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Hybrid genes in the analysis of transformation conditions
Direct gene transfer into plant protoplasts has been recently developed, and conditions for high frequency transformation of SR1 tobacco protoplasts established. In this paper we analyse numerousExpand
A Gradual Process of Recombination Restriction in the Evolutionary History of the Sex Chromosomes in Dioecious Plants
To help understand the evolution of suppressed recombination between sex chromosomes, and its consequences for evolution of the sequences of Y-linked genes, we have studied four X-Y gene pairs,Expand
SlY1, the first active gene cloned from a plant Y chromosome, encodes a WD‐repeat protein
Unlike the majority of flowering plants, which possess hermaphrodite flowers, white campion (Silene latifolia) is dioecious and has flowers of two different sexes. The sex is determined by theExpand
Analysis and evolution of two functional Y-linked loci in a plant sex chromosome system.
White campion (Silene latifolia) is one of the few examples of plants with separate sexes and with X and Y sex chromosomes. The presence or absence of the Y chromosome determines which type ofExpand
High-resolution boundary analysis during Arabidopsis thaliana flower development.
We report a comparative analysis of cell proliferation patterns during Arabidopsis flower development. Cell division was evaluated by a direct method, i.e. the 5-bromo-2'-deoxyuridine (BrdU)Expand
Karyotyping Melandrium album, a dioecious plant with heteromorphic sex chromosomes
Mitotic metaphase chromosomes of Melandrium album obtained from root protoplasts were studied. Morphologically, the chromosomes were either metacentrics or submetacentrics. They were classified intoExpand
Low variability in a Y-linked plant gene and its implications for Y-chromosome evolution
Sex chromosomes have evolved independently in several different groups of organisms, but they share common features, including genetic degeneration of the Y chromosome. Suppression of recombinationExpand
Sexual dimorphism in white campion: complex control of carpel number is revealed by y chromosome deletions.
Sexual dimorphism in the dioecious plant white campion (Silene latifolia = Melandrium album) is under the control of two main regions on the Y chromosome. One such region, encoding theExpand
Sexual dimorphism in white campion: deletion on the Y chromosome results in a floral asexual phenotype.
White campion is a dioecious plant with heteromorphic X and Y sex chromosomes. In male plants, a filamentous structure replaces the pistil, while in female plants the stamens degenerate early inExpand
Intergeneric asymmetric hybrids between Nicotiana plumbaginifolia and Atropa belladonna obtained by “gamma-fusion”
SummaryAsymmetric nuclear hybrids have been obtained by fusion of cells from a nitrate-reductase deficient mutant of Nicotiana plumbaginifolia (cnx20) and gamma irradiated protoplasts of AtropaExpand