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The effect of ethylene on RNA and protein synthesis in germinating Manketti (Ricinodendron rautaneniiSchinz) seeds

✍ Scribed by A. B. Keegan; K. M. Kelly; J. Staden; M. T. Smith

Publisher: Springer Netherlands
Year: 1988
Tongue: English
Weight: 405 KB
Volume: 7
Category: Article
ISSN: 0167-6903
DOI: 10.1007/bf00037632

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✦ Synopsis

Amino acid uptake and protein synthesis were monitored in the embryonic axis, cotyledons and endosperm of manketti seeds (Ricinodendron rautanenii Schinz) during imbition, dormancy and dormancy-breaking by ethylene . Protein synthesis increased in all tissues within 48 h of imbibition and was strongly inhibited by cycloheximide and actinomycin D . No marked increase in protein synthesis was observed following ethylene treatment suggesting that qualitative rather than quantitative changes in protein synthesis were associated with dormancy-breaking . Seed germination was relatively insensitive to treatment with actinomycin D in marked contrast to the inhibition observed with cycloheximide .

It is suggested that dormancy-breaking by ethylene may require protein synthesis but not DNA-dependent RNA synthesis .

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