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Correlation between far‐red absorbing phytochrome and response in phytochrome‐mediated anthocyanin synthesis
Author(s) -
STEINITZ B.,
SCHÄFER E.,
DRUMM H.,
MOHR H.
Publication year - 1979
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/j.1365-3040.1979.tb00788.x
Subject(s) - phytochrome , anthocyanin , seedling , cotyledon , sowing , botany , far red , biology , biophysics , chemistry , horticulture , red light
Mustard seedlings were light treated at 24 h after sowing (25°C) to induce phytochrome‐mediated anthocyanin synthesis in cotyledons and hypocotylar hook. All light treatments were performed within the range of the reciprocity law. The in situ photoconversion kinetics of phytochrome (P r → P fr ) were measured under the same light treatment. It was found that between 0.4 and 1.0 relative P fr level the amount of anthocyanin extracted from the organs at 52 h after sowing was linearily correlated with the amount of P fr produced at 24 h in cotyledons and hypocotylar hook. It is concluded that an explanation of the fluence response function for red light mediated anthocyanin synthesis in the mustard seedling does not require the concept of active vs . bulk phytochrome.