A preliminary investigation of the role of auxin and cytokinin in sylleptic branching of three hybrid poplar clones exhibiting contrasting degrees of sylleptic branching.
Identifieur interne : 004600 ( Main/Curation ); précédent : 004599; suivant : 004601A preliminary investigation of the role of auxin and cytokinin in sylleptic branching of three hybrid poplar clones exhibiting contrasting degrees of sylleptic branching.
Auteurs : Morris G. Cline [États-Unis] ; Kim Dong-IlSource :
- Annals of botany [ 0305-7364 ] ; 2002.
Descripteurs français
- KwdFr :
- Acides indolacétiques (pharmacologie), Acides naphtalèneacétiques (pharmacologie), Adénine (analogues et dérivés), Adénine (pharmacologie), Composés benzyliques (MeSH), Cytokinine (pharmacologie), Facteurs temps (MeSH), Kinétine (pharmacologie), Populus (anatomie et histologie), Populus (croissance et développement), Populus (effets des médicaments et des substances chimiques), Pousses de plante (anatomie et histologie), Pousses de plante (croissance et développement), Pousses de plante (effets des médicaments et des substances chimiques), Purines (MeSH).
- MESH :
- analogues et dérivés : Adénine.
- anatomie et histologie : Populus, Pousses de plante.
- croissance et développement : Populus, Pousses de plante.
- effets des médicaments et des substances chimiques : Populus, Pousses de plante.
- pharmacologie : Acides indolacétiques, Acides naphtalèneacétiques, Adénine, Cytokinine, Kinétine.
- Composés benzyliques, Facteurs temps, Purines.
English descriptors
- KwdEn :
- Adenine (analogs & derivatives), Adenine (pharmacology), Benzyl Compounds (MeSH), Cytokinins (pharmacology), Indoleacetic Acids (pharmacology), Kinetin (pharmacology), Naphthaleneacetic Acids (pharmacology), Plant Shoots (anatomy & histology), Plant Shoots (drug effects), Plant Shoots (growth & development), Populus (anatomy & histology), Populus (drug effects), Populus (growth & development), Purines (MeSH), Time Factors (MeSH).
- MESH :
- chemical , analogs & derivatives : Adenine.
- chemical , pharmacology : Adenine, Cytokinins, Indoleacetic Acids, Kinetin, Naphthaleneacetic Acids.
- chemical : Benzyl Compounds, Purines.
- anatomy & histology : Plant Shoots, Populus.
- drug effects : Plant Shoots, Populus.
- growth & development : Plant Shoots, Populus.
- Time Factors.
Abstract
Sylleptic branches grow out from lateral buds during the same growing season in which the buds are formed. This type of branching is present in poplar and in many tropical species. It results in the production of more branches, more leaves and expanded photosynthetic capacity and is thought to assist in increasing the overall growth and biomass of the tree at a young age. However, very little is known about the physiology of sylleptic branching in poplar, which is an extremely important source of fibre and fuel. In the present study of three hybrid poplar clones (11-11, 47-174 and 49-177) of Populus trichocarpa x P. deltoides exhibiting contrasting degrees of sylleptic branching, an analysis was carried out on parent shoot elongation and sylleptic branching, together with a preliminary comparison of the parent shoots' sensitivity to auxin (naphthaleneacetic acid) as a repressor of lateral bud outgrowth, and cytokinin (benzyladenine) as a promoter. Suggestive evidence was found for an inverse correlation between parent shoot sensitivity to auxin and the degree of sylleptic branching, as well as a partially positive correlation with respect to sensitivity to cytokinin. The present data are consistent with the hypothesis that auxin and cytokinin may play repressive and promotive roles, respectively, in the sylleptic branching of hybrid poplar.
