Gene Expression During Seed Formation and Maturation in Crucifereae
Mature seeds contain a significant stock of stored mRNA, the life-span of which is as long as the seed-life (Payne, 1976; Delseny et al., 1977). A basic question in seed biology is the role and function of this stored mRNA. During the last ten years, many plant molecular biologists have addressed this question. As a result, seed development has been extensively studied. Most results concern the easiest genes to deal with, those coding for the storage proteins. However this gives only a partial view of seed development (Dure, 1985; Casey et al., 1986). Trying to answer questions concerning mRNA stored in mature seeds we have been led to analyse gene expression at various developmental stages and to realise that during seed development a number of genes are differentially expressed and sequentially switched on and off.
KeywordsStorage Protein Seed Development Mature Seed Late Embryogenesis Abundant Immature Seed
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- Casey R, Domoney C, Ellis N (1986) Legume storage proteins and their genes. Oxford Surveys of Plant Molecular and Cell Biology 3: 1–95.Google Scholar
- Crouch ML, Tenbarge KM, Simon AE, Ferl R (1983) cDNA clones for Brassica napus seed storage proteins: evidence from nucleotide sequence analysis that both subunits of napin are cleaved from a precursor polypeptide. J Mol Appl. Genet 2: 273–283.Google Scholar
- Depigny D,Raynal M, Grellet F, Delseny F (1991) Structure, expression and evolution of storage protein genes in radish and related crucifers. Proc. of Vllith International Rapeseed Meeting Saskatoon (in press).Google Scholar
- Dure L III (1985) Embryogenesis and gene expression during seed formation. Oxford Surveys of Plant Molecular and Cell Biology 2: 179–197.Google Scholar
- Raynal M, Aspart L, This P, Delseny M (1987) Biosynthesis of cruciferin polypeptides in immature radish seeds. Plant Physiol Biochem 25: 439–444.Google Scholar