Abstract
Abstract Priming treatment of sunflower (Helianthus annuus L., cv Briosol) seeds for 7 days at 15 ° C with a polyethylene glycol solution at −2.0 MPa strongly improved their subsequent germination at 15 ° C on water. This stimulatory effect of priming remained after drying back the seeds at 20 ° C for 3 days. Malondialdehyde (MDA) and activities of superoxide dismutase (SOD), catalase (CAT) and glutathione reductase (GR) were measured in control unprimed seeds, primed seeds, seeds primed then dried, and after 3 and 6 hours of imbibition of controland dried primed seeds in order to determine whether the cell antioxidant systems were involved in the beneficial effect of priming. The osmotreatment resulted in a strong increase in SOD and CAT activities but did not markedly affect MDA and GR activity. Following the 3 days of drying, MDA increased and the enzyme activities became similar to those measured in dry unprimed seeds, although the stimulatory effect of priming on germination remained. Imbibition of control dry seeds was associated with an increase in MDA and a decrease in CAT and GR activities, whereas reimbibition of dried primed seeds resulted in a decrease in MDA and an increase in SOD, CAT and GR activities. Isoform patterns on native gels showed no difference between treated (priming with or without subsequent drying) and control seeds for SOD (7 isoforms) and GR (5 isoforms), but the osmotreatment did induce a second isoform of CAT. The results obtained indicate that the CAT isoform pattern might be used as an indicato of the priming treatment that promotes germination. Involvement of theantioxidant systems in seed vigour is discussed
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Claims 13
Claim · model-written summary
Priming improved subsequent germination at 15 ° C.
- Taxon
- sunflower
Helianthus annuuse0 - Material
- cv Briosole0
- Treatment
- Priming treatmente0
- Outcome
- subsequent germination at 15 ° Ce0
- Direction
- strongly improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Priming treatment of sunflower (Helianthus annuus L., cv Briosol) seeds for 7 days at 15 ° C with a polyethylene glycol solution at −2.0 MPa strongly improved their subsequent germination at 15 ° C on water”
Claim · model-written summary
The germination benefit remained after drying seeds.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- stimulatory effect of priminge0
- Qualifier
- drying back the seeds at 20 ° C for 3 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This stimulatory effect of priming remained after drying back the seeds at 20 ° C for 3 days”
t0“sunflower”
Claim · model-written summary
Osmotreatment strongly increased SOD and CAT activity.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- osmotreatmente0
- Outcome
- SOD and CAT activitiese0
- Direction
- strong increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The osmotreatment resulted in a strong increase in SOD and CAT activities”
t0“sunflower”
Claim · model-written summary
Osmotreatment did not markedly affect MDA and GR activity.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- MDA and GR activitye0
- Direction
- did not markedly affecte0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“did not markedly affect MDA and GR activity”
t0“sunflower”
Claim · model-written summary
Drying raised MDA.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- MDAe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Following the 3 days of drying, MDA increased”
t0“sunflower”
Claim · model-written summary
After drying, enzyme activities resembled dry unprimed seeds.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- enzyme activitiese0
- Comparator
- dry unprimed seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the enzyme activities became similar to those measured in dry unprimed seeds”
t0“sunflower”
Claim · model-written summary
Imbibition of dry control seeds increased MDA.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- MDAe0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Imbibition of control dry seeds was associated with an increase in MDA”
t0“sunflower”
Claim · model-written summary
Imbibition of dry controls decreased CAT and GR activities.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- CAT and GR activitiese0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a decrease in CAT and GR activities”
t0“sunflower”
Claim · model-written summary
Reimbibition of dried primed seeds decreased MDA.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- MDAe0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reimbibition of dried primed seeds resulted in a decrease in MDA”
t0“sunflower”
Claim · model-written summary
Reimbibition of dried primed seeds increased SOD, CAT and GR activities.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- SOD, CAT and GR activitiese0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase in SOD, CAT and GR activities”
t0“sunflower”
Claim · model-written summary
Priming did not change SOD and GR isoform patterns.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- Isoform patternse0
- Direction
- no differencee0
- Comparator
- control seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isoform patterns on native gels showed no difference between treated (priming with or without subsequent drying) and control seeds for SOD (7 isoforms) and GR (5 isoforms)”
t0“sunflower”
Claim · model-written summary
Osmotreatment induced a second CAT isoform.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- osmotreatmente0
- Outcome
- a second isoform of CATe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the osmotreatment did induce a second isoform of CAT”
t0“sunflower”
Claim · model-written summary
The CAT isoform pattern may indicate germination-promoting priming.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- CAT isoform patterne0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the CAT isoform pattern might be used as an indicato of the priming treatment that promotes germination”
t0“sunflower”
The same questions in other papers
seed treatment · growth · Helianthus annuus (common sunflower)Positive and negative results
48 papers in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
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See all 55 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.