GrassTFDB :: Browse Family::Maize

Displaying C2C2-YABBY Family from Maize


Lateral organs produced by shoot apical and flower meristems exhibit a fundamental abaxial-adaxial asymmetry. We describe three members of the YABBY gene family FILAMENTOUS FLOWER YABBY2 and YABBY3 isolated on the basis of homology to CRABS CLAW. Each of these genes is expressed in a polar manner in all lateral organ primordia produced from the apical and flower meristems. The expression of these genes is precisely correlated with abaxial cell fate in mutants in which abaxial cell fates are found ectopically reduced or eliminated. Ectopic expression of either FILAMENTOUS FLOWER or YABBY3 is sufficient to specify the development of ectopic abaxial tissues in lateral organs. Conversely loss of polar expression of these two genes results in a loss of polar differentiation of tissues in lateral organs. Taken together these observations indicate that members of this gene family are responsible for the specification of abaxial cell fate in lateral organs of Arabidopsis. Furthermore ectopic expression studies suggest that ubiquitous abaxial cell fate and maintenance of a functional apical meristem are incompatible.

Protein Name
accepted / suggested
Gene Locus Synonym/
Gene Name
Clone in TFome Genome Browser
ZmYAB1 GRMZM2G054795 YAB1 pUT1396 , pUT1398 View in Browser
ZmYAB2 GRMZM2G088309 IFA1 pUT1437 View in Browser
ZmYAB3 GRMZM2G106204 YAB3 pUT6110 View in Browser
ZmYAB4 GRMZM2G046829 YAB4 pUT6751 View in Browser
ZmYAB5 GRMZM2G116646 YAB5 pUT3389 View in Browser
ZmYAB6 GRMZM2G074124 YAB6 pUT3381 View in Browser
ZmYAB7 GRMZM2G102218 DRL2 View in Browser
ZmYAB8 GRMZM2G529859 YAB15 pUT3390 View in Browser
ZmYAB9 GRMZM2G074543 YAB9 pUT6111 View in Browser
ZmYAB10 GRMZM2G167824 YAB10 View in Browser
ZmYAB11 GRMZM2G141955 YAB11 pUT3388 View in Browser
ZmYAB12 GRMZM2G085873 YAB12 View in Browser
ZmYAB14 GRMZM2G005353 YAB14 pUT6750 View in Browser