INVESTIGADORES
PALATNIK Javier Fernando
capítulos de libros
Título:
Role of miR319 in plant development
Autor/es:
SCHOMMER C; BRESSO, EG; SPINELLI, SV; PALATNIK, J.F.
Libro:
MicroRNAs in Plant Development and Stress Responses
Editorial:
Springer
Referencias:
Año: 2012; p. 29 - 48
Resumen:
Originally
identified in a genetic screen, microRNA miR319 regulates transcription factors
of the TCP family. The balance
between miR319 and its targets controls leaf morphogenesis and several other
plant developmental processes. High levels of miR319 or low TCP activity cause
an excess of cell proliferation that generates a crinkled simple leaf in Arabidopsis and snapdragon, or
supercompound organ in tomato. In contrast, reduced miR319 levels or high TCP
activity reduces leaf and petal size, results in a simple tomato leaf and is
lethal in extreme cases. Insights into the gene networks that are controlled by
the miR319-regulated TCPs demonstrate their participation in multiple
biological pathways, from hormone biosynthesis and signaling to cell
proliferation and differentiation.