Patterns of soybean proline-rich protein gene expression

The expression patterns of three members of a gene family that encodes proline-rich proteins in soybean (SbPRPs) were examined using in situ hybridization experiments. In most instances, the expression of SbPRP genes was intense in a limited number of cell types of a particular organ. SbPRP1 RNA was...

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Bibliographic Details
Published in:The Plant cell 1992-01, Vol.4 (1), p.99-110
Main Authors: Wyatt, R.E. (University of Georgia, Athens, GA), Nagao, R.T, Key, J.L
Format: Article
Language:English
Subjects:
ARN MENSAJERO
ARN MESSAGER
Cell walls
COTILEDONES
COTYLEDON
Epidermal cells
EPIDERME
EPIDERMIS
EXPRESION GENICA
EXPRESSION DES GENES
FEUILLE
FLOEMA
GENE
GENES
GLYCINE MAX
Glycine max - genetics
GRAINE
HIPOCOTILOS
Histocytochemistry - methods
HOJAS
HYPOCOTYLE
Hypocotyls
In situ hybridization
Messenger RNA
Multigene Family
Nucleic Acid Hybridization
PARED CELULAR
PAROI CELLULAIRE
Peptide Biosynthesis
Peptides
Phloem
PHLOEME
Plant cells
Plant Proteins - biosynthesis
PROLINA
PROLINE
Proline-Rich Protein Domains
PROTEINAS VEGETALES
PROTEINE VEGETALE
RNA, Messenger - isolation & purification
Seedlings
SEMILLA
Soybeans
TESTA
Tissue Distribution
XILEMA
XYLEME
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Summary:The expression patterns of three members of a gene family that encodes proline-rich proteins in soybean (SbPRPs) were examined using in situ hybridization experiments. In most instances, the expression of SbPRP genes was intense in a limited number of cell types of a particular organ. SbPRP1 RNA was localized in several cell types of soybean hypocotyls, including cells within the phloem and xylem. SbPRP1 expression increased within epidermal cells in the elongating and mature regions of the hypocotyl; expression was detected also in lignified cells surrounding the hilum of mature seeds. SbPRP2 RNA was present in cortical cells and in the vascular tissue of the hypocotyl, especially cells of the phloem. This gene was expressed also in the inner integuments of the mature seed coat. SbPRP3 RNA was localized specifically to the endodermoid layer of cells surrounding the stele in the elongating region of the hypocotyl, as well as in the epidermal cells of leaves and cotyledons. These data show that members of this gene family exhibit cell-specific expression. The members of the SbPRP gene family are expressed in different types of cells and in some cell types that also express the glycine-rich protein or hydroxyproline-rich glycoprotein classes of genes
ISSN:1040-4651
1532-298X
DOI:10.1105/tpc.4.1.99