Dose responses of auxins
Identifieur interne : 004436 ( Main/Exploration ); précédent : 004435; suivant : 004437Dose responses of auxins
Auteurs : Per Nissen [Norvège]Source :
- Physiologia Plantarum [ 0031-9317 ] ; 1985-12.
English descriptors
Abstract
Published data for the most widely used bioassays for auxins as. well as other auxin‐induced responses, have been analyzed to determine whether the response is ultrasensitive, hyperbolic or subsensitive, i.e. whether the change from 10 to 90% of maximal response requires less than, equal to or more than an 81‐fold increase in external auxin concentration. Auxin‐dependent callus growth is most often ultrasensitive. Other responses, including the curvature of Avena coleoptiles, may show simple Mi‐chaelis‐Menten kinetics. In the majority of cases, however, the response is sub‐sensitive, often very markedly so. The finding of subsensitive responses is consistent with the proposal by A. J. Trewavas that plant development is regulated by changes in the sensitivity to plant growth substances. Detailed data for subsensitive dose responses, particularly auxin‐induced inhibition of root growth, can often be precisely represented by bi‐ or multiphasic isotherms, with the phases separated by sharp transitions. The relationship to auxin uptake and the relationship, if any, between carriers and receptors for auxins remain to be elucidated.
Url:
DOI: 10.1111/j.1399-3054.1985.tb08659.x
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 001746
- to stream Istex, to step Curation: 001745
- to stream Istex, to step Checkpoint: 001682
- to stream Main, to step Merge: 004853
- to stream Main, to step Curation: 004436
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Dose responses of auxins</title><author><name sortKey="Nissen, Per" sort="Nissen, Per" uniqKey="Nissen P" first="Per" last="Nissen">Per Nissen</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:C101362048455A1B2C23940ACAB8135B14644BFF</idno><date when="1985" year="1985">1985</date><idno type="doi">10.1111/j.1399-3054.1985.tb08659.x</idno><idno type="url">https://api.istex.fr/document/C101362048455A1B2C23940ACAB8135B14644BFF/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001746</idno><idno type="wicri:Area/Istex/Curation">001745</idno><idno type="wicri:Area/Istex/Checkpoint">001682</idno><idno type="wicri:doubleKey">0031-9317:1985:Nissen P:dose:responses:of</idno><idno type="wicri:Area/Main/Merge">004853</idno><idno type="wicri:Area/Main/Curation">004436</idno><idno type="wicri:Area/Main/Exploration">004436</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Dose responses of auxins</title><author><name sortKey="Nissen, Per" sort="Nissen, Per" uniqKey="Nissen P" first="Per" last="Nissen">Per Nissen</name><affiliation wicri:level="1"><country xml:lang="fr">Norvège</country><wicri:regionArea>Dept of Microbiology and Plant Physiology, Univ. of Bergen, N‐5000 Bergen</wicri:regionArea><wicri:noRegion>N‐5000 Bergen</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Physiologia Plantarum</title><idno type="ISSN">0031-9317</idno><idno type="eISSN">1399-3054</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1985-12">1985-12</date><biblScope unit="volume">65</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="357">357</biblScope><biblScope unit="page" to="374">374</biblScope></imprint><idno type="ISSN">0031-9317</idno></series><idno type="istex">C101362048455A1B2C23940ACAB8135B14644BFF</idno><idno type="DOI">10.1111/j.1399-3054.1985.tb08659.x</idno><idno type="ArticleID">PPL357</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0031-9317</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>2,4‐D</term><term>Auxin bioassays</term><term>IAA</term><term>multiphasic isotherms</term><term>sub‐sensitive response</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Published data for the most widely used bioassays for auxins as. well as other auxin‐induced responses, have been analyzed to determine whether the response is ultrasensitive, hyperbolic or subsensitive, i.e. whether the change from 10 to 90% of maximal response requires less than, equal to or more than an 81‐fold increase in external auxin concentration. Auxin‐dependent callus growth is most often ultrasensitive. Other responses, including the curvature of Avena coleoptiles, may show simple Mi‐chaelis‐Menten kinetics. In the majority of cases, however, the response is sub‐sensitive, often very markedly so. The finding of subsensitive responses is consistent with the proposal by A. J. Trewavas that plant development is regulated by changes in the sensitivity to plant growth substances. Detailed data for subsensitive dose responses, particularly auxin‐induced inhibition of root growth, can often be precisely represented by bi‐ or multiphasic isotherms, with the phases separated by sharp transitions. The relationship to auxin uptake and the relationship, if any, between carriers and receptors for auxins remain to be elucidated.</div></front></TEI><affiliations><list><country><li>Norvège</li></country></list><tree><country name="Norvège"><noRegion><name sortKey="Nissen, Per" sort="Nissen, Per" uniqKey="Nissen P" first="Per" last="Nissen">Per Nissen</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Bois/explor/OrangerV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 004436 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 004436 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Bois
|area= OrangerV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:C101362048455A1B2C23940ACAB8135B14644BFF
|texte= Dose responses of auxins
}}
| This area was generated with Dilib version V0.6.25. |  |