Growth inhibitor effects on protoplasmic drought tolerance and protein synthesis in leaf cells of the resurrection grass, Sporobolus stapfianus

Hydrated leaves of the resurrection grass S.stapfianus Gandoger are not desiccation tolerant, but tolerance can be induced in them by moderate to severe drought stress. When brassinolide (BR) and methyljasmonic acid (MJA) were applied separately, each improved PDT by approximately 6 MPa. Exogenous a...

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Bibliographic Details
Published in:Plant growth regulation 1998-03, Vol.24 (3), p.179
Main Authors: Ghasempour, H.R. (Razi Univ., Kermanshah (Iran Islamic Republic). Dept. of Biology), Anderson, E.M, Gianello, R.D, Gaff, D.F
Format: Article
Language:English
Subjects:
ABA
Abscisic acid
Desiccation
Drought
DROUGHT RESISTANCE
DROUGHT STRESS
ESTRES DE SEQUIA
GRAMINEAE
Grasses
GROWTH INHIBITORS
INHIBIDORES DEL CRECIMIENTO
INHIBITEUR DE CROISSANCE
Leaves
PROTEIN SYNTHESIS
PROTOPLASM
PROTOPLASMA
PROTOPLASME
RESISTANCE A LA SECHERESSE
RESISTENCIA A LA SEQUIA
SINTESIS DE PROTEINAS
STRESS DU A LA SECHERESSE
SYNTHESE PROTEIQUE
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Summary:Hydrated leaves of the resurrection grass S.stapfianus Gandoger are not desiccation tolerant, but tolerance can be induced in them by moderate to severe drought stress. When brassinolide (BR) and methyljasmonic acid (MJA) were applied separately, each improved PDT by approximately 6 MPa. Exogenous abscisic acid (ABA) improved the protoplasmic drought tolerance (PDT) of suspended cells from hydrated leaves of S. stapfianus only slightly (about 1 MPa). BR, MJA or ABA treatment of leaves on fully hydrated S. stapfianus plants induced changes in the leaf protein complement (partitioned by 2-D PAG electrophoresis), with the induction of apparently novel proteins and increased and decreased abundances of other proteins. Most of the changes that were induced by MJA differed from those produced by ABA and also by BR. Two proteins increased in abundance after treatment of leaves with MJA, BR or ABA.[PUBLICATION ABSTRACT]
ISSN:0167-6903
1573-5087
DOI:10.1023/A:1005975512179