Sep 1, 2010 · The Cys 2 -His 2 zinc-finger transcription factor RAMOSA1 (RA1) regulates the fate of most axillary meristems during the early development of maize inflorescences, the tassel and the ear, and has been implicated in the evolution of grass architecture.

Sep 1, 2010 · The Cys(2)-His(2) zinc-finger transcription factor RAMOSA1 (RA1) regulates the fate of most axillary meristems during the early development of maize inflorescences, the tassel and the ear, and has been implicated in the evolution of grass architecture.

Jul 24, 2005 · Here we report the isolation of the maize ramosa1 gene and show that it controls inflorescence architecture. Through its expression in a boundary domain near the nascent meristem base,...

Double mutants between ra2 and a weak allele of ra1 have a greatly enhanced ear phenotype, suggesting that ra2 and ra1 act in the same pathway. Convincing evidence was provided by RNA gel blot analysis and RNA in situ hybridization experiments, which showed that ra1 expression is reduced in ra2 mutants ( Vollbrecht et al., 2005 ; Bortiri et al ...

To find out whether ra2 and ra1 expression overlap, we performed in situ hybridization of ra1 in wild-type tassels using the probe described by Vollbrecht et al. (2005). The onset of ra1 expression was observed at the base of spikelet pair meristems , clearly overlapping with ra2 …

Genes thought to have been selected upon during the domestication of crops are commonly known as domestication loci. The ramosa1 (ra1) gene encodes a putative transcription factor that controls branching architecture in the maize tassel and ear.

May 11, 2006 · Genetic and molecular data indicate that RA3 functions through the predicted transcriptional regulator RAMOSA1 (RA1) 5. We propose that RA3 regulates inflorescence branching by modification of a...

3.3.1 Differential nuclear localization of RA1 and RA1 mutant forms in planta 74 3.3.2 RA1 physically interacts with KN1 78 3.3.3 RA1 and KN1 interact through zinc finger region and homeodomain 82 3.3.4 The tassel branch phenotype of ra1-RSenh; kn1-e1 double mutants support the interaction between RA1 and KN1 86

Developmental dynamics of genes targeted in vivo by the transcription factor RAMOSA1, a key regulator of determinacy, revealed potential mechanisms for repressing branches in distinct stem cell populations, including interactions with KNOTTED1, a …

Feb 12, 2023 · Grass inflorescences support floral structures that each bear a single grain, where variation in branch architecture directly impacts yield. The maize (Zea mays) RAMOSA1 (ZmRA1) transcription factor acts as a key regulator of inflorescence development by imposing branch meristem determinacy.