Abstract
(Bt) is lower in cotton reproduction organs, especially during boll development period. The current study investigated the effects of nitrogen fertilization under nitrogen deficit on boll development and Bt toxin content in boll shell, which is the first target of boll worm harm. The protein synthesis and degradation in this process was also studied to uncover the underlying mechanism. Five nitrogen levels (under nitrogen deficiency) were imposed on two cultivars, Sikang3 (hybrid) and Sikang1 (conventional), at the Yangzhou University Farm, Yangzhou, China during 2015 to 2016 cotton growth seasons. Under nitrogen deficiency, enhanced nitrogen dose increased the boll number per plant, boll volume, boll weight, boll shell amino acid content, protease, and peptidase activities, but reduced boll shell Bt protein content, soluble protein content, glutamic pyruvic transaminase (GPT) and glutamate oxaloacetate transaminase (GOT) activities. There was a significant negative correlation between boll growth and boll shell insecticidal protein content under nitrogen deficiency, which was a result of uneven distribution of nitrogen in cotton bolls. Under increased nitrogen application, most nitrogen was transported and assimilated in boll seed instead of boll shell in developing cotton bolls, which resulted in decreased protein synthesis and increased protein degradation, and thus declined Bt protein content in boll shell.
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Claims 10
Claim · model-written summary
Under nitrogen deficiency, enhanced nitrogen dose increased boll number per plant, boll volume and boll weight in cotton.
- Taxon
- Cotton
Gossypium hirsutumt0 - Organ / stage
- bolle1
- Treatment
- enhanced nitrogen dosee1
- Outcome
- boll number per plant, boll volume, boll weighte1
- Direction
- increasede1
- Qualifier
- Under nitrogen deficiencye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“N-Deficient Cotton”
e1“Under nitrogen deficiency, enhanced nitrogen dose increased the boll number per plant, boll volume, boll weight”
Claim · model-written summary
Under nitrogen deficiency, enhanced nitrogen dose increased boll shell amino acid content, protease activity and peptidase activity in cotton.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- boll shelle2
- Treatment
- enhanced nitrogen dosee2
- Outcome
- boll shell amino acid content, protease, and peptidase activitiese2
- Direction
- increasede2
- Qualifier
- Under nitrogen deficiencye2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“N-Deficient Cotton”
e2“Under nitrogen deficiency, enhanced nitrogen dose increased the boll number per plant, boll volume, boll weight, boll shell amino acid content, protease, and peptidase activities”
Claim · model-written summary
Under nitrogen deficiency, enhanced nitrogen dose reduced boll shell Bt protein content and soluble protein content in cotton.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- boll shelle3
- Treatment
- enhanced nitrogen dosee4
- Outcome
- boll shell Bt protein content, soluble protein contente3
- Direction
- reducede3
- Qualifier
- Under nitrogen deficiencye4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“N-Deficient Cotton”
e3“but reduced boll shell Bt protein content, soluble protein content”
e4“Under nitrogen deficiency, enhanced nitrogen dose”
Claim · model-written summary
Under nitrogen deficiency, enhanced nitrogen dose reduced glutamic pyruvic transaminase and glutamate oxaloacetate transaminase activities in cotton.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- boll shelle5
- Treatment
- enhanced nitrogen dosee4
- Outcome
- glutamic pyruvic transaminase (GPT) and glutamate oxaloacetate transaminase (GOT) activitiese5
- Direction
- reducede5
- Qualifier
- Under nitrogen deficiencye4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“N-Deficient Cotton”
e5“but reduced boll shell Bt protein content, soluble protein content, glutamic pyruvic transaminase (GPT) and glutamate oxaloacetate transaminase (GOT) activities”
e4“Under nitrogen deficiency, enhanced nitrogen dose”
Claim · model-written summary
Boll growth was significantly negatively correlated with boll shell insecticidal protein content under nitrogen deficiency in cotton.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- boll shelle6
- Outcome
- boll shell insecticidal protein contente6
- Direction
- negativee6
- Qualifier
- under nitrogen deficiencye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“N-Deficient Cotton”
e6“There was a significant negative correlation between boll growth and boll shell insecticidal protein content under nitrogen deficiency”
Claim · model-written summary
The negative correlation between boll growth and boll shell insecticidal protein content was attributed to uneven distribution of nitrogen in cotton bolls.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- negative correlation between boll growth and boll shell insecticidal protein contente6
- Qualifier
- uneven distribution of nitrogen in cotton bollse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“N-Deficient Cotton”
e6“There was a significant negative correlation between boll growth and boll shell insecticidal protein content under nitrogen deficiency”
e7“which was a result of uneven distribution of nitrogen in cotton bolls”
Claim · model-written summary
Under increased nitrogen application, most nitrogen was transported and assimilated in boll seed instead of boll shell.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- boll seede1
- Treatment
- increased nitrogen applicatione1
- Outcome
- transported and assimilated in boll seede1
- Comparator
- boll shelle1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“N-Deficient Cotton”
e1“Under increased nitrogen application, most nitrogen was transported and assimilated in boll seed instead of boll shell in developing cotton bolls”
Claim · model-written summary
The decline of Bt protein content in boll shell was attributed to decreased protein synthesis and increased protein degradation.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- Bt protein content in boll shelle1
- Qualifier
- decreased protein synthesis and increased protein degradatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“N-Deficient Cotton”
e1“which resulted in decreased protein synthesis and increased protein degradation, and thus declined Bt protein content in boll shell”
Claim · model-written summary
Increased nitrogen application decreased protein synthesis in cotton boll shell.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- boll shelle2
- Treatment
- increased nitrogen applicatione1
- Outcome
- protein synthesise2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“N-Deficient Cotton”
e1“Under increased nitrogen application, most nitrogen was transported and assimilated in boll seed instead of boll shell in developing cotton bolls”
e2“which resulted in decreased protein synthesis and increased protein degradation, and thus declined Bt protein content in boll shell”
Claim · model-written summary
Increased nitrogen application increased protein degradation in cotton boll shell.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- boll shelle2
- Treatment
- increased nitrogen applicatione1
- Outcome
- protein degradatione2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“N-Deficient Cotton”
e1“Under increased nitrogen application, most nitrogen was transported and assimilated in boll seed instead of boll shell in developing cotton bolls”
e2“which resulted in decreased protein synthesis and increased protein degradation, and thus declined Bt protein content in boll shell”
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285 papers in the same direction as this paper · 53 in the opposite direction · 4 reporting no difference from an alternative
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See all 343 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.