The tomato Blind gene encodes a MYB transcription factor that controls the formation of lateral meristems
| Autor: | Carola Fiore, Klaus Theres, Filomena Carriero, Edith Tillmann, Gregor Schmitz, Francesco Cellini |
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| Rok vydání: | 2002 |
| Předmět: |
DNA
Plant Positional cloning Meristem Molecular Sequence Data Mutant Biology Genes Plant Proto-Oncogene Proteins c-myb Solanum lycopersicum Gene Expression Regulation Plant MYB Amino Acid Sequence Chromosomes Artificial Yeast Gene Plant Proteins Regulation of gene expression Genetics Multidisciplinary Base Sequence Sequence Homology Amino Acid fungi Chromosome Mapping Gene Expression Regulation Developmental food and beverages Biological Sciences Cosmids DNA-Binding Proteins Phenotype Meristem initiation Mutation Polymorphism Restriction Fragment Length Transcription Factors |
| Zdroj: | Proceedings of the National Academy of Sciences. 99:1064-1069 |
| ISSN: | 1091-6490 0027-8424 |
| DOI: | 10.1073/pnas.022516199 |
| Popis: | The multitude of forms observed in flowering plants is largely because of their ability to establish new axes of growth during postembryonic development. This process is initiated by the formation of secondary meristems that develop into vegetative or reproductive branches. In the blind and torosa mutants of tomato, initiation of lateral meristems is blocked during shoot and inflorescence development, leading to a strong reduction in the number of lateral axes. In this study, it is shown that blind and torosa are allelic. The Blind gene has been isolated by positional cloning, and it was found that the mutant phenotype is caused by a loss of function of an R2R3 class Myb gene. RNA interference-induced blind phenocopies confirmed the identity of the isolated gene. Double mutant analysis shows that Blind acts in a novel pathway different from the one to which the previously identified Lateral suppressor gene belongs. The findings reported add a new class of transcription factors to the group of genes controlling lateral meristem initiation and reveal a previously uncharacterized function of R2R3 Myb genes. |
| Databáze: | OpenAIRE |
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