Protein Synthesis in Abscission: The Distinctiveness of the Abscission Zone and its Response to Gibberellic Acid and Indoleacetic Acid
Identifieur interne : 001382 ( Pmc/Checkpoint ); précédent : 001381; suivant : 001383Protein Synthesis in Abscission: The Distinctiveness of the Abscission Zone and its Response to Gibberellic Acid and Indoleacetic Acid
Auteurs : Lowell N. Lewis ; Jagdish C. BakhshiSource :
- Plant Physiology [ 0032-0889 ] ; 1968.
Abstract
Abscission zone tissue of citrus was shown to have a higher rate of protein synthesis than tissue distal or proximal to it, based on the incorporation of leucine-1-14C. The proximal tissue had the slowest rate of protein synthesis. As the tissue approached abscission, the rate of synthesis in the abscission zone decreased and the differences in rate of protein synthesis between the 3 zones almost disappeared. IAA, which delayed abscission, maintained the protein synthesis gradient between the abscission and proximal zones, but the distal zone tissue was as active in protein synthesis as the abscission zone. Differences in uptake of the leucine were also observed between different zones and treatments. Regardless of the tissue or the treatment, there was a sharp increase in uptake at the 24 hour point.
Direct incubation of abscission zones in IAA and gibberellic acid (GA) indicated that the action of gibberellic acid on abscission is probably through a stimulation of protein synthesis, while IAA seems to act by maintaining the existing rate of protein synthesis in the cells of the abscission zone.
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PubMed: 16656771
PubMed Central: 1086846
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Protein Synthesis in Abscission: The Distinctiveness of the Abscission Zone and its Response to Gibberellic Acid and Indoleacetic Acid</title><author><name sortKey="Lewis, Lowell N" sort="Lewis, Lowell N" uniqKey="Lewis L" first="Lowell N." last="Lewis">Lowell N. Lewis</name></author><author><name sortKey="Bakhshi, Jagdish C" sort="Bakhshi, Jagdish C" uniqKey="Bakhshi J" first="Jagdish C." last="Bakhshi">Jagdish C. Bakhshi</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">16656771</idno><idno type="pmc">1086846</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1086846</idno><idno type="RBID">PMC:1086846</idno><date when="1968">1968</date><idno type="wicri:Area/Pmc/Corpus">000848</idno><idno type="wicri:Area/Pmc/Curation">000847</idno><idno type="wicri:Area/Pmc/Checkpoint">001382</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Protein Synthesis in Abscission: The Distinctiveness of the Abscission Zone and its Response to Gibberellic Acid and Indoleacetic Acid</title><author><name sortKey="Lewis, Lowell N" sort="Lewis, Lowell N" uniqKey="Lewis L" first="Lowell N." last="Lewis">Lowell N. Lewis</name></author><author><name sortKey="Bakhshi, Jagdish C" sort="Bakhshi, Jagdish C" uniqKey="Bakhshi J" first="Jagdish C." last="Bakhshi">Jagdish C. Bakhshi</name></author></analytic><series><title level="j">Plant Physiology</title><idno type="ISSN">0032-0889</idno><idno type="eISSN">1532-2548</idno><imprint><date when="1968">1968</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>Abscission zone tissue of citrus was shown to have a higher rate of protein synthesis than tissue distal or proximal to it, based on the incorporation of leucine-1-<sup>14</sup>C. The proximal tissue had the slowest rate of protein synthesis. As the tissue approached abscission, the rate of synthesis in the abscission zone decreased and the differences in rate of protein synthesis between the 3 zones almost disappeared. IAA, which delayed abscission, maintained the protein synthesis gradient between the abscission and proximal zones, but the distal zone tissue was as active in protein synthesis as the abscission zone. Differences in uptake of the leucine were also observed between different zones and treatments. Regardless of the tissue or the treatment, there was a sharp increase in uptake at the 24 hour point.</p><p>Direct incubation of abscission zones in IAA and gibberellic acid (GA) indicated that the action of gibberellic acid on abscission is probably through a stimulation of protein synthesis, while IAA seems to act by maintaining the existing rate of protein synthesis in the cells of the abscission zone.</p></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Plant Physiol</journal-id><journal-title>Plant Physiology</journal-title><issn pub-type="ppub">0032-0889</issn><issn pub-type="epub">1532-2548</issn></journal-meta><article-meta><article-id pub-id-type="pmid">16656771</article-id><article-id pub-id-type="pmc">1086846</article-id><article-categories><subj-group subj-group-type="heading"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Protein Synthesis in Abscission: The Distinctiveness of the Abscission Zone and its Response to Gibberellic Acid and Indoleacetic Acid</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Lewis</surname><given-names>Lowell N.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Bakhshi</surname><given-names>Jagdish C.</given-names></name><xref ref-type="author-notes" rid="au1">1</xref></contrib></contrib-group><aff id="af1">University of California, Riverside, California</aff><author-notes><fn id="au1"><label>1</label><p> Present address: Punjab Agricultural University, Hissar, India.</p></fn></author-notes><pub-date pub-type="ppub"><month>03</month><year>1968</year></pub-date><volume>43</volume><issue>3</issue><fpage>359</fpage><lpage>364</lpage><abstract><p>Abscission zone tissue of citrus was shown to have a higher rate of protein synthesis than tissue distal or proximal to it, based on the incorporation of leucine-1-<sup>14</sup>C. The proximal tissue had the slowest rate of protein synthesis. As the tissue approached abscission, the rate of synthesis in the abscission zone decreased and the differences in rate of protein synthesis between the 3 zones almost disappeared. IAA, which delayed abscission, maintained the protein synthesis gradient between the abscission and proximal zones, but the distal zone tissue was as active in protein synthesis as the abscission zone. Differences in uptake of the leucine were also observed between different zones and treatments. Regardless of the tissue or the treatment, there was a sharp increase in uptake at the 24 hour point.</p><p>Direct incubation of abscission zones in IAA and gibberellic acid (GA) indicated that the action of gibberellic acid on abscission is probably through a stimulation of protein synthesis, while IAA seems to act by maintaining the existing rate of protein synthesis in the cells of the abscission zone.</p></abstract></article-meta></front></pmc><affiliations><list></list><tree><noCountry><name sortKey="Bakhshi, Jagdish C" sort="Bakhshi, Jagdish C" uniqKey="Bakhshi J" first="Jagdish C." last="Bakhshi">Jagdish C. Bakhshi</name><name sortKey="Lewis, Lowell N" sort="Lewis, Lowell N" uniqKey="Lewis L" first="Lowell N." last="Lewis">Lowell N. Lewis</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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