Claim · model-written summary
Slow-developing drought raised xylem sap sugar from 1 to 3 g/L, priming the stem for recovery.
- Taxon
- Vitis vinifera
Vitis viniferae0 - Material
- Grenachee0
- Treatment
- slow‐developing droughte0
- Outcome
- sugar accumulatione1
- Direction
- accumulatione1
- Value
- from 1 to 3 g L −1e1
- Comparator
- fast‐developing droughte0
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grenache Vitis vinifera cultivar was exposed to either fast‐developing drought (within few days; FDD), typical of pot experiments, or slow‐developing drought (few weeks, SDD), more typical for natural conditions”
e1“xylem sap acidification from 6 to 5.5 pH and sugar accumulation from 1 to 3 g L −1”
Title
Cristina Morabito; Jessica Orozco; Giulia Tonel; et al. Physiologia Plantarum 2021. doi:10.1111/ppl.13590
Other claims from this paper (11)
- Intervention effect Fast-developing drought caused fast (2-3 days) stomatal closure in response to increased stress.
- Intervention effect Fast-developing drought gave high ABA accumulation in xylem sap (>400 μg/L).
- Intervention effect Fast-developing drought without the substantial changes of stem priming for recovery: no sugar accumulation and no drop in xylem sap pH.
- Intervention effect Slow-developing drought caused gradual stomatal closure.
- Intervention effect Slow-developing drought gave low ABA accumulation in xylem sap (<100 μg/L).
- Intervention effect Slow-developing drought acidified xylem sap from pH 6 to 5.5, priming the stem for recovery.
- Intervention effect Fast and slow drought gave similar trends over time in the recovery of stomatal conductance.
- Intervention effect Fast and slow drought differed in sensitivity to xylem ABA.
- Association Grenache showed near-isohydric and near-anisohydric behavior depending on the rate of drought progression.
- Mechanism Isohydry during fast-developing drought could potentially protect against large sudden swings in tension.
- Mechanism Transition to anisohydry during slow-developing drought could prioritize maintenance of photosynthetic activity over hydraulic security.