Paper · 2010 · Chinese Journal of Plant Ecology

Systemic induced effects of mechanical wounding on the chemical defense of Bt corn (Zea mays)

Feng Yuan

16
claims
26
verbatim quotes
2
citations
2
research areas
—
Not open access

Abstract

Aims The major objective was to explore the difference in the systematic induced effects of mechanical wounding on Bt corn and conventional corn after the first leaf of corn seedlings was mechanically wounded. Methods Two Bt corns,'5422Bt1' (Bt11) and '5422CBCL' (Mon810),as well as their conventional corn '5422' were used to detect changes in the content of direct defense chemical DIMBOA and expression of its genes (Bx1,Bx6 and Bx9),content of direct defense chemical total phenol and expression of its gene (PAL),direct defense protein genes (MPI and PR-2a),and the indirect defense chemical volatile genes (FPS and TPS) in the non-wounded parts (second leaf and roots) by employing chemical analysis and gene expression analysis methods after the first leaf of corn seedlings was mechanically wounded for 6 h. Important findings Mechanical wounding systematically induced the expression of PAL and TPS in the second leaf and PAL and FPS in the roots of conventional corn '5422' as compared with the healthy plants,which significantly increased the DIMBOA content in the second leaf but reduced the DIMBOA content and its gene expression of Bx6 and Bx9 in the roots. In addition,mechanical wounding systematically induced the gene expression of Bx6,PAL,PR-2a and TPS in the second leaf and Bx6,Bx9,PAL,MPI,PR-2a and TPS in the roots of Bt corn '5422Bt1',resulting in increased DIMBOA content of the second leaf. In terms of '5422CBCL',mechanical wounding systematically induced the gene expression of Bx9,PAL,PR-2a and TPS in the second leaf and the gene expression of Bx6,PAL,MPI and TPS in the roots,which remarkably increased the total phenol content in the roots. The systematic induced effect of mechanical wounding on the chemical defense response is more obvious in the two Bt corns as compared with the conventional corn '5422',suggesting that there is a synergistic relationship between the Bt gene introduction and chemical defense response during the systematic induced defense processes inflicted by mechanical wounding.

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Claims 16

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding systemically induced PAL and TPS expression in the second leaf of conventional corn 5422 relative to healthy plants.

Taxon
conventional corne0
Material
5422e0
Organ / stage
second leafe0
Treatment
mechanical woundinge0
Gene
PAL and TPSe0
Outcome
expressione0
Direction
inducede0
Comparator
healthy plantse0

Verbatim

e0

“mechanical wounding systematically induced the expression of PAL and TPS in the second leaf and PAL and FPS in the roots of conventional corn '5422' as compared with the healthy plants”

✓ located after whitespace/quote normalisation · abstract, characters 835–1019 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding systemically induced PAL and FPS expression in the roots of conventional corn 5422 relative to healthy plants.

Taxon
conventional corne0
Material
5422e0
Organ / stage
rootse0
Treatment
mechanical woundinge0
Gene
PAL and FPSe0
Outcome
expressione0
Direction
inducede0
Comparator
healthy plantse0

Verbatim

e0

“mechanical wounding systematically induced the expression of PAL and TPS in the second leaf and PAL and FPS in the roots of conventional corn '5422' as compared with the healthy plants”

✓ located after whitespace/quote normalisation · abstract, characters 835–1019 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Mechanical wounding significantly increased DIMBOA content in the second leaf of conventional corn 5422 relative to healthy plants.

Taxon
conventional corne0
Material
5422e0
Organ / stage
second leafe1
Treatment
mechanical woundinge0
Outcome
DIMBOA contente1
Direction
increasede1
Comparator
healthy plantse0

Verbatim

e0

“mechanical wounding systematically induced the expression of PAL and TPS in the second leaf and PAL and FPS in the roots of conventional corn '5422' as compared with the healthy plants”

✓ located after whitespace/quote normalisation · abstract, characters 835–1019 · show in text ↑
e1

“which significantly increased the DIMBOA content in the second leaf”

✓ located verbatim in the source · abstract, characters 1020–1087 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Mechanical wounding reduced DIMBOA content and Bx6 and Bx9 expression in the roots of conventional corn 5422 relative to healthy plants.

Taxon
conventional corne0
Material
5422e0
Organ / stage
rootse2
Treatment
mechanical woundinge0
Gene
Bx6 and Bx9e2
Outcome
DIMBOA content and its gene expressione2
Direction
reducede2
Comparator
healthy plantse0

Verbatim

e0

“mechanical wounding systematically induced the expression of PAL and TPS in the second leaf and PAL and FPS in the roots of conventional corn '5422' as compared with the healthy plants”

✓ located after whitespace/quote normalisation · abstract, characters 835–1019 · show in text ↑
e2

“but reduced the DIMBOA content and its gene expression of Bx6 and Bx9 in the roots”

✓ located verbatim in the source · abstract, characters 1088–1170 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding induced Bx6, PAL and PR-2a expression in the second leaf of Bt corn 5422Bt1.

