Abstract
Summary Tomato plants (Lycopersicon esculentum L. cv. Momotaro T96) grown with organic fertilizer possessed higher resistance against phytophthora infection (Phytophthora infestans) in comparison with plants given chemical fertilization. However, the photosynthetic activity was not low in leaves of chemically-fertilized plants before phytoph-thora infection. There were no differences in leaf proteins between the two fertilization treatments, as revealed by electrophoresis. This suggested that high phytophthora infection was not related to physiological activity as indicated by photosynthetic rate and protein profile. Concentrations of leaf nitrogenous compounds, nitrate and amino acids were higher in chemically-fertilized plants. Nitrate concentration in the soil was also higher in chemical plots. On the other hand, leaf nitrate reductase activity and soil hydrogenase activity were lower in chemical plots. The integrated results suggested that nitrogen metabolism in organically-fertilized tomato plants accounted for high phytophthora resistance. Therefore, organic farming can efficiently control this disease in tomato plants. Key Words: Nature farmingorganic fertilizerchemical fertilizernitrogen metabolismphytophthoratomatonitrogen metabolism
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Claims 11
Claim · model-written summary
Organically fertilized tomato plants had higher resistance to Phytophthora infestans infection than chemically fertilized plants.
- Taxon
- Lycopersicon esculentum
Solanum lycopersicume0 - Material
- Momotaro T96e0
- Treatment
- organic fertilizere0
- Interactor
- Phytophthora infestans
Phytophthora infestanse0pathogen - Outcome
- resistance against phytophthora infectione0
- Direction
- highere0
- Comparator
- chemical fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants (Lycopersicon esculentum L. cv. Momotaro T96) grown with organic fertilizer possessed higher resistance against phytophthora infection (Phytophthora infestans) in comparison with plants given chemical fertilization.”
Claim · model-written summary
Photosynthetic activity was not low in chemically fertilized tomato leaves before infection.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- leavese0
- Treatment
- chemically-fertilizede0
- Outcome
- photosynthetic activitye0
- Direction
- not lowe0
- Qualifier
- before phytoph-thora infectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, the photosynthetic activity was not low in leaves of chemically-fertilized plants before phytoph-thora infection.”
t0“Tomato Plants”
Claim · model-written summary
Leaf proteins did not differ between organic and chemical fertilization treatments in tomato.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- organic fertilizere1
- Outcome
- leaf proteinse0
- Direction
- no differencese0
- Comparator
- chemical fertilizatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no differences in leaf proteins between the two fertilization treatments, as revealed by electrophoresis.”
e1“grown with organic fertilizer possessed higher resistance against phytophthora infection (Phytophthora infestans) in comparison with plants given chemical fertilization.”
t0“Tomato Plants”
Claim · model-written summary
The authors inferred that high phytophthora infection was unrelated to physiological activity indicated by photosynthetic rate and protein profile.
- Taxon
- TomatoSolanum lycopersicumt0
- Interactor
- phytophthora
Phytophthorae0pathogen - Outcome
- phytophthora infectione0
- Qualifier
- physiological activity as indicated by photosynthetic rate and protein profilee0
Not reportedTreatmentDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This suggested that high phytophthora infection was not related to physiological activity as indicated by photosynthetic rate and protein profile.”
t0“Tomato Plants”
Claim · model-written summary
Leaf nitrate concentrations were higher in chemically fertilized tomato plants.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- leafe0
- Treatment
- chemically-fertilizede0
- Outcome
- nitratee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of leaf nitrogenous compounds, nitrate and amino acids were higher in chemically-fertilized plants.”
t0“Tomato Plants”
Claim · model-written summary
Leaf amino acid concentrations were higher in chemically fertilized tomato plants.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- leafe0
- Treatment
- chemically-fertilizede0
- Outcome
- amino acidse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of leaf nitrogenous compounds, nitrate and amino acids were higher in chemically-fertilized plants.”
t0“Tomato Plants”
Claim · model-written summary
Soil nitrate concentration was higher in chemical plots.
Not reportedTaxonComparator
Verbatim
e0“Nitrate concentration in the soil was also higher in chemical plots.”
Claim · model-written summary
Leaf nitrate reductase activity was lower in chemical plots.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- chemicale0
- Gene
- nitrate reductasee0
- Outcome
- leaf nitrate reductase activitye0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the other hand, leaf nitrate reductase activity and soil hydrogenase activity were lower in chemical plots.”
t0“Tomato Plants”
Claim · model-written summary
Soil hydrogenase activity was lower in chemical plots.
Not reportedTaxonComparator
Verbatim
e0“On the other hand, leaf nitrate reductase activity and soil hydrogenase activity were lower in chemical plots.”
Claim · model-written summary
The authors inferred that nitrogen metabolism accounted for high phytophthora resistance in organically fertilized tomato plants.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- organically-fertilizede0
- Interactor
- phytophthoraPhytophthorae0pathogen
- Outcome
- phytophthora resistancee0
- Direction
- highe0
- Qualifier
- nitrogen metabolisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The integrated results suggested that nitrogen metabolism in organically-fertilized tomato plants accounted for high phytophthora resistance.”
Claim · model-written summary
The authors conclude that organic farming can efficiently control phytophthora disease in tomato plants.
- Taxon
- tomatoSolanum lycopersicume0
- Interactor
- phytophthoraPhytophthorae1pathogen
- Outcome
- organic farminge0
- Qualifier
- can efficiently control this diseasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Therefore, organic farming can efficiently control this disease in tomato plants.”
e1“high phytophthora resistance”
The same questions in other papers
fertilization · Phytophthora infestans · Solanum lycopersicum (tomato)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
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.