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Cladosporium cladosporioides Identified in China on Tobacco Seeds.
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Tobacco (Nicotiana tabacum L.) is a leafy, annual, solanaceous plant grown commercially for its leaves. China is the biggest single tobacco market and accounts for more than 40% of the global tobacco consumption (1). Tobacco seed harvested in Guiyang, Guizhou Province, China, are commonly
Periplasmic multilamellar membranous structures in Nicotiana tabacum L. pollen grains treated with Ni²⁺ or Cu²⁺.
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Essential trace elements Ni(2+) and Cu(2+) can block pollen germination without causing cell death. Mechanisms of this effect remain unclear. Using TEM, we studied the effects of Ni(2+) or Cu(2+) treatment on the ultrastructure of the aperture regions in tobacco pollen preparing to germinate in
Ultrastructure of the shoot apex of Chenopodium album and certain other seed plants.
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The ultrastructure of cells of the vegetative shoot apices is described for Chenopodium album, Kalanchoë blossfeldiana and K. laxiflora, Bryophyllum daigremontianum, Nicotiana rustica, and N. tabacum (Maryland Mammoth), and Ginkgo biloba. A less intensive study was made of the last three listed. The
Cytotoxic allelochemicals induce ultrastructural modifications in Cassia tora L. and mitotic changes in Allium cepa L.: a weed versus weed allelopathy approach.
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The stress induced by allelochemicals present in stem aqueous extract (SAE) of Nicotiana plumbaginifolia on alterations in growth, ultrastructure on Cassia tora L., and mitotic changes on Allium cepa L. were inspected. Application of SAE at different concentrations (0.5, 1, 2, and 4%) expressively
Arabidopsis senescence-associated protein DMP1 is involved in membrane remodeling of the ER and tonoplast.
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BACKGROUND
Arabidopsis DMP1 was discovered in a genome-wide screen for senescence-associated membrane proteins. DMP1 is a member of a novel plant-specific membrane protein family of unknown function. In rosette leaves DMP1 expression increases from very low background level several 100fold during
Expression of synthetic human tropoelastin (hTE) protein in Nicotiana tabacum.
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Plant molecular farming (PMF) is an important growing prospective approach in plant biotechnology; it includes production of recombinant pharmaceutical and industrial proteins in large quantities from engineered plants. Elastin is a major protein component of tissues that require elasticity, it
First Report of Leaf Spot Caused by Nigrospora aurantiaca in Tobacco in China
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Tobacco (Nicotiana tabacum L.) is one of the most important cash crops in China. In June 2019, tobacco (cv. Yunyan 87) samples with gray spots surrounded by yellowish ring were collected in Zhengan (107.43° N, 28.55° E), Guizhou province, China. Pieces of leaf tissue (3 mm × 3 mm) that were cut at
First Report of Leaf Blight on Saposhnikovia divaricata by Pseudomonas viridiflava in Gansu, China.
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Saposhnikovia divaricata (Turcz) Schischk, a perennial plant in the Umbelliferae, is widely cultivated in north China. As a traditional Chinese medicine, it can be used to cure colds and rheumatism (1). During disease surveys on medicinal plants in August 2010, a bacterial leaf blight was discovered
Yellow Stunt, a Tobacco Disease Caused by Pythium dissotocum, in Southern Parts of Brazil.
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Yellow stunt, an emerging disease of tobacco (Nicotiana tabacum), has become increasingly prevalent in tobacco-growing regions in southern Brazil. Major symptoms are moderate to severe stunting, yellowing of leaves, severe wilting, darkened roots, necrosis of stem tissue directly above the soil
A New Leaf Blight of Rice Caused by Pantoea ananatis in India.
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In September 2008, a new blight disease appeared on basmati rice (Oryza sativa L.) in fields in the northern states of India, including Uttar Pradesh, Haryana, and Punjab. First symptoms were water-soaked lesions at the tip of rice leaves. Lesions eventually spread down the leaf blades. Infected
First Report of Cercospora nicotianae Causing Frog Eye Spot in Cigar Tobacco in Hainan, China
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Cigar tobacco (Nicotiana tabacum L.), sun air-cured tobacco, originally from South America, with a main use to rolling cigar wrapper that is different from flue-cured tobacco. In April, 2018, diseased leaves were observed in cigar tobacco in some fields in Danzhou city (109.58°E, 19.53°N) and
First Report of Alternaria longipes Causing Leaf Spot of Potato Cultivar Sante in Pakistan.
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Potato (Solanum tuberosum) is one of the most important vegetable crops worldwide, including Pakistan. During surveys from November to February of 2011 to 2013 in Sahiwal (Punjab), a severe leaf spot disease, new to farmers, was recorded. Symptoms consisted of 1- to 3-mm diameter black circular
First Report of Fire Blight of Apricot ( Prunus armeniaca) Caused by Erwinia amylovora in Korea
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During a survey in May 2020, symptoms of blight were observed on apricot (Prunus armeniaca cv. undetermined) in an orchard (37°06´01.5″N 127°57´44.9″E) in Chungju, South Korea, where fire blight of apple occurred. Three apricot trees in the apple orchard were heavily diseased and showed
Effects of brand variants on smokers' choice behaviours and risk perceptions.
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BACKGROUND
Australian tobacco companies have introduced evocative variant names that could re-create the aspirational connotations plain packaging aims to remove. To inform future regulation, we explored how brand descriptors affected smokers' responses to plain packs featuring different variant
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
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