Abstract
Both plant senescence and plant response to ionizing radiation involve changes in gene expression and epigenetic profiles, that rely on the formation of reactive oxygen species. However, how the developmental stage of a plant affects its response to ionizing radiation has not been extensively studied. In this study, our experiments showed that exposure to low (10 Gy) and high (100 Gy) doses of ionizing radiation causes developmental delays in plants that may result in reduced biomass or even death of the organism. In particular, 20-day-old plants, which are in the process of transitioning to reproductive growth, showed a distinct response to irradiation compared to 10- or 30-day-old irradiated plants that affects the expression of DNA repair genes. Specifically, we found that the expression of mismatch repair genes was increased in 20-day-old plants, while RAD51 was increased in 10- and 30-day-old plants. Furthermore, we found increased expression of MET1, CMT3 and SUVH5 epigenetic regulators that paralleled decreased ONSEN transcript levels in 20-day-old irradiated plants. These findings suggest that plants exposed during early reproductive growth exhibit a tighter control over genome stability in response to ionizing irradiation compared to plants irradiated at other developmental stages.
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Claims 10
Claim · model-written summary
Ionizing radiation caused developmental delays.
- Taxon
- Arabidopsis
Arabidopsist0 - Treatment
- ionizing radiatione0
- Outcome
- developmental delayse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposure to low (10 Gy) and high (100 Gy) doses of ionizing radiation causes developmental delays in plants”
t0“Arabidopsis”
Claim · model-written summary
Ionizing radiation may reduce biomass or kill plants.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- ionizing radiationt0
- Outcome
- reduced biomass or even death of the organisme0
- Direction
- reducede0
- Qualifier
- may resulte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“developmental delays in plants that may result in reduced biomass or even death of the organism”
t0“Arabidopsis Plants Exposed to Ionizing Radiation”
Claim · model-written summary
Twenty day old irradiated plants showed a distinct DNA repair gene response from 10 and 30 day old plants.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- 20-day-old plantse0
- Outcome
- expression of DNA repair genese0
- Comparator
- 10- or 30-day-old irradiated plantse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“20-day-old plants, which are in the process of transitioning to reproductive growth, showed a distinct response to irradiation compared to 10- or 30-day-old irradiated plants that affects the expression of DNA repair genes”
t0“Arabidopsis”
Claim · model-written summary
Mismatch repair genes increased in irradiated 20 day old plants.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- 20-day-old plantse0
- Gene
- mismatch repair genese0
- Outcome
- expressione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expression of mismatch repair genes was increased in 20-day-old plants”
t0“Arabidopsis”
Claim · model-written summary
RAD51 expression increased in irradiated 10 and 30 day old plants.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- 10- and 30-day-old plantse0
- Gene
- RAD51e0
- Outcome
- RAD51e0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RAD51 was increased in 10- and 30-day-old plants”
t0“Arabidopsis”
Claim · model-written summary
MET1 expression increased in irradiated 20 day old plants.
- Taxon
- ArabidopsisArabidopsist0
- Gene
- MET1e0
- Outcome
- expressione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased expression of MET1, CMT3 and SUVH5 epigenetic regulators”
t0“Arabidopsis”
Claim · model-written summary
CMT3 expression increased in irradiated 20 day old plants.
- Taxon
- ArabidopsisArabidopsist0
- Gene
- CMT3e0
- Outcome
- expressione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased expression of MET1, CMT3 and SUVH5 epigenetic regulators”
t0“Arabidopsis”
Claim · model-written summary
SUVH5 expression increased in irradiated 20 day old plants.
- Taxon
- ArabidopsisArabidopsist0
- Gene
- SUVH5e0
- Outcome
- expressione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased expression of MET1, CMT3 and SUVH5 epigenetic regulators”
t0“Arabidopsis”
Claim · model-written summary
ONSEN transcript levels decreased in irradiated 20 day old plants.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- 20-day-old irradiated plantse0
- Gene
- ONSENe0
- Outcome
- transcript levelse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased ONSEN transcript levels in 20-day-old irradiated plants”
t0“Arabidopsis”
Claim · model-written summary
Authors infer tighter genome stability control during early reproductive growth after irradiation.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- early reproductive growthe0
- Outcome
- tighter control over genome stabilitye0
- Comparator
- plants irradiated at other developmental stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants exposed during early reproductive growth exhibit a tighter control over genome stability in response to ionizing irradiation compared to plants irradiated at other developmental stages”
t0“Arabidopsis”
The same questions in other papers
radiation · growth · ArabidopsisPositive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
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