Abstract
The objectives of the present study were to compare the dynamic of the growth and photosynthetic characteristics of cotton varieties contrasting in waterlogging (WL) tolerance when subjected to hypoxia stress. The growth of the WL-sensitive genotypes was notably inhibited by WL, mainly as a result of a significant reduction in the net photosynthesis (PN) after two days of hypoxia treatment; in the tolerant varieties, no significant changes in PN were observed until 8 d after hypoxia onset. The intercellular CO2 concentration and maximal photochemical efficiency of PSII significantly declined, and the nonphotochemical quenching increased in the sensitive varieties. Infrared thermography showed that a low stomatal conductance resulted in an increased leaf temperature under hypoxia stress. Spectral image analysis suggested that the pigment content and water content rapidly decreased in the leaves of the sensitive varieties. It is concluded that maintaining stomatal opening through the interaction of ethylene and abscisic acid may be an important strategy to improve waterlogging tolerance in cotton.
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Claims 10
Claim · model-written summary
Waterlogging inhibited growth of sensitive cotton genotypes.
- Taxon
- cotton
Gossypium hirsutumt0 - Material
- WL-sensitive genotypese0
- Treatment
- WLe0
- Outcome
- growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of the WL-sensitive genotypes was notably inhibited by WL”
t0“cotton”
Claim · model-written summary
After two days of hypoxia, net photosynthesis fell significantly in sensitive genotypes.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- hypoxia treatmente0
- Outcome
- net photosynthesis (PN)e0
- Direction
- reductione0
- Qualifier
- after two dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant reduction in the net photosynthesis (PN) after two days of hypoxia treatment”
t0“cotton”
Claim · model-written summary
Tolerant genotypes showed no significant PN change until day eight.
- Taxon
- cottonGossypium hirsutumt0
- Material
- tolerant varietiese0
- Treatment
- hypoxiae0
- Outcome
- PNe0
- Direction
- no significant changese0
- Qualifier
- until 8 d after hypoxia onsete0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the tolerant varieties, no significant changes in PN were observed until 8 d after hypoxia onset.”
t0“cotton”
Claim · model-written summary
Hypoxia lowered intercellular CO2 concentration in sensitive varieties.
- Taxon
- cottonGossypium hirsutumt0
- Material
- sensitive varietiese0
- Treatment
- hypoxia stresst0
- Outcome
- intercellular CO2 concentratione0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The intercellular CO2 concentration and maximal photochemical efficiency of PSII significantly declined, and the nonphotochemical quenching increased in the sensitive varieties.”
t0“cotton genotypes under hypoxia stress”
Claim · model-written summary
Maximal PSII photochemical efficiency declined significantly in sensitive varieties.
- Taxon
- cottonGossypium hirsutumt0
- Material
- sensitive varietiese0
- Treatment
- hypoxia stresst0
- Outcome
- maximal photochemical efficiency of PSIIe0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The intercellular CO2 concentration and maximal photochemical efficiency of PSII significantly declined, and the nonphotochemical quenching increased in the sensitive varieties.”
t0“cotton genotypes under hypoxia stress”
Claim · model-written summary
Nonphotochemical quenching increased in sensitive varieties.
- Taxon
- cottonGossypium hirsutumt0
- Material
- sensitive varietiese0
- Treatment
- hypoxia stresst0
- Outcome
- nonphotochemical quenchinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nonphotochemical quenching increased in the sensitive varieties.”
t0“cotton genotypes under hypoxia stress”
Claim · model-written summary
Low stomatal conductance under hypoxia increased leaf temperature.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- hypoxia stresse0
- Outcome
- leaf temperaturee0
- Direction
- increasede0
- Qualifier
- a low stomatal conductancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a low stomatal conductance resulted in an increased leaf temperature under hypoxia stress.”
t0“cotton”
Claim · model-written summary
Pigment content declined rapidly in leaves of sensitive varieties.
- Taxon
- cottonGossypium hirsutumt0
- Material
- sensitive varietiese0
- Organ / stage
- leavese0
- Outcome
- pigment contente0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pigment content and water content rapidly decreased in the leaves of the sensitive varieties.”
t0“cotton”
Claim · model-written summary
Water content declined rapidly in leaves of sensitive varieties.
- Taxon
- cottonGossypium hirsutumt0
- Material
- sensitive varietiese0
- Organ / stage
- leavese0
- Outcome
- water contente0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pigment content and water content rapidly decreased in the leaves of the sensitive varieties.”
t0“cotton”
Claim · model-written summary
Authors propose maintaining stomatal opening through ethylene–abscisic acid interaction to improve waterlogging tolerance.
- Taxon
- cottonGossypium hirsutume0
- Compound
- ethylene and abscisic acide0
- Outcome
- maintaining stomatal openinge0
- Qualifier
- may be an important strategy to improve waterlogging tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maintaining stomatal opening through the interaction of ethylene and abscisic acid may be an important strategy to improve waterlogging tolerance in cotton.”
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See all 14 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.