Claim · model-written summary
Under severe drought, isoprene emission rates of leaves were inhibited.
- Taxon
- sweetgum
Liquidambar styracifluat0 - Treatment
- severe droughte1
- Outcome
- isoprene emission rates of leavese1
- Direction
- inhibitede1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sweetgum (Liquidambar styraciflua) seedlings”
e1“Photosynthetic rates of leaves were inhibited by the drying treatments. Under severe drought, isoprene emission rates of leaves were also inhibited”
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.
- 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 During recovery from drying-rewatering cycles, isoprene emission rates in several seedlings were higher than in well-watered controls.
- 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.