Homogenates of etiolated wheat leaves contain increased levels of acidic gibberellin (GA)-like substances following treatment with red light. Differential centrifugation of homogenates indicates that the response is confined to the 1000 g (or plastid) fraction. Irradiation of suspensions of intact e
The red light controlled production of gibberellin in etiolated wheat leaves
โ Scribed by B. R. Loveys; P. F. Wareing
- Publisher
- Springer-Verlag
- Year
- 1971
- Tongue
- English
- Weight
- 417 KB
- Volume
- 98
- Category
- Article
- ISSN
- 0032-0935
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โฆ Synopsis
Most of the gibberellin activity detectable in extracts of etiolated wheat leaf tissue occurs in a bound form. There is a rapid increase in extractable gibberellin-like substances following exposure of the tissue to red light with a concomitant fall in the amount of bound gibberellin. Actinomycin-D and AMo 1618 do not inhibit this initial phase of red light stimulated gibberellin production.
It is concluded that red light stimulated gibberellin production in etiolated wheat leaf tissue is due to release from a bound form and to synthesis.
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