Archive image from page 24 of The cytoplasm of the plant. The cytoplasm of the plant cell cytoplasmofplant00guil Year: 1941 Chapter III â9â Physical Properties Viscosity:- There has been a good deal of discussion concerning the cohesive state of cytoplasm, , its consistency. Most cytolo- gists consider that the cytoplasm more nearly approaches a liquid than a solid state. A few, however, believe it to be of a solid consistency. The Plasmodium of the Myxomycetes is very fluid. A proof of this is in an experiment carried out on Badhamia utricularis by the English mycologist, Lister. Lister
Archive image from page 24 of The cytoplasm of the plant. The cytoplasm of the plant cell cytoplasmofplant00guil Year: 1941 Chapter III â9â Physical Properties Viscosity:- There has been a good deal of discussion concerning the cohesive state of cytoplasm, , its consistency. Most cytolo- gists consider that the cytoplasm more nearly approaches a liquid than a solid state. A few, however, believe it to be of a solid consistency. The Plasmodium of the Myxomycetes is very fluid. A proof of this is in an experiment carried out on Badhamia utricularis by the English mycologist, Lister. Lister noticed Plasmodia of this fungus on the trunk of an old hornbeam growing in his garden. The trunk was covered over with the fruiting bodies of Corticium puteanum. The Plasmodia of Badhamia moved around on the sur- face occupied by Corticium, actually consuming the fruiting bodies and after their passage leaving the bark of the hornbeam as smooth and clean as if no fungus had ever grown there. But, although Badhamia assimilated the Corticium tissues, its spores, protected by a resistant brown membrane, were not attacked and accumulated within the Plasmodium which took on a dark brown color. Lis- ter collected one of these Plas- modia on a glass plate, where it moved about, leaving behind it as evidence of its passage, a fine brown network, formed of the ingested spores. These had been progressively dropped, being poorly retained in the plasmodial cytoplasm. This demonstrates its weak viscosity. The plasmo- dium, however, still enclosed fig. 4. - Two successive shapes, a. b, many spores. Lister then put in y the Plasmodium of a Myxomycete â¢1 ,1 1 . « , â . as it moves in the direction of the arrow. Its path a barrier of wet cotton. The Plasmodium passed through rapidly, leaving in the cotton all the remaining spores, and emerged showing the yellow tint characteris- tic of it before it had taken up the fungus Corticium. Lister thus brought about the filtration through c
Size: 1604px × 1247px
Photo credit: © Bookive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1900, 1940, 1941, americana, archive, atkinson_lenette_may_rogers_1899_, biodiversity, blc, book, bookauthor, bookcentury, bookcollection, bookcontributor, bookdecade, bookpublisher, booksubject, bookyear, drawing, guilliermond_alexandre_1876_, historical, history, illustration, image, mblwhoi, mblwhoi_library, page, picture, plant_cells_and_tissues, print, protoplasm, reference, vintage, waltham_mass_chronica_botanica_company
