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Antidiarrhoeal activity of some Egyptian medicinal plant extracts.
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The antidiarrhoeal activity of six Egyptian medicinal plant extracts (200 and 400 mg kg(-1)) and their effect on motility of isolated rabbit's duodenum was investigated. Phytochemical screening of the plant extracts for their active constituents was also carried out by TLC. Oral administration of
Transformation of several species of higher plants by Agrobacterium rhizogenes: sexual transmission of the transformed genotype and phenotype.
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The T-DNA of the Ri plasmid from Agrobacterium rhizogenes is compatible with the regeneration of whole plants from genetically transformed roots and is transmitted through meiosis to the progeny of genetically transformed plants in carrot, tobacco, and morning glory (Convolvulus arvensis). The
Nucleotide sequence analysis of TL-DNA of Agrobacterium rhizogenes agropine type plasmid. Identification of open reading frames.
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We have determined the nucleotide sequence of the Ri TL-DNA region from an Agrobacterium rhizogenes agropine-type plasmid using subcloned regions from the essentially identical Ri TL-DNAs from strains A4 and HRI. This sequenced region of 21,126 base pairs (bp) contains the complete TL-DNA region of
Genetic Analysis of Phytophthora nicotianae Populations from Different Hosts Using Microsatellite Markers.
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In all, 231 isolates of Phytophthora nicotianae representing 14 populations from different host genera, including agricultural crops (Citrus, Nicotiana, and Lycopersicon), potted ornamental species in nurseries (Lavandula, Convolvulus, Myrtus, Correa, and Ruta), and other plant genera were
First Report of Pepino mosaic virus on Natural Hosts.
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Pepino mosaic virus (PepMV) is a potexvirus recently identified as the causal agent of a new disease occurring in protected tomato (Lycopersicon esculentum Mill.) crops in the Netherlands (2). PepMV has been subsequently identified in England, Germany, Italy, Morocco, Portugal, and Spain. The new
Comparative biochemical and immunological studies of the glycine betaine synthesis pathway in diverse families of dicotyledons.
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Members of the Chenopodiaceae can accumulate high levels (>100 μmol·(g DW)(-1)) of glycine betaine (betaine) in leaves when salinized. Chenopodiaceae synthesize betaine by a two-step oxidation of choline (choline→betaine aldehyde→ betaine), with the second step catalyzed by betaine aldehyde
Extensive conserved synteny of genes between the karyotypes of Manduca sexta and Bombyx mori revealed by BAC-FISH mapping.
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BACKGROUND
Genome sequencing projects have been completed for several species representing four highly diverged holometabolous insect orders, Diptera, Hymenoptera, Coleoptera, and Lepidoptera. The striking evolutionary diversity of insects argues a need for efficient methods to apply genome
Detection of new viruses in alfalfa, weeds and cultivated plants growing adjacent to alfalfa fields in Saudi Arabia.
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A total of 1368 symptomatic plant samples showing different virus-like symptoms such as mottling, chlorosis, mosaic, yellow mosaic, vein clearing and stunting were collected from alfalfa, weed and cultivated plant species growing in vicinity of alfalfa fields in five principal regions of alfalfa
First Report of Natural Infection of Greenhouse-Grown Tomato and Weed Species by Pelargonium zonate spot virus in Spain.
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Tomato (Lycopersicon esculentum Mill.) plants showing severe chlorotic and necrotic ringspots, line patterns on leaves, and concentric chlorotic ringspots on stems and fruits were observed in plastic greenhouse-grown tomato crops cv. Royesta during the spring of 1996 in Zaragoza province, Northeast
First Report of Cucumber mosaic virus and Turnip vein-clearing virus in Dichondra repens in France, Italy, and China.
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During surveys of Dichondra repens (kidneyweed, family Convolvulaceae) turfs in public gardens of the Franco-Italian Riviera from 1993 to 2003, leaf mosaic and yellow ringspot symptoms have been observed in Antibes, Menton, Nice, and Vallauris (France) and San Remo and La Mortola (Italy). Isolates
Natural Infection of Citrullus colocynthis by Papaya ringspot virus-W in Iran.
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Papaya ringspot virus (PRSV, genus Potyvirus, family Potyviridae) is economically important due to its worldwide distribution and because it can cause serious losses in both cucurbit crops and papaya (3). PRSV has been previously reported from cucurbit crops in Iran (2). In Khuzestan Province,
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