Abstract
Abstract Expression profiles of ten genes commonly up-regulated during plant defense against microbial pathogens were compared temporally during compatible and incompatible interactions with first-instar Hessian fly larvae, in two wheat lines carrying different resistance genes. Quantitative real-time PCR revealed that while a lipoxygenase gene (WCI-2) was strongly up-regulated during the incompatible interactions, genes encoding β-1,3 endoglucanase (GNS) and an integral membrane protein (WIR1) were moderately responsive. Genes for thionin-like protein (WCI-3), PR-17-like protein (WCI-5), MAP kinase (WCK-1), phenylalanine ammonia-lyase (PAL), pathogenesis-related protein-1 (PR-1), receptor-like kinase (LRK10) and heat shock protein 70 (HSP70) were minimally responsive. The application of signaling molecules, salicylic acid (SA), methyl jasmonate (MJ) and abscisic acid (ABA), to insect-free plants demonstrated association of these genes with specific defense-response pathways. SA-induced up-regulation of a gene related to lipoxygenases that are involved in jasmonic acid (JA)-biosynthesis is suggestive of positive cross-talk between SA- and JA-mediated signaling pathways. Data suggest that alternative mechanisms may be involved since few of these classical defense-response genes are significantly up-regulated during incompatible interactions between wheat and Hessian fly.
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Claims 6
Claim · model-written summary
WCI-2 was strongly up-regulated during incompatible Hessian fly interactions.
- Taxon
- wheat
Triticum aestivumt0 - Interactor
- Hessian fly
Mayetiola destructort0pest - Gene
- WCI-2e0
- Outcome
- up-regulatede0
- Direction
- strongly up-regulatede0
- Qualifier
- incompatible interactionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a lipoxygenase gene (WCI-2) was strongly up-regulated during the incompatible interactions”
t0“wheat during Hessian fly larval feeding”
Claim · model-written summary
GNS and WIR1 were moderately responsive during incompatible interactions.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- Hessian flyMayetiola destructort0pest
- Gene
- GNS) and an integral membrane protein (WIR1e0
- Outcome
- moderately responsivee0
- Qualifier
- incompatible interactionse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genes encoding β-1,3 endoglucanase (GNS) and an integral membrane protein (WIR1) were moderately responsive”
e1“during the incompatible interactions”
t0“wheat during Hessian fly larval feeding”
Claim · model-written summary
Seven listed defense genes were minimally responsive.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- Hessian flyMayetiola destructort0pest
- Outcome
- minimally responsivee0
- Qualifier
- WCI-3), PR-17-like protein (WCI-5), MAP kinase (WCK-1), phenylalanine ammonia-lyase (PAL), pathogenesis-related protein-1 (PR-1), receptor-like kinase (LRK10) and heat shock protein 70 (HSP70e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genes for thionin-like protein (WCI-3), PR-17-like protein (WCI-5), MAP kinase (WCK-1), phenylalanine ammonia-lyase (PAL), pathogenesis-related protein-1 (PR-1), receptor-like kinase (LRK10) and heat shock protein 70 (HSP70) were minimally responsive”
t0“wheat during Hessian fly larval feeding”
Claim · model-written summary
Applied SA up-regulated a lipoxygenase-related gene.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- salicylic acid (SA)e1
- Gene
- a gene related to lipoxygenasese0
- Outcome
- up-regulatione0
- Direction
- up-regulatione0
- Qualifier
- insect-free plantse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA-induced up-regulation of a gene related to lipoxygenases”
e1“salicylic acid (SA), methyl jasmonate (MJ) and abscisic acid (ABA), to insect-free plants”
t0“wheat during Hessian fly larval feeding”
Claim · model-written summary
The authors interpret SA-induced lipoxygenase-related expression as suggesting positive SA-JA signaling cross-talk.
- Taxon
- wheatTriticum aestivumt0
- Gene
- a gene related to lipoxygenasese0
- Outcome
- positive cross-talke0
- Qualifier
- SA- and JA-mediated signaling pathwayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA-induced up-regulation of a gene related to lipoxygenases that are involved in jasmonic acid (JA)-biosynthesis is suggestive of positive cross-talk between SA- and JA-mediated signaling pathways”
t0“wheat during Hessian fly larval feeding”
Claim · model-written summary
The authors suggest alternative defense mechanisms because few classical defense genes were significantly up-regulated in incompatible wheat-Hessian fly interactions.
- Taxon
- wheatTriticum aestivume0
- Interactor
- Hessian flyMayetiola destructore0pest
- Outcome
- alternative mechanisms may be involvede0
- Qualifier
- few of these classical defense-response genes are significantly up-regulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alternative mechanisms may be involved since few of these classical defense-response genes are significantly up-regulated during incompatible interactions between wheat and Hessian fly”
The same questions in other papers
salicylic acid · molecular: expression · Triticum aestivum (wheat)Positive and negative results
28 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- positive
- negative
31 papers more in this group
See all 35 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.