Structural mutation observed in mitochondrial genomes of male sterility plants.
نویسندگان
چکیده
منابع مشابه
Unique Changes in Mitochondrial Genomes Associated with Reversions of S-Type Cytoplasmic Male Sterility in Maizemar
Cytoplasmic male sterility (CMS) in plants is usually associated with the expression of specific chimeric regions within rearranged mitochondrial genomes. Maize CMS-S plants express high amounts of a 1.6-kb mitochondrial RNA during microspore maturation, which is associated with the observed pollen abortion. This transcript carries two chimeric open reading frames, orf355 and orf77, both unique...
متن کاملTransgenic induction of mitochondrial rearrangements for cytoplasmic male sterility in crop plants.
Stability of the mitochondrial genome is controlled by nuclear loci. In plants, nuclear genes suppress mitochondrial DNA rearrangements during development. One nuclear gene involved in this process is Msh1. Msh1 appears to be involved in the suppression of illegitimate recombination in plant mitochondria. To test the hypothesis that Msh1 disruption leads to the type of mitochondrial DNA rearran...
متن کاملMale-sterility induction in transgenic tobacco plants with an unedited atp9 mitochondrial gene from wheat.
Cytoplasmic male sterility in plants is associated with mitochondrial dysfunction. We have proposed that a nuclear-encoded chimeric peptide formed by mitochondrial sequences when imported into the mitochondria may impair organelle function and induce male sterility in plants. A model developed to test this hypothesis is reported here. Assuming that the editing process in higher plant mitochondr...
متن کاملCytoplasmic Genetic Male Sterility in Plants – a Molecular Perspective
Male sterility is defined as the failure of plants to produce functional anthers, pollen, or male gametes. First documentation of male sterility came in 1763 when Kölreuter observed anther abortion within species and specific hybrids. It is more prevalent than female sterility, probably because, male sporophyte and gametophyte less protected from environment than ovule and embryo sac. Male ster...
متن کاملMitochondrial complementation and cytoplasmic male sterility in wheat.
RTIFICIAL mixtures of mitochondria from various unrelated inbred lines A of maize exhibit oxidative and phosphorylative activities which correspond to the activities of mitochondria of hybrids of these lines ( SARKISSIAN and SRI~ASTAVA 1967; MCDANIEL and SARKISSIAN 1968). This phenomenon has been called mitochondrial complementation (MCDANIEL and SARKISSIAN 1966). Complementation reflects dissi...
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ژورنال
عنوان ژورنال: Kagaku To Seibutsu
سال: 1985
ISSN: 0453-073X,1883-6852
DOI: 10.1271/kagakutoseibutsu1962.23.514