Abstract
Cotton (Gossypium hirsutum L.) plants grown under field water deficits exhibited an 80 to 85% reduction in leaf area index, plant height, and dry matter accumulation compared with irrigated controls. Midday photosynthetic rates of dryland plants decreased 2-fold, and canopy temperatures increased to 40 degrees C at 80 days after planting compared with canopy temperatures of 30 degrees C for irrigated plants. Leaves from dryland plants which had exhibited canopy temperatures of 40 degrees C for several weeks accumulated stainable levels of polypeptides with apparent molecular weights of 100, 94, 89, 75, 60, 58, 37, and 21 kilodaltons. These polypeptides did not accumulate in leaves from irrigated plants.Addition of [(35)S]methionine to leaves of growth chamber-grown cotton plants and subsequent incubation at 40 degrees C for 3 hours radiolabeled polypeptides with molecular weights similar to those that accumulate in dryland cotton leaves. These data suggest that the proteins which accumulate in water-stressed cotton leaves at elevated temperatures (40 degrees C) are heat shock proteins and that these proteins can accumulate to substantial levels in field-stressed plants.
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Claims 7
Claim · model-written summary
Field water deficits reduced leaf area index, plant height and dry matter accumulation of cotton by 80 to 85% compared with irrigated controls.
- Taxon
- Cotton (Gossypium hirsutum L.)
Gossypium hirsutume1 - Treatment
- field water deficitse1
- Outcome
- leaf area index, plant height, and dry matter accumulatione1
- Direction
- reductione1
- Value
- 80 to 85%e1
- Comparator
- irrigated controlse1
- Setting
- fielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton (Gossypium hirsutum L.) plants grown under field water deficits exhibited an 80 to 85% reduction in leaf area index, plant height, and dry matter accumulation compared with irrigated controls”
Claim · model-written summary
Midday photosynthetic rates of dryland cotton plants decreased 2-fold.
- Taxon
- Cotton (Gossypium hirsutum L.)Gossypium hirsutume1
- Treatment
- drylande2
- Outcome
- Midday photosynthetic ratese2
- Direction
- decreasede2
- Value
- 2-folde2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton (Gossypium hirsutum L.) plants grown under field water deficits exhibited an 80 to 85% reduction in leaf area index, plant height, and dry matter accumulation compared with irrigated controls”
e2“Midday photosynthetic rates of dryland plants decreased 2-fold”
Claim · model-written summary
Canopy temperature of dryland cotton rose to 40 degrees C at 80 days after planting, compared with 30 degrees C for irrigated plants.
- Taxon
- Cotton (Gossypium hirsutum L.)Gossypium hirsutume1
- Treatment
- field water deficitse1
- Outcome
- canopy temperaturese3
- Direction
- increasede3
- Value
- 40 degrees Ce3
- Qualifier
- 80 days after plantinge3
- Comparator
- irrigated plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton (Gossypium hirsutum L.) plants grown under field water deficits exhibited an 80 to 85% reduction in leaf area index, plant height, and dry matter accumulation compared with irrigated controls”
e3“canopy temperatures increased to 40 degrees C at 80 days after planting compared with canopy temperatures of 30 degrees C for irrigated plants”
Claim · model-written summary
Leaves of dryland cotton accumulated stainable polypeptides of 100, 94, 89, 75, 60, 58, 37 and 21 kDa that did not accumulate in irrigated leaves.
- Taxon
- Cotton (Gossypium hirsutum L.)Gossypium hirsutume1
- Organ / stage
- Leavese4
- Treatment
- drylande4
- Outcome
- stainable levels of polypeptidese4
- Value
- 100, 94, 89, 75, 60, 58, 37, and 21 kilodaltonse4
- Comparator
- irrigated plantse5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton (Gossypium hirsutum L.) plants grown under field water deficits exhibited an 80 to 85% reduction in leaf area index, plant height, and dry matter accumulation compared with irrigated controls”
e4“Leaves from dryland plants which had exhibited canopy temperatures of 40 degrees C for several weeks accumulated stainable levels of polypeptides with apparent molecular weights of 100, 94, 89, 75, 60, 58, 37, and 21 kilodaltons”
e5“These polypeptides did not accumulate in leaves from irrigated plants”
Claim · model-written summary
Radiolabeled polypeptides of cotton leaves incubated at 40 degrees C for 3 hours had molecular weights similar to those accumulating in dryland cotton leaves.
- Taxon
- cottonGossypium hirsutume6
- Organ / stage
- leavese6
- Treatment
- incubation at 40 degrees C for 3 hourse6
- Outcome
- radiolabeled polypeptidese6
- Comparator
- dryland cotton leavese6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Addition of [(35)S]methionine to leaves of growth chamber-grown cotton plants and subsequent incubation at 40 degrees C for 3 hours radiolabeled polypeptides with molecular weights similar to those that accumulate in dryland cotton leaves”
Claim · model-written summary
The proteins accumulating in water-stressed cotton leaves at elevated temperature are suggested to be heat shock proteins.
- Taxon
- cottonGossypium hirsutume7
- Treatment
- water-stressede7
- Outcome
- heat shock proteinse7
- Qualifier
- These data suggeste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“These data suggest that the proteins which accumulate in water-stressed cotton leaves at elevated temperatures (40 degrees C) are heat shock proteins”
Claim · model-written summary
Heat shock proteins can accumulate to substantial levels in field-stressed cotton plants.
- Taxon
- Cotton (Gossypium hirsutum L.)Gossypium hirsutume1
- Treatment
- field-stressede2
- Outcome
- accumulate to substantial levelse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cotton (Gossypium hirsutum L.) plants grown under field water deficits exhibited an 80 to 85% reduction in leaf area index, plant height, and dry matter accumulation compared with irrigated controls”
e2“these proteins can accumulate to substantial levels in field-stressed plants”
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See all 86 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.