Taxon
Bt corne3
Material
5422Bt1e3
Organ / stage
second leafe3
Treatment
mechanical woundinge3
Gene
Bx6,PAL,PR-2ae3
Outcome
gene expressione3
Direction
inducede3

Not reportedComparator

Verbatim

e3

“mechanical wounding systematically induced the gene expression of Bx6,PAL,PR-2a and TPS in the second leaf and Bx6,Bx9,PAL,MPI,PR-2a and TPS in the roots of Bt corn '5422Bt1'”

✓ located verbatim in the source · abstract, characters 1184–1358 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding induced TPS expression in the second leaf of Bt corn 5422Bt1.

Taxon
Bt corne3
Material
5422Bt1e3
Organ / stage
second leafe3
Treatment
mechanical woundinge3
Gene
TPSe3
Outcome
gene expressione3
Direction
inducede3

Not reportedComparator

Verbatim

e3

“mechanical wounding systematically induced the gene expression of Bx6,PAL,PR-2a and TPS in the second leaf and Bx6,Bx9,PAL,MPI,PR-2a and TPS in the roots of Bt corn '5422Bt1'”

✓ located verbatim in the source · abstract, characters 1184–1358 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding induced Bx6, Bx9 and PAL expression in the roots of Bt corn 5422Bt1.

Taxon
Bt corne3
Material
5422Bt1e3
Organ / stage
rootse3
Treatment
mechanical woundinge3
Gene
Bx6,Bx9,PALe3
Outcome
gene expressione3
Direction
inducede3

Not reportedComparator

Verbatim

e3

“mechanical wounding systematically induced the gene expression of Bx6,PAL,PR-2a and TPS in the second leaf and Bx6,Bx9,PAL,MPI,PR-2a and TPS in the roots of Bt corn '5422Bt1'”

✓ located verbatim in the source · abstract, characters 1184–1358 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding induced MPI, PR-2a and TPS expression in the roots of Bt corn 5422Bt1.

Taxon
Bt corne3
Material
5422Bt1e3
Organ / stage
rootse3
Treatment
mechanical woundinge3
Gene
MPI,PR-2a and TPSe3
Outcome
gene expressione3
Direction
inducede3

Not reportedComparator

Verbatim

e3

“mechanical wounding systematically induced the gene expression of Bx6,PAL,PR-2a and TPS in the second leaf and Bx6,Bx9,PAL,MPI,PR-2a and TPS in the roots of Bt corn '5422Bt1'”

✓ located verbatim in the source · abstract, characters 1184–1358 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding increased DIMBOA content in the second leaf of Bt corn 5422Bt1.

Taxon
Bt corne3
Material
5422Bt1e3
Organ / stage
second leafe4
Treatment
mechanical woundinge3
Outcome
DIMBOA contente4
Direction
increasede4

Not reportedComparator

Verbatim

e3

“mechanical wounding systematically induced the gene expression of Bx6,PAL,PR-2a and TPS in the second leaf and Bx6,Bx9,PAL,MPI,PR-2a and TPS in the roots of Bt corn '5422Bt1'”

✓ located verbatim in the source · abstract, characters 1184–1358 · show in text ↑
e4

“resulting in increased DIMBOA content of the second leaf”

✓ located verbatim in the source · abstract, characters 1359–1415 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding induced Bx9, PAL and PR-2a expression in the second leaf of Bt corn 5422CBCL.

Taxon
Bt cornse7
Material
5422CBCLe5
Organ / stage
second leafe5
Treatment
mechanical woundinge5
Gene
Bx9,PAL,PR-2ae5
Outcome
gene expressione5
Direction
inducede5

Not reportedComparator

Verbatim

e5

“In terms of '5422CBCL',mechanical wounding systematically induced the gene expression of Bx9,PAL,PR-2a and TPS in the second leaf and the gene expression of Bx6,PAL,MPI and TPS in the roots”

✓ located verbatim in the source · abstract, characters 1417–1606 · show in text ↑
e7

“The systematic induced effect of mechanical wounding on the chemical defense response is more obvious in the two Bt corns as compared with the conventional corn '5422'”

✓ located verbatim in the source · abstract, characters 1673–1840 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding induced TPS expression in the second leaf of Bt corn 5422CBCL.

