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9 Sonuçlar
Mentor pollen effects on gametophytic incompatibility in Nicotiana, Oenothera and Lycopersicum.
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Attempts were made, through mentor pollen techniques, to overcome self-incompatibility in species belonging to the genera Nicotiana and Oenothera and in a hybrid of Lycopersicum, which are characterized by a gametophytic system of incompatibility. While radiation-killed incompatible pollen did not
Cytochrome b-559 genes from Oenothera hookeri and Nicotiana tabacum show a remarkably high degree of conservation as compared to spinach. The enigma of cytochrome b-559: highly conserved genes and proteins but no known function.
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Recent data suggest that cytochrome b-559, an intrinsic membrane protein of the oxygen-evolving photosystem II in chloroplasts, is a heme cross-linked heteromeric polypeptide unit (Herrmann et al. 1984, FEBS Lett 176:239-244). The genes for this cytochrome, designated psbE and psbF, have been
Evidence for replication slippage in the evolution of Oenothera chloroplast DNA.
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Evolutionary relationships of four plastid genomes (plastomes) from different Oenothera species have been assessed by sequence comparisons of two intergenic regions that separate the ribosomal protein genes rpl16, rpl14, and rps8. Sequence changes include base substitutions, the occurrence of a
The complete nucleotide sequences of the 5 genetically distinct plastid genomes of Oenothera, subsection Oenothera: II. A microevolutionary view using bioinformatics and formal genetic data.
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A unique combination of genetic features and a rich stock of information make the flowering plant genus Oenothera an appealing model to explore the molecular basis of speciation processes including nucleus-organelle coevolution. From representative species, we have recently reported complete
Chloroplast DNA differences in the genus Oenothera subsection Munzia: a short direct repeat resembling the lambda chromosomal attachment site occurs as a deletion/insertion within an intron of an NADH-dehydrogenase gene.
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A small restriction fragment length mutation has been mapped in the large inverted repeats of the chloroplast (cp) DNA of Munzia-Oenothera species (vom Stein and Hachtel 1986). This mutation could be localized within the intron of a reading frame presumably coding for subunit B of an
Variation in copy number of a 24-base pair tandem repeat in the chloroplast DNA of Oenothera hookeri strain Johansen.
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A highly variable region of chloroplast DNA has been analyzed from three isolates of Oenothera hookeri strain Johansen. The variability results from the presence of two, four or seven copies of a discrete 24-base pair tandem repeat in a segment of the chloroplast DNA within the inverted repeat.
In-frame length mutations associated with short tandem repeats are located in unassigned open reading frames of Oenothera chloroplast DNA.
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Chloroplast DNAs were compared between two closely related species in the subsection Munzia of the genus Oenothera. A restriction fragment length dimorphism (273 bp) within the large inverted repeats was localized to an unassigned open reading frame that is homologous to ORF 2280 of tobacco
A database of PCR primers for the chloroplast genomes of higher plants.
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BACKGROUND
Chloroplast genomes evolve slowly and many primers for PCR amplification and analysis of chloroplast sequences can be used across a wide array of genera. In some cases 'universal' primers have been designed for the purpose of working across species boundaries. However, the essential
Confocal laser scanning microscopy of mitochondria within microspore tetrads of plants using rhodamine 123 as a fluorescent vital stain.
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The present study demonstrates that rhodamine 123 penetrates the callose walls surrounding plant microspores before they are released from tetrads. The stain accumulates in active mitochondria due to the electrical potential across the mitochondrial membrane. Accumulation of dye does not occur in
Bilim tarafından desteklenen en eksiksiz şifalı otlar veritabanı
- 55 dilde çalışır
- Bilim destekli bitkisel kürler
- Görüntüye göre bitki tanıma
- Etkileşimli GPS haritası - bölgedeki bitkileri etiketleyin (yakında)
- Aramanızla ilgili bilimsel yayınları okuyun
- Şifalı bitkileri etkilerine göre arayın
- İlgi alanlarınızı düzenleyin ve haber araştırmaları, klinik denemeler ve patentlerle güncel kalın
Bir belirti veya hastalık yazın ve yardımcı olabilecek bitkiler hakkında bilgi edinin, bir bitki yazın ve karşı kullanıldığı hastalıkları ve semptomları görün.
* Tüm bilgiler yayınlanmış bilimsel araştırmalara dayanmaktadır
