ArticleGenes & development1998
The ROTUNDIFOLIA3 gene of Arabidopsis thaliana encodes a new member of the cytochrome P-450 family that is required for the regulated polar elongation of leaf cells.
Article in Genes & development, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 99 papers.
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99 citing papers in PubMed, 253 citations in OpenAlex.
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- Molecular Mechanisms of Brassinosteroid-Mediated Responses to Changing Environments inInternational journal of molecular sciences · 2020Review
- PcDWF1, a pear brassinosteroid biosynthetic gene homologous to AtDWARF1, affected the vegetative and reproductive growth of plants.BMC plant biology · 2020Article
- Cellular perspectives for improving mesophyll conductance.The Plant journal : for cell and molecular biology · 2020Review
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39 more citing papers are in PubMed but not listed here.
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Authors and funding
3 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The polarized processes of cell elongation play a crucial role in morphogenesis of higher plants. We reported previously that the rotundifolia3 (rot3) mutant of Arabidopsis has a defect in the polar elongation of leaf cells. In the present study, we isolated two additional alleles with mutations in the ROT3 gene. The ROT3 gene was cloned by a T-DNA-tagging method and isolation of the gene was confirmed by a molecular analysis of three rot3 mutant alleles obtained from different mutagenesis. The ROT3 gene encodes a cytochrome P-450 (CYP90C1) with domains homologous to regions of steroid hydroxylases of animals and plants. Expression of the ROT3 gene was detected in all major plant organs. Especially, higher expression was detected in the tissues that had high activity of cell division. We confirmed that the ROT3 gene controls polar elongation specifically in leaf cells by an analysis of three rot3 mutants obtained from different mutagenesis experiments. Our results imply that the ROT3 protein is a member of a new class of cytochrome P-450 encoding putative steroid hydroxylases, which is required for the regulated polar elongation of cells in leaves of Arabidopsis.
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