| Effects of protein inhibitors and auxin on nucleic Acid metabolism in peanut cotyledons. | |
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MedLine Citation:
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PMID: 16656356 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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The accumulation of labeled phosphorus into newly synthesized nucleic acids or peanut cotyledon slices incubated with chloramphenicol, puromycin, or 2,4-dichlorophenoxyacetic acid (2,4-D) was reduced. Promotion of nucleic acid synthesis was not noted by any of these chemicals. Chloramphenicol completely inhibited the synthesis of the DNA-RNA fraction at 1.25 x 10(-3)m while soluble and ribosomal RNA was inhibited by 70% and 80%, respectively. At the same concentration messenger RNA was inhibited by only 40%. These effects suggest that chloramphenicol inhibit nucleic acid synthesis in peanut cotyledons in a differential manner. Similar results were noted for DNA at low concentrations of 2,4-D. However, at high concentrations of 2,4-D, DNA as well as RNA fractions were inhibited in a similar manner at a given concentration. Puromycin did not differentially inhibit nucleic acid synthesis except at 2 x 10(-3)m where DNA was least inhibited.Nondifferential inhibition suggests that a common site or precursor pool essential for the synthesis of all nucleic acid fractions is altered. Differential inhibition may be due to the interference with a specific rate-limiting step, directly or indirectly, in the formation of a particular nucleic acid. |
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Authors:
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W J Carpenter; J H Cherry |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Plant physiology Volume: 41 ISSN: 0032-0889 ISO Abbreviation: Plant Physiol. Publication Date: 1966 Jun |
Date Detail:
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Created Date: 2010-06-29 Completed Date: 2010-06-29 Revised Date: 2010-09-14 |
Medline Journal Info:
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Nlm Unique ID: 0401224 Medline TA: Plant Physiol Country: United States |
Other Details:
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Languages: eng Pagination: 919-22 Citation Subset: - |
Affiliation:
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Department of Horticulture, Purdue University, Lafayette, Indiana. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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