Thoughts on Cytoplasmic Male Sterility in cms-T Maize.
نویسنده
چکیده
منابع مشابه
Plastid Genotyping Reveals the Uniformity of Cytoplasmic Male Sterile-T Maize Cytoplasms.
Cytoplasmic male-sterile (CMS) lines in maize (Zea mays) have been classified by their response to specific restorer genes into three categories: cms-C, cms-S, and cms-T. A mitochondrial genome representing each of the CMS cytotypes has been sequenced, and male sterility in the cms-S and cms-T cytotypes is linked to chimeric mitochondrial genes. To identify markers for plastid genotyping, we se...
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In certain cases, the cultivation of genetically modified (GM) maize might require a high level of containment/ confinement to ensure coexistence with agricultural production methods that do not cultivate GM plants, such as organic farming. A single maize plant develops a huge amount of pollen (Uribelarrea et al., 2002; Westgate, Lizaso, & Batchelor, 2003), but only 5% of this amount pollinates...
متن کاملThe nuclear gene Rf3 affects the expression of the mitochondrial chimeric sequence R implicated in S-type male sterility in maize.
The mitochondrial genomes of maize plants exhibiting S-type cytoplasmic male sterility (cms-S) contain a repeated DNA region designated R. This region was found to be rearranged in the mitochondria of all cms-S cytoplasmically revertant fertile plants in all nuclear backgrounds analyzed. A 1.6-kb mRNA transcribed from the R region in mitochondria of sterile plants was absent from all cytoplasmi...
متن کاملComparisons among two fertile and three male-sterile mitochondrial genomes of maize.
We have sequenced five distinct mitochondrial genomes in maize: two fertile cytotypes (NA and the previously reported NB) and three cytoplasmic-male-sterile cytotypes (CMS-C, CMS-S, and CMS-T). Their genome sizes range from 535,825 bp in CMS-T to 739,719 bp in CMS-C. Large duplications (0.5-120 kb) account for most of the size increases. Plastid DNA accounts for 2.3-4.6% of each mitochondrial g...
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The URF13 protein, which is encoded by the mitochondrial gene T-urf13, is responsible for cytoplasmic male sterility and pathotoxin sensitivity in the Texas male-sterile cytoplasm (cms-T) of maize. Mitochondrial sensitivity to two host-specific fungal toxins (T toxins) is mediated by the interaction of URF13 and T toxins to form pores in the inner mitochondrial membrane. A carbamate insecticide...
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عنوان ژورنال:
- The Plant cell
دوره 5 10 شماره
صفحات -
تاریخ انتشار 1993