Effect of benzyladenine on RNA and protein synthesis in intact bean leaves at various stages of ageing [kidney bean, chloroplast ribosome, polysome]
1981
Naito, K. | Nagumo, S. | Furuya, K. | Suzuki, H. (Tsukuba Univ., Sakura-Mura, Ibaraki (Japan). Inst. of Biological Sciences)
Primary leaves of intact bean plants (Phaseolus vugaris L.) were treated with benzyladenine (BA) at different stages of ageing. BA promoted the synthesis of RNA, and soluble and insoluble proteins. The effects of BA stimulation differed depending on the age at which the leaf received the hormone treatment. In leaves attached to the plant, BA appeared to stimulate the rate of synthesis more than the rate of decomposition of RNA and protein, resulting in a net increase in RNA and protein. Both chloroplast and cytoplasmic ribosomes were still observed in intact yellowish green leaves. Polysomes in the cytoplasm increased remarkably when BA treatment was begun at late stages.
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