Phylogenetic analysis of pandemic influenza A/H1N1 virusBiologia - Tập 67 - Trang 14-31 - 2012
Ramaiah Arunachalam, Kanniah Paulkumar, Gurusamy Annadurai
The principle of the present study was to determine the evolution of pandemic novel influenza A/H1N1 2009 virus (NIV) by phylogenetic, comparative and statistical analyses. The phylogenetic trees of eight genomic segments illustrate that, so far, the sequences of the NIVs (outbreak group A) are relatively homogeneous and derived by the event of multiple genetic reassortment of Eurasian and North A...... hiện toàn bộ
Scaffolds from biomaterials: advantages and limitations in bone and tissue engineeringBiologia - Tập 71 - Trang 353-366 - 2016
Franca N. Alaribe, Sello L. Manoto, Shirley C. K. M. Motaung
Nowadays, there has been immense progress in developing materials to support transplanted cells. Nevertheless, the complexity of tissues is far beyond what is found in the most advanced scaffolds. This article reviews the types of biomaterials and their resulting scaffolds in the bio-engineering of bone and tissues by presenting an overview of the characteristics of ideal scaffold in tissue engine...... hiện toàn bộ
Community composition and cold tolerance of soil Collembola in a collapse karst doline with strong microclimate inversionBiologia - Tập 70 - Trang 802-811 - 2015
Natália Raschmanová, Dana Miklisová, Ľubomír Kováč, Vladimír Šustr
The study compared communities of soil Collembola along the inversed microclimatic gradient of the collapse doline of the Silická ľadnica Ice Cave (Slovakia) in spring and autumn of 2005. Kruskal-Wallis ANOVA and the Mann- Whitney test revealed significant differences in abundance between sites and both seasons. Significantly higher abundance means and species richness were observed at most sites ...... hiện toàn bộ
Morphometric aspects and growth modeling of exotic bivalve blood cockle Scapharca inaequivalvis from the Black Sea, TurkeyBiologia - Tập 69 - Trang 1707-1715 - 2015
Mehmet Aydin, Uğur Karadurmuş, Evren Tunca
This study was planned to determine biometric features and relationships between them in blood cockle, Scapharca inaequivalvis, a benthic exotic bivalve species of the Black Sea, Turkey during a period of 12 months. Over the study, 4,543 samples were collected and their shell length (SL), width (SWi), thickness (ST) and weight (SWe), as well as total (TW) and meat weights (MW) were measured. SL ch...... hiện toàn bộ
Analyses of sexual reproductive traits in Dactylorhiza majalis: a case study from East GermanyBiologia - Tập 75 - Trang 507-521 - 2020
Roland Schubert, Markus Brugger, Samantha Kühnel, Heike Hohlfeld, Christa Maria Heidger
The orchid species Dactylorhiza majalis is endangered by continuing habitat destruction and fragmentation. This requires more detailed information with respect to its sexual reproduction, which is especially relevant for Germany, where from 10 % to 30 % of the world-wide remaining populations grow. In the present study, we determined both the numbers of growing and flowering individuals per stand ...... hiện toàn bộ
Pollen and seed morphology of the genus Cistanche (Orobanchaceae) in IranBiologia - Tập 65 - Trang 615-620 - 2010
Robabeh Shahi Shavvon, Shahryar Saeidi Mehrvarz
The pollen grains and seeds in six species of Cistanche distributed in Iran were examined. Detailed morphological descriptions of pollen and seed are given for each species. Four microsculpturing patterns are recognized on pollen surface among the species studied: microhammulate, microscabrate, microornate and microgemmate. The seed coat sculpturing among the studied species is constantly alveolat...... hiện toàn bộ
Morpho-histological study on shoot bud regeneration in cotyledon cultures of pepper (Capsicum annuum)Biologia - Tập 62 - Trang 704-710 - 2007
Najla Mezghani, Ahmed Jemmali, Nedhra Elloumi, Radhia Gargouri-Bouzid, Spiros Kintzios
Adventitious organogenetic structures were produced in vitro using cotyledon explants excised from 14 day-old pepper seedlings. The best response was observed on MS medium containing 5.7 μM indole-3-acetic acid and 8.8 μM 6-benzylaminopurine. However, when transferred onto elongation medium (MS + 2.8 μM gibberellic acid), these structures frequently developed into leaf-like features rather than in...... hiện toàn bộ