6533b85bfe1ef96bd12ba95c
RESEARCH PRODUCT
Seasonal pattern of mannitol and malate accumulation in leaves of two manna ash species (Fraxinus ornusL. andF. angustifoliaVahl) growing in Sicily
Enrico BelliniElisabetta OddoMaurizio Sajevasubject
biologyDry weightFraxinus ornusBotanymedicinePlant ScienceFraxinus angustifoliaMannitolbiology.organism_classificationEcology Evolution Behavior and Systematicsmedicine.drugdescription
ABSTRACT The content of mannitol and malate was assayed enzimatically during spring, summer and autumn, in leaves of two species of ash, Fraxinus ornus L. and Fraxinus angustifolia Vahl, traditionally cultivated in Sicily for the extraction of manna. Both species contain high levels of mannitol and show, on a dry weight basis, a 65–80% increase in the summer content of this polyol. The malate content differs in the two species: in F. ornus it shows a summer increase, but it is relatively low (65–115 µmol g-1 DW), while in F. angustifolia it is higher (275–318 µmol g-1 DW), but remains more or less constant throughout the year. The results suggest that in these species, under the local field conditions, mannitol has a more relevant role than malate in the response to summer drought.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-01-01 | Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology |