The Golgi apparatus of plant cells is engaged in both the processing of glycoproteins and the synthesis of complex polysaccharides. To investigate the compartmentalization of these functions within individual Golgi stacks, we have analyzed the ultrastructure and the immunolabeling patterns of high-pressure frozen and freeze-substituted suspension-cultured sycamore maple (Acer pseudoplatanus L.)...

Periphyton succession was studied over 89 d in longitudinally adjacent reaches (a riffle and run) in Sycamore Creek, a spatially intermittent desert stream. Effects of nitrogen limitation were assessed by comparing algal development on clay saucers containing either nitrate-enriched or unenriched agar. We evaluated effects of grazing on periphyton accrual by amending agar in half the substrata ...

Abstract Pyrenochaeta fraxinina was first described in 1913 from the state of New York (USA) on petioles Fraxinus sp. Since then, species has not been reported North America and reports other regions world are very sparse. The results this study P . based material collected various Poland 2012 to 2019. comprised 2700 previous year’s leaf excelsior 1970 or residues eight deciduous tree species. ...