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early/dacsa

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Pàgina 1 des de 838 resultats

Early response to salt ions in maize (Zea mays L.).

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Abscisic acid (ABA) regulates leaf growth and transpiration rate of plants exposed to salt stress. Despite the known fact that cell dehydration is instrumental for the modulation of ABA concentrations when NaCl is high in the external environment, it was never tested as to whether sodium (Na) or
In this study, mature seeds of Zea mays (Malka 16) were irrigated with untreated and UASB-treated wastewater with combination of 50% textile and 50% sewage at hydraulic retention times (HRTs) of 0, 5, 10, and 15 h. Four other treatments diluted with distilled water (DW) were also evaluated.

Root cell ultrastructure of Zea mays embryo during early stages of germination.

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The ultrastructure of root cells of the germinating corn embryo has been studied during the first 72 hours of soaking. The most spectacular ultrastructural modifications occur in the nucleus. In the dry seed, the chromatin is heavily condensed and complete dispersion occurs during the first 8 hr of

The transcriptome landscape of early maize meiosis.

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BACKGROUND A major step in the higher plant life cycle is the decision to leave the mitotic cell cycle and begin the progression through the meiotic cell cycle that leads to the formation of gametes. The molecular mechanisms that regulate this transition and early meiosis remain largely unknown. To

Early appearance of methoxyflurane fluorometabolites in mice.

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The biotransformation of methoxyflurane produces two fluorometabolites: inorganic fluoride (F) and an acid-labile fluorocompound (OALF). These have been assayed in the serum of male mice 10, 30, and 100 minutes after either ip or sc injections of 0.7 microliter of methoxyflurane (MOF) per gram of

Directly dated starch residues document early formative maize (Zea mays L.) in tropical Ecuador.

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The study of maize (Zea mays L.) domestication has advanced from questions of its origins to the study-and debate-of its dietary role and the timing of its dispersal from Mexico. Because the investigation of maize's spread is hampered by poor preservation of macrobotanical remains in the Neotropics,

Early responses to gibberellic acid in a dwarf maize mutant (Zea mays L. d 1).

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Early effects of gibberellic acid (GA3) (1-4 h treatment) on the ion ratios in a dwarf maize mutant (Zea mays L. d 1) showing normal growth after hormone treatment, have been investigated by electron microprobe analysis. GA3 exerts a different effect on the ion ratios in plastids, cytoplasm and

The regulatory landscape of early maize inflorescence development

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Background: The functional genome of agronomically important plant species remains largely unexplored, yet presents a virtually untapped resource for targeted crop improvement. Functional elements of regulatory DNA revealed through

[RNA synthesis and translocation in root cells of Zea mays during early stages of germination].

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RNA synthesis in root of germinating corn during the period extending from the 4th to the 8th hr after soaking is localized exclusively in the chromatin. This unusual situation allowed us to follow easily by section autoradiography the fate of the chromatin-synthesized RNA. The embryo was

Flaxseed supplementation and early markers of colon carcinogenesis.

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Since flaxseed ingestion produces potentially anticarcinogenic lignans in the colon, this study determined whether flaxseed decreases the risk for colon carcinogenesis. Following a single injection of azoxymethane (15 mg/kg body wt.), five groups of male Sprague-Dawley rats were fed a high-fat (20%

Water-Soluble Lignins from Different Bioenergy Crops Stimulate the Early Development of Maize (Zea mays, L.).

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The molecular composition of water-soluble lignins isolated from four non-food bioenergy crops (cardoon CAR, eucalyptus EUC, and two black poplars RIP and LIM) was characterized in detail, and their potential bioactivity towards maize germination and early growth evaluated. Lignins were found to not

Early-onset colorectal cancer: initial clues and current views.

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Over the past several decades, the incidence of early-onset colorectal cancer (EOCRC; in patients <50 years old) has increased at an alarming rate. Although robust and scientifically rigorous epidemiological studies have sifted out environmental elements linked to EOCRC, our knowledge of the

Micronutrient seed priming improves maize ( Zea mays) early seedling growth in a micronutrient deficient soil

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Micronutrient deficiency is a major constraint to crop productivity in South Africa. Agronomic interventions such as nutrient seed priming (NSP) could significantly improve stand establishment in micronutrient deficient soils. However, the effectiveness of the technique depends on the efficacy of

Regulation of Gene Expression in Developing Zea mays Embryos: Protein Synthesis during Embryogenesis and Early Germination of Maize.

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Polypeptides synthesized in dissected embryos of Zea mays at different stages of embryogenesis and early germination have been characterized by their migration in two-dimensional gel electrophoresis. This analysis has been carried out with in vivo labeled polypeptides from excised embryos and with

Maize VKS1 Regulates Mitosis and Cytokinesis During Early Endosperm Development.

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Cell number is a critical factor that determines kernel size in maize (Zea mays). Rapid mitotic divisions in early endosperm development produce most of the cells that make up the starchy endosperm; however, the mechanisms underlying early endosperm development remain largely unknown. We
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