How do ‘housekeeping’ genes control organogenesis?—unexpected new findings on the role of housekeeping genes in cell and organ differentiation
Tsukaya, Hirokazu | Byrne, Mary E. | Horiguchi, Gorou | Sugiyama, Munetaka | Van Lijsebettens, Mieke | Lenhard, Michael
In recent years, an increasing number of mutations in what would appear to be ‘housekeeping genes’ have been identified as having unexpectedly specific defects in multicellular organogenesis. This is also the case for organogenesis in seed plants. Although it is not surprising that loss-of-function mutations in ‘housekeeping’ genes result in lethality or growth retardation, it is surprising when (1) the mutant phenotype results from the loss of function of a ‘housekeeping’ gene and (2) the mutant phenotype is specific. In this review, by defining housekeeping genes as those encoding proteins that work in basic metabolic and cellular functions, we discuss unexpected links between housekeeping genes and specific developmental processes. In a surprising number of cases housekeeping genes coding for enzymes or proteins with functions in basic cellular processes such as transcription, post-transcriptional modification, and translation affect plant development.
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