Abstract
The diamondback moth, Plutella xylostella (L.), has become the most destructive insect pest of cruciferous plants, such as B. napus throughout the world including Iran. In this study, the induction of resistance was activated in oilseed rape plants (Brassica napus L.) using foliar application of jasmonic acid (JA) and mealy cabbage aphid either individually or in combination against diamondback moth. Induced resistance by inducers significantly reduced the population growth parameters, as well as the survival rate of immature P. xylostella. Also, the nutritional indices of P. xylostella were studied to evaluate the potential impact of induced resistance on the insect feeding behavior. The values of the efficiency of conversion of ingested food (ECI), the efficiency of conversion of digested food (ECD), relative consumption rate (RCR), and relative growth rate (RGR) of P. xylostella on JA-treated plants were significantly reduced compared to control. These are because glucosinolates and proteinase inhibitors (PIs) are induced following treatment of plants. Also, we found a significantly higher GOX activity in the salivary gland extracts of larvae fed on JA treatment. These results express that JA and/or Aphid application induces systemic defenses in oilseed rape that have a negative effect on P. xylostella fitness. These findings develop our knowledge the effects of induced defenses on P. xylostella.
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Claims 4
Claim · model-written summary
Induced resistance from jasmonic acid and/or aphid feeding significantly reduced population growth parameters and survival of immature P. xylostella on oilseed rape.
- Taxon
- Brassica napus L.
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Treatment
- foliar application of jasmonic acid (JA) and mealy cabbage aphide0
- Interactor
- P. xylostellae1pest
- Outcome
- population growth parameters, as well as the survival rate of immature P. xylostellae1
- Direction
- significantly reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“induction of resistance was activated in oilseed rape plants (Brassica napus L.) using foliar application of jasmonic acid (JA) and mealy cabbage aphid either individually or in combination against diamondback moth”
e1“Induced resistance by inducers significantly reduced the population growth parameters, as well as the survival rate of immature P. xylostella”
Claim · model-written summary
Jasmonic acid-treated plants significantly reduced the efficiency of conversion of ingested and digested food of P. xylostella compared to control.
- Taxon
- Brassica napus L.Brassica napuse0
- Treatment
- foliar application of jasmonic acid (JA)e0
- Interactor
- P. xylostellae2pest
- Outcome
- efficiency of conversion of ingested food (ECI), the efficiency of conversion of digested food (ECD)e2
- Direction
- significantly reducede2
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“induction of resistance was activated in oilseed rape plants (Brassica napus L.) using foliar application of jasmonic acid (JA) and mealy cabbage aphid either individually or in combination against diamondback moth”
e2“The values of the efficiency of conversion of ingested food (ECI), the efficiency of conversion of digested food (ECD), relative consumption rate (RCR), and relative growth rate (RGR) of P. xylostella on JA-treated plants were significantly reduced compared to control”
Claim · model-written summary
Jasmonic acid-treated plants significantly reduced the relative consumption rate and relative growth rate of P. xylostella compared to control.
- Taxon
- Brassica napus L.Brassica napuse0
- Treatment
- foliar application of jasmonic acid (JA)e0
- Interactor
- P. xylostellae2pest
- Outcome
- relative consumption rate (RCR), and relative growth rate (RGR)e2
- Direction
- significantly reducede2
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“induction of resistance was activated in oilseed rape plants (Brassica napus L.) using foliar application of jasmonic acid (JA) and mealy cabbage aphid either individually or in combination against diamondback moth”
e2“The values of the efficiency of conversion of ingested food (ECI), the efficiency of conversion of digested food (ECD), relative consumption rate (RCR), and relative growth rate (RGR) of P. xylostella on JA-treated plants were significantly reduced compared to control”
Claim · model-written summary
Larvae fed on jasmonic acid-treated plants had significantly higher GOX activity in their salivary gland extracts.
- Taxon
- Brassica napus L.Brassica napuse0
- Treatment
- JA treatmente3
- Outcome
- GOX activity in the salivary gland extracts of larvaee3
- Direction
- significantly highere3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“induction of resistance was activated in oilseed rape plants (Brassica napus L.) using foliar application of jasmonic acid (JA) and mealy cabbage aphid either individually or in combination against diamondback moth”
e3“we found a significantly higher GOX activity in the salivary gland extracts of larvae fed on JA treatment”
The same questions in other papers
jasmonic acid · pest · Brassica napus (oilseed rape)Results agree
2 papers in the same direction as this paper
- positive
- positive
application · pest · Brassica napus (oilseed rape)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 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.