✦ LIBER ✦

Increased nucleic-acid synthesis in relation to the breaking of dormancy of hazel seed by gibberellic acid

✍ Scribed by B. C. Jarvis; B. Frankland; J. H. Cherry

Book ID: 104749291
Publisher: Springer-Verlag
Year: 1968
Tongue: English
Weight: 565 KB
Volume: 83
Category: Article
ISSN: 0032-0935
DOI: 10.1007/bf00385335

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✦ Synopsis

Gibberellic acid breaks dormancy of hazel seeds. Markedly preceding growth of the embryonic axis is an increased RNA synthesis, as shown by total gNA determination and a2p incorporation into RNA. This increased RNA synthesis is accounted for by an increase in DNA template available for transcription and (subsequently) increased gNA polymerase activity. It is suggested that gibberellie acid breaks dormancy by a mechanism of gene derepression, as indicated by increased chromatin-directed RNA synthesis as measured in vitro.

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