The influence of ethylene and spermine on phosphatase activity during senescence in Marchantia polymorpha

Two isophosphatases were identified in senescing Marchantia polymorpha thalli. Ethylene elevated total phosphatase activity by 133%-155%. Spermine reduced total phosphatase activity by 135%-175%. Simultaneous treatment with ethylene and spermine led to a 120%-163% decrease in activity compared with...

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Bibliographic Details
Published in:International journal of plant sciences 1997-09, Vol.158 (5), p.552-555
Main Authors: Labelle, J.L, Dutton, K.G, Maravolo, N.C
Format: Article
Language:English
Subjects:
ACTIVIDAD ENZIMATICA
ACTIVITE ENZYMATIQUE
AGE
AVEJENTAMIENTO
BRYOPHYTA
Cellular senescence
CHEMICAL COMPOSITION
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
Development
EDAD
Enzymes
ENZYMIC ACTIVITY
ESPERMINA
ESTERASAS
ESTERASE
ESTERASES
ETHYLENE
Ethylene production
ETILENO
ISOENZIMAS
ISOENZYME
ISOENZYMES
Middle age
Nucleic acid precursors
Phosphatases
PHOSPHORIC MONOESTER HYDROLASES
Plant tissues
Plants
Polyamines
SENESCENCE
SPERMINE
Thallus
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Summary:Two isophosphatases were identified in senescing Marchantia polymorpha thalli. Ethylene elevated total phosphatase activity by 133%-155%. Spermine reduced total phosphatase activity by 135%-175%. Simultaneous treatment with ethylene and spermine led to a 120%-163% decrease in activity compared with ethylene treatment alone. The increase in phosphatase levels associated with ethylene treatment suggests that this enzyme is associated with senescence in Marchantia. An antisenescence function for spermine is also indicated.
ISSN:1058-5893
1537-5315
DOI:10.1086/297466