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  • 1
    Publication Date: 2007-06-09
    Description: Root hairs and rhizoids are cells with rooting functions in land plants. We describe two basic helix-loop-helix transcription factors that control root hair development in the sporophyte (2n) of the angiosperm Arabidopsis thaliana and rhizoid development in the gametophytes (n) of the bryophyte Physcomitrella patens. The phylogeny of land plants supports the hypothesis that early land plants were bryophyte-like and possessed a dominant gametophyte and later the sporophyte rose to dominance. If this hypothesis is correct, our data suggest that the increase in morphological complexity of the sporophyte body in the Paleozoic resulted at least in part from the recruitment of regulatory genes from gametophyte to sporophyte.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Menand, Benoit -- Yi, Keke -- Jouannic, Stefan -- Hoffmann, Laurent -- Ryan, Eoin -- Linstead, Paul -- Schaefer, Didier G -- Dolan, Liam -- BBS/E/J/0000A218/Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2007 Jun 8;316(5830):1477-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Developmental Biology, John Innes Centre, Norwich NR47UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17556585" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arabidopsis/cytology/genetics/growth & development/*physiology ; Arabidopsis Proteins/genetics/*physiology ; Basic Helix-Loop-Helix Transcription Factors/genetics/*physiology ; Biological Evolution ; Bryopsida/cytology/genetics/growth & development/*physiology ; Diploidy ; Genes, Plant ; Haploidy ; Molecular Sequence Data ; Mutation ; Phylogeny ; Plant Epidermis/cytology/physiology ; Plant Proteins/genetics/physiology ; Plant Roots/*cytology/growth & development ; Plants, Genetically Modified
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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