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Document Version Version Comment Date Status
127297.0 [No comment] 30.06.2004 11:44 Released

ID: 127297.0, MPI für Pflanzenzüchtungsforschung / Dept. Plant Breeding and Yield Physiology (Francesco Salamini)
Establishment of cereal endosperm expression domains: Identification and properties of a maize transfer cell-specific transcription factor, ZmMRP-1
Authors:Gomez, E.; Royo, J.; Guo, Y.; Thompson, R.; Hueros, G.
Date of Publication (YYYY-MM-DD):2002-03
Title of Journal:Plant Cell
Journal Abbrev.:Plant Cell
Issue / Number:3
Start Page:599
End Page:610
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:In maize, cells at the base of the endosperm are transformed into transfer cells that facilitate nutrient uptake by the developing seed. ZmMRP-1 is the first transfer cell-specific transcriptional activator to be identified. The protein it encodes contains nuclear localization signals and a MYB-related DNA binding domain. A single gene copy is present in maize, mapping to a locus on chromosome 8. ZmMRP-1 is first expressed soon after fertilization, when the endosperm is still a multinuclear coenocyte. The transcript accumulates in the basal nucleocytoplasmic domain that gives rise to transfer cells after cellularlization. The transcript can be detected throughout transfer cell development, but it is not found in mature cells. ZmMRP-1 strongly transactivates the promoters of two unrelated transfer cell-specific genes. The properties of ZmMRP-1 are consistent with it being a determinant of transfer cell-specific expression. Possible roles for ZmMRP-1 in the regulation of endosperm and transfer cell differentiation are discussed.
Comment of the Author/Creator:Date: 2002, MAR
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Pflanzenzüchtungsforschung
External Affiliations:Univ Alcala de Henares, Dept Biol Celular & Genet, E-28871; Alcala De Henares, Madrid, Spain; Univ Alcala de Henares, Dept Biol Celular & Genet, E-28871 Alcala De Henares, Madrid, Spain; Max Planck Inst Zuchtungsforsch, D-50829 Cologne, Germany
Identifiers:ISI:000174788700008 [ID No:1]
ISSN:1040-4651 [ID No:2]