Nucleic Acids in Developing Fruits and Other Tissues of Shamouti Orange (Citrus sinensis (L.) Osbeck)1,2,3
Open Access
- 1 January 1971
- journal article
- Published by American Society for Horticultural Science in Journal of the American Society for Horticultural Science
- Vol. 96 (1) , 10-14
- https://doi.org/10.21273/jashs.96.1.10
Abstract
A procedure for the extraction and fractionation of nucleic acids from citrus tissues was developed. Typical elution profiles of nucleic acids extracted from leaves, root tips, flowers, and fruits at different stages of development showed the well-known peaks of s-RNA, DNA, lr-RNA, and hr-RNA. In flowers and, especially, in young fruits the additional X-RNA peak was also present following the hr-RNA peak. The level of nucleic acids decreased markedly in the young fruit on the dry matter basis during the first 3 months of growth, mostly due to decrease in hr-RNA. During maturation the RNA fractions in the albedo decreased, while it increased in the flavedo due to increase in hr-RNA content. The fast growth of the young fruit apparently is accompanied by intensive metabolization or turnover of nucleic acids, rather than by dilution.Keywords
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