Molekularna struktura i auksinska aktivnost 2-alkilindol-3-octenih kiselina

Snjezana Antolic; Eduard Dolusic; Biserka Kojic-Prodic; Erika Kozic; Volker Magnus

Molekularna struktura i auksinska aktivnost 2-alkilindol-3-octenih kiselina

Snjezana Antolic, Eduard Dolusic, Biserka Kojic-Prodic, Erika Kozic, Volker Magnus

Namur Research Institute for Life Sciences

Résultats de recherche: Contribution à un événement scientifique (non publié) › Poster

Résumé

In general, the auxin activity of indole-3-acetic acid decreases gradually when alkyl substituents of increasing chain length are attached to its ring-carbons. Only for the 2-position, Kögl and Kostermans (Hoppe Seyler's Z. physiol. Chem. 235, 201, 1935) claimed that any substituent larger than a methyl group rendered the molecule inactive. We showed, however, that the '2-ethylindole-3-acetic acid' they used in their experiments is, in reality, 3-methylindole-2-propionic acid. The proper 2-ethylindole-3-acetic acid and its 2-propyl homologue were prepared by a different route and characterized by NMR spectroscopy and X-ray crystallography. Both compounds showed auxin activity in the Avena coleoptile-section straight-growth test, with dose-response curves similar to those of 2-methylindole-3-acetic acid, i. e. not quite as high as for co-assayed indole-3-acetic acid and shifted by about one order of magnitude towards higher concentrations.

Titre traduit de la contribution	Molecular structure and auxin activity of 2-alkyl-indole-3-acetic acids
langue originale	autre
Pages	Zbornik sazetaka priopcenja Sedmog hrvatskog bioloskog kongresa, Hvar, Hrvatska, 24.09-29.09.2000, pp. 91-91
Etat de la publication	Publié - 2000
Evénement	Sedmi hrvatski bioloski kongres - Hvar, Croatie Durée: 24 sept. 2000 → 29 sept. 2000

Une conférence

Une conférence	Sedmi hrvatski bioloski kongres
Pays/Territoire	Croatie
La ville	Hvar
période	24/09/00 → 29/09/00

mots-clés

2-etilindol-3-octena kiselina
bioloska aktivnost
auksin
2-propilindol-3-octena kiselina
2-metilindol-3-octena kiselina
molekularna struktura

4 Article dans les actes d'une conférence/un colloque
2 Article

Auxin activity and molecular structure of 2-alkylindole-3-acetic acids
Antolic, S., Dolusic, E., Kozic, E. K., Kojic-Prodic, B., Magnus, V., Ramek, M. & Tomic, S., 2003, Dans: Plant Growth Regulation. 39, 3, p. 235-252 18 p.
Résultats de recherche: Contribution à un journal/une revue › Article › Revue par des pairs

Accès ouvert
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Molecular recognition of auxins - a rational approach to plant growth regulation
Antolic, S., Dolusic, E., Bertosa, B., Kojic-Prodic, B., Magnus, V., Salopek-Sondi, B. & Tomic, S., 2002, Book of Abstracts, First Croatian Congress on Molecular Life Sciences, Opatija, Croatia, 09-13.06.2002. p. 84-84 1 p.
Résultats de recherche: Contribution dans un livre/un catalogue/un rapport/dans les actes d'une conférence › Article dans les actes d'une conférence/un colloque
Molecular recognition of the plant hormone auxin is still a puzzle
Kojic-Prodic, B., Magnus, V., Tomic, S., Antolic, S., Salopek-Sondi, B., Dolusic, E. & Bertosa, B., 2002, Abstracts, XIX Congress and General Assembly of the International Union of Crystallography, Geneva, Switzerland, 06.-15.08.2002. Vol A58. p. C139-C139 1 p. (Acta Crystallographica; Vol A58).
Résultats de recherche: Contribution dans un livre/un catalogue/un rapport/dans les actes d'une conférence › Article dans les actes d'une conférence/un colloque

2 Participation à une conférence, un congrès

Sedmi hrvatski bioloski kongres
Dolusic, E. (Orateur)
24 sept. 2000 → 29 sept. 2000
Activité: Participation ou organisation d'un événement › Participation à une conférence, un congrès
6th Congress of Croatian Biologists, Opatija, Croatia
Dolusic, E. (Poster)
22 sept. 1997 → 26 sept. 1997
Activité: Participation ou organisation d'un événement › Participation à une conférence, un congrès

Contient cette citation

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title = "Molekularna struktura i auksinska aktivnost 2-alkilindol-3-octenih kiselina",

abstract = "In general, the auxin activity of indole-3-acetic acid decreases gradually when alkyl substituents of increasing chain length are attached to its ring-carbons. Only for the 2-position, K{\"o}gl and Kostermans (Hoppe Seyler's Z. physiol. Chem. 235, 201, 1935) claimed that any substituent larger than a methyl group rendered the molecule inactive. We showed, however, that the '2-ethylindole-3-acetic acid' they used in their experiments is, in reality, 3-methylindole-2-propionic acid. The proper 2-ethylindole-3-acetic acid and its 2-propyl homologue were prepared by a different route and characterized by NMR spectroscopy and X-ray crystallography. Both compounds showed auxin activity in the Avena coleoptile-section straight-growth test, with dose-response curves similar to those of 2-methylindole-3-acetic acid, i. e. not quite as high as for co-assayed indole-3-acetic acid and shifted by about one order of magnitude towards higher concentrations. ",

