The term cellular immune response refers to haemocyte-mediated responses, including phagocytosis, nodulation, and encapsulation. In the present study, we identified five types of circulating haemocytes in larvae of the haemolymph of the Asian corn borer, Ostrinia furnacalis (Guenée), including granulocytes, oenocytoids, plasmatocytes, prohaemocytes, and spherulocytes. The relative number of total free haemocytes per larva decreased significantly 0.5, 24, and 36 h after the injection of Beauveria bassiana conidia. Upon conidia challenge, both phagocytosis and nodulation were observed in the collected haemolymph from O. furnacalis larvae. In addition, plasma was found to be necessary for both phagocytosis and nodulation. Therefore, we here confirm that phagocytosis and nodulation are involved in O. funacalis larvae during their fight against infection by B. bassiana, and further, that the cellular immune response of O. furnacalis helps eliminate the invading organisms despite the fact that not all the fungal conidia are killed., Dongxu Shen, Miao Li, Yuan Chu, Minglin Lang, Chunju An., and Obsahuje bibliografii
V článku je zdůrazněn rozhodující význam školy moderní fyziologie rostlin založené Juliem Sachsem, který byl uveden do experimentálních metod fyziologie Janem Evangelistou Purkyněm jako jeho asistent v Praze. Dále jsou krátce charakterizováni nejdůležitější Sachsovi žáci z jeho rozhodujícího období působení na univerzitě ve Würzburgu a je zdůrazněno trvající působení Sachsových myšlenek až do současného období studia biologie rostlin., The decisive importance of the school of modern plant physiology established by Julius Sachs, who was introduced to the experimental methods of physiology by Jan Evangelista Purkyně as his assistant in Prague, is underscored in this article. The most important disciples of Julius Sachs as a professor in Würzburg are portrayed and the lasting influence of Sachs´s ideas on plant biology is described., Dieter Volkmann., and 5 il.
The research activities of this Centre are focused on the study of cyanobacteria, algae and symbiotic soil microorganisms (bacteria and algae), which are used for bioindicatoin and revitalization of toxic anthropogenic substrates and water resources. The targeted outcomes are methods for predicting cyanobacteria in drinking wter and water resources, technology of biogas production from algal biomass and the use of algal biomass for the pharmaceutical industry and biotechnology of microbial inoculations for more effective recultivation of brown-coal spoil banks. The research Centre is divided into three research groups each dealing with a portion of the research task: Group 1 - Cyanobacteria and their toxins in the waterworks industry; Group 2 - Use of algae for bioindication and revitalization of polluted water and biomass use; Group 3 - Use of microbial inoculations for soil revitalization. and Miroslav Vosátka, Jana Albrechtová.
V úterý 29. dubna 2015 se v reprezentačních prostorách Akademie věd České republiky, v pražské vile Lanna konalo slavnostní vyhlášení cen Živy za nejlepší články uplynulého ročníku, které uděluje redakční rada a redakce časopisu., The selected best contributions to Živa in 2014 and three eminent personalities of the journal were awarded special prizes., and Jana Šrotová, Andrej Funk, Lucie Krouzová.
Ve středu 11. května 2016 se v reprezentačních prostorách Akademie věd České republiky, v pražské vile Lanna konalo slavnostní vyhlášení cen Živy za nejlepší články uplynulého ročníku, které uděluje redakční rada a redakce časopisu., The selected best contributions to Živa in 2015 and two eminent personalities connected with the journal were awarded special prizes., and Redakce.
A new myxozoan, Ceratomyxa bohari sp. n., infecting the gall bladder of two-spot red snapper, Lutjanus bohar Forsskål, in the Red Sea off Saudi Arabia, is described using light microscopy and characterised genetically. The infection was recorded as mature spores floating free in the bile. The overall prevalence of infection of the type host was 19% (67 fish infected of 360 examined), with the highest prevalence in autumn (31%; 28/90) and the lowest in winter at 12% (11/90). Mature spores are slender and slightly crescent-shaped in the frontal view, with anterior and posterior margins tapered gradually to rounded valvular tips. Spore valves are unequal with a prominent sutural line. The spore dimensions are 3-4 μm (mean 3.5 μm) in length and 16-19 μm (mean 17 μm) in thickness. Two polar capsules are spherical, equal in size, 1.5 μm in diameter. Coils of the polar filament are indiscernible. The sporoplasm is binucleated and fills nearly one third of the extracapsular space restricted to the area below the capsules. The molecular analysis based on the small subunit rDNA (SSU rDNA) sequence revealed a close relationship with majority of species of Ceratomyxa Thélohan, 1892 and phylogenetic clustering with species from different geographical location. Thus, the shorter spore of the present Ceratomyxa species and the divergence of the SSU rDNA sequences were the distinctive features that separate it from all previously described species and identified this parasite as a new species of Ceratomyxa., Lamjed Mansour, Abdel-Azeem S. Abdel-Baki, Ahmad F. Tamihi, Saleh Al-Quraishy., and Obsahuje bibliografii