Influence of the Different NO3/NH4 on mRNA of NR in Sugar Beet
نویسندگان
چکیده
In sugar beet seedling period and sugar accumulation period, the quantity of NR-mRNA raised with the rate of nitrate nitrogen and ammonium nitrogen raised, and the activity of NR raised also, that was the quantity of NR-mRNA of NO3/NH4 —4:0 was the highest. In phyllome formation period and root growth period, the quantity of NR-mRNA of NO3/NH4—3:1 was the highest, and its activity was the highest and that of NO3/NH4—4:0 was the second, that was because these periods were peak of absorbing nitrogen. The results showed that nitrate nitrogen regulated NR in transcriptional level. [Nature and Science 2003;1(1):39-41].
منابع مشابه
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