Abstract
The results revealed to the increase of the specific activity of dihydrofolate reductase in stem' callus of sunflower, Heliathus annuus L. exposed to UV(360 nm.) for 5,10 and 15min. with the growth period. The total content of folate increased substantially, whereas 20min decreased activity of dihydrofolate reductase and folate content extracted from callus of different age. The inhibitory effect of folate analogoues aminopterin and trimethoprim, In Vivo and In Vitro on dihydrofolate reductase and folate content of sunflower callus exposed or nonexposed to UV was tested. The results revealed that the exposure of callus for five min. exhibited high level of resistance to trimethoprim and aminopterin. The specific activity of dihydrofolate reductase and the total content of folate partially reserved as a result of radiation compared with non-radiated callus
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Claims 7
Claim · model-written summary
UV exposure for 5, 10 and 15 minutes increased dihydrofolate reductase activity with growth period.
- Taxon
- sunflower
Helianthus annuuse0t0 - Organ / stage
- stem' calluse0
- Treatment
- UV(360 nm.) for 5,10 and 15min.e0
- Gene
- dihydrofolate reductasee0
- Outcome
- specific activity of dihydrofolate reductasee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase of the specific activity of dihydrofolate reductase in stem' callus of sunflower, Heliathus annuus L. exposed to UV(360 nm.) for 5,10 and 15min. with the growth period”
t0“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Folate content increased under the shorter UV exposures.
- Taxon
- sunflowerHelianthus annuuse0t0
- Outcome
- total content of folatee0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total content of folate increased substantially”
t0“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Twenty minutes of UV decreased dihydrofolate reductase activity.
- Taxon
- sunflowerHelianthus annuuse0t0
- Treatment
- 20mine0
- Gene
- dihydrofolate reductasee0
- Outcome
- activity of dihydrofolate reductasee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“20min decreased activity of dihydrofolate reductase and folate content extracted from callus of different age”
t0“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Twenty minutes of UV decreased folate content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“20min decreased activity of dihydrofolate reductase and folate content extracted from callus of different age”
t0“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Five minutes of UV gave callus high resistance to trimethoprim.
- Taxon
- sunflowerHelianthus annuuse0t0
- Treatment
- exposure of callus for five min.e0
- Outcome
- resistance to trimethoprime0
- Direction
- high levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposure of callus for five min. exhibited high level of resistance to trimethoprim and aminopterin”
t0“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Five minutes of UV gave callus high resistance to aminopterin.
- Taxon
- sunflowerHelianthus annuuse0t0
- Treatment
- exposure of callus for five min.e0
- Outcome
- resistance to trimethoprim and aminopterine0
- Direction
- high levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposure of callus for five min. exhibited high level of resistance to trimethoprim and aminopterin”
t0“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Radiation partially preserved dihydrofolate reductase activity and folate content relative to nonradiated callus.
- Taxon
- sunflowerHelianthus annuuse0t0
- Treatment
- radiatione0
- Outcome
- specific activity of dihydrofolate reductase and the total content of folatee0
- Direction
- partially reservede0
- Comparator
- non-radiated calluse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The specific activity of dihydrofolate reductase and the total content of folate partially reserved as a result of radiation compared with non-radiated callus”
t0“Sunflower (Helianthus annuus L.)”
The same questions in other papers
radiation · molecular: metabolites · Helianthus annuus (common sunflower)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
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.