Abstract
A series of controlled-environment experiments were conducted to elucidate the effects of Meloidogyne incognita on host physiology and plant-water relations of two cotton (Gossypium hirsutum) cultivars that differed in their susceptibility to nematode infection. Inoculation of M. incognita-resistant cultivar Auburn 634 did not affect growth, stomatal resistance, or components of plant-water potential relative to uninoculated controls. However, nematode infection of the susceptible cultivar Stoneville 506 greatly suppressed water flow through intact roots. This inhibition exceeded 28% on a root-length basis and was similar to that observed as a consequence of severe water stress in a high evaporative demand environment. Nematodes did not affect the components of leaf water potential, stomatal resistance, transpiration, or leaf temperature. However, these factors were affected by the interaction of M. incognita and water stress. Our results indicate that M. incognita infection may alter host-plant water balance and may be a significant factor in early-season stress on cotton seedlings.
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Claims 6
Claim · model-written summary
Inoculation of the resistant cotton cultivar Auburn 634 with M. incognita did not affect growth, stomatal resistance or components of plant-water potential.
- Taxon
- Gossypium hirsutum
Gossypium hirsutume0 - Material
- Auburn 634e1
- Treatment
- Inoculatione1
- Interactor
- M. incognita
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Meloidogyne incognitae1pathogen - Outcome
- growth, stomatal resistance, or components of plant-water potentiale1
- Direction
- did not affecte1
- Comparator
- uninoculated controlse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“effects of Meloidogyne incognita on host physiology and plant-water relations of two cotton (Gossypium hirsutum) cultivars”
e1“Inoculation of M. incognita-resistant cultivar Auburn 634 did not affect growth, stomatal resistance, or components of plant-water potential relative to uninoculated controls”
Claim · model-written summary
Nematode infection of the susceptible cotton cultivar Stoneville 506 greatly suppressed water flow through intact roots, by more than 28% on a root-length basis.
- Taxon
- Gossypium hirsutumGossypium hirsutume0
- Material
- Stoneville 506e2
- Treatment
- nematode infectione2
- Interactor
- Meloidogyne incognitaMeloidogyne incognitae0pathogen
- Outcome
- water flow through intact rootse2
- Direction
- greatly suppressede2
- Value
- 28%e3
- Qualifier
- on a root-length basise3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effects of Meloidogyne incognita on host physiology and plant-water relations of two cotton (Gossypium hirsutum) cultivars”
e2“nematode infection of the susceptible cultivar Stoneville 506 greatly suppressed water flow through intact roots”
e3“This inhibition exceeded 28% on a root-length basis”
Claim · model-written summary
Nematodes did not affect components of leaf water potential, stomatal resistance or transpiration in cotton.
- Taxon
- Gossypium hirsutumGossypium hirsutume0
- Treatment
- Nematodese4
- Outcome
- components of leaf water potential, stomatal resistance, transpiratione4
- Direction
- did not affecte4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effects of Meloidogyne incognita on host physiology and plant-water relations of two cotton (Gossypium hirsutum) cultivars”
e4“Nematodes did not affect the components of leaf water potential, stomatal resistance, transpiration, or leaf temperature”
Claim · model-written summary
Nematodes did not affect leaf temperature in cotton.
- Taxon
- Gossypium hirsutumGossypium hirsutume0
- Treatment
- Nematodese4
- Outcome
- leaf temperaturee4
- Direction
- did not affecte4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effects of Meloidogyne incognita on host physiology and plant-water relations of two cotton (Gossypium hirsutum) cultivars”
e4“Nematodes did not affect the components of leaf water potential, stomatal resistance, transpiration, or leaf temperature”
Claim · model-written summary
The interaction of M. incognita and water stress affected leaf water potential, stomatal resistance, transpiration and leaf temperature.
- Taxon
- Gossypium hirsutumGossypium hirsutume0
- Treatment
- water stresse5
- Interactor
- M. incognitaMeloidogyne incognitae5pathogen
- Outcome
- these factorse5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effects of Meloidogyne incognita on host physiology and plant-water relations of two cotton (Gossypium hirsutum) cultivars”
e5“However, these factors were affected by the interaction of M. incognita and water stress”
Claim · model-written summary
M. incognita infection may alter host-plant water balance and may be a significant factor in early-season stress on cotton seedlings.
- Taxon
- Gossypium hirsutumGossypium hirsutume0
- Interactor
- M. incognitaMeloidogyne incognitae6pathogen
- Outcome
- host-plant water balancee6
- Qualifier
- may be a significant factor in early-season stresse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effects of Meloidogyne incognita on host physiology and plant-water relations of two cotton (Gossypium hirsutum) cultivars”
e6“M. incognita infection may alter host-plant water balance and may be a significant factor in early-season stress on cotton seedlings”
The same questions in other papers
inoculation · Meloidogyne incognita · Gossypium hirsutum (cotton)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
infection · Meloidogyne incognita · Gossypium hirsutum (cotton)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- negative
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.