ISSN:
1365-3040
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Abstract. We measured phytochrome content by radioimmunoassay in green, light-grown oats (Avena sativa L., cv. Garry) grown under several light regimes. Phytochrome content increased linearly to six times the light-grown level during a 24-h dark incubation and to fifty times the light-grown level after 48 h darkness. Phytochrome content, in response to a cycle of 12-h light, 12-h dark photoperiods, increased to three times the light-grown level in darkness and returned to the light-grown level during the subsequent light period. Plants given far-red light immediately prior to a 12-h dark period contained about four-fold more phytochrome than light-grown oats, compared with a three-fold increase in plants treated identically except given no far-red light. We also attempted, unsuccessfully, to eliminate a general nonspecific interference by crude plant extracts with the radioimmunoassay.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/1365-3040.ep11580894
