Abstract
Postembryonic development of plants depends on the activity of apical meristems established during embryogenesis. The shoot apical meristem (SAM) and the root apical meristem (RAM) have similar but distinct cellular organization. Arabidopsis FASCIATA1 (FAS1) and FAS2 genes maintain the cellular and functional organization of both SAM and RAM, and FAS gene products are subunits of the Arabidopsis counterpart of chromatin assembly factor-1 (CAF-1). fas mutants are defective in maintenance of the expression states of WUSCHEL (WUS) in SAM and SCARECROW (SCR) in RAM. We suggest that CAF-1 plays a critical role in the organization of SAM and RAM during postembryonic development by facilitating stable maintenance of gene expression states.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Amino Acid Sequence
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Arabidopsis / genetics*
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Arabidopsis Proteins*
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Cell Division / physiology
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Chromatin Assembly Factor-1
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Chromosomal Proteins, Non-Histone*
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DNA Replication / physiology
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DNA-Binding Proteins / genetics*
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DNA-Binding Proteins / metabolism
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Fungal Proteins / genetics
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Gene Expression Regulation, Developmental
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Gene Expression Regulation, Plant
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Genes, Plant / physiology
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Homeodomain Proteins / genetics
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Meristem / cytology*
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Meristem / embryology
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Meristem / physiology
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Molecular Sequence Data
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Mutation / physiology
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Phenotype
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Plant Proteins / genetics*
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Plant Proteins / metabolism
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Plant Roots / cytology
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Plant Roots / embryology
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Plant Roots / physiology
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Saccharomyces cerevisiae Proteins*
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Seeds / cytology
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Seeds / physiology
Substances
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Arabidopsis Proteins
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Chromatin Assembly Factor-1
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Chromosomal Proteins, Non-Histone
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DNA-Binding Proteins
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FAS protein, Arabidopsis
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Fungal Proteins
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Homeodomain Proteins
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MSI1 protein, S cerevisiae
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Plant Proteins
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SCR protein, Arabidopsis
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Saccharomyces cerevisiae Proteins
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WUSCHEL protein, Arabidopsis
Associated data
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GENBANK/AB027229
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GENBANK/AB027230
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GENBANK/AJ012310