Kiene A.R.,Institute of Botany of Nature Research Center
Archives of Natural History | Year: 2013
Jean-Emmanuel Gilibert (1741-1814) was a French botanist, physician, and politician who lived in the Polish-Lithuanian Commonwealth between 1775 and 1783, where he organized studies on medicine and natural sciences. During this time, he collected local plants, and in 1781-1782, published a two-volume compendium: Flora Litvanica inchoata. One hundred copies of the first volume and an unknown number of the second volume were issued. In 1925, Polish botanist Slawinski noted five libraries holding copies of Flora Litvanica. The current census shows at least 18 European libraries holding original copies of the book. © The Society for the History of Natural History.
Karpaviciene B.,Institute of Botany of Nature Research Center
Biologia | Year: 2012
Morphological, reproductive and karyological variability were investigated in fifteen populations of Allium oleraceum transferred from natural populations in Lithuania to the field collection of medicinal and aromatic plants of the Institute of Botany of the Nature Research Centre in Vilnius. Nine populations were tetraploid (2n = 4x = 32), four pentaploid (2n = 5x = 40) and two consisted of both cytotypes. The greatest differences among the populations and between the ploidy levels were observed in stem height and mass of aerial bulbils per plant. The seed production was very low and did not differ significantly between the ploidy levels, while neither tetraploids nor pentaploids did produce any seed if insects were prevented from visiting their flowers. The means of the morphological characters were higher in pentaploids than in tetraploids. However, none of them provided the possibility of determining ploidy level without chromosome counting. © 2012 Versita Warsaw and Springer-Verlag Wien.
Loziene K.,Institute of Botany of Nature Research Center |
Venskutonis R.R.,Kaunas University of Technology
Journal of Essential Oil Research | Year: 2010
Seventeen samples of the interspecific hybrid of thyme, Thymus x oblongifolius Opiz, were collected from thirteen different habitats in Lithuania. The composition of their essential oils was analyzed by capillary gas chromatography (GC) and mass spectrometry (MS). Eight chemotypes were defined, namely l-octen-3-ol, (Z)-β-ocimene, geraniol, myrcene, 1,8-cineole, α-terpinyl acetate, germacrene B and geraniol/germacreneB. The composition of the hybrid oil can be characterized as intermediate comparing to its parental species, T. serpyttum L. and T. pulegioides L., according to the percentages of thymol, carvacrol, 1,8-cineole, germacrene B, geraniol and (Z)-β-ocimene. Three samples of the investigated T x oblongifolius were moved from natural habitats into the experimental field collection and cloned annually in the ground under the same environmental conditions. Oil composition of these three samples was monitored in the fourth clonal offspring generation and compared with the oil composition of their parent plants from natural habitats. The results obtained by cloning showed that the composition of essential oil of the interspecific hybrid T. x oblongifolius is quite stable, most likely predetermined genetically. © 2010 Allured Business Media.
Cizeikiene D.,Kaunas University of Technology |
Juodeikiene G.,Kaunas University of Technology |
Paskevicius A.,Institute of Botany of Nature Research Center |
Bartkiene E.,Lithuanian University of Health Sciences
Food Control | Year: 2013
The evaluation of antimicrobial activities of Lactobacillus sakei KTU05-6, Pediococcus acidilactici KTU05-7, Pediococcus pentosaceus KTU05-8, KTU05-9 and KTU05-10 strains producing organic acids and bacteriocins like inhibitory substances (BLIS) against undesirable microorganisms in the food industry, were performed using an agar well diffusion assay method. The metabolites of lactic acid bacteria (LAB) inhibited the growth of pathogenic bacteria, belonging to Bacillus, Pseudomonas, Listeria and Escherichia genera in various degrees. The organic acids and BLIS of LAB show fungicidal and fungistatic activities against fungi and yeast such as Fusarium culmorum, Penicillium chrysogenum, Aspergillus fumigatus, Aspergillus versicolor, Penicillium expansum, Aspergillus niger, Debaryomyces hansenii and Candida parapsilosis. 20% of P. pentosaceus KTU05-9 sourdough in a bread recipe suppressed the bread ropiness in artificially contaminated bread by Bacillus subtilis spores, until 6 days storage at 23 °C. Moreover P. acidilactici KTU05-7, P. pentosaceus KTU05-8 and KTU05-10 single cell suspension sprayed on the bread surface, inhibited growing of fungi until 8 days of storage in polythene bags. The presence of BLIS and organic acids by tested LAB is an indication that these bacteria can be used widely in the food industry as bio-preservatives due to their broad inhibition spectrum. © 2012 Elsevier Ltd.
Druteikiene R.,Lithuanian Academy of Sciences |
Luksiene B.,Lithuanian Academy of Sciences |
Peciulyte D.,Institute of Botany of Nature Research Center |
Baltrunas D.,Lithuanian Academy of Sciences
Journal of Radioanalytical and Nuclear Chemistry | Year: 2010
The aim of this study was to investigate the change of Pu oxidation states due to interaction with aerobic bacteria and fungi at low pH under laboratory conditions. Microorganisms were isolated from samples collected from the low-level radioactive waste repository within the confines of Ignalina NPP. Abilities of the fungi (Absidia spinosa var spinosa Lendn. and Paecilomyces lilacinus Thom Samson) as well as Gram-positive bacteria (Bacillus mycoides and Micrococcus luteus) and Gram-negative bacterium I-m1 to transform the oxidation states of Pu under aerobic conditions were investigated. Oxidized and reduced Pu was tested using two radiochemical procedures. The amount of reduced and oxidized Pu was determined by measuring alpha activity after radiochemical separation. The results have shown that all bacteria and fungi can very slightly alter oxidation states of Pu due to their microbial activity. All the microorganisms tested demonstrate quite a fast process of Pu biosorption under the experimental conditions. © 2010 Akadémiai Kiadó, Budapest, Hungary.