Abstract
Plants strictly regulate the uptake and distribution of Zinc (Zn), which is essential for growth and development. Arabidopsis thaliana plant cadmium resistance 2 (AtPCR2), a protein containing a placenta-specific 8 domain (PLAC8), is specifically expressed in the vascular tissue and epidermis of roots and is thought to act as a Zn efflux transporter (Song et al. 2010). Proteins containing PLAC8 domain function as major organ size regulators in Solanum lycopersicum and Zea may, and putative metal ion transporters in Arabidopsis thaliana, Oryza sativa and Brassica juncea. But, there are no reports which showed that the protein containing PALC8 have the function both of seed size regulation and metal homeostasis.In our study, we found that plant cadmium resistance 1 (PCR1) influences on both Zn accumulation and grain weight in rice. The expression of OsPCR1 is elevated in developing seeds of introgression line for GW2, which encodes a protein known to regulate grain weight. Grain weight of OsPCR1 knockout and knockdown lines decreased than the wild type, while OsPCR1 overexpression lines produced heavier grains. Furthermore, the grains of OsPCR1 knockdown lines exhibited substantially higher Zn and lower Cd concentrations than the control. We identified some variation in the OsPCR1 amino acid sequence between the japonica and indica rice types using 15 different rice varieties. Japonica-type PCR1 had a shorter N-terminus than did PCR1 in the other rice types. Furthermore, japonica-type grains accumulated less Zn than did indica-type grains. Our study suggests that rice PCR1 maintains metal ion homeostasis and grain weight and might have been selected for during domestication.
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Claims 11
Claim · model-written summary
OsPCR1 expression was elevated in developing seeds of the GW2 introgression line.
- Taxon
- Rice
Oryza sativat0 - Material
- introgression line for GW2e0
- Organ / stage
- developing seedse0
- Gene
- OsPCR1e0
- Outcome
- expression of OsPCR1e0
- Direction
- elevatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of OsPCR1 is elevated in developing seeds of introgression line for GW2”
t0“Rice”
Claim · model-written summary
OsPCR1 knockout lines had lower grain weight than wild type.
- Taxon
- RiceOryza sativat0
- Treatment
- OsPCR1 knockoute0
- Gene
- OsPCR1e0
- Outcome
- Grain weighte0
- Direction
- decreasede0
- Comparator
- wild typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain weight of OsPCR1 knockout and knockdown lines decreased than the wild type”
t0“Rice”
Claim · model-written summary
OsPCR1 knockdown lines had lower grain weight than wild type.
- Taxon
- RiceOryza sativat0
- Treatment
- knockdown linese0
- Gene
- OsPCR1e0
- Outcome
- Grain weighte0
- Direction
- decreasede0
- Comparator
- wild typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain weight of OsPCR1 knockout and knockdown lines decreased than the wild type”
t0“Rice”
Claim · model-written summary
OsPCR1 overexpression lines produced heavier grains.
- Taxon
- RiceOryza sativat0
- Treatment
- OsPCR1 overexpressione0
- Gene
- OsPCR1e0
- Outcome
- grainse0
- Direction
- heaviere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsPCR1 overexpression lines produced heavier grains”
t0“Rice”
Claim · model-written summary
OsPCR1 knockdown grains had substantially higher Zn concentrations than control.
- Taxon
- RiceOryza sativat0
- Treatment
- OsPCR1 knockdowne0
- Gene
- OsPCR1e0
- Outcome
- Zne0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the grains of OsPCR1 knockdown lines exhibited substantially higher Zn and lower Cd concentrations than the control”
t0“Rice”
Claim · model-written summary
OsPCR1 knockdown grains had lower Cd concentrations than control.
- Taxon
- RiceOryza sativat0
- Treatment
- OsPCR1 knockdowne0
- Gene
- OsPCR1e0
- Outcome
- Cd concentrationse0
- Direction
- lowere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the grains of OsPCR1 knockdown lines exhibited substantially higher Zn and lower Cd concentrations than the control”
t0“Rice”
Claim · model-written summary
OsPCR1 amino acid sequence varied between japonica and indica rice types.
- Taxon
- riceOryza sativae0
- Material
- japonica and indica rice typese0
- Gene
- OsPCR1e0
- Outcome
- variation in the OsPCR1 amino acid sequencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We identified some variation in the OsPCR1 amino acid sequence between the japonica and indica rice types using 15 different rice varieties”
Claim · model-written summary
Japonica-type PCR1 had a shorter N-terminus than PCR1 in other rice types.
- Taxon
- RiceOryza sativat0
- Material
- Japonica-typee0
- Gene
- PCR1e0
- Outcome
- N-terminuse0
- Direction
- shortere0
- Comparator
- the other rice typese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Japonica-type PCR1 had a shorter N-terminus than did PCR1 in the other rice types”
t0“Rice”
Claim · model-written summary
Japonica-type grains accumulated less Zn than indica-type grains.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“japonica-type grains accumulated less Zn than did indica-type grains”
t0“Rice”
Claim · model-written summary
The authors suggest rice PCR1 maintains metal homeostasis and grain weight.
- Taxon
- riceOryza sativae0
- Gene
- PCR1e0
- Outcome
- metal ion homeostasis and grain weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our study suggests that rice PCR1 maintains metal ion homeostasis and grain weight”
Claim · model-written summary
The authors suggest PCR1 may have been selected during domestication.
- Taxon
- RiceOryza sativat0
- Gene
- PCR1t0
- Outcome
- selected for during domesticatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“might have been selected for during domestication”
t0“Rice PCR1”