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Página 1 a partir de 35 resultados
Analysis of sulphur and chlorine induced DNA cytosine methylation alterations in fresh corn (Zea mays L. saccharata and rugosa) leaf tissues by methylation sensitive amplification polymorphism (MSAP) approach.
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DNA (cytosine) methylation mechanism is another way through which plants respond to various cues including soil fertility amendments and abiotic stresses, and the mechanism has been used to infer some physiological, biochemical or adaptation processes. Despite numerous studies on global DNA
Epigenetic variation, inheritance, and parent-of-origin effects of cytosine methylation in maize (Zea mays).
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Pure epigenetic variation, or epigenetic variation that is independent of genetic context, may provide a mechanism for phenotypic variation in the absence of DNA mutations. To estimate the extent of pure epigenetic variation within and across generations and to identify the DNA regions targeted, a
Selective acquisition and retention of genomic sequences by Pack-Mutator-like elements based on guanine-cytosine content and the breadth of expression.
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The process of gene duplication followed by sequence and functional divergence is important for the generation of new genes. Pack-MULEs, nonautonomous Mutator-like elements (MULEs) that carry genic sequence(s), are potentially involved in generating new open reading frames and regulating parental
Maize plants prime anti-herbivore responses by the memorizing and recalling of airborne information in their genome.
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Intact maize plants prime for defensive action against herbivory in response to herbivore-induced plant volatiles (HI PVs) emitted from caterpillar-infested conspecific plants. The recent research showed that the primed defense in receiver plants that had been exposed to HI PVs was maintained for at
Shotgun metagenomic data of root endophytic microbiome of maize ( Zea mays L.)
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This dataset represents the root endophytic microbial community profile of maize (Zea mays L.), one of the largest food crops in South Africa, using a shotgun metagenomic approach. To the best of our understanding, this is the first account showcasing the endophytic microbial diversity in
The solute specificity profiles of nucleobase cation symporter 1 (NCS1) from Zea mays and Setaria viridis illustrate functional flexibility.
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The solute specificity profiles (transport and binding) for the nucleobase cation symporter 1 (NCS1) proteins, from the closely related C4 grasses Zea mays and Setaria viridis, differ from that of Arabidopsis thaliana and Chlamydomonas reinhardtii NCS1. Solute specificity profiles for NCS1 from Z.
Tissue-specific differences in cytosine methylation and their association with differential gene expression in sorghum.
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It has been well established that DNA cytosine methylation plays essential regulatory roles in imprinting gene expression in endosperm, and hence normal embryonic development, in the model plant Arabidopsis (Arabidopsis thaliana). Nonetheless, the developmental role of this epigenetic marker in
Extensive maternal DNA hypomethylation in the endosperm of Zea mays.
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A PCR-based genomic scan has been undertaken to estimate the extent and ratio of maternally versus paternally methylated DNA regions in endosperm, embryo, and leaf of Zea mays (maize). Analysis of several inbred lines and their reciprocal crosses identified a large number of conserved,
Structural features and methylation patterns associated with paramutation at the r1 locus of Zea mays.
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In paramutation, two alleles of a gene interact and, during the interaction, one of them becomes epigenetically silenced. The various paramutation systems that have been studied to date exhibit intriguing differences in the physical complexity of the loci involved. B and Pl alleles that participate
Methylation-spanning linker libraries link gene-rich regions and identify epigenetic boundaries in Zea mays.
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Complex cereal genomes are largely composed of small gene-rich regions intermixed with 5 kb to 200 kb blocks of repetitive DNA. The repetitive DNA blocks are usually 5-methylated at 5'-CG-3' and 5'-CNG-3' cytosines in most or all adult tissues, while the genes are generally unmethylated at these
A non-synonymous SNP within the isopentenyl transferase 2 locus is associated with kernel weight in Chinese maize inbreds (Zea mays L.).
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BACKGROUND
Kernel weight, controlled by quantitative trait loci (QTL), is an important component of grain yield in maize. Cytokinins (CKs) participate in determining grain morphology and final grain yield in crops. ZmIPT2, which is expressed mainly in the basal transfer cell layer, endosperm, and
TnpA product encoded by the transposable element En-1 of Zea mays is a DNA binding protein.
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TnpA protein, the function encoded by the most abundant transcript of En-1 was expressed in Escherichia coli. DNA binding experiments with partially purified tnpA protein revealed that it binds to the subterminal repetitive region of En-1. TnpA protein recognizes a 12-bp-long sequence motif which is
The putative transposase of transposable element Ac from Zea mays L. interacts with subterminal sequences of Ac.
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The Ac-specific ORFa protein, overexpressed in a baculovirus system, specifically binds to several subterminal fragments of Ac. The 11 bp long inverted repeats of the transposable element are not bound by the ORFa protein. Major ORFa protein-binding sites were delineated on 60 and 70 bp long
Massive Loss of DNA Methylation in Nitrogen-, but Not in Phosphorus-Deficient Zea mays Roots Is Poorly Correlated With Gene Expression Differences.
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DNA methylation in plants plays a role in transposon silencing, genome stability and gene expression regulation. Environmental factors alter the methylation pattern of DNA and recently nutrient stresses, such as phosphate starvation, were shown to alter DNA methylation. Furthermore, DNA methylation
Genome-wide screen of genes imprinted in sorghum endosperm, and the roles of allelic differential cytosine methylation.
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Imprinting is an epigenetic phenomenon referring to allele-biased expression of certain genes depending on their parent of origin. Accumulated evidence suggests that, while imprinting is a conserved mechanism across kingdoms, the identities of the imprinted genes are largely species-specific. Using
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