Taxon
Bt cornse7
Material
5422CBCLe5
Organ / stage
second leafe5
Treatment
mechanical woundinge5
Gene
TPSe5
Outcome
gene expressione5
Direction
inducede5

Not reportedComparator

Verbatim

e5

“In terms of '5422CBCL',mechanical wounding systematically induced the gene expression of Bx9,PAL,PR-2a and TPS in the second leaf and the gene expression of Bx6,PAL,MPI and TPS in the roots”

✓ located verbatim in the source · abstract, characters 1417–1606 · show in text ↑
e7

“The systematic induced effect of mechanical wounding on the chemical defense response is more obvious in the two Bt corns as compared with the conventional corn '5422'”

✓ located verbatim in the source · abstract, characters 1673–1840 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding induced Bx6, PAL and MPI expression in the roots of Bt corn 5422CBCL.

Taxon
Bt cornse7
Material
5422CBCLe5
Organ / stage
rootse5
Treatment
mechanical woundinge5
Gene
Bx6,PAL,MPIe5
Outcome
gene expressione5
Direction
inducede5

Not reportedComparator

Verbatim

e5

“In terms of '5422CBCL',mechanical wounding systematically induced the gene expression of Bx9,PAL,PR-2a and TPS in the second leaf and the gene expression of Bx6,PAL,MPI and TPS in the roots”

✓ located verbatim in the source · abstract, characters 1417–1606 · show in text ↑
e7

“The systematic induced effect of mechanical wounding on the chemical defense response is more obvious in the two Bt corns as compared with the conventional corn '5422'”

✓ located verbatim in the source · abstract, characters 1673–1840 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding induced TPS expression in the roots of Bt corn 5422CBCL.

Taxon
Bt cornse7
Material
5422CBCLe5
Organ / stage
rootse5
Treatment
mechanical woundinge5
Gene
TPSe5
Outcome
gene expressione5
Direction
inducede5

Not reportedComparator

Verbatim

e5

“In terms of '5422CBCL',mechanical wounding systematically induced the gene expression of Bx9,PAL,PR-2a and TPS in the second leaf and the gene expression of Bx6,PAL,MPI and TPS in the roots”

✓ located verbatim in the source · abstract, characters 1417–1606 · show in text ↑
e7

“The systematic induced effect of mechanical wounding on the chemical defense response is more obvious in the two Bt corns as compared with the conventional corn '5422'”

✓ located verbatim in the source · abstract, characters 1673–1840 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mechanical wounding remarkably increased total phenol content in the roots of Bt corn 5422CBCL.

Taxon
Bt cornse7
Material
5422CBCLe5
Organ / stage
rootse6
Treatment
mechanical woundinge5
Outcome
total phenol contente6
Direction
increasede6

Not reportedComparator

Verbatim

e5

“In terms of '5422CBCL',mechanical wounding systematically induced the gene expression of Bx9,PAL,PR-2a and TPS in the second leaf and the gene expression of Bx6,PAL,MPI and TPS in the roots”

✓ located verbatim in the source · abstract, characters 1417–1606 · show in text ↑
e6

“which remarkably increased the total phenol content in the roots”

✓ located verbatim in the source · abstract, characters 1607–1671 · show in text ↑
e7

“The systematic induced effect of mechanical wounding on the chemical defense response is more obvious in the two Bt corns as compared with the conventional corn '5422'”

✓ located verbatim in the source · abstract, characters 1673–1840 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The systemic induced effect of mechanical wounding on chemical defense was more obvious in the two Bt corns than in conventional corn 5422.

Taxon
Bt cornse7
Treatment
mechanical woundinge7
Outcome
systematic induced effecte7
Direction
more obviouse7
Comparator
conventional corne7

Verbatim

e7

“The systematic induced effect of mechanical wounding on the chemical defense response is more obvious in the two Bt corns as compared with the conventional corn '5422'”

✓ located verbatim in the source · abstract, characters 1673–1840 · show in text ↑
Associationhypothesisoriginal resultpositivemeasured

Claim · model-written summary

The Bt gene introduction may have a synergistic relationship with the chemical defense response to mechanical wounding.

Taxon
Bt cornse7
Gene
Bt genee1
Outcome
chemical defense responsee1

Not reportedDirection

Verbatim

e7

“The systematic induced effect of mechanical wounding on the chemical defense response is more obvious in the two Bt corns as compared with the conventional corn '5422'”

✓ located verbatim in the source · abstract, characters 1673–1840 · show in text ↑
e1

“suggesting that there is a synergistic relationship between the Bt gene introduction and chemical defense response”

✓ located verbatim in the source · abstract, characters 1841–1955 · show in text ↑

mechanical · quality: phytochemicals · Zea mays (maize)Positive and negative results

3 papers: 1 positive, 2 negative or no effect

2 in the opposite direction

  1. no effect
  2. negative
See all 3 papers →

mechanical · molecular: expression · Zea mays (maize)Positive and negative results

8 papers: 7 positive, 1 negative or no effect

6 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

mechanical · molecular: metabolites · Zea mays (maize)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 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.