Reference : Towards understanding the function of JOINTLESS gene in tomato inflorescence
Scientific congresses and symposiums : Poster
Life sciences : Biochemistry, biophysics & molecular biology
http://hdl.handle.net/2268/214253
Towards understanding the function of JOINTLESS gene in tomato inflorescence
English
Huerga Fernandez, Samuel mailto [Université de Liège > Département des sciences de la vie > Physiologie végétale >]
Gómez Roldán, Maria Victoria [Paris Saclay > Institute of Plant Sciences > > > >]
Orman-Ligeza, Beata mailto [Université de Liège > Département des sciences de la vie > Physiologie végétale >]
Bendahmane, Abdelhafid [Paris Saclay > Institute of Plant Sciences > > > >]
Périlleux, Claire mailto [Université de Liège > Département des sciences de la vie > Physiologie végétale >]
Sep-2017
No
International
Workshop on Molecular Mechanisms Controlling Flower Development
from 03/09/2017 to 07/09/2017
Padova
Italy
[en] Tomato ; Inflorescences ; jointless ; transgenics ; abscission
[en] The lack of fruit abscission is a trait of great agronomical value. In tomato, the jointless phenotype,
referring to the lack of abscission zone (AZ) in the flower pedicel, has been obtained by two
independent mutations, named jointless (j) and jointless-2 (j-2). The corresponding genes encode
MADS-box transcription factors, as shown in 2000 for J (Mao et al. 2000) and very recently for J-2,
known as SlMBP21 (Gomez-Roldan et al., 2017). Similar to the quartet model of MADS-box protein
complexes regulating floral organ formation, J and J-2 interact with MADS-box partners, among
which MACROCRALYX (MC), to regulate AZ formation (Liu et al. 2014). In addition to - or in
connection with - AZ formation, J acts during the building of the inflorescence to regulate meristem
fate. Indeed j mutants produce leafy inflorescences characterized by faster flower maturation and
resumption of vegetative meristems (Périlleux et al. 2014). For these traits, j is epistatic to j-2. The
involvement of J in the regulation of meristem fate is consistent with the roles of its closest homologs
in Arabidopsis, AGAMOUS LIKE 24 (AGL24) and SHORT VEGETATIVE PHASE (SVP). Our goal is
to identify J targets in order to unravel its multiple functions in the tomato inflorescence.
Researchers ; Students
http://hdl.handle.net/2268/214253

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