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Página 1 a partir de 539 resultados
Transition from common tobacco mosaic virus to the Nicotiana glauca form.
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A common set of developmental miRNAs are upregulated in Nicotiana benthamiana by diverse begomoviruses.
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BACKGROUND
Begomoviruses are single-stranded DNA viruses that cause economically important diseases of many crops throughout the world and induce symptoms in plants, including enations, leaf curling and stunting, that resemble developmental abnormalities. MicroRNAs (miRNAs) are small endogenous RNAs
Characterization of three hormone mutants of Nicotiana plumbaginifolia: evidence for a common ABA deficiency.
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Various auxin-resistant Nicotiana plumbaginifolia mutants have already been isolated, including 1217 which shows cross-resistance to paclobutrazol. Recently, a cytokinin-resistant mutant, CKR1, has been characterized and has been shown to be affected in abscisic acid (ABA) biosynthesis. We have
One Small RNA of Fusarium graminearum Targets and Silences CEBiP Gene in Common Wheat.
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The pathogenic fungus Fusarium graminearum (F. graminearum), causing Fusarium head blight (FHB) or scab, is one of the most important cereal killers worldwide, exerting great economic and agronomic losses on global grain production. To repress pathogen invasion, plants have
Arabidopsis thaliana germin-like proteins: common and specific features point to a variety of functions.
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Germin-like proteins (GLPs) are ubiquitous plant proteins encoded by diverse multigene families. It is not known whether they share germin's unusual biochemical properties and oxalate oxidase activity. Using specific antibodies, we have studied three GLPs (AtGER1. AtGER2 and AtGER3) in Arabidopsis
Acidic α-galactosidase is the most abundant nectarin in floral nectar of common tobacco (Nicotiana tabacum).
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OBJECTIVE
To date, most floral nectarins (nectar proteins) are reported to function in nectar defence, particularly for insect-pollinated outcrossing species. We compared nectarin composition and abundance in selfing common tobacco (Nicotiana tobaccum) with outcrossing ornamental tobacco plants to
Characterization and Mapping of a Novel Premature Leaf Senescence Mutant in Common Tobacco (Nicotiana tabacum L.).
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As the last stage of plant development, leaf senescence has a great impact on plant's life cycle. Genetic manipulation of leaf senescence has been used as an efficient approach in improving the yield and quality of crop plants. Here we describe an ethyl methane sulfonate (EMS) mutagenesis induced
First Report of Alfalfa mosaic, Bean common mosaic, and Broad bean stain viruses in Macrotyloma axillare.
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Chlorotic mottling, mosaic, malformation, and rolling were observed on leaves of the forage legume species Macrotyloma axillare at the International Livestock Research Institute seed multiplication site in Debre Zeit, Ethiopia, in September 1999. M. axillare is a drought-resistant forage legume and
Specific and common changes in Nicotiana benthamiana gene expression in response to infection by enveloped viruses.
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Microarrays derived from Solanum tuberosum expressed sequence tags were used to test the hypothesis that genetically distinct enveloped viruses elicit unique changes in Nicotiana benthamiana gene expression. The results of our study, which included Sonchus yellow net virus (SYNV), a plant
Mobile arrays of vacuole ripples are common in plant cells.
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In tobacco (Nicotiana tabacum L.), a structure frequently interpreted as endoplasmic reticulum, was clearly identified as a set of ripple-shaped protrusions of the vacuole into the surrounding cytoplasm. The occurrence in other species suggests that these ripples might be common in vacuolated plant
Genome-wide identification and expression analysis of the WRKY gene family in common tobacco (Nicotiana tabacum L.).
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The coding products of WRKY gene family plays important roles in plant growth and development as well as in various stress responses. They have been identified in various plants, but only few in common tobacco (Nicotiana tabacum L.). In this study, 164 putative WRKY proteins in the common tobacco
Biological and molecular characterization of Soybean yellow common mosaic virus, a new species in the genus Sobemovirus.
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A novel soybean-infecting sobemovirus termed Soybean yellow common mosaic virus (SYCMV) was characterized. The virus has a single, positive-strand RNA genome of 4152 nucleotides. The virus contains four putative open reading frames encoding P1 (78-566 nt), polyprotein ORF2a (524-2248 nt), polymerase
Nicotiana tabacum seed endophytic communities share a common core structure and genotype-specific signatures in diverging cultivars.
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Seed endophytes of crop plants have recently received increased attention due to their implications in plant health and the potential to be included in agro-biotechnological applications. While previous studies indicated that plants from the Solanaceae family harbor a highly diverse seed
Genome organization of ageratum yellow vein virus, a monopartite whitefly-transmitted geminivirus isolated from a common weed.
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A full-length copy of a single genomic component of the whitefly-transmitted geminivirus ageratum yellow vein virus (AYVV) has been cloned from an extract of infected Ageratum conyzoides originating from Singapore. Sequence analysis shows that the genomic component encodes two virion-sense (V1 and
Cloning, functional expression, and characterization of the raffinose oligosaccharide chain elongation enzyme, galactan:galactan galactosyltransferase, from common bugle leaves.
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Galactan:galactan galactosyltransferase (GGT) is a unique enzyme of the raffinose family oligosaccharide (RFO) biosynthetic pathway. It catalyzes the chain elongation of RFOs without using galactinol (alpha-galactosyl-myoinositol) by simply transferring a terminal alpha-galactosyl residue from one
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