Angenent GC et al. 1994
- Authors:
Angenent GC. Franken J. Busscher M. Weiss D. van Tunen AJ.
- Title:
Co-suppression of the petunia homeotic gene fbp2 affects the identity of
the generative meristem.
- Reference location:
Plant Journal. 5(1):33-44, 1994 Jan.
- Abstract:
The function of the petunia MADS box gene fbp2 in the control of floral
development has been investigated. Inhibition of fbp2 expression in
transgenic plants by a co-suppression approach resulted in the development
of highly aberrant flowers with modified whorl two, three and four organs.
This mutant flower phenotype inherited as a single Mendelian trait. The
flowers possess a green corolla which is reduced in size. Furthermore, the
stamens are replaced by green petaloid structures and the inner gynoecial
whorl is dramatically reduced. No ovules or placenta are formed and
instead two new inflorescences developed in the axils of the carpels.
These homeotic transformations are accompanied by a complete
down-regulation of the petunia MADS box gene fbp6 which is highly
homologous to the Arabidopsis and Antirrhinum genes agamous (ag) and plena
(ple). In contrast to this, two other petunia MADS box genes, exclusively
expressed in whorls two and three, are still transcribed. Our results
indicate that the fbp2 gene belongs to a new class of morphogenesis genes
involved in the determination of the central part of the generative
meristem.
This page is part of the
Snapdragon Home Page.
The URL of the Snapdragon Home Page is
http://www.mpiz-koeln.mpg.de/snapdragon/snapdragon.html
If you have any comments, additions or corrections to this page of general
interest you are invited to use the
Snapdragon Guest Book.
For personal comments please write to the author(s) of this page or to
Kurt Stueber.
This page has last been modified on May 26, 1997.