Open AccessAGO1 controls arabidopsis inflorescence architecture possibly by regulating TFL1 expression
Author(s) -
Pedro Fernández-Nohales,
M. J. Domenech,
Ángel Emilio Martínez de Alba,
José Luis Micol,
Marı́a Rosa Ponce,
Francisco Madueño
Publication year - 2014
Publication title -
annals of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.567
H-Index - 176
eISSN - 1095-8290
pISSN - 0305-7364
DOI - 10.1093/aob/mcu132
Subject(s) - inflorescence , biology , leafy , meristem , arabidopsis , ectopic expression , mutant , genetics , gene , phenotype , positional cloning , botany
The TERMINAL FLOWER 1 (TFL1) gene is pivotal in the control of inflorescence architecture in arabidopsis. Thus, tfl1 mutants flower early and have a very short inflorescence phase, while TFL1-overexpressing plants have extended vegetative and inflorescence phases, producing many coflorescences. TFL1 is expressed in the shoot meristems, never in the flowers. In the inflorescence apex, TFL1 keeps the floral genes LEAFY (LFY) and APETALA1 (AP1) restricted to the flower, while LFY and AP1 restrict TFL1 to the inflorescence meristem. In spite of the central role of TFL1 in inflorescence architecture, regulation of its expression is poorly understood. This study aims to expand the understanding of inflorescence development by identifying and studying novel TFL1 regulators.
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