Paper · 1992 · The Plant Journal

Characterization of a shoot‐specific, GA3‐ and ABA‐Regulated gene from tomato

Lifang Shi; Robert T. Gast; Manjula Gopalraj; et al.

13
claims
25
verbatim quotes
181
citations
2
research areas
—
Not open access

Abstract

A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3 has been characterized. An increase in GAST1 RNA levels is detectable 2 h after treatment and levels continue to increase for at least an additional 10 h. Between 12 and 24 h following treatment, the amount of GAST1 RNA begins to decline and at 48 h the level is nearly equivalent to that of water-treated control plants. Nuclear runoff analysis indicates that 8 h after treatment with GA3, transcription of the GAST1 gene has increased only threefold, suggesting that GA acts both transcriptionally and post-transcriptionally. ABA partially inhibits the GA-mediated increase in GAST1 RNA abundance while ethephon, kinetin, and 2,4-D have little effect. GAST1 RNA is detectable in untreated leaves, stems, petioles and flowers, but not in roots. The GAST1 gene encodes a 0.7 kb transcript. The sequence of the GAST1 cDNA and genomic clones indicates that the gene is interrupted by three introns and potentially encodes a 112 amino acid protein of unknown function.

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 13

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

GA3 spraying increased GAST1 RNA abundance more than 20-fold in shoots of the gib1 mutant

Material
gib1e1
Organ / stage
shootse1
Treatment
spraying with GA3e1
Gene
GAST1e1
Outcome
abundancee1
Direction
increasese1
Value
> 20-folde1

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

GAST1 RNA levels increase is detectable 2 h after GA3 spraying

Treatment
spraying with GA3e1
Gene
GAST1e2
Outcome
GAST1 RNA levelse2
Direction
increasee2
Value
2 he2
Qualifier
detectable 2 h after treatmente2

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e2

“An increase in GAST1 RNA levels is detectable 2 h after treatment and levels continue to increase for at least an additional 10 h”

✓ located verbatim in the source · abstract, characters 198–327 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

GAST1 RNA levels continue to increase for at least 10 h after GA3 spraying

Treatment
spraying with GA3e1
Gene
GAST1e2
Outcome
GAST1 RNA levelse2
Direction
continue to increasee2
Value
at least an additional 10 he2

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e2

“An increase in GAST1 RNA levels is detectable 2 h after treatment and levels continue to increase for at least an additional 10 h”

✓ located verbatim in the source · abstract, characters 198–327 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

GAST1 RNA amount begins to decline between 12 and 24 h after GA3 spraying

Treatment
spraying with GA3e1
Gene
GAST1e3
Outcome
amount of GAST1 RNAe3
Direction
declinee3
Qualifier
Between 12 and 24 h following treatmente3

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e3

“Between 12 and 24 h following treatment, the amount of GAST1 RNA begins to decline and at 48 h the level is nearly equivalent to that of water-treated control plants”

✓ located verbatim in the source · abstract, characters 329–494 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

At 48 h after GA3 spraying the GAST1 RNA level is nearly equivalent to water-treated control plants

Treatment
spraying with GA3e1
Gene
GAST1e3
Outcome
levele3
Direction
nearly equivalente3
Qualifier
at 48 he3
Comparator
water-treated control plantse3

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e3

“Between 12 and 24 h following treatment, the amount of GAST1 RNA begins to decline and at 48 h the level is nearly equivalent to that of water-treated control plants”

✓ located verbatim in the source · abstract, characters 329–494 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

GA3 treatment increased GAST1 gene transcription only threefold at 8 h

Treatment
treatment with GA3e4
Gene
GAST1e4
Outcome
transcription of the GAST1 genee4
Direction
increasede4
Value
only threefolde4

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e4

“Nuclear runoff analysis indicates that 8 h after treatment with GA3, transcription of the GAST1 gene has increased only threefold, suggesting that GA acts both transcriptionally and post-transcriptionally”

✓ located verbatim in the source · abstract, characters 496–700 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The authors suggest GA acts both transcriptionally and post-transcriptionally on GAST1

Treatment
GA3e4
Outcome
transcription of the GAST1 genee4
Qualifier
GA acts both transcriptionally and post-transcriptionallye4

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e4

“Nuclear runoff analysis indicates that 8 h after treatment with GA3, transcription of the GAST1 gene has increased only threefold, suggesting that GA acts both transcriptionally and post-transcriptionally”

✓ located verbatim in the source · abstract, characters 496–700 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

ABA partially inhibits the GA-mediated increase in GAST1 RNA abundance

Treatment
ABAe5
Gene
GAST1e5
Outcome
GAST1 RNA abundancee5
Direction
partially inhibitse5
Comparator
GA-mediated increase in GAST1 RNA abundancee5

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e5

“ABA partially inhibits the GA-mediated increase in GAST1 RNA abundance while ethephon, kinetin, and 2,4-D have little effect”

✓ located verbatim in the source · abstract, characters 702–826 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Ethephon, kinetin and 2,4-D have little effect on GAST1 RNA abundance

Treatment
ethephon, kinetin, and 2,4-De5
Gene
GAST1e5
Outcome
GAST1 RNA abundancee5
Direction
little effecte5

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e5

“ABA partially inhibits the GA-mediated increase in GAST1 RNA abundance while ethephon, kinetin, and 2,4-D have little effect”

✓ located verbatim in the source · abstract, characters 702–826 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

GAST1 RNA is detectable in untreated leaves, stems, petioles and flowers but not in roots

Organ / stage
untreated leaves, stems, petioles and flowerse6
Gene
GAST1e6
Outcome
GAST1 RNAe6
Qualifier
but not in rootse6

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e6

“GAST1 RNA is detectable in untreated leaves, stems, petioles and flowers, but not in roots”

✓ located verbatim in the source · abstract, characters 828–918 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The GAST1 gene encodes a 0.7 kb transcript

Gene
GAST1e7
Outcome
transcripte7
Value
0.7 kbe7

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e7

“The GAST1 gene encodes a 0.7 kb transcript”

✓ located verbatim in the source · abstract, characters 920–962 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The GAST1 gene is interrupted by three introns

Gene
GAST1e0
Outcome
intronse0
Value
threee0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e0

“The sequence of the GAST1 cDNA and genomic clones indicates that the gene is interrupted by three introns and potentially encodes a 112 amino acid protein of unknown function”

✓ located verbatim in the source · abstract, characters 964–1138 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

GAST1 potentially encodes a 112 amino acid protein of unknown function

Gene
GAST1e0
Outcome
proteine0
Value
112 amino acide0
Qualifier
of unknown functione0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“A tomato (Lycopersicon esculentum) gene (GAST1) that encodes an RNA whose abundance increases > 20-fold in shoots of the GA-deficient gib1 mutant following spraying with GA3”

✓ located verbatim in the source · abstract, characters 0–173 · show in text ↑
e0

“The sequence of the GAST1 cDNA and genomic clones indicates that the gene is interrupted by three introns and potentially encodes a 112 amino acid protein of unknown function”

✓ located verbatim in the source · abstract, characters 964–1138 · show in text ↑

2,4-D · pest · Solanum lycopersicum (tomato)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. positive
See all 2 papers →

(2-chloroethyl)phosphonic acid · pest · Solanum lycopersicum (tomato)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

3 in the opposite direction

  1. positive
  2. positive
  3. positive
See all 4 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.