Abstract
The peach-potato aphid (Myzus persicae Sulzer) is a major pest of potato (Solanum tuberosum L.) but the molecular characterization of this interaction particularly with regard to oxidants and antioxidants remains to be undertaken. Aphid colonies reared on potato leaves containing high ascorbate were twice the size of those grown on leaves with low ascorbate. Infestation-dependent decreases in the abundance of key transcripts such as chloroplastic FeSOD, peroxisomal catalase 2, PR1 and JAZ1 preceded detectable leaf H(2)O(2) or polyphenol accumulation. The leaf glutathione pool was increased 48 h after infestation, but the amount of ascorbate was unchanged. The ascorbate/dehydroacorbate (DHA) ratio was lower at 48 h but the ratio of reduced glutathione (GSH) to oxidized glutathione (GSSG) was unchanged. While DHA reductase and GSSG reductase activities were unaffected by aphid feeding, non-specific peroxidase activities were enhanced 48 h following aphid infestation. Brown ethanol-insoluble deposits were observed close to leaf veins following aphid infestation. Taken together, the results demonstrate that high ascorbate favours aphid colony expansion and that perturbations in the leaf antioxidant system are intrinsic to the potato leaf response to aphids. Moreover, these changes together with the induction of hormone-related transcripts precede the deposition of defence-associated oxidized polyphenols along the stylet track.
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Claims 10
Claim · model-written summary
Aphid colonies reared on potato leaves with high ascorbate were twice the size of those on leaves with low ascorbate.
- Taxon
- potato
Solanum tuberosume0 - Interactor
- Myzus persicae Sulzer
Myzus persicaet1pest - Compound
- ascorbatee0
- Outcome
- Aphid coloniese0
- Direction
- twice the sizee0
- Comparator
- leaves with low ascorbatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aphid colonies reared on potato leaves containing high ascorbate were twice the size of those grown on leaves with low ascorbate”
t1“Myzus persicae Sulzer”
Claim · model-written summary
Aphid infestation decreased the abundance of key transcripts (chloroplastic FeSOD, peroxisomal catalase 2, PR1, JAZ1) in potato leaves before detectable H2O2 or polyphenol accumulation.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Infestatione0
- Interactor
- Myzus persicae SulzerMyzus persicaet1pest
- Outcome
- abundance of key transcripts such as chloroplastic FeSOD, peroxisomal catalase 2, PR1 and JAZ1e0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infestation-dependent decreases in the abundance of key transcripts such as chloroplastic FeSOD, peroxisomal catalase 2, PR1 and JAZ1”
t0“Infestation of potato (Solanum tuberosum L.)”
t1“Myzus persicae Sulzer”
Claim · model-written summary
The leaf glutathione pool in potato increased 48 h after aphid infestation.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- infestatione0
- Interactor
- Myzus persicae SulzerMyzus persicaet1pest
- Outcome
- leaf glutathione poole0
- Direction
- increasede0
- Qualifier
- 48 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaf glutathione pool was increased 48 h after infestation”
t0“Infestation of potato (Solanum tuberosum L.)”
t1“Myzus persicae Sulzer”
Claim · model-written summary
The amount of ascorbate in potato leaves was unchanged by aphid infestation.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- infestatione0
- Interactor
- Myzus persicae SulzerMyzus persicaet1pest
- Outcome
- amount of ascorbatee0
- Direction
- unchangede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaf glutathione pool was increased 48 h after infestation, but the amount of ascorbate was unchanged”
t0“Infestation of potato (Solanum tuberosum L.)”
t1“Myzus persicae Sulzer”
Claim · model-written summary
The ascorbate/dehydroascorbate ratio in infested potato leaves was lower at 48 h.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Infestationt0
- Interactor
- Myzus persicae SulzerMyzus persicaet1pest
- Outcome
- ascorbate/dehydroacorbate (DHA) ratioe0
- Direction
- lowere0
- Qualifier
- 48 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ascorbate/dehydroacorbate (DHA) ratio was lower at 48 h”
t0“Infestation of potato (Solanum tuberosum L.)”
t1“Myzus persicae Sulzer”
Claim · model-written summary
The ratio of reduced to oxidized glutathione (GSH/GSSG) in infested potato leaves was unchanged at 48 h.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Infestationt0
- Interactor
- Myzus persicae SulzerMyzus persicaet1pest
- Outcome
- ratio of reduced glutathione (GSH) to oxidized glutathione (GSSG)e0
- Direction
- unchangede0
- Qualifier
- 48 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ascorbate/dehydroacorbate (DHA) ratio was lower at 48 h but the ratio of reduced glutathione (GSH) to oxidized glutathione (GSSG) was unchanged”
t0“Infestation of potato (Solanum tuberosum L.)”
t1“Myzus persicae Sulzer”
Claim · model-written summary
DHA reductase and GSSG reductase activities in potato leaves were unaffected by aphid feeding.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- aphid feedinge0
- Interactor
- Myzus persicae SulzerMyzus persicaet1pest
- Outcome
- DHA reductase and GSSG reductase activitiese0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DHA reductase and GSSG reductase activities were unaffected by aphid feeding”
t0“Infestation of potato (Solanum tuberosum L.)”
t1“Myzus persicae Sulzer”
Claim · model-written summary
Non-specific peroxidase activities in potato leaves were enhanced 48 h after aphid infestation.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- aphid infestatione0
- Interactor
- Myzus persicae SulzerMyzus persicaet1pest
- Outcome
- non-specific peroxidase activitiese0
- Direction
- enhancede0
- Qualifier
- 48 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“non-specific peroxidase activities were enhanced 48 h following aphid infestation”
t0“Infestation of potato (Solanum tuberosum L.)”
t1“Myzus persicae Sulzer”
Claim · model-written summary
Brown ethanol-insoluble deposits were observed close to leaf veins of potato following aphid infestation.
- Taxon
- potatoSolanum tuberosumt0
- Organ / stage
- leaf veinse0
- Treatment
- aphid infestatione0
- Interactor
- Myzus persicae SulzerMyzus persicaet1pest
- Outcome
- Brown ethanol-insoluble depositse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Brown ethanol-insoluble deposits were observed close to leaf veins following aphid infestation”
t0“Infestation of potato (Solanum tuberosum L.)”
t1“Myzus persicae Sulzer”
Claim · model-written summary
Induction of hormone-related transcripts in infested potato preceded the deposition of defence-associated oxidized polyphenols along the stylet track.
- Taxon
- potatoSolanum tuberosumt0
- Interactor
- Myzus persicae SulzerMyzus persicaet1pest
- Outcome
- induction of hormone-related transcriptse0
- Qualifier
- precede the deposition of defence-associated oxidized polyphenolse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the induction of hormone-related transcripts precede the deposition of defence-associated oxidized polyphenols along the stylet track”
t0“Infestation of potato (Solanum tuberosum L.)”
t1“Myzus persicae Sulzer”
The same questions in other papers
infection · Myzus persicae · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 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.