Abstract
Resistance genes in response to root-knot nematode (Meloidogyne javanica) infection suppress one or more of several critical steps in nematode parasitism and their reproduction rate. The reaction of seven commercial tomato genotypes to M. javanica infection was investigated under greenhouse conditions. Current results classified these genotypes as: three resistant (Jampakt, Malika and Nema Guard), one moderately resistant (Fayrouz), and three susceptible (Castle Rock, Super Marmande and Super Strain B). Except Nema Guard, nematode infection significantly reduced plant height, fresh and dry weights of shoots of the other tomato genotypes. Leaf area was significantly reduced for all examined tomato genotypes except Malika and Nema Guard. Total chlorophyll was reduced in all tested tomato genotypes except Jampakt. Infection parameters of M. javanica and their population were significantly reduced on all nematode-resistant tomato genotypes compared to the susceptible genotypes. Also, the maturation rate of M. javanica was suppressed in the resistant genotypes compared to the susceptible genotypes. These results were confirmed by histological study that illustrated a delay in nematode development and their maturation. Total phenolic content significantly increased in nematode infected roots of both resistant and susceptible genotypes except Malika. Among non-infected roots, Malika showed the highest level of total phenols while after M. javanica infection, Nema Guard revealed the highest level of total phenols. Among infected roots, the highest level of total phenols was recorded in Castle Rock. These results suggested that using nematode-resistant tomato genotypes could provide an efficient and nonpolluting method to control root-knot nematodes.
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Claims 14
Claim · model-written summary
Jampakt, Malika and Nema Guard were classified as resistant tomato genotypes.
- Taxon
- tomato
Solanum lycopersicumt0 - Material
- Jampakt, Malika and Nema Guarde1
- Outcome
- resistante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e1“three resistant (Jampakt, Malika and Nema Guard)”
Claim · model-written summary
Fayrouz was classified as moderately resistant to Meloidogyne javanica.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Fayrouze1
- Outcome
- moderately resistante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e1“one moderately resistant (Fayrouz)”
Claim · model-written summary
Castle Rock, Super Marmande and Super Strain B were classified as susceptible tomato genotypes.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Castle Rock, Super Marmande and Super Strain Be1
- Outcome
- susceptiblee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e1“three susceptible (Castle Rock, Super Marmande and Super Strain B)”
Claim · model-written summary
Nematode infection significantly reduced plant height and fresh and dry shoot weights in all tomato genotypes except Nema Guard.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- nematode infectione4
- Interactor
- Meloidogyne javanicaMeloidogyne javanicat1pathogen
- Outcome
- plant height, fresh and dry weights of shootse4
- Direction
- reducede4
- Qualifier
- Except Nema Guarde4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
t1“Meloidogyne javanica infection”
e4“Except Nema Guard, nematode infection significantly reduced plant height, fresh and dry weights of shoots of the other tomato genotypes”
Claim · model-written summary
Nematode infection significantly reduced leaf area in all examined tomato genotypes except Malika and Nema Guard.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- nematode infectione4
- Outcome
- Leaf areae5
- Direction
- reducede5
- Qualifier
- except Malika and Nema Guarde5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e4“Except Nema Guard, nematode infection significantly reduced plant height, fresh and dry weights of shoots of the other tomato genotypes”
e5“Leaf area was significantly reduced for all examined tomato genotypes except Malika and Nema Guard”
Claim · model-written summary
Nematode infection significantly reduced total chlorophyll in all tested tomato genotypes except Jampakt.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- nematode infectione4
- Outcome
- Total chlorophylle6
- Direction
- reducede6
- Qualifier
- except Jampakte6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e4“Except Nema Guard, nematode infection significantly reduced plant height, fresh and dry weights of shoots of the other tomato genotypes”
e6“Total chlorophyll was reduced in all tested tomato genotypes except Jampakt”
Claim · model-written summary
Meloidogyne javanica infection parameters and population were significantly lower on nematode-resistant tomato genotypes than on susceptible genotypes.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- nematode-resistant tomato genotypese7
- Interactor
- M. javanicaMeloidogyne javanicae7pathogen
- Outcome
- Infection parameters of M. javanica and their populatione7
- Direction
- reducede7
- Comparator
- the susceptible genotypese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e7“Infection parameters of M. javanica and their population were significantly reduced on all nematode-resistant tomato genotypes compared to the susceptible genotypes”
Claim · model-written summary
The maturation rate of M. javanica was suppressed in resistant genotypes compared with susceptible genotypes.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- resistant genotypese0
- Interactor
- M. javanicaMeloidogyne javanicae0pathogen
- Outcome
- maturation rate of M. javanicae0
- Direction
- suppressede0
- Comparator
- susceptible genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e0“the maturation rate of M. javanica was suppressed in the resistant genotypes compared to the susceptible genotypes”
Claim · model-written summary
Histological study showed a delay in nematode development and maturation.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- nematode development and their maturatione1
- Qualifier
- a delaye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e1“a delay in nematode development and their maturation”
Claim · model-written summary
Total phenolic content increased significantly in nematode-infected roots of both resistant and susceptible genotypes, except Malika.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- nematode infectede2
- Outcome
- Total phenolic contente2
- Direction
- increasede2
- Qualifier
- of both resistant and susceptible genotypes except Malikae2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e2“Total phenolic content significantly increased in nematode infected roots of both resistant and susceptible genotypes except Malika”
Claim · model-written summary
Among non-infected roots, Malika had the highest total phenols.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Malikae3
- Outcome
- total phenolse3
- Direction
- higheste3
- Qualifier
- Among non-infected rootse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e3“Among non-infected roots, Malika showed the highest level of total phenols”
Claim · model-written summary
After M. javanica infection, Nema Guard had the highest total phenols.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Nema Guarde4
- Interactor
- M. javanicaMeloidogyne javanicae4pathogen
- Outcome
- total phenolse4
- Direction
- higheste4
- Qualifier
- after M. javanica infectione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e4“after M. javanica infection, Nema Guard revealed the highest level of total phenols”
Claim · model-written summary
Among infected roots, Castle Rock had the highest total phenols.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Castle Rocke5
- Outcome
- total phenolse5
- Direction
- higheste5
- Qualifier
- Among infected rootse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e5“Among infected roots, the highest level of total phenols was recorded in Castle Rock”
Claim · model-written summary
The authors suggest nematode-resistant tomato genotypes could provide an efficient and nonpolluting method to control root-knot nematodes.
- Taxon
- tomatoSolanum lycopersicumt0
- Interactor
- root-knot nematodes
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogynee6pathogen - Outcome
- method to control root-knot nematodese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
t0“nematode-resistant and susceptible tomato genotypes”
e6“using nematode-resistant tomato genotypes could provide an efficient and nonpolluting method to control root-knot nematodes”
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