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The Effect of NAA (1‐Naphthaleneacetic Acid) and Morphactin (Methyl 2‐Chloro‐9‐hydroxyfluorene‐9‐carboxylate) on RNA and Protein Synthesis in Senescing Bean Endocarp
Author(s) -
SALMINEN SEPPO O.,
GAGIANAS ATHAN A.,
BERG ARTHUR R.
Publication year - 1972
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.1399-3054.1972.tb03566.x
Subject(s) - phaseolus , auxin , uridine , 1 naphthaleneacetic acid , chemistry , biochemistry , leucine , rna , amino acid , botany , biology , cytokinin , gene
Abstract The effect of NAA (1‐naphthaleneacetic acid) and morphactin (methyl 2‐chloro‐9‐hydroxyfluorene‐9‐carboxylate) on the uptake and incorporation of uridine‐5‐ 3 H and l ‐leucineU‐ 14 C was studied in senescing bean endocarp ( Phaseolus vulgaris L. cv. Kentucky wonder pole beans) sections. Both growth regulators inhibited uptake of these precursors and appeared to affect different components of the uptake mechanism. A possible synergistic inhibition was seen in case of leucine, but in case of uridine, the effect was less than additive. A strong synergistic increase in the incorporation of l ‐leucine into protein was seen. Thus, morphactin interacted with an exogenously applied auxin at the level of the protein synthesizing apparatus.