Claim · model-written summary
During recovery from drying-rewatering cycles, isoprene emission rates in several seedlings were higher than in well-watered controls.
- Taxon
- sweetgum
Liquidambar styracifluat0 - Treatment
- drying-rewatering cyclese4
- Outcome
- isoprene emission ratese4
- Direction
- highere4
- Qualifier
- in several seedlingse4
- Comparator
- well-watered control seedlingse4
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sweetgum (Liquidambar styraciflua) seedlings”
e4“During the recovery phase of the drying-rewatering cycles, isoprene emission rates in several seedlings were higher than in well-watered control seedlings”
Title
C. Fang; R. K. Monson; E. B. Cowling Tree Physiology 1996. doi:10.1093/treephys/16.4.441
Other claims from this paper (10)
- Intervention effect Growth of sweetgum seedlings essentially stopped in response to the first drying cycle.
- Observation Seedling survival and capacity to recover turgor on rewatering remained high through all nine drying cycles.
- Intervention effect Photosynthetic rates of leaves were inhibited by the drying treatments.
- Intervention effect Under severe drought, isoprene emission rates of leaves were inhibited.
- Association Isoprene emission was generally less sensitive to drought than photosynthesis.
- Association The lower drought sensitivity of isoprene emission left a higher percentage of fixed carbon lost as isoprene as seedlings became more stressed.
- Intervention effect After the ninth drying-rewatering cycle, sustained daily watering recovered isoprene emission rates to control values within four days.
- Intervention effect Photosynthetic rates recovered only to 50% of control values after seven days of sustained daily watering.
- Mechanism Photosynthetic rate and isoprene emission rate are differentially influenced by limited water supplies.
- Mechanism Isoprene emission may have a protective role against excessive leaf temperatures during drought.