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KMID : 0368419830260010001
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Journal of Plant Biology
1983 Volume.26 No. 1 p.1 ~ p.6
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Effects of GA3 on RNA Biosynthesis in Germinating Maize Seeds
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Abstract
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In order to investigate the effects of GA_3 on RNA biosynthesis, the amounts of rRNA and tRNA in germinating maize seeds were measured. The amount of rRNA in the endospermless seedlings was remarkably increased by GA_3 treatment after 48 h of germination, but no effect of GA_3 after 12 h and 72 h of germination was observed. The amount of tRNA was slightly increasedd by GA_3 treatment throughout 24 h to 72 h after germination, but no effect was observed after 12 h of germination. While the amount of rRNA in 0.5㎝ shoots in length was decreased by GA_3 treatment, both of the amount of rRNA were increaed in 1∼1.5㎝ shoots. According to the above mentioned results, it may be suggested that RNA biosynthesis is affected by GA_2 treatment, and that GA_2 participates in the biosysnthesis of rRNA rather than tRNA in germination maize seeds.
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KEYWORD
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