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Journal of Experimental Botany, Vol. 53, No. 375, pp. 1829-1830, August 1, 2002
© 2002 Oxford University Press

Isolation and characterization of the Spindly homologue from tomato

Received 19 December 2001; Accepted 26 April 2002

Thomas Greb, Gregor Schmitz and Klaus Theres1

Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829 Cologne, Germany

1 To whom correspondence should be addressed. Fax: +49 221 5062 413. E-mail: theres{at}mpiz-koeln.mpg.de

The SPINDLY (SPY) gene is a crucial component of the gibberellin signal transduction pathway in Arabidopsis thaliana (L.) Heynh. In this study, the cloning of the SPINDLY-orthologous gene (LeSpy) from tomato (Lycopersicon esculentum Mill.) and its characterization are reported. SPY and LeSpy show high sequence similarity along their entire lengths, which is reflected in the conservation of exon–intron structure and of all sequence motives previously identified. To analyse the relationship between the Arabidopsis spindly and the tomato procera mutant, which show similar phenotypes, the LeSpy gene was characterized in wild-type and procera tomato plants. These analyses as well as mapping of LeSpy revealed that LeSpy and Procera are different genes.

Key words: Key words: GA signalling, gibberellins, Procera, Spindly.


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