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Internode length in Pisum . Biochemical expression of the le gene in darkness
Author(s) -
Ross John J.,
Reid James B.
Publication year - 1989
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1989.tb05626.x
Subject(s) - darkness , pisum , sativum , biology , botany , endogeny , horticulture , biochemistry
Ross, J. J. and Reid, J. B. 1989. Internode length in Pisum. Biochemical expression of the Le gene in darkness. The Le gene appears to be biochemically expressed in dark‐grown pea ( Pisum sativum L.) plants since the previously reported difference in metabolism of [ 3 H]‐GA 30 between light‐grown Le and Le plants was also observed in darkness. Furthermore, both light‐ and dark‐grown Le plants contained more endogenous GA 1 , ‐like substance than did comparable Le plants. Darkness did not appear to significantly increase the accumulation of GA 1 , in either Le or Le plants, although confirmation of GA 1 levels by gas chromatography‐selected ion monitoring is still required. The results support previous findings that the overall metabolism of [ 3 H]‐GA 20 , is accelerated by darkness. The evidence presented here supports previous suggestions that darkness acts on internode length by increasing some aspect of GA sensitivity.