Phyllotactic transitions in the vascular system of Populus deltoides bartr. as determined by (14)C labeling.
Identifieur interne : 004E72 ( Main/Exploration ); précédent : 004E71; suivant : 004E73Phyllotactic transitions in the vascular system of Populus deltoides bartr. as determined by (14)C labeling.
Auteurs : P R Larson [États-Unis]Source :
- Planta [ 0032-0935 ] ; 1977.
Abstract
Populus deltoides seedlings progress through 2/5, 3/8, and 5/13 orders of phyllotaxis in attaining Plastochron Index 16 (PI 16). The manner in which the vascular system was reoriented during these phyllotactic transitions was determined by anatomical analysis of serial microsections, whereas the positions of the transitions were determined by (14)C labeling. The midvein at the tip of leaves representing plants of different PI and leaves of different Leaf Plastochron Index (LPI) was fed (14)CO2 photosynthetically, and primordia LPI 0 through LPI-9 were dissected from the buds and analyzed for (14)C. By combining the labeling data with the anatomical observations it was possible to reconstruct the vascular system of a plant of PI 16 and to locate the phyllotactic transitions. Both the anatomical and the labeling data showed a high degree of reproducibility among plants suggesting that the phyllotactic pattern to which the vascular system conforms may be programmed in the plant and transmitted acropetally through the developing leaves and procambial strands. The origin of new primordia and the concepts of orthostichy, ontogenetic helix, and Fibonacci sequence are discussed as they apply to the vascular system of P. deltoides.
DOI: 10.1007/BF00384188
PubMed: 24419777
Affiliations:
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The manner in which the vascular system was reoriented during these phyllotactic transitions was determined by anatomical analysis of serial microsections, whereas the positions of the transitions were determined by (14)C labeling. The midvein at the tip of leaves representing plants of different PI and leaves of different Leaf Plastochron Index (LPI) was fed (14)CO2 photosynthetically, and primordia LPI 0 through LPI-9 were dissected from the buds and analyzed for (14)C. By combining the labeling data with the anatomical observations it was possible to reconstruct the vascular system of a plant of PI 16 and to locate the phyllotactic transitions. Both the anatomical and the labeling data showed a high degree of reproducibility among plants suggesting that the phyllotactic pattern to which the vascular system conforms may be programmed in the plant and transmitted acropetally through the developing leaves and procambial strands. The origin of new primordia and the concepts of orthostichy, ontogenetic helix, and Fibonacci sequence are discussed as they apply to the vascular system of P. deltoides. </div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">24419777</PMID><DateCompleted><Year>2014</Year><Month>01</Month><Day>15</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0032-0935</ISSN><JournalIssue CitedMedium="Print"><Volume>134</Volume><Issue>3</Issue><PubDate><Year>1977</Year><Month>Jan</Month></PubDate></JournalIssue><Title>Planta</Title><ISOAbbreviation>Planta</ISOAbbreviation></Journal><ArticleTitle>Phyllotactic transitions in the vascular system of Populus deltoides bartr. as determined by (14)C labeling.</ArticleTitle><Pagination><MedlinePgn>241-9</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/BF00384188</ELocationID><Abstract><AbstractText>Populus deltoides seedlings progress through 2/5, 3/8, and 5/13 orders of phyllotaxis in attaining Plastochron Index 16 (PI 16). The manner in which the vascular system was reoriented during these phyllotactic transitions was determined by anatomical analysis of serial microsections, whereas the positions of the transitions were determined by (14)C labeling. The midvein at the tip of leaves representing plants of different PI and leaves of different Leaf Plastochron Index (LPI) was fed (14)CO2 photosynthetically, and primordia LPI 0 through LPI-9 were dissected from the buds and analyzed for (14)C. By combining the labeling data with the anatomical observations it was possible to reconstruct the vascular system of a plant of PI 16 and to locate the phyllotactic transitions. Both the anatomical and the labeling data showed a high degree of reproducibility among plants suggesting that the phyllotactic pattern to which the vascular system conforms may be programmed in the plant and transmitted acropetally through the developing leaves and procambial strands. The origin of new primordia and the concepts of orthostichy, ontogenetic helix, and Fibonacci sequence are discussed as they apply to the vascular system of P. deltoides. </AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Larson</LastName><ForeName>P R</ForeName><Initials>PR</Initials><AffiliationInfo><Affiliation>North Central Forest Experiment Station, U.S. Department of Agriculture, Forest Service, Box 898, 54501, Rhinelander, WI, USA.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>Planta</MedlineTA><NlmUniqueID>1250576</NlmUniqueID><ISSNLinking>0032-0935</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>1976</Year><Month>10</Month><Day>11</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>1976</Year><Month>12</Month><Day>14</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>1</Month><Day>15</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>1977</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1977</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">24419777</ArticleId><ArticleId IdType="doi">10.1007/BF00384188</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Plant Physiol. 1975 Aug;56(2):185-93</Citation><ArticleIdList><ArticleId IdType="pubmed">16659271</ArticleId></ArticleIdList></Reference><Reference><Citation>Planta. 1973 Jun;111(2):95-112</Citation><ArticleIdList><ArticleId IdType="pubmed">24469506</ArticleId></ArticleIdList></Reference><Reference><Citation>Nature. 1952 Jun 21;169(4312):1052-3</Citation><ArticleIdList><ArticleId IdType="pubmed">14941103</ArticleId></ArticleIdList></Reference><Reference><Citation>Symp Soc Exp Biol. 1971;25:301-22</Citation><ArticleIdList><ArticleId IdType="pubmed">5117398</ArticleId></ArticleIdList></Reference><Reference><Citation>Planta. 1976 Jan;128(3):185-93</Citation><ArticleIdList><ArticleId IdType="pubmed">24430745</ArticleId></ArticleIdList></Reference><Reference><Citation>J Theor Biol. 1974 May;45(1):1-79</Citation><ArticleIdList><ArticleId IdType="pubmed">4836880</ArticleId></ArticleIdList></Reference><Reference><Citation>J Theor Biol. 1975 Sep;53(2):435-44</Citation><ArticleIdList><ArticleId IdType="pubmed">1195771</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Wisconsin</li></region></list><tree><country name="États-Unis"><region name="Wisconsin"><name sortKey="Larson, P R" sort="Larson, P R" uniqKey="Larson P" first="P R" last="Larson">P R Larson</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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