Paper · 1994 · Bioscience Biotechnology and Biochemistry

Stimulation of Phenylalanine Ammonia-lyase Activity and Lignification in Rice Callus Treated with Chitin, Chitosan, and Their Derivatives

Shinya Notsu; Norihiko Saito; Hideto Kosaki; et al.

4
claims
5
verbatim quotes
25
citations
1
research areas
—
Not open access

Abstract

By treatment of rice callus with chitin, chitosan, or their derivatives, phenyl alanine ammonia-lyase activity was stimulated up to 2.0 fold that of the control within 24 h, chitinase activity up to 3.5 fold within 48 h, and lignification up to 1.7 fold within 72 h. The elicitor activity was little affected by the chemical structure of the N-fatty acyl group (C2–C5) in chitosan.

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Claims 4

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment with chitin, chitosan or derivatives stimulated phenyl alanine ammonia-lyase activity in rice callus up to 2.0-fold of control within 24 hours.

Organ / stage
calluse0
Treatment
chitin, chitosan, or their derivativese0
Gene
phenyl alanine ammonia-lyasee0
Outcome
phenyl alanine ammonia-lyase activitye0
Direction
stimulatede0
Value
2.0 folde0
Qualifier
within 24 he0
Comparator
controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“By treatment of rice callus with chitin, chitosan, or their derivatives, phenyl alanine ammonia-lyase activity was stimulated up to 2.0 fold that of the control within 24 h”

✓ located verbatim in the source · abstract, characters 0–172 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment with chitin, chitosan or derivatives stimulated chitinase activity up to 3.5-fold within 48 hours.

Organ / stage
calluse0
Treatment
chitin, chitosan, or their derivativese0
Gene
chitinasee0
Outcome
chitinase activitye0
Direction
stimulatede0
Value
3.5 folde0
Qualifier
within 48 he0
Comparator
controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“By treatment of rice callus with chitin, chitosan, or their derivatives, phenyl alanine ammonia-lyase activity was stimulated up to 2.0 fold that of the control within 24 h, chitinase activity up to 3.5 fold within 48 h”

✓ located verbatim in the source · abstract, characters 0–219 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatment with chitin, chitosan or derivatives stimulated rice callus lignification up to 1.7-fold within 72 hours.

Organ / stage
calluse0
Treatment
chitin, chitosan, or their derivativese0
Outcome
lignificatione0
Direction
stimulatede0
Value
1.7 folde0
Qualifier
within 72 he0
Comparator
controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“By treatment of rice callus with chitin, chitosan, or their derivatives, phenyl alanine ammonia-lyase activity was stimulated up to 2.0 fold that of the control within 24 h, chitinase activity up to 3.5 fold within 48 h, and lignification up to 1.7 fold within 72 h”

✓ located verbatim in the source · abstract, characters 0–265 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Changing the N-fatty acyl group structure in chitosan had little effect on elicitor activity.

Organ / stage
Callust0
Treatment
chemical structure of the N-fatty acyl group (C2–C5) in chitosane0
Outcome
elicitor activitye0
Direction
little affectede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The elicitor activity was little affected by the chemical structure of the N-fatty acyl group (C2–C5) in chitosan”

✓ located verbatim in the source · abstract, characters 267–380 · show in text ↑
t0

“Rice Callus Treated with Chitin, Chitosan, and Their Derivatives”

✓ located verbatim in the source · title, characters 73–137 · show in text ↑

chitosan · molecular: metabolites · Oryza sativa (rice)Results agree

7 papers: 7 positive, 0 negative or no effect

6 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

3 papers more in this group

See all 7 papers →

chitosan · physiology: antioxidant enzymes · Oryza sativa (rice)Results agree

11 papers: 11 positive, 0 negative or no effect

10 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

7 papers more in this group

See all 11 papers →

resistance inducer · molecular: metabolites · Oryza sativa (rice)Positive and negative results

9 papers: 7 positive, 2 negative or no effect

6 papers in the same direction as this paper · 2 in the opposite direction

  1. negative
  2. no effect
  3. positive

5 papers more in this group

See all 9 papers →

resistance inducer · physiology: antioxidant enzymes · Oryza sativa (rice)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. 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.