Abstract
Plant resistance can provide effective, economical, and sustainable pest control. Tolerance to the soybean aphid has been identified and confirmed in the soybean KS4202. Although its resistance mechanisms are not fully understood, evidence suggests that enhanced detoxification of reactive oxygen species (ROS) is an active system under high aphid infestation. We further explored tolerance by evaluating the differences in constitutive and aphid-induced defenses in KS4202 through the expression of selected defense-related transcripts and the levels of the phytohormones abscisic acid (ABA), jasmonic acid (JA), JA-isoleucine (JA-Ile), cis-(+)-12-oxo-phytodienoic acid (OPDA), and salicylic acid (SA) over several time points. Higher constitutive levels of ABA and JA, and basal expression of ABA- and JA-related transcripts were found in the tolerant genotype. Conversely, aphid-induced defenses in KS4202 were expressed as an upregulation of peroxidases under prolonged aphid infestation (>7 days). Our results point at the importance of phytohormones in constitutive defense in KS4202 tolerance to the soybean aphid. Understanding the underlying mechanisms of tolerance will assist breeding for soybean with these traits, and perhaps help extend the durability of Rag (Resistance to Aphis glycines)-mediated resistance genes.
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Claims 4
Claim · model-written summary
Higher constitutive levels of ABA and JA were found in the aphid-tolerant soybean genotype.
- Taxon
- Soybean
Glycine maxt0 - Material
- tolerant genotypee0
- Outcome
- constitutive levels of ABA and JAe0
- Direction
- Highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Contribute to Soybean Tolerance”
e0“Higher constitutive levels of ABA and JA, and basal expression of ABA- and JA-related transcripts were found in the tolerant genotype”
Claim · model-written summary
Higher basal expression of ABA- and JA-related transcripts was found in the aphid-tolerant soybean genotype.
- Taxon
- SoybeanGlycine maxt0
- Material
- tolerant genotypee0
- Outcome
- basal expression of ABA- and JA-related transcriptse0
- Direction
- higherinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Contribute to Soybean Tolerance”
e0“Higher constitutive levels of ABA and JA, and basal expression of ABA- and JA-related transcripts were found in the tolerant genotype”
Claim · model-written summary
Under prolonged soybean aphid infestation (more than 7 days), aphid-induced defenses in KS4202 were expressed as upregulation of peroxidases.
- Taxon
- SoybeanGlycine maxt0
- Material
- KS4202e0
- Treatment
- prolonged aphid infestation (>7 days)e0
- Interactor
- aphide0pest
- Outcome
- peroxidasese0
- Direction
- upregulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Contribute to Soybean Tolerance”
e0“aphid-induced defenses in KS4202 were expressed as an upregulation of peroxidases under prolonged aphid infestation (>7 days)”
Claim · model-written summary
The results point to the importance of phytohormones in constitutive defense underlying KS4202 tolerance to the soybean aphid.
- Taxon
- SoybeanGlycine maxt0
- Material
- KS4202e0
- Interactor
- soybean aphid
.jpg?width=60)
Aphis glycinese0pest - Compound
- phytohormonese0
- Outcome
- tolerance to the soybean aphide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Contribute to Soybean Tolerance”
e0“Our results point at the importance of phytohormones in constitutive defense in KS4202 tolerance to the soybean aphid”
The same questions in other papers
infection · physiology: antioxidant enzymes · Glycine max (soybean)Positive and negative results
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- negative
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See all 10 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.