Paper · 2009

Changes in flavonoids content and related enzyme activity of sugarcane leaves under PEG stress

Qiu Pei-ling

8
claims
21
verbatim quotes
1
citations
1
research areas
—
Not open access

Abstract

The content of flavonoids and related enzyme activities in the young plants were studied in order to analyze the effect of PEG treatment on drought resistance of two sugarcane cultivars ROC22 and ROC16.The results indicated as follows: PEG stress could decrease the content of flavonoids in ROC22 with high drought-resistance,whereas the content of flavonoids in ROC16 with low drought-resistance showed decreasing first and increasing later.During the course of PEG stress,the phenylalanine ammonialyase activity in ROC22 and ROC16 decreased for some time but increased afterwards.The polyphenol oxidase activity showed rising first and dropping later in ROC22 but always decreasing in ROC16.The peroxidase activities in ROC22 and ROC16 decreased continuously.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 8

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

PEG stress decreased flavonoid content in drought resistant ROC22.

Taxon
sugarcanet0
Material
ROC22e0
Treatment
PEG stresse0
Outcome
content of flavonoidse0
Direction
decreasee0

Not reportedComparator

Verbatim

e0

“PEG stress could decrease the content of flavonoids in ROC22 with high drought-resistance”

✓ located verbatim in the source · abstract, characters 236–325 · show in text ↑
t0

“sugarcane”

✓ located verbatim in the source · title, characters 61–70 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Flavonoid content in ROC16 decreased first and then increased under PEG stress.

Taxon
sugarcanet1
Material
ROC16e0
Treatment
PEG stresst0
Outcome
content of flavonoidse0
Direction
decreasing first and increasing latere0

Not reportedComparator

Verbatim

e0

“the content of flavonoids in ROC16 with low drought-resistance showed decreasing first and increasing later”

✓ located verbatim in the source · abstract, characters 334–441 · show in text ↑
t0

“PEG stress”

✓ located verbatim in the source · title, characters 84–94 · show in text ↑
t1

“sugarcane”

✓ located verbatim in the source · title, characters 61–70 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Phenylalanine ammonialyase activity in ROC22 decreased initially and then increased during PEG stress.

Taxon
sugarcanet0
Material
ROC22e0
Treatment
PEG stresse0
Gene
phenylalanine ammonialyasee0
Outcome
phenylalanine ammonialyase activitye0
Direction
decreased for some time but increased afterwardse0

Not reportedComparator

Verbatim

e0

“During the course of PEG stress,the phenylalanine ammonialyase activity in ROC22 and ROC16 decreased for some time but increased afterwards.”

✓ located verbatim in the source · abstract, characters 442–582 · show in text ↑
t0

“sugarcane”

✓ located verbatim in the source · title, characters 61–70 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Phenylalanine ammonialyase activity in ROC16 decreased initially and then increased during PEG stress.

Taxon
sugarcanet0
Material
ROC16e0
Treatment
PEG stresse0
Gene
phenylalanine ammonialyasee0
Outcome
phenylalanine ammonialyase activitye0
Direction
decreased for some time but increased afterwardse0

Not reportedComparator

Verbatim

e0

“During the course of PEG stress,the phenylalanine ammonialyase activity in ROC22 and ROC16 decreased for some time but increased afterwards.”

✓ located verbatim in the source · abstract, characters 442–582 · show in text ↑
t0

“sugarcane”

✓ located verbatim in the source · title, characters 61–70 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Polyphenol oxidase activity rose first and then fell in ROC22 under PEG stress.

Taxon
sugarcanet1
Material
ROC22e0
Treatment
PEG stresst0
Gene
polyphenol oxidasee0
Outcome
polyphenol oxidase activitye0
Direction
rising first and dropping latere0

Not reportedComparator

Verbatim

e0

“The polyphenol oxidase activity showed rising first and dropping later in ROC22 but always decreasing in ROC16.”

✓ located verbatim in the source · abstract, characters 582–693 · show in text ↑
t0

“PEG stress”

✓ located verbatim in the source · title, characters 84–94 · show in text ↑
t1

“sugarcane”

✓ located verbatim in the source · title, characters 61–70 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Polyphenol oxidase activity decreased throughout in ROC16 under PEG stress.

Taxon
sugarcanet1
Material
ROC16e0
Treatment
PEG stresst0
Gene
polyphenol oxidasee0
Outcome
polyphenol oxidase activitye0
Direction
decreasinge0

Not reportedComparator

Verbatim

e0

“The polyphenol oxidase activity showed rising first and dropping later in ROC22 but always decreasing in ROC16.”

✓ located verbatim in the source · abstract, characters 582–693 · show in text ↑
t0

“PEG stress”

✓ located verbatim in the source · title, characters 84–94 · show in text ↑
t1

“sugarcane”

✓ located verbatim in the source · title, characters 61–70 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Peroxidase activity decreased continuously in ROC22 under PEG stress.

Taxon
sugarcanet1
Material
ROC22e0
Treatment
PEG stresst0
Gene
peroxidasee0
Outcome
peroxidase activitiese0
Direction
decreased continuouslye0

Not reportedComparator

Verbatim

e0

“The peroxidase activities in ROC22 and ROC16 decreased continuously.”

✓ located verbatim in the source · abstract, characters 693–761 · show in text ↑
t0

“PEG stress”

✓ located verbatim in the source · title, characters 84–94 · show in text ↑
t1

“sugarcane”

✓ located verbatim in the source · title, characters 61–70 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Peroxidase activity decreased continuously in ROC16 under PEG stress.

Taxon
sugarcanet1
Material
ROC16e0
Treatment
PEG stresst0
Gene
peroxidasee0
Outcome
peroxidase activitiese0
Direction
decreased continuouslye0

Not reportedComparator

Verbatim

e0

“The peroxidase activities in ROC22 and ROC16 decreased continuously.”

✓ located verbatim in the source · abstract, characters 693–761 · show in text ↑
t0

“PEG stress”

✓ located verbatim in the source · title, characters 84–94 · show in text ↑
t1

“sugarcane”

✓ located verbatim in the source · title, characters 61–70 · show in text ↑

drought · physiology: antioxidant enzymes · Saccharum officinarum (sugarcane)Results differ

9 papers: 5 positive, 4 negative or no effect

3 papers in the same direction as this paper · 5 in the opposite direction

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

drought · quality: phytochemicals · Saccharum officinarum (sugarcane)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. negative
See all 2 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.