Abstract
The water saturated Arabidopsis seeds were irradiated with protons in air. The ion energy is from 1.1MeV to 6.5MeV. According to TRIM simulation, the damaged region of the seed induced by the incident ions is near the surface region of the embryo, half of the embryo and the whole embryo, respectively. The protons with high energy can damage the shoot apical meristem(SAM) in the embryo while the protons with low energy cannot. The ion fluence used in this experiment was in the range of 4×109 to 1×1014ions/cm2. The experimental results showed that both the germination and survival rates decrease while increasing ion fluence, and the fluence-response curve for different damaged region of the embryo has different characters. Besides SAM, which is generally considered as the main radiobiological target, the existence of a secondary target besides SAM is proposed in this paper.
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Claims 7
Claim · model-written summary
TRIM simulation placed ion damage in the embryo surface, half embryo or whole embryo according to ion energy.
- Taxon
- Arabidopsis
Arabidopsist0 - Organ / stage
- embryoe0
- Outcome
- damaged region of the seede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“According to TRIM simulation, the damaged region of the seed induced by the incident ions is near the surface region of the embryo, half of the embryo and the whole embryo, respectively”
t0“Arabidopsis seed”
Claim · model-written summary
High-energy protons can damage the shoot apical meristem.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- protons with high energye0
- Outcome
- damage the shoot apical meristem(SAM)e0
- Comparator
- protons with low energye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The protons with high energy can damage the shoot apical meristem(SAM) in the embryo while the protons with low energy cannot”
t0“Arabidopsis seed”
Claim · model-written summary
Low-energy protons did not damage the shoot apical meristem.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- protons with low energye0
- Outcome
- damage the shoot apical meristem(SAM)e0
- Comparator
- protons with high energye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The protons with high energy can damage the shoot apical meristem(SAM) in the embryo while the protons with low energy cannot”
t0“Arabidopsis seed”
Claim · model-written summary
Germination rate decreased as ion fluence increased.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- ion fluencee0
- Outcome
- germinatione0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the germination and survival rates decrease while increasing ion fluence”
t0“Arabidopsis seed”
Claim · model-written summary
Survival rate decreased as ion fluence increased.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- ion fluencee0
- Outcome
- survival ratese0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the germination and survival rates decrease while increasing ion fluence”
t0“Arabidopsis seed”
Claim · model-written summary
Fluence-response curves differed among embryo damage regions.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- embryoe0
- Outcome
- fluence-response curvee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the fluence-response curve for different damaged region of the embryo has different characters”
t0“Arabidopsis seed”
Claim · model-written summary
The authors proposed a second radiobiological target besides the shoot apical meristem.
- Taxon
- ArabidopsisArabidopsist0
- Outcome
- secondary targete0
- Qualifier
- besides SAMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the existence of a secondary target besides SAM is proposed in this paper”
t0“Arabidopsis seed”