• Journal of Plant Biotechnology
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• v.1 no.2
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• pp.85-90
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• 1999

In order to protect fungal diseases, leaf disc explants of Solanum tuberosum cultivar, Belchip, was infected with an Agrobacterium MP90 strain containing chimeric gene construct, consisting of antibiotic resistance and chitinase gene driven by the CaMV 35S promoter, for transformation. Regenerated multiple shoots were selected on a medium containing kanamycin and carbenicillin after exposure to Agrobacterium. The presence and integration of the npt II and chitinase gene were confirmed by polymerase chain reaction(PCR). Northern blot analysis indicated that the genes coding for the enzyme could be expressed in potato plants. The chitinase activity of transgenic potato plants was higher than the control potato.

• Proceedings of the Korean Society of Plant Pathology Conference
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• 2003.10a
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• pp.138.1-138
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• 2003

Potato mop-top virus(PMTV) was identified from Solanum tuberosum cv. Gawon showing bright chlorotic mottle symptom in Namwon, Korea. Samples were collected green-house in February, 2003. Electron microscopic examination of negatively stained preparation revealed that PMTV were rigid-rod shaped particles about 100-150, 250-300 nm x 18-20 nm in length. In ultrathin sections of leaf tissue from diseased potato plants, cluster of viruses particles were observed in the cytoplasm. TAS-ELISA determined that the virus was serologically related to PMTV. PMTV produced double ring necrotic local lesion in inoculated leaf of Chenopodium amaranticolor in incubated at 15$^{\circ}C$. The PMTV could be detected with RT-PCR using PMTV detectable primer set designed to amplify about 540 bp of the partial CP gene of PMTV

• BMB Reports
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• v.44 no.10
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• pp.692-697
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• 2011

To investigate the pathways of oxidoreductases in plants, 2 key components in thioredox systems i.e. thioredoxin h (Trx h) and NADPH-dependent thioredoxin reductase (NTR) genes were first isolated from tomatoes (Solanum lycopersicum). Subsequently, the coding sequences of Trx h and NTR were inserted into pET expression vectors, and overexpressed in Escherichia coli. In the UV-Visible spectra of the purified proteins, tomato Trx h was shown to have a characteristic 'shoulder' at ~290 nm, while the NTR protein had the 3 typical peaks unique to flavoenzymes. The activities of both proteins were demonstrated by following insulin reduction, as well as DTNB reduction. Moreover, both NADPH and NADH could serve as substrates in the NTR reduction system, but the catalytic efficiency of NTR with NADPH was 2500-fold higher than with NADH. Additionally, our results reveal that the tomato Trx system might be involved in oxidative stress, but not in cold damage.

• Journal of Plant Biology
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• v.39 no.3
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• pp.185-188
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• 1996

Randomly amplified polymorphic DNAs were employed to study the genetic variation and gene introgression in potato dihaploids (2n=24) which were generated after interspecific pollination of tetraploid cultivars (2n=4X=48, Solanum tuberosum cv Irish Cobbler, Superior and Dejima) by haploid inducer clones (2n=2X=24, Solanum phureja 1.22, Hes-5 and Hes-6). Genetic variation and DNA marker segregation among dihaploids were observed. Most dihaploids contain S. tuberosum specific RAPD markers but haploid inducer-specific RAPD markers were also found in some dihaploids. Of six different arbitrary 10-mer oligonucletide primers which showed polymorphism betwen tetraploid cultivars and haploid inducers used, three generated amplification products which seemed to be derived from the S. phureja parent. Our results indicate that chromosomes of dihaploids may not be pure S. tuberosum and the dihaploids may not be produced by parthenogenesis.

• The Plant Pathology Journal
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• v.28 no.3
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• pp.248-258
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• 2012

Potato (Solanum tuberosum) is one of the most important food crops worldwide and yields of potato can be affected by virus infection. While more than 40 viruses have been found in potato, only nine viruses (potato leafroll virus, potato viruses A, M, S, V, X and Y, potato moptop virus and tobacco rattle virus) and one viroid (potato spindle tuber viroid) have a significant economic impact on potato, worldwide. This review describes the geographical distribution of the most important viruses infecting potato and the genes for resistance or tolerance that have been identified against these various infectious agents. In some cases such resistance genes have been found only in other Solanum species. Few genes for resistance to the vectors of these viruses have been obtained and even fewer have been deployed successfully. However, transgenic resistance in potato has been achieved against seven of these disease agents.

• Proceedings of the PSK Conference
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• 2003.04a
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• pp.155.2-156
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• 2003

The adducts of lipid peroxidation and related aldehydic end are mediators of chronic poisoning and affect the development of chronic liver damage leading to fibrosis and cirrhosis. Substances delayed or suppresed lipid peroxidation could have an antioxidant and protective effect in liver disease. In this study, it was attempted to find out above mentioned effect of Solanum lycopersicum investigated in CCl4 induce liver fibrosis model. (omitted)

• Korean Journal of Medicinal Crop Science
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• v.10 no.4
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• pp.263-268
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• 2002

Acifluorfen-tolerant callus lines of Solanum ptycanthum were isolated by stepwise selection. Growth of the unselected line was completely inhibited at 0.5 uM. while some selected lines grew at 8 uM acifluorfen. Twenty-two of twenty-five acifluorfen-tolerant callus lines regenerated shoots. Many of the regenerated somaclones were variants, differing in leaf shape, leaf color, number of flower parts, flower color, and fertility. The acifluorfen tolerant S. ptycanthum callus lines differed.

• Food Science and Biotechnology
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• v.14 no.2
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• pp.228-232
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• 2005

The effect of a potato ethanol extract was investigated on Freund's complete adjuvant (FCA)-induced arthritis. The oral administration of the potato extract, at doses of 100 and 200 mg/kg once a day for 21 days, significantly reduced hindpaw swelling and the production of inflammatory cytokines (TNF-${\alpha}$, IL-$1{\beta}$ and IL-6). Treatment with the potato extract also decreased the plasma levels of creatinine, triglyceride and LDL-cholesterol, and the activities of AST and ALT compared with those of a control group. These results suggest that the potato extract might be beneficial in the treatment of chronic inflammatory disorders.

• Bulletin of the Korean Chemical Society
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• v.35 no.8
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• pp.2529-2532
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• 2014

• Journal of Plant Biotechnology
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• v.7 no.3
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• pp.143-148
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• 2005

The coat protein mediated resistance to potato virus Y is assessed here in transgenic potato plants (Solanum tuberosum L., cv Claustar). Therefore, the corresponding cDNA from tunisian isolate of the virus was cloned into Agrobacterium tumefaciens binary vector. The transgenic lines were subsequently analysed for the presence and expression of the transgene. The CP cDNA copy number was determined for kanamycin resistant plants. Three selected transgenic lines and their S1 progeny resulting from tuber germination showed a high protection level against the virus. These data appear to support the hypothesis that the virus resistance is mediated by the translated viral coat protein expressed in transgenic potato lines.