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author = "Snjezana Antolic and Eduard Dolusic and Biserka Kojic-Prodic and Erika Kozic and Volker Magnus",

note = "Zbornik sazetaka priopcenja Sedmog hrvatskog bioloskog kongresa, Hvar, Hrvatska, 24.09-29.09.2000, pp. 91-91; Sedmi hrvatski bioloski kongres ; Conference date: 24-09-2000 Through 29-09-2000",

year = "2000",

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pages = "Zbornik sazetaka priopcenja Sedmog hrvatskog bioloskog kongresa, Hvar, Hrvatska, 24.09--29.09.2000, pp. 91--91",

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Molekularna struktura i auksinska aktivnost 2-alkilindol-3-octenih kiselina. / Antolic, Snjezana; Dolusic, Eduard; Kojic-Prodic, Biserka et al.
2000. Zbornik sazetaka priopcenja Sedmog hrvatskog bioloskog kongresa, Hvar, Hrvatska, 24.09-29.09.2000, pp. 91-91 Poster présenté � Sedmi hrvatski bioloski kongres, Hvar, Croatie.

Résultats de recherche: Contribution à un événement scientifique (non publié) › Poster

TY - CONF

T1 - Molekularna struktura i auksinska aktivnost 2-alkilindol-3-octenih kiselina

AU - Antolic, Snjezana

AU - Dolusic, Eduard

AU - Kojic-Prodic, Biserka

AU - Kozic, Erika

AU - Magnus, Volker

N1 - Zbornik sazetaka priopcenja Sedmog hrvatskog bioloskog kongresa, Hvar, Hrvatska, 24.09-29.09.2000, pp. 91-91

PY - 2000

Y1 - 2000

N2 - In general, the auxin activity of indole-3-acetic acid decreases gradually when alkyl substituents of increasing chain length are attached to its ring-carbons. Only for the 2-position, Kögl and Kostermans (Hoppe Seyler's Z. physiol. Chem. 235, 201, 1935) claimed that any substituent larger than a methyl group rendered the molecule inactive. We showed, however, that the '2-ethylindole-3-acetic acid' they used in their experiments is, in reality, 3-methylindole-2-propionic acid. The proper 2-ethylindole-3-acetic acid and its 2-propyl homologue were prepared by a different route and characterized by NMR spectroscopy and X-ray crystallography. Both compounds showed auxin activity in the Avena coleoptile-section straight-growth test, with dose-response curves similar to those of 2-methylindole-3-acetic acid, i. e. not quite as high as for co-assayed indole-3-acetic acid and shifted by about one order of magnitude towards higher concentrations.

AB - In general, the auxin activity of indole-3-acetic acid decreases gradually when alkyl substituents of increasing chain length are attached to its ring-carbons. Only for the 2-position, Kögl and Kostermans (Hoppe Seyler's Z. physiol. Chem. 235, 201, 1935) claimed that any substituent larger than a methyl group rendered the molecule inactive. We showed, however, that the '2-ethylindole-3-acetic acid' they used in their experiments is, in reality, 3-methylindole-2-propionic acid. The proper 2-ethylindole-3-acetic acid and its 2-propyl homologue were prepared by a different route and characterized by NMR spectroscopy and X-ray crystallography. Both compounds showed auxin activity in the Avena coleoptile-section straight-growth test, with dose-response curves similar to those of 2-methylindole-3-acetic acid, i. e. not quite as high as for co-assayed indole-3-acetic acid and shifted by about one order of magnitude towards higher concentrations.

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KW - bioloska aktivnost

KW - auksin

KW - 2-propilindol-3-octena kiselina

KW - 2-metilindol-3-octena kiselina

KW - molekularna struktura

M3 - Poster

SP - Zbornik sazetaka priopcenja Sedmog hrvatskog bioloskog kongresa, Hvar, Hrvatska, 24.09-29.09.2000, pp. 91-91

T2 - Sedmi hrvatski bioloski kongres

Y2 - 24 September 2000 through 29 September 2000

ER -

Molekularna struktura i auksinska aktivnost 2-alkilindol-3-octenih kiselina

Résumé

Une conférence

mots-clés

Empreinte digitale

Résultat de recherche

Auxin activity and molecular structure of 2-alkylindole-3-acetic acids

Molecular recognition of auxins - a rational approach to plant growth regulation

Molecular recognition of the plant hormone auxin is still a puzzle

Activités

Sedmi hrvatski bioloski kongres

6th Congress of Croatian Biologists, Opatija, Croatia

Contient cette citation