Paper · 1981 · Planta Medica

Phosphate Mediated Regulation of Cinnamoyl Putrescine Biosynthesis in Cell Suspension Cultures ofNicotiana tabacum

K.-H. Knobloch; J. Berlin

5
claims
10
verbatim quotes
42
citations
1
research areas
—
Not open access

Abstract

The accumulation of cinnamoyl putrescines by cell suspension cultures of NICOTIANA TABACUM was enhanced manifold by phosphate limitation of the culture medium while growth was reduced under such conditions. The enhanced product formation was preceded by a large increase and subsequent decline of phenylalanine ammonia lyase activity and a smaller increase of the activity of ornithine decarboxylase. Phosphate concentrations commonly used in cell culture media suppressed the product accumulation.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

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 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Phosphate limitation greatly enhanced cinnamoyl putrescine accumulation in tobacco cell cultures.

Taxon
NICOTIANA TABACUMNicotiana tabacume0
Treatment
phosphate limitatione0
Outcome
accumulation of cinnamoyl putrescinese0
Direction
enhancede0

Not reportedComparator

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The accumulation of cinnamoyl putrescines by cell suspension cultures of NICOTIANA TABACUM was enhanced manifold by phosphate limitation of the culture medium”

✓ located verbatim in the source · abstract, characters 0–158 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Phosphate limitation reduced tobacco cell culture growth.

Taxon
NICOTIANA TABACUMNicotiana tabacumt0
Treatment
phosphate limitatione1
Outcome
growthe0
Direction
reducede0

Not reportedComparator

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“while growth was reduced under such conditions.”

✓ located verbatim in the source · abstract, characters 159–206 · show in text ↑
e1

“The accumulation of cinnamoyl putrescines by cell suspension cultures of NICOTIANA TABACUM was enhanced manifold by phosphate limitation of the culture medium while growth was reduced under such conditions.”

✓ located verbatim in the source · abstract, characters 0–206 · show in text ↑
t0

“Nicotiana tabacum”

✓ located verbatim in the source · title, characters 97–114 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Enhanced product formation was preceded by a large rise and later decline in phenylalanine ammonia lyase activity.

Taxon
NICOTIANA TABACUMNicotiana tabacumt0
Gene
phenylalanine ammonia lyasee0
Outcome
phenylalanine ammonia lyase activitye0
Direction
increase and subsequent declinee0

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“The enhanced product formation was preceded by a large increase and subsequent decline of phenylalanine ammonia lyase activity”

✓ located verbatim in the source · abstract, characters 207–333 · show in text ↑
t0

“Nicotiana tabacum”

✓ located verbatim in the source · title, characters 97–114 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Enhanced product formation was preceded by a smaller increase in ornithine decarboxylase activity.

Taxon
NICOTIANA TABACUMNicotiana tabacumt0
Gene
ornithine decarboxylasee0
Outcome
activity of ornithine decarboxylasee0
Direction
increasee0

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“a smaller increase of the activity of ornithine decarboxylase.”

✓ located verbatim in the source · abstract, characters 338–400 · show in text ↑
t0

“Nicotiana tabacum”

✓ located verbatim in the source · title, characters 97–114 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Phosphate concentrations commonly used in cell culture media suppressed product accumulation.

Taxon
NICOTIANA TABACUMNicotiana tabacumt0
Treatment
Phosphate concentrations commonly used in cell culture mediae0
Outcome
product accumulatione0
Direction
suppressede0

Not reportedComparator

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“Phosphate concentrations commonly used in cell culture media suppressed the product accumulation.”

✓ located verbatim in the source · abstract, characters 401–498 · show in text ↑
t0

“Nicotiana tabacum”

✓ located verbatim in the source · title, characters 97–114 · show in text ↑

phosphorus · molecular: metabolites · Nicotiana tabacum (tobacco)Positive and negative results

13 papers: 9 positive, 4 negative or no effect

3 papers in the same direction as this paper · 9 in the opposite direction

  1. positive
  2. positive
  3. positive

9 papers more in this group

See all 13 papers →

in vitro · molecular: metabolites · Nicotiana tabacum (tobacco)Positive and negative results

16 papers: 10 positive, 6 negative or no effect

5 papers in the same direction as this paper · 10 in the opposite direction

  1. positive
  2. positive
  3. positive

12 papers more in this group

See all 16 papers →

phosphorus · growth · Nicotiana tabacum (tobacco)Positive and negative results

20 papers: 17 positive, 3 negative or no effect

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

This paper is about lacking the nutrient, so it counts the other way round here.

  1. negative
  2. no effect
  3. negative

16 papers more in this group

See all 20 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.