Paper · 2005 · DOAJ (DOAJ: Directory of Open Access Journals)

Agrobacterium-mediated transformation of modified antifreeze protein gene in strawberry

Srisulak Dheeranupattana; Saranyu Khammuang

5
claims
10
verbatim quotes
9
citations
2
research areas
✓
Open access · cc-by-sa

Abstract

The optimum condition for shoot regeneration from leaf explants of strawberry cultivar Tiogar was investigated. It was found that the best regeneration condition was MS medium containing N6-Benzyladenine (BA) and 2,4-Dichlorophenoxy acetic acid (2,4-D) at concentrations of 1 mg.l-1 and 0.2 mg.l-1, respectively. Antibiotics sensitivity test found that shoot regeneration from leaf explant was inhibited more than 90% at the concentration of kanamycin (Km) as low as 5 mg.l-1. The modified gene encoding antifreeze protein isoform HPLC 6 was successfully constructed using codons which were optimally expressed in the strawberry plant. The antifreeze protein genes, naturally in plasmid pSW1 and modified in plasmid BB, were transformed to strawberry leaf explants by Agrobacterium tumefaciens LBA 4404. The strawberry plants, transformed with both AFP genes, were able to root in MS media containing 50 mg.l-1 Km, while no roots grew from nontransformed plant in this condition. Polymerase chain reaction indicated that the transgenes were integrated in the genome of transformants.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-sa. Read at the source ↗

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Claims 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

MS medium with 1 mg/l BA and 0.2 mg/l 2,4-D was the best condition for shoot regeneration from strawberry leaf explants.

Taxon
strawberryFragaria ×ananassae1
Material
Tiogare1
Organ / stage
leaf explantse1
Treatment
MS medium containing N6-Benzyladenine (BA) and 2,4-Dichlorophenoxy acetic acid (2,4-D) at concentrations of 1 mg.l-1 and 0.2 mg.l-1e2
Outcome
shoot regeneratione1
Direction
beste2
Value
1 mg.l-1 and 0.2 mg.l-1e2

Not reportedComparator

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“shoot regeneration from leaf explants of strawberry cultivar Tiogar”

✓ located verbatim in the source · abstract, characters 26–93 · show in text ↑
e2

“the best regeneration condition was MS medium containing N6-Benzyladenine (BA) and 2,4-Dichlorophenoxy acetic acid (2,4-D) at concentrations of 1 mg.l-1 and 0.2 mg.l-1”

✓ located verbatim in the source · abstract, characters 130–297 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Kanamycin at 5 mg/l inhibited shoot regeneration from strawberry leaf explants by more than 90%.

Taxon
strawberryFragaria ×ananassae1
Treatment
kanamycin (Km)e3
Outcome
shoot regeneration from leaf explante3
Direction
inhibitede3
Value
more than 90%e3

Not reportedComparator

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“shoot regeneration from leaf explants of strawberry cultivar Tiogar”

✓ located verbatim in the source · abstract, characters 26–93 · show in text ↑
e3

“shoot regeneration from leaf explant was inhibited more than 90% at the concentration of kanamycin (Km) as low as 5 mg.l-1”

✓ located verbatim in the source · abstract, characters 353–475 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Transformed strawberry plants rooted on 50 mg/l Km, whereas nontransformed plants formed no roots.

Taxon
strawberryFragaria ×ananassae1
Treatment
50 mg.l-1 Kme4
Gene
AFP genese4
Outcome
rootse4
Direction
able to roote4
Comparator
nontransformed plante4

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“shoot regeneration from leaf explants of strawberry cultivar Tiogar”

✓ located verbatim in the source · abstract, characters 26–93 · show in text ↑
e4

“The strawberry plants, transformed with both AFP genes, were able to root in MS media containing 50 mg.l-1 Km, while no roots grew from nontransformed plant in this condition.”

✓ located verbatim in the source · abstract, characters 804–979 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

PCR indicated that the transgenes were integrated into the genome of the strawberry transformants.

Taxon
strawberryFragaria ×ananassae1
Outcome
the transgenes were integrated in the genomee5

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“shoot regeneration from leaf explants of strawberry cultivar Tiogar”

✓ located verbatim in the source · abstract, characters 26–93 · show in text ↑
e5

“Polymerase chain reaction indicated that the transgenes were integrated in the genome of transformants.”

✓ located verbatim in the source · abstract, characters 980–1083 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The modified antifreeze protein gene (isoform HPLC 6) with strawberry-optimized codons was successfully constructed.

Taxon
strawberryFragaria ×ananassae1
Gene
antifreeze protein isoform HPLC 6e6
Outcome
modified gene encoding antifreeze protein isoform HPLC 6e6
Direction
successfully constructede6
Qualifier
codons which were optimally expressed in the strawberry plante6

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

Fragaria x ananassa
Fragaria ×ananassa · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“shoot regeneration from leaf explants of strawberry cultivar Tiogar”

✓ located verbatim in the source · abstract, characters 26–93 · show in text ↑
e6

“The modified gene encoding antifreeze protein isoform HPLC 6 was successfully constructed using codons which were optimally expressed in the strawberry plant.”

✓ located verbatim in the source · abstract, characters 477–635 · show in text ↑

N-benzyladenine · growth · Fragaria x ananassa (strawberry)Results differ

56 papers: 52 positive, 4 negative or no effect

51 papers in the same direction as this paper · 4 in the opposite direction

  1. negative
  2. no effect
  3. negative

52 papers more in this group

See all 56 papers →

2,4-D · growth · Fragaria x ananassa (strawberry)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 →

acetic acid · growth · Fragaria x ananassa (strawberry)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

in vitro · growth · Fragaria x ananassa (strawberry)Positive and negative results

86 papers: 76 positive, 10 negative or no effect

75 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. negative
  3. no effect

82 papers more in this group

See all 86 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.