- Direction
- reducede0
- Setting
- sterilized and unsterilized natural soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“Meloidogyne incognita significantly reduced them, in sterilized and unsterilized natural soil”
t0“Tobacco Plants”
t1“Tobacco Plants”
e1“The VAM fungus, Glomus intraradices significantly increased cured leaf, shoot and root dry weights and phosphorus (P) content of tobacco plants infected or un-infected with nematodes”
Claim · model-written summary
Root gall number significantly increased with nematode inoculum density.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- nematode inoculum densitye0
- Outcome
- Number of galls (nematode infection)e0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of galls (nematode infection) on infected roots, significantly increased with an increase in nematode inoculum density”
t0“Tobacco Plants”
t1“Tobacco Plants”
Claim · model-written summary
Glomus intraradices significantly reduced nematode root galls.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- G. intraradicese0
- Second interactor
- G. intraradicesRhizophagus intraradicese0biocontrol_agent
- Outcome
- Number of galls (nematode infection)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of galls (nematode infection) on infected roots, significantly increased with an increase in nematode inoculum density and significantly reduced by G. intraradices”
t0“Tobacco Plants”
t1“Tobacco Plants”
Claim · model-written summary
M. Incognita did not significantly affect mycorrhizal infection percentage.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- M. Incognitae0
- Interactor
- M. Incognitae0pathogen
- Outcome
- mycorrhizal infection percentagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mycorrhizal infection percentage was not significantly affected by M. Incognita”
t0“Tobacco Plants”
t1“Tobacco Plants”
Claim · model-written summary
Soil texture did not affect mycorrhizal infection percentage or gall number.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- soil texturee0
- Interactor
- gallse0pathogen
- Outcome
- Mycorrhizal infection percentage and number of gallse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mycorrhizal infection percentage and number of galls were not affected by soil texture”
t0“Tobacco Plants”
t1“Tobacco Plants”
Claim · model-written summary
Mycorrhizal tobacco grew better in silt than clay soil.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- silte0
- Outcome
- growthe0
- Direction
- bettere0
- Qualifier
- mycorrhizal plantse0
- Comparator
- clay soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“better growth of mycorrhizal plants was observed in silt than in clay soils”
t0“Tobacco Plants”
t1“Tobacco Plants”
Claim · model-written summary
The authors recommend G. intraradices as a biofertilizer and biocontrol agent against root-knot nematodes.
- Taxon
- tobaccoNicotiana tabacumt0
- Interactor
- root-knot nematodesMeloidogynee0pathogen
- Second interactor
- G. intraradicesRhizophagus intraradicese0biocontrol_agent
- Outcome
- biofertilizer and biocontrol agent against root-knot nematodese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of G. intraradices is a promising technique for agricultural production and could be used as a biofertilizer and biocontrol agent against root-knot nematodes”
t0“Tobacco Plants”
t1“Tobacco Plants”
The same questions in other papers
Meloidogyne incognita · growth · Nicotiana tabacum (tobacco)Results agree
1 paper in the same direction as this paper
- negative
Rhizophagus intraradices · growth · Nicotiana tabacum (tobacco)Results agree
1 paper in the same direction as this paper
- positive
soil · disease · Nicotiana tabacum (tobacco)Positive and negative results
1 in the opposite direction
- 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.