Abstract
By using the method of nutrient solution culture and simulated water stress by adding PEG6000,root killing to determine the apoplastic pathway and inhibited aquaporin activity by 0.5 mmol·L~(-1) HgCl_2,the effects of different nitrogen form(NO_3~——N,NH_4~+-N and NO_3~——N+NH_4~+-N)and water stress on growth and water uptake of rice plants were studied.The results showed that,under non-water stress or under water stress,the dry weight of rice plants was higher under the supply of mixture of nitrate and ammonium than the other two treatments.Under non-water stress,water uptake per dry weight of rice plant was the highest under sole supply of nitrate.Killed the root with boiled water to measure the water uptake in apoplast or with 0.5 mmol·L~(-1) HgCl_2 closing the water channel,all water uptake under sole supply of nitrate,sole supply of ammonium and the supply of mixture of nitrate and ammonium were reduced.The net photosynthetic rate,stomatal conductance and transpiration rate of rice plants were higher under the supply of mixture of nitrate and ammonium than the other two treatments.Killing root with boiled water to measure the water uptake in apoplast or with 0.5 mmol·L~(-1) HgCl_2 closing the water channel,all net photosynthetic rate,stomatal conductance and transpiration rate of rice plants under sole supply of nitrate,sole supply of ammonium and the supply of mixture of nitrate and ammonium were reduced.
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Claims 5
Claim · model-written summary
Mixed nitrate and ammonium supply gave higher rice dry weight than sole nitrate or sole ammonium, with and without water stress.
- Taxon
- rice plants
Oryza sativae1 - Treatment
- the supply of mixture of nitrate and ammoniume1
- Outcome
- dry weighte1
- Direction
- highere1
- Qualifier
- under non-water stress or under water stresse1
- Comparator
- the other two treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“under non-water stress or under water stress,the dry weight of rice plants was higher under the supply of mixture of nitrate and ammonium than the other two treatments”
Claim · model-written summary
Without water stress, water uptake per dry weight of rice was highest under sole nitrate supply.
- Taxon
- rice plantOryza sativae1
- Treatment
- sole supply of nitratee1
- Outcome
- water uptake per dry weighte1
- Direction
- the higheste1
- Qualifier
- Under non-water stresse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under non-water stress,water uptake per dry weight of rice plant was the highest under sole supply of nitrate”
Claim · model-written summary
Root killing and HgCl2 water-channel blocking reduced water uptake under all three nitrogen treatments.
- Taxon
- riceOryza sativat0
- Treatment
- Killed the root with boiled watere1
- Outcome
- water uptakee1
- Direction
- were reducede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of different nitrogen form and water stress on growth and water uptake of rice”
e1“Killed the root with boiled water to measure the water uptake in apoplast or with 0.5 mmol·L~(-1) HgCl_2 closing the water channel,all water uptake under sole supply of nitrate,sole supply of ammonium and the supply of mixture of nitrate and ammonium were reduced”
Claim · model-written summary
Mixed nitrate and ammonium supply gave higher net photosynthetic rate, stomatal conductance and transpiration rate in rice than the other two treatments.
- Taxon
- rice plantsOryza sativae1
- Treatment
- the supply of mixture of nitrate and ammoniume1
- Outcome
- net photosynthetic rate,stomatal conductance and transpiration ratee1
- Direction
- highere1
- Comparator
- the other two treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The net photosynthetic rate,stomatal conductance and transpiration rate of rice plants were higher under the supply of mixture of nitrate and ammonium than the other two treatments”
Claim · model-written summary
Root killing and HgCl2 water-channel blocking reduced net photosynthetic rate, stomatal conductance and transpiration rate in rice under all three nitrogen treatments.
- Taxon
- rice plantsOryza sativae1
- Treatment
- Killing root with boiled watere1
- Outcome
- net photosynthetic rate,stomatal conductance and transpiration ratee1
- Direction
- were reducede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Killing root with boiled water to measure the water uptake in apoplast or with 0.5 mmol·L~(-1) HgCl_2 closing the water channel,all net photosynthetic rate,stomatal conductance and transpiration rate of rice plants under sole supply of nitrate,sole supply of ammonium and the supply of mixture of nitrate and ammonium were reduced”
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See all 511 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.