Abstract
Low temperature and flooding are severe stresses to cotton plant growth and development in some parts of the world. This study was conducted to determine the interactive effects of low temperature and flooding on physiological and growth parameters of cotton plants, and yield of seed cotton. Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations. The stresses decreased photosynthetic rate, stomatal conductance, transpiration rate, and intercellular CO2 concentration by up to 37%, 71%, 52%, and 60%, respectively. The content of soluble protein and insecticidal protein was also decreased by up to 65% and 53%, respectively. By contrast, malondialdehyde (MDA) content increased by up to 114%. The length of fruiting branch was shortened by combined low temperature and flooding stress. Boll number and weight were decreased by 3.2% and 28.1%, respectively. Seed cotton yield was decreased by up to 43.2%. Our results suggest that concurrent low temperature and flooding at the boll-setting stage negatively influenced leaf photosynthetic activities and insecticidal protein production, leading to poor protection and yield. We recommend that agronomic measures be designed to stabilise physiological activities and insecticidal protein production in Bt cotton plants under stress conditions.
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Claims 12
Claim · model-written summary
Low temperature and flooding decreased the photosynthetic rate of Bt cotton by up to 37%.
- Taxon
- Bt cottone0
- Organ / stage
- boll-setting stagee0
- Treatment
- low temperature, flooding, and their combinationse0
- Outcome
- photosynthetic ratee1
- Direction
- decreasede1
- Value
- 37%e1
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e1“The stresses decreased photosynthetic rate, stomatal conductance, transpiration rate, and intercellular CO2 concentration by up to 37%, 71%, 52%, and 60%, respectively”
Claim · model-written summary
Low temperature and flooding decreased the stomatal conductance of Bt cotton by up to 71%.
- Taxon
- Bt cottone0
- Organ / stage
- boll-setting stagee0
- Treatment
- low temperature, flooding, and their combinationse0
- Outcome
- stomatal conductancee1
- Direction
- decreasede1
- Value
- 71%e1
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e1“The stresses decreased photosynthetic rate, stomatal conductance, transpiration rate, and intercellular CO2 concentration by up to 37%, 71%, 52%, and 60%, respectively”
Claim · model-written summary
Low temperature and flooding decreased the transpiration rate of Bt cotton by up to 52%.
- Taxon
- Bt cottone0
- Organ / stage
- boll-setting stagee0
- Treatment
- low temperature, flooding, and their combinationse0
- Outcome
- transpiration ratee1
- Direction
- decreasede1
- Value
- 52%e1
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e1“The stresses decreased photosynthetic rate, stomatal conductance, transpiration rate, and intercellular CO2 concentration by up to 37%, 71%, 52%, and 60%, respectively”
Claim · model-written summary
Low temperature and flooding decreased the intercellular CO2 concentration of Bt cotton by up to 60%.
- Taxon
- Bt cottone0
- Organ / stage
- boll-setting stagee0
- Treatment
- low temperature, flooding, and their combinationse0
- Outcome
- intercellular CO2 concentratione1
- Direction
- decreasede1
- Value
- 60%e1
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e1“The stresses decreased photosynthetic rate, stomatal conductance, transpiration rate, and intercellular CO2 concentration by up to 37%, 71%, 52%, and 60%, respectively”
Claim · model-written summary
Low temperature and flooding decreased the soluble protein content of Bt cotton by up to 65%.
- Taxon
- Bt cottone0
- Treatment
- low temperature, flooding, and their combinationse0
- Outcome
- content of soluble proteine2
- Direction
- decreasede2
- Value
- 65%e2
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e2“The content of soluble protein and insecticidal protein was also decreased by up to 65% and 53%, respectively”
Claim · model-written summary
Low temperature and flooding decreased the insecticidal protein content of Bt cotton by up to 53%.
- Taxon
- Bt cottone0
- Treatment
- low temperature, flooding, and their combinationse0
- Outcome
- insecticidal proteine2
- Direction
- decreasede2
- Value
- 53%e2
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e2“The content of soluble protein and insecticidal protein was also decreased by up to 65% and 53%, respectively”
Claim · model-written summary
Low temperature and flooding increased the malondialdehyde content of Bt cotton by up to 114%.
- Taxon
- Bt cottone0
- Treatment
- low temperature, flooding, and their combinationse0
- Outcome
- malondialdehyde (MDA) contente3
- Direction
- increasede3
- Value
- 114%e3
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e3“By contrast, malondialdehyde (MDA) content increased by up to 114%”
Claim · model-written summary
Combined low temperature and flooding stress shortened the fruiting branch of Bt cotton.
- Taxon
- Bt cottone0
- Treatment
- combined low temperature and flooding stresse4
- Outcome
- length of fruiting branche4
- Direction
- shortenede4
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e4“The length of fruiting branch was shortened by combined low temperature and flooding stress”
Claim · model-written summary
Low temperature and flooding decreased the boll number of Bt cotton by 3.2%.
- Taxon
- Bt cottone0
- Treatment
- low temperature, flooding, and their combinationse0
- Outcome
- Boll numbere5
- Direction
- decreasede5
- Value
- 3.2%e5
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e5“Boll number and weight were decreased by 3.2% and 28.1%, respectively”
Claim · model-written summary
Low temperature and flooding decreased the boll weight of Bt cotton by 28.1%.
- Taxon
- Bt cottone0
- Treatment
- low temperature, flooding, and their combinationse0
- Outcome
- weighte5
- Direction
- decreasede5
- Value
- 28.1%e5
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e5“Boll number and weight were decreased by 3.2% and 28.1%, respectively”
Claim · model-written summary
Low temperature and flooding decreased the seed cotton yield of Bt cotton by up to 43.2%.
- Taxon
- Bt cottone0
- Treatment
- low temperature, flooding, and their combinationse0
- Outcome
- Seed cotton yielde6
- Direction
- decreasede6
- Value
- 43.2%e6
Not reportedComparator
Verbatim
e0“Transgenic Bt cotton plants at the boll-setting stage were treated with low temperature, flooding, and their combinations”
e6“Seed cotton yield was decreased by up to 43.2%”
Claim · model-written summary
Agronomic measures should be designed to stabilise physiological activities and insecticidal protein production in Bt cotton under stress.
Verbatim
e7“We recommend that agronomic measures be designed to stabilise physiological activities and insecticidal protein production in Bt cotton plants under stress conditions”
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See all 9 papers →8 of 16 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.