Claim · model-written summary
Root malate concentration correlated negatively with soil redox potential.
- Taxon
- S. acutus, S. validus, and to a lesser extent in P. australise1
- Organ / stage
- rootse1
- Outcome
- concentrationse0
- Direction
- negative relationshipe0
- Setting
- soil redox potentiale0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorValueQualifier
Verbatim
e0“concentrations showed a significant positive relationship with water depth and a significant negative relationship with soil redox potential during the first month of flooding.”
e1“Malate accumulated in the roots of S. acutus, S. validus, and to a lesser extent in P. australis”
Title
Effect of long-term flooding on root metabolic response in five freshwater marsh plant species
Karen L. McKee; Irving A. Mendelssohn; David M. Burdick Canadian Journal of Botany 1989. doi:10.1139/b89-421
Other claims from this paper (11)
- Observation The five marsh species had differing root metabolic responses to flooding depth.
- Intervention effect Flooding increased and maintained high root fermentation capacity in Scolochloa festucacea.
- Intervention effect Alcoholic fermentation capacity was not significantly or only briefly stimulated in the more tolerant species.
- Association Root alcohol dehydrogenase activity rose with flooding depth during the first month.
- Association Root alcohol dehydrogenase activity declined as soil redox potential rose during the first month.
- Intervention effect Flooding caused root malate accumulation in S. acutus and S. validus.
- Intervention effect Flooding caused less root malate accumulation in P. australis.
- Association Root malate concentration correlated positively with water depth.
- Observation Species differences in root metabolism persisted after a year of flooding.
- Observation Root specific gravity and air-space volume suggested species differences in oxygen movement resistance and oxygen volume.
- Mechanism The authors interpret differing metabolic responses as reflecting differential root aeration caused by root structure and soil oxygen demand.