Abstract
Biochemical basis of nematode disease resistance was studied by analysis of the activity of three enzymes, peroxidase (PO), polyphenol oxidase (PPO), and phenylalanine ammonia lyase (PAL) in the shoot and root tissues of resistant and susceptible genotypes of wheat before and after inoculation with the cereal cyst nematode H. avenae. The biochemical studies were conducted with the parent cultivars/lines, the F1 population, F2, BC1 and test cross populations of the cross Raj 1482 × CCNRV1 (Raj MR1) An elevated level of enzyme activity was observed in all the inoculated plants both in the susceptible and resistant cultivars, though, the resistant cultivars have shown maximum enzyme activity in comparison to the susceptible cultivars. The root tissues had shown increased enzyme activity in comparison to the shoot tissues, irrespective of nematode inoculation. Among the three biochemical enzymes studied, PAL had shown the maximum enzyme activity, in both the shoots and roots irrespective of susceptible and resistant cultivars. Analysis of enzyme activity in the cross between Raj1482 × Raj MR1, depicted that F1 generation had shown tremendous increase in the enzyme activity in all the three enzymes studied, over either of the parents. The F2 population showed lower enzyme activity in comparison to F1 population. The results with BC1 (test cross) and BC1 population were almost at par. In comparison to phenylalanine ammonia lyase (PAL) and peroxidase (PO), Polyphenol-oxidase (PPO) did not reveal a significant difference in the control and inoculated plants irrespective of susceptible and resistant cultivar taken into consideration or the type of tissue (shoot/root) analysed.
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Claims 8
Claim · model-written summary
Nematode inoculation elevated enzyme activity in susceptible and resistant wheat.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- inoculatede0
- Outcome
- enzyme activitye0
- Direction
- elevatede0
- Comparator
- susceptible and resistant cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An elevated level of enzyme activity was observed in all the inoculated plants both in the susceptible and resistant cultivars”
t0“wheat”
Claim · model-written summary
Resistant wheat cultivars had maximum enzyme activity relative to susceptible cultivars.
- Taxon
- wheatTriticum aestivumt0
- Material
- resistant cultivarse0
- Outcome
- enzyme activitye0
- Direction
- maximume0
- Comparator
- susceptible cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the resistant cultivars have shown maximum enzyme activity in comparison to the susceptible cultivars”
t0“wheat”
Claim · model-written summary
Root tissues had increased enzyme activity relative to shoot tissues regardless of inoculation.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- root tissuese0
- Outcome
- enzyme activitye0
- Direction
- increasede0
- Qualifier
- irrespective of nematode inoculatione0
- Comparator
- shoot tissuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root tissues had shown increased enzyme activity in comparison to the shoot tissues, irrespective of nematode inoculation.”
t0“wheat”
Claim · model-written summary
PAL showed maximum enzyme activity among the three enzymes in shoots and roots.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- shoots and rootse0
- Gene
- PALe0
- Outcome
- enzyme activitye0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the three biochemical enzymes studied, PAL had shown the maximum enzyme activity, in both the shoots and roots irrespective of susceptible and resistant cultivars.”
t0“wheat”
Claim · model-written summary
The F1 generation had increased activity of all three studied enzymes over either parent.
- Taxon
- wheatTriticum aestivumt0
- Material
- F1 generatione0
- Outcome
- enzyme activitye0
- Direction
- tremendous increasee0
- Comparator
- either of the parentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F1 generation had shown tremendous increase in the enzyme activity in all the three enzymes studied, over either of the parents.”
t0“wheat”
Claim · model-written summary
The F2 population had lower enzyme activity than the F1 population.
- Taxon
- wheatTriticum aestivumt0
- Material
- F2 populatione0
- Outcome
- enzyme activitye0
- Direction
- lowere0
- Comparator
- F1 populatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The F2 population showed lower enzyme activity in comparison to F1 population.”
t0“wheat”
Claim · model-written summary
BC1 test cross and BC1 populations had nearly equal enzyme activity.
- Taxon
- wheatTriticum aestivumt0
- Material
- BC1 (test cross)e0
- Outcome
- resultse0
- Direction
- almost at pare0
- Comparator
- BC1 populatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results with BC1 (test cross) and BC1 population were almost at par.”
t0“wheat”
Claim · model-written summary
PPO activity did not differ significantly between control and inoculated wheat plants.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- inoculated plantse0
- Gene
- Polyphenol-oxidase (PPO)e0
- Outcome
- Polyphenol-oxidase (PPO)e0
- Direction
- did not reveal a significant differencee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Polyphenol-oxidase (PPO) did not reveal a significant difference in the control and inoculated plants irrespective of susceptible and resistant cultivar taken into consideration or the type of tissue (shoot/root) analysed.”
t0“wheat”
The same questions in other papers
inoculation · physiology: antioxidant enzymes · Triticum aestivum (wheat)Positive and negative results
2 papers in the same direction as this paper · 44 in the opposite direction
- positive
- positive
- positive
43 papers more in this group
See all 47 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.