Abstract
Abstract At low intensity, certain stress conditions may have a positive effect on growth and development of plants (eustress). Growth stimulation of barley plants after gamma irradiation of seeds in low doses was observed as an increase in root and shoot lengths. Hydrogen peroxide concentrations in shoots of irradiated plants were significantly higher than in control, while the opposite effect was observed in the roots. To elucidate the molecular basis of growth stimulation after gamma irradiation of barley seeds, we performed the transcriptomic analysis of barley embryos at different stages of seed germination. The transcriptomic data were correlated with morphological parameters and the hydrogen peroxide levels in irradiated and control plants. These data indicate that the growth stimulation by low‐dose irradiation involves the transcriptional control of genes related to phytohormones, antioxidant system, late embryogenesis abundant proteins and cell wall components, with possible involvement of jasmonate and ABA signalling. Gamma irradiation of seeds at dose 100 Gy caused significant growth inhibition and promoted expression changes in transcripts related to cell cycle arrest, DNA damage repair and antioxidant system.
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Claims 7
Claim · model-written summary
Low-dose seed irradiation increased barley root length.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- gamma irradiation of seeds in low dosese0
- Outcome
- roote0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Growth stimulation of barley plants after gamma irradiation of seeds in low doses was observed as an increase in root and shoot lengths”
Claim · model-written summary
Low-dose seed irradiation increased barley shoot length.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- gamma irradiation of seeds in low dosese0
- Outcome
- shoot lengthse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth stimulation of barley plants after gamma irradiation of seeds in low doses was observed as an increase in root and shoot lengths”
Claim · model-written summary
Irradiated barley shoots had higher hydrogen peroxide concentration than controls.
- Taxon
- barleyHordeum vulgaret0
- Organ / stage
- shootse0
- Treatment
- irradiated plantse0
- Outcome
- Hydrogen peroxide concentrationse0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hydrogen peroxide concentrations in shoots of irradiated plants were significantly higher than in control”
t0“barley”
Claim · model-written summary
Irradiated barley roots had lower hydrogen peroxide concentration than controls.
- Taxon
- barleyHordeum vulgaret0
- Organ / stage
- rootse0
- Treatment
- irradiatede1
- Outcome
- Hydrogen peroxide concentrationse1
- Direction
- lowerinferrede2
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while the opposite effect was observed in the roots”
e1“Hydrogen peroxide concentrations in shoots of irradiated plants were significantly higher than in control”
e2“low‐dose”
t0“barley”
Claim · model-written summary
Low-dose irradiation growth stimulation involved transcriptional control of hormone, antioxidant, LEA and cell-wall genes.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- low‐dose irradiatione0
- Outcome
- growth stimulatione0
- Qualifier
- transcriptional control of genes related to phytohormones, antioxidant system, late embryogenesis abundant proteins and cell wall componentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth stimulation by low‐dose irradiation involves the transcriptional control of genes related to phytohormones, antioxidant system, late embryogenesis abundant proteins and cell wall components, with possible involvement of jasmonate and ABA signalling”
t0“barley”
Claim · model-written summary
Seed irradiation at 100 Gy significantly inhibited barley growth.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Gamma irradiation of seeds at dose 100 Gye0
- Outcome
- growth inhibitione0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gamma irradiation of seeds at dose 100 Gy caused significant growth inhibition”
t0“barley”
Claim · model-written summary
Seed irradiation at 100 Gy changed transcripts for cell-cycle arrest, DNA repair and antioxidant systems.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Gamma irradiation of seeds at dose 100 Gye0
- Outcome
- expression changes in transcripts related to cell cycle arrest, DNA damage repair and antioxidant systeme0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gamma irradiation of seeds at dose 100 Gy caused significant growth inhibition and promoted expression changes in transcripts related to cell cycle arrest, DNA damage repair and antioxidant system”
t0“barley”
The same questions in other papers
radiation · growth · Hordeum vulgare (barley)Results differ
12 papers in the same direction as this paper · 22 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
32 papers more in this group
See all 36 papers →radiation · disease · Hordeum vulgare (barley)Positive and negative results
2 in the opposite direction
- positive
- 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.