Claim · model-written summary
In cotton leaves, heat stress decreased photosynthesis, quantum efficiency and chlorophyll content relative to optimal temperature.
- Taxon
- Gossypium hirsutum
Gossypium hirsutume0 - Organ / stage
- leavese1
- Treatment
- heat stresse1
- Outcome
- photosynthesis, quantum efficiency and chlorophyll contente1
- Direction
- decreasede1
- Comparator
- optimal (30/20 degrees C)e0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gossypium hirsutum plants exposed to optimal (30/20 degrees C) or high day temperature (38/20 degrees C) conditions during flowering”
e1“In leaves, heat stress decreased photosynthesis, quantum efficiency and chlorophyll content, but increased stomatal conductance”
Title
Heat stress‐induced limitations to reproductive success in Gossypium hirsutum
John L. Snider; Derrick M. Oosterhuis; Briggs W. Skulman; et al. Physiologia Plantarum 2009. doi:10.1111/j.1399-3054.2009.01266.x
Other claims from this paper (7)
- Intervention effect In cotton pistils under high day temperature (38/20 C) compared with optimal (30/20 C), fertilization efficiency and soluble carbohydrates declined significantly.
- Intervention effect In cotton pistils under high day temperature compared with optimal temperature, ATP content and NOX activity declined significantly.
- Intervention effect In cotton pistils under high day temperature compared with optimal temperature, water soluble calcium and glutathione reductase activity increased.
- Intervention effect In cotton pistils under high day temperature compared with optimal temperature, superoxide dismutase activity remained unchanged.
- Intervention effect In cotton leaves, heat stress increased stomatal conductance relative to optimal temperature.
- Mechanism The authors conclude that decreased source leaf activity inhibits pollen development, tube growth or guidance to the ovules because of insufficient energy supply to the developing pistil.
- Mechanism The authors conclude that a calcium-augmented antioxidant response in heat-stressed pistils interferes with enzymatic superoxide production needed for normal pollen tube growth and fertilization of the ovule.