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Literature DB >> 16592068

Biosynthesis of cytokinins in cytokinin-autotrophic tobacco callus.

Abstract

A cytokinin-autotrophic strain of tobacco callus contained cytokinin-active compounds with chromatographic mobilities on Sephadex LH-20 corresponding to ribosylzeatin, zeatin, and 6-Delta(2)-isopentenylaminopurine. Zeatin, the apparent major cytokinin, was estimated to be present at a concentration of 10(-4) mumol/kg of tissue. Cytokinin-autotrophic callus supplied with [(14)C]adenine produced radioactive components with the same chromatographic properties as zeatin and 6-Delta(2)-isopentenylaminopurine. These components were not obtained from cytokinin-dependent tissue supplied with [(14)C]adenine in the same manner.

Entities: Chemical Species

Year: 1973 PMID： 16592068 PMCID： PMC433328 DOI： 10.1073/pnas.70.3.658

Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205

4 in total

1. A soluble ribonucleic acid intermediate in protein synthesis.

Authors: M B HOAGLAND; M L STEPHENSON; J F SCOTT; L I HECHT; P C ZAMECNIK
Journal: J Biol Chem Date: 1958-03 Impact factor: 5.157

2. Isolation of cytokinins from tRNA.

Authors: D J Armstrong; W J Burrows; P K Evans; F Skoog
Journal: Biochem Biophys Res Commun Date: 1969-10-22 Impact factor: 3.575

3. Isolation and identification of cytokinins located in the transfer ribonucleic acid of tobacco callus grown in the presence of 6-benzylaminopurine.

Authors: W J Burrows; F Skoog; N J Leonard
Journal: Biochemistry Date: 1971-06-08 Impact factor: 3.162

4. N-(Delta-Isopentenyl)adenosine: Its Occurrence as a Free Nucleoside in an Autonomous Strain of Tobacco Tissue.

Authors: W H Dyson; R H Hall
Journal: Plant Physiol Date: 1972-11 Impact factor: 8.340

4 in total

19 in total

Review 4. Shemin pathway and peroxidase deficiency in a fully habituated and fully heterotrophic non-organogenic sugarbeet callus: an adaptative strategy or the consequence of modified hormonal balances and sensitivities in these cancerous cells? A review and reassessment.

Authors: T Gaspar; C Kevers; B Bisbis; C Penel; H Greppin; F Garnier; M Rideau; C Huault; J P Billard; J M Foidart
Journal: Cell Prolif Date: 1999-10 Impact factor: 6.831

5. Epigenetic variation of cultured somatic cells: evidence for gradual changes in the requirement for factors promoting cell division.

Authors: F Meins; A Binns
Journal: Proc Natl Acad Sci U S A Date: 1977-07 Impact factor: 11.205

Biosynthesis of cytokinins in cytokinin-autotrophic tobacco callus.

1. A soluble ribonucleic acid intermediate in protein synthesis.

2. Isolation of cytokinins from tRNA.

3. Isolation and identification of cytokinins located in the transfer ribonucleic acid of tobacco callus grown in the presence of 6-benzylaminopurine.

4. N-(Delta-Isopentenyl)adenosine: Its Occurrence as a Free Nucleoside in an Autonomous Strain of Tobacco Tissue.

1. Habituation of tobacco pith cells for factors promoting cell division is heritable and potentially reversible.

2. Modification of cytokinins by cauliflower microsomal enzymes.

3. Cold-sensitive expression of cytokinin habituation by tobacco pith cells in culture.

Review 4. Shemin pathway and peroxidase deficiency in a fully habituated and fully heterotrophic non-organogenic sugarbeet callus: an adaptative strategy or the consequence of modified hormonal balances and sensitivities in these cancerous cells? A review and reassessment.

5. Epigenetic variation of cultured somatic cells: evidence for gradual changes in the requirement for factors promoting cell division.

6. Cytokinin effects on growth of quiescent tobacco pith cells.

7. Cytokinins in Vinca rosea L. Crown Gall Tumor Tissue as Influenced by Compounds Containing Reduced Nitrogen.

8. Two effects of cytokinin on the auxin requirement of tobacco callus cultures.

9. 5-Bromodeoxyuridine: A specific inhibitor of cytokinin-habituation in tobacco cell culture.

10. Reversal of the neoplastic state in plants.