Isolation of 151 mutants that have developmental defects from T-DNA tagging. 2007

Ji Hoon Ahn, and Joonki Kim, and Seong Jeon Yoo, and So Yeon Yoo, and Hyungmin Roh, and Jun-Hyuk Choi, and Mi Suk Choi, and Kyung Sook Chung, and Eun Ju Han, and Sung Myun Hong, and Sung Hye Jung, and Hyo Jin Kang, and Bo Kyung Kim, and Mi Duk Kim, and Youn Kyung Kim, and Yun Hee Kim, and Hanna Lee, and Soo Hyun Park, and Jee Hoon Yang, and Jung Won Yang, and Dong-Hun Yoo, and Seung Kwan Yoo, and Jong Seob Lee
Plant Signaling Network Research Center, School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea.

In order to understand the mechanisms underlying plant development, a necessary first step involves the elucidation of the functions of the genes, via the analysis of mutants that exhibit developmental defects. In this study, an activation tagging mutant library harboring 80,650 independent Arabidopsis transformants was generated in order to screen for developmental mutants. A total of 129 mutants manifesting dominant developmental abnormalities were isolated, and their T-DNA insertion loci were mapped. The activation of one or more genes adjacent to a T-DNA insertion locus was confirmed in eight dominant mutants. A gene adjacent to the right border was usually activated by the 35S enhancers. Interestingly, the transcriptional activation of multiple genes within a broad range was observed in one of the mutants, which raises the possibility that activation by the 35S enhancers was not limited strictly to a single gene. In order to gain a better understanding of sexual reproduction in higher plants, we isolated 22 mutants exhibiting defects in female gametophyte development, and determined their T-DNA insertion loci. We propose that this mutant population may prove useful in the further determination of the functions of genes that play important roles in plant development.

UI MeSH Term Description Entries
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D010944 Plants Multicellular, eukaryotic life forms of kingdom Plantae. Plants acquired chloroplasts by direct endosymbiosis of CYANOBACTERIA. They are characterized by a mainly photosynthetic mode of nutrition; essentially unlimited growth at localized regions of cell divisions (MERISTEMS); cellulose within cells providing rigidity; the absence of organs of locomotion; absence of nervous and sensory systems; and an alternation of haploid and diploid generations. It is a non-taxonomical term most often referring to LAND PLANTS. In broad sense it includes RHODOPHYTA and GLAUCOPHYTA along with VIRIDIPLANTAE. Plant
D004269 DNA, Bacterial Deoxyribonucleic acid that makes up the genetic material of bacteria. Bacterial DNA
D005784 Gene Amplification A selective increase in the number of copies of a gene coding for a specific protein without a proportional increase in other genes. It occurs naturally via the excision of a copy of the repeating sequence from the chromosome and its extrachromosomal replication in a plasmid, or via the production of an RNA transcript of the entire repeating sequence of ribosomal RNA followed by the reverse transcription of the molecule to produce an additional copy of the original DNA sequence. Laboratory techniques have been introduced for inducing disproportional replication by unequal crossing over, uptake of DNA from lysed cells, or generation of extrachromosomal sequences from rolling circle replication. Amplification, Gene
D001483 Base Sequence The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence. DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA
D016133 Polymerase Chain Reaction In vitro method for producing large amounts of specific DNA or RNA fragments of defined length and sequence from small amounts of short oligonucleotide flanking sequences (primers). The essential steps include thermal denaturation of the double-stranded target molecules, annealing of the primers to their complementary sequences, and extension of the annealed primers by enzymatic synthesis with DNA polymerase. The reaction is efficient, specific, and extremely sensitive. Uses for the reaction include disease diagnosis, detection of difficult-to-isolate pathogens, mutation analysis, genetic testing, DNA sequencing, and analyzing evolutionary relationships. Anchored PCR,Inverse PCR,Nested PCR,PCR,Anchored Polymerase Chain Reaction,Inverse Polymerase Chain Reaction,Nested Polymerase Chain Reaction,PCR, Anchored,PCR, Inverse,PCR, Nested,Polymerase Chain Reactions,Reaction, Polymerase Chain,Reactions, Polymerase Chain
D018515 Plant Leaves Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed) Plant Leaf,Leaf, Plant,Leave, Plant,Leaves, Plant,Plant Leave
D018744 DNA, Plant Deoxyribonucleic acid that makes up the genetic material of plants. Plant DNA
D035264 Flowers The reproductive organs of plants. Blooms, Plant,Blossoms,Pistil,Plant Style,Anther, Plant,Carpal, Plant,Carpals, Plant,Filament, Flower,Flower Filament,Ovary, Plant,Petals, Plant,Plant Anther,Plant Calyx,Plant Carpals,Plant Corolla,Plant Ovary,Plant Petals,Plant Sepals,Plant Stamen,Plant Stigma,Sepals, Plant,Stamen, Plant,Stigma, Plant,Style, Plant,Anthers, Plant,Bloom, Plant,Blossom,Calyx, Plant,Calyxs, Plant,Corolla, Plant,Corollas, Plant,Filaments, Flower,Flower,Flower Filaments,Ovaries, Plant,Petal, Plant,Pistils,Plant Anthers,Plant Bloom,Plant Blooms,Plant Calyxs,Plant Carpal,Plant Corollas,Plant Ovaries,Plant Petal,Plant Sepal,Plant Stamens,Plant Stigmas,Plant Styles,Sepal, Plant,Stamens, Plant,Stigmas, Plant,Styles, Plant

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