The true story of the HD-Zip family

FEDERICO ARIEL; PABLO MANAVELLA; CARLOS DEZAR; RAQUEL CHAN

TRENDS IN PLANT SCIENCE.

Elsevier

Año: 2007 vol. 12 p. 419 - 426

1360-1385

The HD-Zip family of transcription factors is unique to the plant kingdom. These proteins exhibit a singular combination of a homeodomain with a leucine zipper acting as a dimerization motif. They can be classified into four subfamilies, according to a set of distinctive features, including DNA binding specificities, genes structures, additional common motifs and physiological functions. Some HD-Zip proteins participate in organ and vascular development or meristem maintenance. Others mediate the action of hormones or are involved in responses to environmental conditions. Here we review recent data for this family of transcription factors from a wide variety of plant species to unravel their crucial role in plant development