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Tobacco Nectarin III is a bifunctional enzyme with monodehydroascorbate reductase and carbonic anhydrase activities.

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Tobacco plants secrete a limited array of proteins (nectarins) into their floral nectar. N-terminal sequencing of the Nectarin II ( NEC2; 35kD) and the Nectarin III ( NEC3; 40kD) proteins revealed that they both share identity with dioscorin, the major soluble protein of yam tubers. These sequences

Leaf Spot Caused by Epicoccum latusicollum on Tobacco in China

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Tobacco (Nicotiana tabacum L.) is a leafy, annual, solanaceous plant grown commercially for its leaves in China. In continuing research on foliar diseases of tobacco in Guizhou province in August 2019, diseased leaves of tobacco that had sandy beige, elliptical or irregular shaped lesions,

Evidence for recombination among isolates of Tobacco leaf curl Japan virus and Honeysuckle yellow vein mosaic virus.

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Complete nucleotide sequences of Tobacco leaf curl Japan virus (TbLCJV) isolates from infected tomato ( Lycopersicon esculentum) plants in Nara (-[Jp2], 2764 nt; -[Jp3], 2761 nt), Kochi (-[Koc], 2760 nt) and Yamaguchi (-[Yam], 2758 nt) Prefectures, of Japan were determined. These sequences were

First Report of Cucumber mosaic virus in Yams (Dioscorea spp.) in Ghana, Togo, and Republic of Benin in West Africa.

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Yam (Dioscorea spp., family Dioscoreaceae) is one of the most important food crops cultivated in the West African yam zone comprising the forest and savannah areas of Nigeria, Ghana, Côte d'Ivoire, Republic of Benin, and Togo, which account for more than 90% of the 4.59 million ha of yam cultivation

Daphne mosaic virus (DapMV), a new potyvirus from Daphne mezereum in the Czech Republic.

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Daphne shrubs with light green rings and mosaic on leaves contained flexuous filamentous virions (696 x 13 nm) and cylindrical inclusions typical of the subdivision III of Edwardson's classification for inclusions induced by members of the family Potyviridae. Decoration tests using antisera to 67

Partial Characterization of a Carla-Like Virus Infecting Yam (Dioscorea spp.) from China.

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Dioscorea opposita (yam) from China was tested for viruses during post-entry quarantine in New Zealand during 2004. No obvious symptoms or virus particles were observed from yam. Mechanically inoculated Nicotiana occidentalis cvs. 37B and P1 produced systemic chlorosis, leaf reduction, and stunting,

Intracellular localization of a class IV chitinase from yam.

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Genomic DNA encoding a class IV chitinase was cloned from yam (Dioscorea opposita Thunb) leaves in previous research (Biosci. Biotechnol. Biochem., 68, 1508-1517 (2004)). But this chitinase had an additional sequence composed of eight amino acids (a C-terminal extension) at the C-terminal, compared

Street foods exacerbate effects of the environmental burden of polycyclic aromatic hydrocarbons (PAHs) in Nigeria.

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Polycyclic aromatic hydrocarbons (PAHs) are a large group of well-known toxicants with carcinogenic potential and other health effects including on the immune system. The high health risks of non-communicable diseases and relevant comorbidities in Africa, particularly in contaminated areas like

Amino acid sequence of the N-terminal domain of yam (Dioscorea japonica) aerial tuber acidic chitinase. Evidence for the presence of a wheat germ agglutinin domain in matured acidic chitinase from unstressed tuber.

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The amino acid sequence of the N-terminal domain of acidic chitinase from unstressed aerial tuber was determined and proved the presence of an N-terminal domain in acidic chitinase. The amino acid sequence was determined on a pyroglutamylaminopeptidase-treated N-terminal fragment of V8 protease and

Production of Diosgenin in somatic callus tissues of Dioscorea floribunda.

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Shoot-tip and tuber-derived callus tissues of Dioscorea floribunda Mart, and Gal. when grown in revised tobacco medium supplemented with 1 and 2 mg/12,4-D, contained 0.295% and 1.33% diosgenin, respectively.

Rapid isolation of promoter sequences by TAIL-PCR: the 5'-flanking regions of Pal and Pgi genes from yams (Dioscorea).

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Using a modified TAIL-PCR technique, the 5'-flanking regions of the phenylalanine ammonia lyase (Pal) genes of a yam species, Dioscorea bulbifera, and the phosphoglucose isomerase (Pgi) gene of D. tokoro were successfully isolated. Two novel modifications of the TAIL-PCR procedure introduced here,

The genomes of many yam species contain transcriptionally active endogenous geminiviral sequences that may be functionally expressed.

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Endogenous viral sequences are essentially 'fossil records' that can sometimes reveal the genomic features of long extinct virus species. Although numerous known instances exist of single-stranded DNA (ssDNA) genomes becoming stably integrated within the genomes of bacteria and animals, there remain

Plant-parasitic Nematode Problems in the Pacific Islands.

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The Pacific islands have a diverse range of food and cash crops with indigenous and introduced nematode problems. The staple food crops have serious nematode pests, such as Meloidogyne spp. on sweet potato, Hirschmanniella miticausa causing corm rot of taro, and Pratylenchus coffeae and Radopholus

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