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THE INFLUENCE OF LIGHT AND NITRATE ON THE INDUCTION OF NITRATE REDUCTASE IN DARK GROWN SEEDLINGS OF RAPHANUS SATIVUS
Author(s) -
Stulen Ineke,
KochBosma T.,
Koster A.
Publication year - 1973
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1973.tb00879.x
Subject(s) - raphanus , etiolation , nitrate reductase , nitrate , limiting , chemistry , botany , horticulture , biology , enzyme , biochemistry , mechanical engineering , organic chemistry , engineering
SUMMARY In cotyledons of 4 day old etiolated, dark‐induced radish seedlings a high level of nitrate reductase was found after an induction period of 24 hours. The activity declined after a prolonged induction time. It was shown that the decrease in activity was not due to a decrease in uptake of nitrate. In the dark other factors must become limiting after induction periods exceeding 24 hours.