Studies on auxin transport in Coleus and Helianthus

The products formed during transport in excised plant segments of radioactively labelled indolyl-3-acetic acid and 2,4-dichlorophenoxyacetic acid have been investigated. The techniques employed were extraction of the tissue followed by radiochromatography. It was found that indolyl-3- acetic acid is...

Full description

Bibliographic Details
Main Author: Garland, D.
Published: University of Leicester 1974
Subjects:
572
Online Access:http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.456247
id ndltd-bl.uk-oai-ethos.bl.uk-456247
record_format oai_dc
spelling ndltd-bl.uk-oai-ethos.bl.uk-4562472016-06-21T03:32:08ZStudies on auxin transport in Coleus and HelianthusGarland, D.1974The products formed during transport in excised plant segments of radioactively labelled indolyl-3-acetic acid and 2,4-dichlorophenoxyacetic acid have been investigated. The techniques employed were extraction of the tissue followed by radiochromatography. It was found that indolyl-3- acetic acid is readily converted to indolyl-3-acetyl aspartate in Coleus tissue but not in Helianthus tissue. 2,4-dichlorophenoxyacetic acid appears to undergo little change. The distribution of radioactive material which results from the transport of labelled auxin in plant segments and small plants was also investigated by means of oxidation and subsequent scintillation counting. It was found that the system has a definite capacity and that much of the transported auxin is immobilised but not necessarily conjugated and that amounts of auxin reaching receiving systems is not a reliable basis for estimating auxin which is transported within tissue. Auxin transport into root primordia, lateral buds, abscission zones and through developmental transition zones is also briefly considered and it is reported that no barrier to the transport is encountered in these regions.572University of Leicesterhttp://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.456247http://hdl.handle.net/2381/35227Electronic Thesis or Dissertation
collection NDLTD
sources NDLTD
topic 572
spellingShingle 572
Garland, D.
Studies on auxin transport in Coleus and Helianthus
description The products formed during transport in excised plant segments of radioactively labelled indolyl-3-acetic acid and 2,4-dichlorophenoxyacetic acid have been investigated. The techniques employed were extraction of the tissue followed by radiochromatography. It was found that indolyl-3- acetic acid is readily converted to indolyl-3-acetyl aspartate in Coleus tissue but not in Helianthus tissue. 2,4-dichlorophenoxyacetic acid appears to undergo little change. The distribution of radioactive material which results from the transport of labelled auxin in plant segments and small plants was also investigated by means of oxidation and subsequent scintillation counting. It was found that the system has a definite capacity and that much of the transported auxin is immobilised but not necessarily conjugated and that amounts of auxin reaching receiving systems is not a reliable basis for estimating auxin which is transported within tissue. Auxin transport into root primordia, lateral buds, abscission zones and through developmental transition zones is also briefly considered and it is reported that no barrier to the transport is encountered in these regions.
author Garland, D.
author_facet Garland, D.
author_sort Garland, D.
title Studies on auxin transport in Coleus and Helianthus
title_short Studies on auxin transport in Coleus and Helianthus
title_full Studies on auxin transport in Coleus and Helianthus
title_fullStr Studies on auxin transport in Coleus and Helianthus
title_full_unstemmed Studies on auxin transport in Coleus and Helianthus
title_sort studies on auxin transport in coleus and helianthus
publisher University of Leicester
publishDate 1974
url http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.456247
work_keys_str_mv AT garlandd studiesonauxintransportincoleusandhelianthus
_version_ 1718313165369901056