Abstract
The effects of treatment with ethylene (0.01–100 μl/l) on ABA and polyamine contents and treatment with ABA on ethylene synthesis, polyamines content, and the resistance to UV-B radiation of two-week-old Arabidopsis thaliana (L.) Heynh, Columbia ecotype plants grown u⊋er sterile conditions were studied. Ethylene stimulated the accumulation of polyamines only at concentrations of 0.1–10 μl/l, which could activate ABA synthesis. Treatment with ABA (50–5000 μM, 1 μl per plant) decreased the UV-B-induced ethylene synthesis and a spermine and spermidine loss, increasing the content of putrescine, the precursor of these polyamines. ABA inhibited fresh weight accumulation in irradiated and nonirradiated plants but prevented them from severe damage and death at the high (18 kJ/m 2 ) and lethal (27 kJ/m 2 ) UV-B dose, respectively. The data obtained demonstrated a mutual regulation of ethylene and ABA syntheses and the participation of these hormones in the control of the polyamine level during adaptation of A. thaliana to UV-B stress.
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Claims 8
Claim · model-written summary
Ethylene at 0.1–10 μl/l stimulated polyamine accumulation.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Treatment
- Ethylenee0
- Outcome
- accumulation of polyaminese0
- Direction
- stimulatede0
- Qualifier
- 0.1–10 μl/le0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene stimulated the accumulation of polyamines only at concentrations of 0.1–10 μl/l”
t0“Arabidopsis thaliana”
Claim · model-written summary
Ethylene at effective concentrations could activate ABA synthesis.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Ethylenet0
- Outcome
- ABA synthesise0
- Direction
- activatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which could activate ABA synthesis”
t0“Interaction between ethylene and ABA in the regulation of polyamine level in Arabidopsis thaliana during UV-B stress”
Claim · model-written summary
ABA decreased UV-B induced ethylene synthesis.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- ABA (50–5000 μM, 1 μl per plant)e0
- Outcome
- UV-B-induced ethylene synthesise0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with ABA (50–5000 μM, 1 μl per plant) decreased the UV-B-induced ethylene synthesis”
t0“Arabidopsis thaliana”
Claim · model-written summary
ABA decreased spermine and spermidine loss.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- ABA (50–5000 μM, 1 μl per plant)e0
- Outcome
- spermine and spermidine losse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with ABA (50–5000 μM, 1 μl per plant) decreased the UV-B-induced ethylene synthesis and a spermine and spermidine loss”
t0“Arabidopsis thaliana”
Claim · model-written summary
ABA increased putrescine content.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- ABAe1
- Outcome
- content of putrescinee0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the content of putrescine”
t0“Arabidopsis thaliana”
e1“Treatment with ABA (50–5000 μM, 1 μl per plant)”
Claim · model-written summary
ABA inhibited fresh weight accumulation in irradiated and nonirradiated plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- ABAe0
- Outcome
- fresh weight accumulatione0
- Direction
- inhibitede0
- Qualifier
- irradiated and nonirradiated plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA inhibited fresh weight accumulation in irradiated and nonirradiated plants”
t0“Arabidopsis thaliana”
Claim · model-written summary
ABA prevented severe damage at a high UV-B dose.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- ABAt0
- Outcome
- severe damagee0
- Direction
- preventede0
- Qualifier
- high (18 kJ/m 2 )e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“prevented them from severe damage and death at the high (18 kJ/m 2 ) and lethal (27 kJ/m 2 ) UV-B dose, respectively”
t0“ABA in the regulation of polyamine level in Arabidopsis thaliana during UV-B stress”
Claim · model-written summary
ABA prevented death at a lethal UV-B dose.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- ABAt0
- Outcome
- deathe0
- Direction
- preventede0
- Qualifier
- lethal (27 kJ/m 2 )e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“prevented them from severe damage and death at the high (18 kJ/m 2 ) and lethal (27 kJ/m 2 ) UV-B dose, respectively”
t0“ABA in the regulation of polyamine level in Arabidopsis thaliana during UV-B stress”
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