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Ethylene-mediated enhancement of apical hook formation in etiolated Arabidopsis thaliana seedlings is gibberellin dependent.

Abstract:

Dark-grown Arabidopsis seedlings develop an apical hook by differential elongation and division of hypocotyl cells. This allows the curved hypocotyl to gently drag the apex, which is protected by the cotyledons, upwards through the soil. Several plant hormones are known to be involved in hook development, including ethylene, which causes exaggeration of the hook. We show that gibberellins (GAs) are also involved in this process. Inhibition of GA biosynthesis with paclobutrazol (PAC) prevented...

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Publication status:
Published

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Authors


Vriezen, WH More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Plant Sciences
Van Der Straeten, D More by this author
Journal:
The Plant journal : for cell and molecular biology
Volume:
37
Issue:
4
Pages:
505-516
Publication date:
2004-02-05
DOI:
EISSN:
1365-313X
ISSN:
0960-7412
URN:
uuid:ac930e00-1c5b-41bf-8302-9c1c4c7a8132
Source identifiers:
32617
Local pid:
pubs:32617

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