DOI: 10.1093/aob/mcf195
PubMed: 12234154
PubMed Central: PMC4240395
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This type of branching is present in poplar and in many tropical species. It results in the production of more branches, more leaves and expanded photosynthetic capacity and is thought to assist in increasing the overall growth and biomass of the tree at a young age. However, very little is known about the physiology of sylleptic branching in poplar, which is an extremely important source of fibre and fuel. In the present study of three hybrid poplar clones (11-11, 47-174 and 49-177) of Populus trichocarpa x P. deltoides exhibiting contrasting degrees of sylleptic branching, an analysis was carried out on parent shoot elongation and sylleptic branching, together with a preliminary comparison of the parent shoots' sensitivity to auxin (naphthaleneacetic acid) as a repressor of lateral bud outgrowth, and cytokinin (benzyladenine) as a promoter. Suggestive evidence was found for an inverse correlation between parent shoot sensitivity to auxin and the degree of sylleptic branching, as well as a partially positive correlation with respect to sensitivity to cytokinin. The present data are consistent with the hypothesis that auxin and cytokinin may play repressive and promotive roles, respectively, in the sylleptic branching of hybrid poplar.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">12234154</PMID><DateCompleted><Year>2003</Year><Month>02</Month><Day>25</Day></DateCompleted><DateRevised><Year>2019</Year><Month>05</Month><Day>13</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0305-7364</ISSN><JournalIssue CitedMedium="Print"><Volume>90</Volume><Issue>3</Issue><PubDate><Year>2002</Year><Month>Sep</Month></PubDate></JournalIssue><Title>Annals of botany</Title><ISOAbbreviation>Ann Bot</ISOAbbreviation></Journal><ArticleTitle>A preliminary investigation of the role of auxin and cytokinin in sylleptic branching of three hybrid poplar clones exhibiting contrasting degrees of sylleptic branching.</ArticleTitle><Pagination><MedlinePgn>417-21</MedlinePgn></Pagination><Abstract><AbstractText>Sylleptic branches grow out from lateral buds during the same growing season in which the buds are formed. This type of branching is present in poplar and in many tropical species. It results in the production of more branches, more leaves and expanded photosynthetic capacity and is thought to assist in increasing the overall growth and biomass of the tree at a young age. However, very little is known about the physiology of sylleptic branching in poplar, which is an extremely important source of fibre and fuel. In the present study of three hybrid poplar clones (11-11, 47-174 and 49-177) of Populus trichocarpa x P. deltoides exhibiting contrasting degrees of sylleptic branching, an analysis was carried out on parent shoot elongation and sylleptic branching, together with a preliminary comparison of the parent shoots' sensitivity to auxin (naphthaleneacetic acid) as a repressor of lateral bud outgrowth, and cytokinin (benzyladenine) as a promoter. Suggestive evidence was found for an inverse correlation between parent shoot sensitivity to auxin and the degree of sylleptic branching, as well as a partially positive correlation with respect to sensitivity to cytokinin. 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PubStatus="pubmed"><Year>2002</Year><Month>9</Month><Day>18</Day><Hour>10</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2003</Year><Month>2</Month><Day>26</Day><Hour>4</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2002</Year><Month>9</Month><Day>18</Day><Hour>10</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">12234154</ArticleId><ArticleId IdType="pmc">PMC4240395</ArticleId><ArticleId IdType="doi">10.1093/aob/mcf195</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Am J Bot. 2000 Feb;87(2):182-90</Citation><ArticleIdList><ArticleId IdType="pubmed">10675304</ArticleId></ArticleIdList></Reference><Reference><Citation>Plant Physiol. 2000 Jun;123(2):689-98</Citation><ArticleIdList><ArticleId IdType="pubmed">10859199</ArticleId></ArticleIdList></Reference><Reference><Citation>Tree Physiol. 1986 Sep;1(2):193-207</Citation><ArticleIdList><ArticleId IdType="pubmed">14975896</ArticleId></ArticleIdList></Reference><Reference><Citation>Genetics. 1995 Feb;139(2):963-73</Citation><ArticleIdList><ArticleId IdType="pubmed">7713445</ArticleId></ArticleIdList></Reference><Reference><Citation>Proc Natl Acad Sci U S A. 1933 Jul;19(7):714-6</Citation><ArticleIdList><ArticleId IdType="pubmed">16577553</ArticleId></ArticleIdList></Reference><Reference><Citation>Tree Physiol. 1990 Dec;7(1_2_3_4):157-167</Citation><ArticleIdList><ArticleId IdType="pubmed">14972913</ArticleId></ArticleIdList></Reference><Reference><Citation>Curr Top Dev Biol. 1999;44:127-69</Citation><ArticleIdList><ArticleId IdType="pubmed">9891879</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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