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Showing 1 to 20 of 84 for “"Plastid"”.
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THE ORIGIN OF THE DINOFLAGELLATE PLASTID
… evolution of the chloroplast and indicate the plastid donor lineage. Gene sequences derived from the dinoflagellate chloroplast were extremely divergent but suggested that the plastid donor could have been a haptophyte. In an attempt to find better genes for analysis and to further understand …
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Functional analysis of plastid-encoded genes
Plastid chromosomes from the variety of plant species contain several conserved open reading frames of unknown function, which most probably represent functional genes. The primary aim of this thesis was the analysis of the role of two such ORFs, designated ycfs or hypothetical chloroplast reading …
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Improved plastid transformation in Marchantia polymorpha
Plastids are subcellular organelles which perform photosynthesis in plants and algae. They are descended from free-living photosynthetic bacteria which were engulfed by early eukaryotes ~1.5 billion years ago. Nearly all plastids retain a small genome separate from the nuclear genome of the plants …
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The complete plastid genome sequence of Passiflora cincinnata: genome rearrangements, massive plastid gene losses and implications to genome-plastome incompatibility
The plastid genome (plastome) organization, gene content and order is well conserved in most angiosperms, but there are some exceptions. The Passiflora genus is one of those exceptions, because there are evidences of some unusual plastid gene losses to species of this genus. However, none plastome …
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Can Plant Plastid Produce a Candidate Influenza Vaccine?
… the A/Sichuan/2/87 H3N2 influenza subtype in plastids achieved HA gene transcription but no protein accumulation, suggesting that the HA protein may be unstable in the plastid. The aim of this work is to investigate alternative strategies that might achieve HA antigen accumulation in plastids. …
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Plastid to Nucleus Signalling and the Evolution of C4 Photosynthesis
Plastid to nucleus signals have been shown to regulate core photosynthetic genes, in both C3 and C4 species. However, the regulatory mechanisms of this signalling are not well understood. C4 photosynthesis has evolved from the ancestral C3 state in over sixty lineages of plants. Although commonly …
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The plastid caseinolytic protease complex as a model for cytonuclear coevolution
… genome and two cytoplasmic genomes found in the plastid (chloroplast) and mitochondrion. Many protein complexes within these organelles consist of subunits deriving from both the nucleus and the organelle itself. Since the nuclear genome and organelle genomes differ in modes of transmission, …
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The Relation of Plastid Pigments to Color in Golden Delicious Apples
Made available in DSpace on 2014-12-04T19:49:17Z (GMT). No. of bitstreams: 1 0001399.pdf: 5670953 bytes, checksum: 55832418ee76e476befafb142fa95443 (MD5) Previous issue date: 1949
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Coevolution of plastid genomes and transcript processing pathways in photosynthetic alveolates
Following their endosymbiotic uptake, plastids undergo profound changes to genome content and to their associated biochemistry. I have investigated how evolutionary transitions in plastid genomes may impact on biochemical pathways associated with plastid gene expression, focusing on the highly …
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Plastid Genome Evolution in the Parasitic Genera Cuscuta (Convolvulaceae) and Krameria (Krameriaceae)
… production. This is particularly true for plastid genomes (plastomes) given that chloroplasts are the primary site of photosynthesis in the cell and that plastomes encode key portions of the photosynthetic apparatus.In only a handful of embryophyte lineages, however, a heterotrophic …
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Chloroplast Biotechnology in Higher Plants: Expressing Antimicrobial Genes in the Plastid Genome
While genetic improvement of susceptible crop species may enhance resistance to microbial pathogens and facilitate reduced pesticide load, the possibility for transmission of novel genes to wild relatives has hampered acceptance of GM crops in some markets. Chloroplast transformation presents an …
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Evolutionary relationships in Afro-Malagasy Schefflera (Araliaceae) based on nuclear and plastid markers
… sequence data from nuclear rDNA spacers and plastid markers derived from 32 of the 48 currently circumscribed species of Afro-Malagasy Schefflera, this study tested the monophyly of Afro-Malagasy Schefflera and of each of its two proposed subclades. Trees based on this molecular data were …
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Towards plastid transformation in rapeseed (Brassica napus L.) and sugarbeet (Beta vulgaris L.)
… establishment of conditions that make possible plastid transformation in both species. Tobacco leaf protoplasts (cv. ”petite Havana”, cv. ”Wisconsin 38”) were used to develop a novel technique – the TAL (thin-alginate-layers) technique. The TAL technique in combination with new culture media …
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Isolepis R.Br. (Cyperaceae) revisited : a phylogeny based on plastid and nuclear ribosomal DNA data
The approximately 75 species of Isolepis R Br. are currently described as annual or short lived perennials with predominantly terete spikelet's
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Kinetics of accumulation of photoregulated plastid proteins and theirmRNAs during greening in Euglena gracilis Z
… enzyme RuBPCase. Results showed both nuclear and plastid gene expression are differentially regulated during chloroplast development. The comparison of the fold-increase between mRNA and protein suggests a strong post-transcriptional control on LSU gene expression. Expression of CP I and 26 kd and …
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Gene expression in plastids of higher plants: evolutionary and functional aspects of different RNA polymerases - coordinated assembly of multiprotein-complexes
Plastid gene organisation maintains characteristics typical of its prokaryotic ancestry. The regulation of plastid gene expression however strongly deviates from that one its free-living cyanobacteria relatives. This intriguing complication of plastid gene expression characteristics is the result …
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Markerfreie transplastome Tabakpflanzen
… the first of these problems to some degree since plastid-encoded genes are maternally inherited in most important crop species. However, the complete removal of antibiotic resistance genes from transplastomic plants is preferable for improved safety standards. In this work a new system was …
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