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Pàgina 1 des de 19 resultats
In vitro shoot regeneration of Populus deltoides: effect of cytokinin and genotype.
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Treatment differences were observed in the in vitro adventitious shoot regeneration response from internodal explants of three genotypes of Populus deltoides cultured on media supplemented with five concentrations each of the cytokinins 6-benzyladenine, 2-isopentyladenine, and zeatin. For each of
[The production of the tumor necrosis factor in an experimental staphylococcal infection].
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The paper deals with the study of production of tumour necrosis factor (TNF), the key mediator of inflammation and immune responses of the organism, under experimental and staphylococcus infection (Staphylococcus aureus, st. 209) on mice of C57B16 line. It is established that staphylococcus
Transgenic production of cytokinin suppresses bacterially induced hypersensitive response symptoms and increases antioxidative enzyme levels in Nicotiana spp.
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Responses of cytokinin overproducing transgenic Nicotiana plants to infections with compatible and incompatible Pseudomonas syringae pathovars were compared. Plants used were transformed with the ipt(isopentenyl transferase) gene that catalyzes the synthesis of cytokinin. In cytokinin overproducing
Effect of adenine sulphate interaction on growth and development of shoot regeneration and inhibition of shoot tip necrosis under in vitro condition in adult Syzygium cumini L.--a multipurpose tree.
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An efficient method for cloning Syzygium cumini (above 40 years old) through mature nodal segments has been successfully developed and that could be exploited for large-scale production of this valuable multipurpose tree. Nodal segments from mature tree were taken as explants and cultured on MS
Ubiquitin ligase EL5 maintains the viability of root meristems by influencing cytokinin-mediated nitrogen effects in rice.
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Root formation is dependent on meristematic activity and is influenced by nitrogen supply. We have previously shown that ubiquitin ligase, EL5, in rice (Oryza sativa) is involved in the maintenance of root meristematic viability. When mutant EL5 protein is overexpressed to dominantly inhibit the
High-resolution mapping of Rsn1, a locus controlling sensitivity of rice to a necrosis-inducing phytotoxin from Rhizoctonia solani AG1-IA.
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Rhizoctonia solani is a necrotrophic fungal pathogen that causes disease on many crop-plant species. Anastomosis group 1-IA is the causal agent of sheath blight of rice (Oryza sativa L.), one of the most important rice diseases worldwide. R. solani AG1-IA produces a necrosis-inducing phytotoxin and
Shoot tip necrosis of in vitro plant cultures: a reappraisal of possible causes and solutions
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Shoot tip necrosis is a physiological condition that negatively impacts the growth and development of in vitro plant shoot cultures across a wide range of species. Shoot tip necrosis is a physiological condition and disorder that can arise in plantlets or shoots in vitro that results in death of the
[Immunotherapy of cancer using cytokinins. Use and perspectives in lung oncology].
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Progress in genetics now enables the synthesis of molecules acting on the regulation of the immune system which are called cytokines. Currently there are several cytokines, Interferon (IFN), Interleukin 2 (IL2), tumour necrosis factor (TNF) as well as haematopoietic growth factors and these are the
Cytokinin panel in rheumatoid arthritis and correlation with histological patterns of synovitis -- active type of disease.
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Rheumatoid arthritis (RA) is a chronically inflammatory disease of the articular synovial, with severe, progressive and irreversible articular destruction. RA pathogeny implies an autoimmune mechanism, the role of cytokines resulting from the exaggerated production of some cytokines that act as
Cell shape can be uncoupled from formononetin induction in a novel cell line from Callerya speciosa.
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UNASSIGNED
It is the first time that formononetin produced by cell culture and its accumulation was shown to be triggered by specific stress signalling linked jasmonate pathway. Callerya speciosa, an endangered traditional Chinese medicine plant, is intensively used in traditional folk medicine. To
[Effect of H-ATPase stimulators on cyclosporin biosynthesis].
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An analogy was observed between the mechanisms of action of phytohormones on plant cells and cells of the fungus producing cyclosporine. Fusicoccin and cytokinin were shown to have a high stimulating action on the biosynthesis of cyclosporine. The stimulating concentrations of the phytohormones and
Physical, Chemical, Developmental, and Genetic Factors that Modulate the Agrobacterium-Vitis Interaction.
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Tumor formation in Vitis species and hybrids, incited by Agrobacterium tumefaciens, was altered by chemical, physical, developmental, and genetic variables. Knowledge of the effect of these variables was used to develop a stringent in vitro assay system to select parents for a study of genetic
The plant hormone zeatin riboside inhibits T lymphocyte activity via adenosine A2A receptor activation.
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Cytokinins are plant hormones that play an integral role in multiple aspects of plant growth and development. The biological functions of cytokinins in mammalian systems are, however, largely uncharacterized. The naturally occurring cytokinin zeatin riboside has recently been demonstrated to
Gain of function assays identify non-rol genes from Agrobacterium rhizogenes TL-DNA that alter plant morphogenesis or hormone sensitivity.
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This study tested the morphogenetic potential of 15 open reading frames of the TL-DNA of Agrobacterium rhizogenes strain HRI. These open reading frames were expressed individually under the control of the 35S RNA promoter in transgenic tobacco plants (Nicotiana tabacum L.). Expression of three T-DNA
Sucrose and Starch Content Negatively Correlates with PSII Maximum Quantum Efficiency in Tomato (Solanum lycopersicum) Exposed to Abnormal Light/Dark Cycles and Continuous Light.
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Light is most important to plants as it fuels photosynthesis and provides clues about the environment. If provided in unnatural long photoperiods, however, it can be harmful and even lethal. Tomato (Solanum lycopersicum), for example, develops mottled chlorosis and necrosis when exposed to
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