CaMADS1, an AGAMOUS homologue from hazelnut, produces floral homeotic conversion when expressed in Arabidopsis View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2001-02

AUTHORS

D. Rigola, M. E. Pè, L. Mizzi, F. Ciampolini, M. Sari-Gorla

ABSTRACT

CaMADS1 is a floral-specific MADS box gene of hazelnut (Corylus avellana) which, according to its sequence and expression pattern, belongs to the AGAMOUS gene sub-family. To investigate whether CaMADS1 plays a role in specifying stamen and carpel identity, this gene was ectopically expressed in Arabidopsis. The constitutive expression of CaMADS1 in transgenic plants produced the homeotic conversion of first and second whorl organs: the first whorl exhibited carpelloid sepals and the second whorl showed staminoid features. This was expected on the basis of the ABC model, according to which ectopic expression of a functional AGAMOUS (a gene of class C) orthologue would suppress the A class homeotic function in the first and second whorls, leading to transformation of these whorls into carpels and stamen, respectively. These results indicate a functional equivalency between AGAMOUS and CaMADS1, for which CaMADS1 might behave like a class C homeotic gene, controlling the determination of stamen and carpel identity in hazelnut More... »

PAGES

185-191

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s004970000057

DOI

http://dx.doi.org/10.1007/s004970000057

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1035955903


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