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The effect of zeatin and iso-pentenyladenine on IAA transport from the shoot to the root of Pinus pinea seedlings
Year:
1996
Source of publication :
Plant Growth Regulation
Authors :
Atzmon, Nir
;
.
Volume :
19
Co-Authors:
Atzmon, N., Institute of Field and Garden Crops, Volcani Center, PO Box 6, Bet-Dagan 50250, Israel
Wiesman, Z., Institute of Horticulture, Agricultural Research Organization, Volcani Center, PO Box 6, Bet-Dagan 50250, Israel
Van Staden, J., NU Research Unit for Plant Growth and Development, Department of Botany Pietermaritzburg, University of Natal, Private Bag X01, Scottsville 3209, South Africa
Facilitators :
From page:
13
To page:
18
(
Total pages:
6
)
Abstract:
The tips of the tap roots of Pinus pinea seedlings were dipped in zeatin or iso-pentenyladenine solutions. Immediately after cytokinin application to the root tip or after a 24 h lag phase, [2-14C]IAA was applied to the shoot apex. Treating with zeatin resulted in an increase in [2-14C]IAA transport from the shoot to the root. Iso- pentenyladenine also caused a slight increase in transport of radioactivity to the root but this was less pronounced compared to the results obtained with zeatin. With zeatin treatment increasing amounts of radioactivity accumulated in the lateral root emerging zone of the tap root (Section III). This was in sharp contrast to the treatment with iso-pentenyladenine where little radioactivity accumulated in this section of the root. Recovery of radioactivity 48 h after applying [214C]IAA showed that 33% of the recovered radioactivity co-chromatographed with authentic IAA. The implications of the effect of different cytokinins on the distribution of radioactivity along the tap root of Pinus pinea following [2- 14C]IAA application to the shoot are discussed.
Note:
Related Files :
auxin transport
cytokinins
Pinus pinea
Root development
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More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29869
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:50
Scientific Publication
The effect of zeatin and iso-pentenyladenine on IAA transport from the shoot to the root of Pinus pinea seedlings
19
Atzmon, N., Institute of Field and Garden Crops, Volcani Center, PO Box 6, Bet-Dagan 50250, Israel
Wiesman, Z., Institute of Horticulture, Agricultural Research Organization, Volcani Center, PO Box 6, Bet-Dagan 50250, Israel
Van Staden, J., NU Research Unit for Plant Growth and Development, Department of Botany Pietermaritzburg, University of Natal, Private Bag X01, Scottsville 3209, South Africa
The effect of zeatin and iso-pentenyladenine on IAA transport from the shoot to the root of Pinus pinea seedlings
The tips of the tap roots of Pinus pinea seedlings were dipped in zeatin or iso-pentenyladenine solutions. Immediately after cytokinin application to the root tip or after a 24 h lag phase, [2-14C]IAA was applied to the shoot apex. Treating with zeatin resulted in an increase in [2-14C]IAA transport from the shoot to the root. Iso- pentenyladenine also caused a slight increase in transport of radioactivity to the root but this was less pronounced compared to the results obtained with zeatin. With zeatin treatment increasing amounts of radioactivity accumulated in the lateral root emerging zone of the tap root (Section III). This was in sharp contrast to the treatment with iso-pentenyladenine where little radioactivity accumulated in this section of the root. Recovery of radioactivity 48 h after applying [214C]IAA showed that 33% of the recovered radioactivity co-chromatographed with authentic IAA. The implications of the effect of different cytokinins on the distribution of radioactivity along the tap root of Pinus pinea following [2- 14C]IAA application to the shoot are discussed.
Scientific Publication
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