Abstract
The effects of brown planthopper on the activities of some key enzymes involved in defense response and the H(2)O(2) content were investigated in rice. From the fact that after piercing-sucking of brown planthopper, malondialdehyde (MDA) content of rice plant was increased rapidly (Fig.3), one can conclude that it induced lipid peroxidation; lipoxygenase (LOX), hydroperoxide lyase (HPL) and phenylalanine ammonia-lyase (PAL) activities were increased significantly in plants of resistant and susceptible varieties by piercing-sucking of brown planthopper (Figs.1,2,4); whereas the catalase activity and the H(2)O(2) content were significantly different between resistant and susceptible plants by piercing-sucking of brown planthopper, the former being decreased and the latter increased in resistance plants of variety RH (Oryza sativa L. cv. Rathu Heenati), while the reverse was true in the susceptible plants of variety TN1 (Oryza sotiva L. cv. Taichung Native 1) (Figs.5,6). The effect of brown planthopper on the PAL activity and the H(2)O(2) content were systemic (Figs.4,6), but the effect on the LOX activity occurred only in stem, the organ which brown planthopper sucking (Fig.1).
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Claims 11
Claim · model-written summary
Brown planthopper feeding rapidly increased rice malondialdehyde content.
- Taxon
- rice
Oryza sativae0 - Treatment
- piercing-sucking of brown planthoppere0
- Interactor
- brown planthopper
Nilaparvata lugense0pest - Outcome
- malondialdehyde (MDA) contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after piercing-sucking of brown planthopper, malondialdehyde (MDA) content of rice plant was increased rapidly”
Claim · model-written summary
The authors infer brown planthopper feeding induced lipid peroxidation.
- Taxon
- riceOryza sativat1
- Outcome
- lipid peroxidatione0
- Qualifier
- inducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one can conclude that it induced lipid peroxidation”
t1“rice”
Claim · model-written summary
Brown planthopper feeding significantly increased LOX activity in resistant and susceptible plants.
- Taxon
- riceOryza sativat1
- Treatment
- piercing-sucking of brown planthoppere0
- Interactor
- brown planthopperNilaparvata lugense0pest
- Outcome
- lipoxygenase (LOX)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lipoxygenase (LOX), hydroperoxide lyase (HPL) and phenylalanine ammonia-lyase (PAL) activities were increased significantly in plants of resistant and susceptible varieties by piercing-sucking of brown planthopper”
t1“rice”
Claim · model-written summary
Brown planthopper feeding significantly increased HPL activity in resistant and susceptible plants.
- Taxon
- riceOryza sativat1
- Treatment
- piercing-sucking of brown planthoppere0
- Interactor
- brown planthopperNilaparvata lugense0pest
- Outcome
- hydroperoxide lyase (HPL)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lipoxygenase (LOX), hydroperoxide lyase (HPL) and phenylalanine ammonia-lyase (PAL) activities were increased significantly in plants of resistant and susceptible varieties by piercing-sucking of brown planthopper”
t1“rice”
Claim · model-written summary
Brown planthopper feeding significantly increased PAL activity in resistant and susceptible plants.
- Taxon
- riceOryza sativat1
- Treatment
- piercing-sucking of brown planthoppere0
- Interactor
- brown planthopperNilaparvata lugense0pest
- Outcome
- phenylalanine ammonia-lyase (PAL)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lipoxygenase (LOX), hydroperoxide lyase (HPL) and phenylalanine ammonia-lyase (PAL) activities were increased significantly in plants of resistant and susceptible varieties by piercing-sucking of brown planthopper”
t1“rice”
Claim · model-written summary
Catalase activity decreased in resistant RH rice after planthopper feeding.
- Taxon
- Oryza sativa L.Oryza sativae0
- Material
- RHe0
- Treatment
- piercing-sucking of brown planthoppere0
- Interactor
- brown planthopperNilaparvata lugense0pest
- Outcome
- catalase activitye0
- Direction
- decreasede0
- Comparator
- susceptible plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“catalase activity and the H(2)O(2) content were significantly different between resistant and susceptible plants by piercing-sucking of brown planthopper, the former being decreased and the latter increased in resistance plants of variety RH (Oryza sativa L. cv. Rathu Heenati)”
Claim · model-written summary
Hydrogen peroxide content increased in resistant RH rice after planthopper feeding.
- Taxon
- Oryza sativa L.Oryza sativae0
- Material
- RHe0
- Treatment
- piercing-sucking of brown planthoppere0
- Interactor
- brown planthopperNilaparvata lugense0pest
- Outcome
- H(2)O(2) contente0
- Direction
- increasede0
- Comparator
- susceptible plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“catalase activity and the H(2)O(2) content were significantly different between resistant and susceptible plants by piercing-sucking of brown planthopper, the former being decreased and the latter increased in resistance plants of variety RH (Oryza sativa L. cv. Rathu Heenati)”
Claim · model-written summary
Catalase activity increased in susceptible TN1 rice, reversing the RH response.
- Taxon
- Oryza sotiva L.e0
- Material
- TN1e0
- Treatment
- piercing-sucking of brown planthoppere1
- Interactor
- brown planthopperNilaparvata lugense1peste0
- Outcome
- catalase activitye1
- Comparator
- resistance plantse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reverse was true in the susceptible plants of variety TN1 (Oryza sotiva L. cv. Taichung Native 1)”
e1“catalase activity and the H(2)O(2) content were significantly different between resistant and susceptible plants by piercing-sucking of brown planthopper, the former being decreased and the latter increased in resistance plants of variety RH (Oryza sativa L. cv. Rathu Heenati)”
Claim · model-written summary
Hydrogen peroxide content decreased in susceptible TN1 rice, reversing the RH response.
- Taxon
- Oryza sotiva L.e0
- Material
- TN1e0
- Treatment
- piercing-sucking of brown planthoppere1
- Interactor
- brown planthopperNilaparvata lugense1peste0
- Outcome
- H(2)O(2) contente1
- Comparator
- resistance plantse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reverse was true in the susceptible plants of variety TN1 (Oryza sotiva L. cv. Taichung Native 1)”
e1“catalase activity and the H(2)O(2) content were significantly different between resistant and susceptible plants by piercing-sucking of brown planthopper, the former being decreased and the latter increased in resistance plants of variety RH (Oryza sativa L. cv. Rathu Heenati)”
Claim · model-written summary
Planthopper effects on PAL activity and hydrogen peroxide content were systemic.
- Taxon
- riceOryza sativat1
- Interactor
- brown planthopperNilaparvata lugense0pest
- Outcome
- PAL activity and the H(2)O(2) contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect of brown planthopper on the PAL activity and the H(2)O(2) content were systemic”
t1“rice”
Claim · model-written summary
The planthopper effect on LOX activity occurred only in the stem.
- Taxon
- riceOryza sativat1
- Organ / stage
- steme0
- Interactor
- brown planthopperNilaparvata lugense0pest
- Outcome
- LOX activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect on the LOX activity occurred only in stem, the organ which brown planthopper sucking”
t1“rice”
The same questions in other papers
Nilaparvata lugens · physiology: oxidative · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- 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.