The unique relationship between tsh4 and ra2 in patterning floral phytomers
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Updated: Jun 11, 2026

Bioluminescence Resonance Energy Transfer (BRET)-Based Assay for Measuring Interactions of CRAF with 14-3-3 Proteins in Live Cells
Published on: March 1, 2024
George Chuck1, Esteban Bortiri
1Plant Gene Expression Center, United States Department of Agriculture/Agricultural Research Service, Department of Plant and Microbial Biology, University of California at Berkeley, Albany, California, USA. georgechuck@berkeley.edu
Abstract:
Phytomers are developmental compartments that display stereotypical patterns dependent on whether they are initiated during the vegetative phase or the floral phases. Differences in appearance result from differential partitioning mechanisms responsible for allocation of cells to different components of the phytomer. The tasselsheath loci of maize control cell partitioning within the phytomer, indirectly influencing growth and development of its individual components. The tasselsheath4 (tsh4) gene accomplishes this through regulation of the ramosa2 (ra2) meristem determinacy gene, whereas tasselsheath1 (tsh1) appears to function differently.
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