A trehalose metabolic enzyme controls inflorescence architecture in maize

Satoh-Nagasawa, N., Nagasawa, N., Malcomber, S., Sakai, H., Jackson, D. (May 2006) A trehalose metabolic enzyme controls inflorescence architecture in maize. Nature, 441 (7090). pp. 227-30. ISSN 1476-4687 (Electronic)

URL: https://www.ncbi.nlm.nih.gov/pubmed/16688177
DOI: 10.1038/nature04725

Abstract

Inflorescence branching is a major yield trait in crop plants controlled by the developmental fate of axillary shoot meristems. Variations in branching patterns lead to diversity in flower-bearing architectures (inflorescences) and affect crop yield by influencing seed number or harvesting ability. Several growth regulators such as auxins, cytokinins and carotenoid derivatives regulate branching architectures. Inflorescence branching in maize is regulated by three RAMOSA genes. Here we show that one of these genes, RAMOSA3 (RA3), encodes a trehalose-6-phosphate phosphatase expressed in discrete domains subtending axillary inflorescence meristems. Genetic and molecular data indicate that RA3 functions through the predicted transcriptional regulator RAMOSA1 (RA1). We propose that RA3 regulates inflorescence branching by modification of a sugar signal that moves into axillary meristems. Alternatively, the fact that RA3 acts upstream of RA1 supports a hypothesis that RA3 itself may have a transcriptional regulatory function.

Item Type: Paper
Uncontrolled Keywords: Gene Expression Regulation Enzymologic Gene Expression Regulation Plant Genes Plant genetics Meristem metabolism Mutation genetics Phenotype Phosphoric Monoester Hydrolases genetics metabolism Transcription Genetic genetics Trehalose metabolism Zea mays anatomy & histology enzymology genetics/metabolism
Subjects: organism description > plant > maize
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > genes, structure and function > genes: types > RA3
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > genes, structure and function > genes: types > RAMOSA3
CSHL Authors:
Communities: CSHL labs > Jackson lab
Depositing User: CSHL Librarian
Date: 11 May 2006
Date Deposited: 09 Dec 2011 15:00
Last Modified: 11 Jan 2017 21:08
Related URLs:
URI: http://repository.cshl.edu/id/eprint/22892

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