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cucurbita/− nicotine
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Expression of Pumpkin CmbHLH87 Gene Improves Powdery Mildew Resistance in Tobacco.
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Powdery mildew (PM), caused by Podosphaera xanthii, is a major threat to the global cucurbit yield. The molecular mechanisms underlying the PM resistance of pumpkin (Cucurbita moschata Duch.) are largely unknown. A homolog of the basic helix-loop-helix (bHLH) transcription factor was
Improved Powdery Mildew Resistance of Transgenic Nicotiana benthamiana Overexpressing the Cucurbita moschata CmSGT1 Gene.
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Powdery mildew (PM), which is mainly caused by Podosphaera xanthii, is a serious biotrophic pathogen disease affecting field-grown and greenhouse-grown cucurbit crops worldwide. Because fungicides poorly control PM, the development and cultivation of PM-resistant varieties is critical. A
The Association of Severe Epidemics of Cucumber Mosaic in Commercial Fields of Pepper and Tobacco in North Florida with Inoculum in Commelina benghalensis and C. communis.
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Since 1995, severe epidemics of cucumber mosaic virus (CMV) have occurred in select fields of tobacco (Nicotiana tabacum) and pepper (Capsicum annuum) in three counties in northern Florida. Yield losses greater than 50% have occurred in both crops. Baker and Zettler (1) identified the presence of
First Report of Tobacco ringspot virus in Pumpkin (Cucurbita pepo) in Illinois.
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During a survey of commercial pumpkin and squash fields for viruses, conducted in Illinois in 2005, Tobacco ringspot virus (TRSV) was identified for the first time in symptomatic pumpkin samples collected during August and September from Douglas, Kankakee, Piatt, and Tazewell counties in one of
First Confirmed Report of Tobacco ringspot virus in Cucurbits Crops in Oklahoma.
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Cucurbits are major cash crops of vegetable growers in Oklahoma, particularly watermelon, which is the official state vegetable. In 2010, during a survey for cucurbit viruses (1), symptomatic leaf samples of cucumber (Cucumis sativus), cantaloupe (Cucumis melo), pumpkin, (Cucurbita pepo), squash
Protein filaments-structural components of the phloem exudate : I. Observations with Cucurbita and Nicotiana.
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Fine structure and chemical composition of the phloem exudate of Cucurbita maxima and Nicotaiana glauca x suaveolens are investigated. Filamentous structures, several microns in length, are identified as structural components of the exudate by means of negative staining and electron microscopy. Two
Fine structural studies of P-proteins in Cucurbita, Cucumis, and Nicotiana.
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"Chitin-specific" peroxidases in plants.
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The activity of various plant peroxidases and the ability of their individual isoforms to bind chitin was studied. Some increase in peroxidase activity was observed in crude extracts in the presence of chitin. Activated peroxidases of some species fell in the fraction not sorbed on chitin and those
Restriction site and genetic map of Cucurbita pepo chloroplast DNA.
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A detailed restriction map of squash chloroplast DNA (cpDNA) was constructed with five restriction endonucleases, SalI, PvuII, BglI, SacII, and PstI. The cleavage sites were mapped by sequential digestion of cpDNA using low-gelling temperature agarose. The restriction map shows that squash cpDNA is
Italian horticultural and culinary records of summer squash (Cucurbita pepo, Cucurbitaceae) and emergence of the zucchini in 19th-century Milan.
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Summer squash, the young fruits of Cucurbita pepo, are a common, high-value fruit vegetable. Of the summer squash, the zucchini, C. pepo subsp. pepo Zucchini Group, is by far the most cosmopolitan. The zucchini is easily distinguished from other summer squash by its uniformly cylindrical shape and
First Report of Carnation mottle virus in Calla lily (Zantedeschia spp.).
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Calla lilies are ornamental plants of major economic importance in Taiwan. They are grown in the central and northern areas of the island, and ≈3 million stems are shipped annually. Calla lilies are susceptible to several viruses (1). Infections by Cucumber mosaic virus, Dasheen mosaic virus, Turnip
First Report of Twenty-two New Hosts of Potato leafroll virus.
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The known host range of Potato leafroll virus (PLRV, genus Polerovirus, family Luteoviridae) is narrow, consisting of 21 species in 5 families: 3 Amaranthaceae, 2 Cruciferae, 1 Nolanaceae, 1 Portulacaceae, and 14 Solanaceae. Over a period of years, we identified 22 additional host species of PLRV in
First Report of Yellow Nutsedge (Cyperus esculentus) and Purple Nutsedge (C. rotundus) in Georgia Naturally Infected with Impatiens necrotic spot virus.
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Impatiens necrotic spot virus (INSV), family Bunyaviridae, genus Tospovirus, is an emerging virus found mostly in ornamentals under greenhouse production. INSV has been detected in peanut (Arachis hypogaea L.) in Georgia and Texas (3) and recently in tobacco (Nicotiana tabacum L.) in the
First Report of Pseudomonas syringae pv. syringae Causing Bacterial Leaf Spots of Oil Pumpkin (Cucurbita pepo) in Serbia.
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Oil pumpkin (Cucurbita pepo L.) is commonly used for oil production, mainly in central and eastern Europe (1). In Serbia, it grows only in the north (Vojvodina Province), up to 1,500 ha. In June 2008, typical bacterial spot symptoms (dark green, water-soaked, transparent and greasy spots with yellow
Salicylic acid-induced resistance to Cucumber mosaic virus in squash and Arabidopsis thaliana: contrasting mechanisms of induction and antiviral action.
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Salicylic acid (SA)-induced resistance to Cucumber mosaic virus (CMV) in tobacco (Nicotiana tabacum) results from inhibition of systemic virus movement and is induced via a signal transduction pathway that also can be triggered by antimycin A, an inducer of the mitochondrial enzyme alternative
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