scholarly journals Diurnal and nocturnal pollination of Silene alba (Caryophyllaceae)

2002 ◽  
Vol 89 (3) ◽  
pp. 433-440 ◽  
Author(s):  
H. J. Young
Keyword(s):  
Silene Alba

Ultrastructural characteristics of sporidia of Ustilago

1989 ◽  
Vol 47 ◽  
pp. 786-787
Author(s):  
Patricia N. Hackney
Keyword(s):  
Electron Microscope ◽  
Type System ◽  
Tube Formation ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
University Of Wisconsin ◽  
Transmission Electron ◽  
Ustilago Hordei ◽  
Silene Alba ◽  
The University

Ustilago hordei and Ustilago violacea are yeast-like basidiomycete pathogens ofHordeum vulgare and Silene alba respectively. The mating type system in both species of Ustilago is bipolar, with alleles, A,a, (U.hordei) and a1, a2 (U.violacea) at a single locus. Haploid sporidia maintain the asexual phase by budding, while the sexual phase is initiated by conjugation tube formation between the mating types during budding and conjugation.For observation of budding, sporidia were prepared by culturing the four types on YEG (yeast extract glucose) broth for 24 hours. After centrifugation at 5000g cells were either left unmated or mated in a1/a2,A/a combinations. The sporidia were then mixed 1:1 with 4% agar and the resulting 1mm cubes fixed in 8% gluteraldehyde and post fixed in osmium tetroxide. After dehydration and embedding cubes were thin sectioned with a LKB ultratome and photographed in a Zeiss 9s transmission electron microscope or in an AE1 electron microscope of MK11 1MEV at the High Voltage Electron Microscopy Center of the University of Wisconsin-Madison.

The 2″-O-glucosylation of vitexin and isovitexin in petals of Silene alba is catalysed by two different enzymes

1980 ◽  
Vol 19 (9) ◽  
pp. 1935-1937 ◽  
Author(s):  
Ria Heinsbroek ◽  
Jan Van Brederode ◽  
Gerrit Van Nigtevecht ◽  
Jan Maas ◽  
John Kamsteeg ◽  
...  
Keyword(s):  
Silene Alba

The pH dependent substrate specificity of udp-glucose: isovitexin 2″-O-glucosyltransferase in Silene alba

1979 ◽  
Vol 18 (4) ◽  
pp. 655-656 ◽  
Author(s):  
Jan van Brederode ◽  
Jean Chopin ◽  
John Kamsteeg ◽  
Gerrit van Nigtevecht ◽  
Ria Heinsbroek
Keyword(s):  
Substrate Specificity ◽  
Silene Alba ◽  
Ph Dependent

THE BIOLOGY OF CANADIAN WEEDS.: 25. Silene alba (Miller) E. H. L. Krause

1977 ◽  
Vol 57 (4) ◽  
pp. 1103-1114 ◽  
Author(s):  
J. McNEILL
Keyword(s):  
Weed Species ◽  
Forage Crops ◽  
Silene Alba ◽  
Melandrium Album ◽  
Agricultural Areas

A review is provided of information on the biology of Silene alba (Lychnis alba, Melandrium album), a weed species introduced from Eurasia, which occurs across the agricultural areas of Canada. A serious weed, especially of leguminous forage crops, white cockle is resistant to common herbicides such as 2,4-D and 2,4,5-T.

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