The control of maize spikelet meristem fate by the APETALA2-like gene indeterminate spikelet1
Open Access
- 15 April 1998
- journal article
- Published by Cold Spring Harbor Laboratory in Genes & Development
- Vol. 12 (8), 1145-1154
- https://doi.org/10.1101/gad.12.8.1145
Abstract
The orderly production of meristems with specific fates is crucial for the proper elaboration of plant architecture. The maize inflorescence meristem branches several times to produce lateral meristems with determinate fates. The first meristem formed, the spikelet pair meristem, produces two spikelet meristems, each of which produces two floral meristems. We have identified a gene calledindeterminate spikelet1 (ids1) that specifies a determinate spikelet meristem fate and thereby limits the number of floral meristems produced. In the absence of ids1 gene function, the spikelet meristem becomes indeterminate and produces additional florets. Members of the grass family vary in the number of florets within their spikelets, suggesting that ids1 may play a role in inflorescence architecture in other grass species. ids1is a member of the APETALA2 (AP2) gene family of transcription factors that has been implicated in a wide range of plant development roles. Expression of ids1 was detected in many types of lateral organ primordia as well as spikelet meristems. Our analysis of the ids1 mutant phenotype and expression pattern indicates that ids1 specifies determinate fates by suppressing indeterminate growth within the spikelet meristem.This publication has 19 references indexed in Scilit:
- Loss-of-function mutations in the maize homeobox gene, knotted1, are defective in shoot meristem maintenanceDevelopment, 1997
- A gene triggering flower formation in ArabidopsisNature, 1995
- Ethylene-inducible DNA binding proteins that interact with an ethylene-responsive element.THE PLANT CELL ONLINE, 1995
- Cloning and characterization of the maize An1 gene.THE PLANT CELL ONLINE, 1995
- Sequence analysis and expression patterns divide the maize knotted1-like homeobox genes into two classes.THE PLANT CELL ONLINE, 1994
- Homeotic Transformation of Ovules into Carpel-like Structures in Arabidopsis.THE PLANT CELL ONLINE, 1994
- Sex determination in flowering plants.THE PLANT CELL ONLINE, 1993
- Sex determination gene TASSELSEED2 of maize encodes a short-chain alcohol dehydrogenase required for stage-specific floral organ abortionCell, 1993
- A dominant mutation in the maize homeobox gene, Knotted-1, causes its ectopic expression in leaf cells with altered fatesDevelopment, 1992
- AP2 Gene Determines the Identity of Perianth Organs in Flowers of Arabidopsis thaliana.THE PLANT CELL ONLINE, 1989