Polysome Formation in Light-sensitive Common Purslane Seeds
- 1 May 1975
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 55 (5) , 928-931
- https://doi.org/10.1104/pp.55.5.928
Abstract
Common purslane (Portulaca oleracea L.) seeds show light-controlled dormancy. Ribosome profiles from dark-incubated seeds consist of 22 to 26% polysomes. Light induces germination and stimulates polysome formation during the 12-hour lag period preceding radicle protrusion. Polysome levels increase to 29, 35, and 41% with exposure to 3, 6, and 9 hours of light, respectively. Although polysomes form on imbibition in the dark, 6 hours of light stimulates a significant increase in polysome formation which is probably related to early stages of radicle elongation.Keywords
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