Canadian Science Publishing

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Biosynthesis of 3-acetyldeoxynivalenol and other metabolites by Fusarium culmorum HLX 1503 in a stirred jar fermentor
Canadian Science Publishing - Tập 64 Số 1 - Trang 1-5 - 1986
J. David Miller, Barbara A. Blackwell
The formation of 3-acetyldeoxynivalenol (ADON) and other secondary metabolites of Fusarium culmorum in a stirred jar fermentor is described in relation to changes in concentrations of sugars, N, P, and O2, and in pH in the medium as well as changes in cellular parameters. The addition of sodium [1-13C]acetate to the fermentation demonstrated that ...... hiện toàn bộ
The supposed fern Onychiopsis psilotoides from the English Wealden (Lower Cretaceous) reinterpreted as a lycopod
Canadian Science Publishing - Tập 64 Số 7 - Trang 1453-1466 - 1986
Judith E. Skog
Specimens that had been previously considered to represent a fertile fern, Onychiopsis psilotoides (Stokes et Webb) Ward from the English Wealden, have been restudied and are here considered to represent a new genus (Tanydorus) in a new family within the Lycopodiales. Evidence for this new classification of the material includes the combination of a spiral (helical) arrangement of the lea...... hiện toàn bộ
Comparisons between the metal content of a transplanted lichen before and after the start-up of a coal-fired power station in Israel
Canadian Science Publishing - Tập 66 Số 4 - Trang 668-671 - 1988
Jacob Garty
The lichen Ramalina duriaei (De Not.) Bagl. was transplanted to 10 biomonitoring sites during the period December 1981 – December 1982. The amounts of Ni, Cr, Cu, Zn, and Pb in the lichen material were measured at the beginning and at the end of the exposure period. These data were compared with the metal amounts detected in R. duriaei transplanted to the same stations during the period F...... hiện toàn bộ
Histochemistry of lignin and suberin deposition in boundary layers formed after wounding in various plant species and organs
Canadian Science Publishing - Tập 65 Số 9 - Trang 1886-1892 - 1987
P. A. Rittinger, Alan R. Biggs, David R. Peirson
Wound responses in a variety of injured plant tissues were assessed using conventional lignin tests and fluorescence techniques for suberin detection in tissues present at the time of wounding. The tissue assessed included twigs of four conifer species, barley and cherry foliage, fern rachis, potato tuber, carrot root, musksmelon cotyledons, and cucumber hypocotyl. Apple leaves infected b...... hiện toàn bộ
Differentiation and cell wall degrading enzymes in the obligately biotrophic rust fungus Uromyces viciae-fabae
Canadian Science Publishing - Tập 73 Số S1 - Trang 624-631 - 1995
H. B. Deising, Martina Rauscher, Marc Haug, Stefan Heiler
Rust fungi differentiate a series of complex infection structures to infect their host plants. Artificial membranes providing a signal for the induction of infection structure differentiation have been used to study events taking place during early stages of host–pathogen interaction. During the prepenetration phase, serine esterases, one of which shows cutinase activity, appear to be imp...... hiện toàn bộ
Host-parasite relationships in bean cultivars of varying susceptibility to bean rust
Canadian Science Publishing - Tập 77 Số 11 - Trang 1551-1559 - 1999
Michael W. Harding, Jean C. Stutz, Robert W. Roberson
Ultrastructural and functional similarity of the haustorial neckband of rust fungi and the Casparian strip of vascular plants
Canadian Science Publishing - Tập 54 Số 21 - Trang 2484-2489 - 1976
Michèle C. Heath
In susceptible hosts infected with rust fungi, an osmiophilic band, bridging the interface between host and parasite, is usually observed about midway along the haustorial neck. This neckband bears certain ultrastructural resemblances to the Casparian strip of endodermal cells, and the possible similarity in function as a barrier to apoplastic transport was investigated using 4-acetamido,...... hiện toàn bộ
Somatic embryogenesis in conifers
Canadian Science Publishing - Tập 69 Số 9 - Trang 1873-1899 - 1991
T. E. Tautorus, Larry C. Fowke, David I. Dunstan
Substantial progress has been made towards the development of systems for in vitro embryogenesis in conifers. Since the first report of somatic embryogenesis from zygotic embryos of Picea abies in 1985, cultured explants of at least 18 different coniferous species have been induced to produce somatic embryos. Somatic embryos have been cryopreserved, grown in liquid suspensions, and mature...... hiện toàn bộ
The effect of lignin and nitrogen on the decomposition of litter in nutrient-poor ecosystems: a theoretical approach
Canadian Science Publishing - Tập 65 Số 6 - Trang 1116-1120 - 1987
Frank Berendse, Björn Berg, Ernesto Bosatta
A model is developed to study the dynamics of carbon and nitrogen in decomposing substrates that contain different organic compounds: (i) lignin, (ii) carbohydrates "masked" by lignin compounds, and (iii) free carbohydrates. Under conditions both of carbon limitation and of nitrogen limitation the model predicts a negative linear relationship between lignin concentration and rate of mass ...... hiện toàn bộ
An evaluation of Fusarium oxysporum from crucifers based on pathogenicity, isozyme polymorphism, vegetative compatibility, and geographic origin
Canadian Science Publishing - Tập 65 Số 10 - Trang 2067-2073 - 1987
Paul W. Bosland, Paul H. Williams
A global collection of 123 putative isolates of Fusarium oxysporum from crucifers was examined for pathogenicity, isozyme polymorphism, and vegetative compatibility. Of these isolates, 103 were found to be pathogenic on one or more of six differential crucifer cultivars. Three patterns of isozyme polymorphism (electrophoretic types) were found and by means of a nitrate reductase complemen...... hiện toàn bộ
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