Class I and class II TCP transcription factors modulate SOC1-dependent flowering at multiple levels

LUCERO LE; MANAVELLA PA; GRAS DE; ARIEL FD; GONZÁLEZ DH

MOLECULAR PLANT

OXFORD UNIV PRESS

Año: 2017

1674-2052

Our results notonly introduced TCP15 as a new component of the flowering regulatory networkbut also established a new mode of hierarchical interaction of TCPs from differentclasses in a single signaling pathway. Even acting at different levels, theclass I protein TCP15 and the class II protein TCP4 positively regulate flowering.Our findings challenge the current concept of antagonistic functions exerted byclass I and class II TCPs. This idea arose mainly from studies of leafdevelopment, where class I and class II TCPs stimulate and repressproliferation, respectively. Considering the diversity of TCP proteins and themany processes in which they participate, itbecomes evident that different functional interactions between proteins fromboth classes were established, reaching a wide range of developmental outputs.