Abstract
It is well known that salinity stress inhibits plant growth and Bt protein synthesis in cotton(Gossypium hirsutum L.),but it is still not clear if fertilization alleviates the inhibitory effects.Two experiments with pot culture and hydroponic culture were conducted using Bt cotton strain K638 in a rain shelter and a greenhouse,respectively,to study the effects of N fertilization and its forms(NO3——N and NH4+-N) on plant growth,nitrogen uptake,Bt protein content and the ratio of N in Bt protein to total N under salinity stress.In the pot experiment,a significant interaction was detected between N fertilization and salinity stress on leaf Bt protein content.Under non-saline and low saline(total salt content≈0.15%) soils,N fertilization enhanced plant biomass by 3.0 and 2.8 times,and increased leaf Bt protein content by 41.0 and 90.9%,and the ratio of N in Bt protein to total N by 9.3% and 15.6%,compared with the non-fertilization treatment,respectively;under moderate saline soil(total soluble salt content≈0.30%),N fertilization also improved plant biomass(1.4 times),total N content(98.8%) and Bt protein level(83.3%),but decreased the ratio of N in Bt protein to total N(7.3%).In the hydroponics experiment,plant biomass and the total N content in NO3——N treatment were higher than that in NH4+-N with or without salinity stress,but the Bt protein levels was slightly lower than that in NH4+-N treatment owing to decreased ratio of N in Bt protein to total N under salinity stress(11.0%).It is concluded that Bt protein concentration in leaves was influenced by nitrogen fertilization under salinity stress through increasing nitrogen uptake and/or altering the ratio of N in Bt protein to total N.
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Claims 14
Claim · model-written summary
Nitrogen fertilization and salinity stress significantly interacted for leaf Bt protein content.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- N fertilizatione0
- Outcome
- leaf Bt protein contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant interaction was detected between N fertilization and salinity stress on leaf Bt protein content.”
t0“cotton”
Claim · model-written summary
Nitrogen fertilization increased cotton biomass 3.0 times in non-saline soil.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- N fertilizatione0
- Outcome
- plant biomasse0
- Direction
- enhancede0
- Value
- 3.0e0
- Qualifier
- non-salinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under non-saline and low saline(total salt content≈0.15%) soils,N fertilization enhanced plant biomass by 3.0 and 2.8 times”
t0“cotton”
Claim · model-written summary
Nitrogen fertilization increased cotton biomass 2.8 times in low saline soil.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- N fertilizatione0
- Outcome
- plant biomasse0
- Direction
- enhancede0
- Value
- 2.8 timese0
- Qualifier
- low saline(total salt content≈0.15%) soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under non-saline and low saline(total salt content≈0.15%) soils,N fertilization enhanced plant biomass by 3.0 and 2.8 times”
t0“cotton”
Claim · model-written summary
Nitrogen fertilization increased leaf Bt protein content 41.0% under non-saline conditions.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- N fertilizatione1
- Outcome
- leaf Bt protein contente0
- Direction
- increasede0
- Value
- 41.0e0
- Qualifier
- non-salinee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased leaf Bt protein content by 41.0 and 90.9%”
t0“cotton”
e1“a significant interaction was detected between N fertilization and salinity stress on leaf Bt protein content.”
e2“Under non-saline and low saline(total salt content≈0.15%) soils,N fertilization enhanced plant biomass by 3.0 and 2.8 times”
Claim · model-written summary
Nitrogen fertilization increased leaf Bt protein content 90.9% under low salinity.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- N fertilizatione1
- Outcome
- leaf Bt protein contente0
- Direction
- increasede0
- Value
- 90.9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased leaf Bt protein content by 41.0 and 90.9%”
t0“cotton”
e1“a significant interaction was detected between N fertilization and salinity stress on leaf Bt protein content.”
Claim · model-written summary
Nitrogen fertilization increased the ratio of nitrogen in Bt protein to total nitrogen by 9.3% in non-saline soil.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Nitrogen Fertilizationt0
- Outcome
- ratio of N in Bt protein to total Ne0
- Value
- 9.3%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ratio of N in Bt protein to total N by 9.3% and 15.6%”
t0“Nitrogen Fertilization on Bt Cotton”
Claim · model-written summary
Nitrogen fertilization increased the ratio by 15.6% in low saline soil.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Nitrogen Fertilizationt0
- Outcome
- ratio of N in Bt protein to total Ne0
- Value
- 15.6%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ratio of N in Bt protein to total N by 9.3% and 15.6%”
t0“Nitrogen Fertilization on Bt Cotton”
Claim · model-written summary
Nitrogen fertilization improved biomass 1.4 times in moderately saline soil.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- N fertilizatione0
- Outcome
- plant biomasse0
- Direction
- improvede0
- Value
- 1.4 timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under moderate saline soil(total soluble salt content≈0.30%),N fertilization also improved plant biomass(1.4 times),total N content(98.8%) and Bt protein level(83.3%)”
t0“cotton”
Claim · model-written summary
Nitrogen fertilization improved total nitrogen content 98.8% in moderately saline soil.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- N fertilizatione0
- Outcome
- total N contente0
- Direction
- improvede0
- Value
- 98.8%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under moderate saline soil(total soluble salt content≈0.30%),N fertilization also improved plant biomass(1.4 times),total N content(98.8%) and Bt protein level(83.3%)”
t0“cotton”
Claim · model-written summary
Nitrogen fertilization improved Bt protein level 83.3% in moderately saline soil.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- N fertilizatione0
- Outcome
- Bt protein levele0
- Direction
- improvede0
- Value
- 83.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under moderate saline soil(total soluble salt content≈0.30%),N fertilization also improved plant biomass(1.4 times),total N content(98.8%) and Bt protein level(83.3%)”
t0“cotton”
Claim · model-written summary
Nitrogen fertilization decreased the Bt protein nitrogen to total nitrogen ratio by 7.3% in moderately saline soil.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Nitrogen Fertilizationt0
- Outcome
- ratio of N in Bt protein to total Ne0
- Direction
- decreasede0
- Value
- 7.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but decreased the ratio of N in Bt protein to total N(7.3%).”
t0“Nitrogen Fertilization on Bt Cotton”
Claim · model-written summary
Nitrate nitrogen produced higher biomass and total nitrogen content than ammonium nitrogen.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- NO3——N treatmente0
- Outcome
- plant biomass and the total N contente0
- Direction
- highere0
- Comparator
- NH4+-Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant biomass and the total N content in NO3——N treatment were higher than that in NH4+-N with or without salinity stress”
t0“cotton”
Claim · model-written summary
Nitrate nitrogen produced slightly lower Bt protein levels than ammonium nitrogen.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- NO3——Ne1
- Outcome
- Bt protein levelse0
- Direction
- lowere0
- Comparator
- NH4+-N treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but the Bt protein levels was slightly lower than that in NH4+-N treatment owing to decreased ratio of N in Bt protein to total N under salinity stress(11.0%).”
t0“cotton”
e1“plant biomass and the total N content in NO3——N treatment were higher than that in NH4+-N with or without salinity stress”
Claim · model-written summary
Under salinity, nitrate nitrogen decreased the ratio of Bt protein nitrogen to total nitrogen by 11.0%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- NO3——Ne1
- Outcome
- ratio of N in Bt protein to total Ne0
- Direction
- decreasede0
- Value
- 11.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased ratio of N in Bt protein to total N under salinity stress(11.0%).”
t0“cotton”
e1“plant biomass and the total N content in NO3——N treatment were higher than that in NH4+-N with or without salinity stress”
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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.