Germination and germ tube development of Puccinia coronata uredospores

1956 ◽  
Author(s):  
Harold Melvin Couey
Keyword(s):  
Germ Tube ◽  
Puccinia Coronata

scholarly journals Effect of cations on germination & germ tube development of Puccinia coronata uredospores

1961 ◽  
Vol 36 (1) ◽  
pp. 14-19 ◽  
Author(s):  
H. Melvin Couey ◽  
Frederick G. Smith
Keyword(s):  
Germ Tube ◽  
Puccinia Coronata

The effect of some chemical materials against virulence factors of Candida ssp isolated from UTI patients

2018 ◽  
Vol 9 (SPL1) ◽  
Author(s):  
Fatima Abdul Hussein Mejbel
Keyword(s):  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Virulence Factors ◽  
Biofilm Formation ◽  
Germ Tube ◽  
Laboratory Culture ◽  
Candida Spp ◽  
Other Substances ◽  
Chemical Materials

 During the period from September 2016 to December 2017,135 urine samples were collected from urinary tract infection patients attending to AL-Zahraa Hospital in AL-Najaf Governorate. The present study was conducted to isolate and identify Candida spp. isolated from urinary tract infection patients by different methods including direct examination, laboratory culture, biochemical test and by modern techniques (Api Candida kit) and determine the virulence factors phenotypic to Candida spp which involved (biofilm formation,phospholipase and germ tube). The percentage of females to males was as following, female (84) 62.2 % (21) infected and male (51) 37.8% (1) infected with all age categories. The results in this study are explain that is some Candida spp. such as C. albicans, have high susceptible to eugenole follow by phenol and umbellulone. The efficiency of some chemical substances such as (eugenole,umbellulone, and phenol) was evaluated to inhibit the growth of Candida ssp as well as some virulence factors such as biofilm formation,germ tube and phospholipase,which were studied in this research. Statistically analysis results have been significance difference between the results of the substance concentrations and the concentrations of the different other substances.

Comparison of the Murex, Candida albicans CA50 test with germ tube production for identification of C. albicans

1996 ◽  
Vol 24 (1) ◽  
pp. 31-35 ◽  
Author(s):  
JoAnn P. Fenn ◽  
Helene Segal ◽  
Lisa Blevins ◽  
Shawn Fawson ◽  
Patty Newcomb-Gayman ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Germ Tube ◽  
Tube Production

Encystment and germination of the parasitic chytrid Rozella allomycis on host hyphae

1973 ◽  
Vol 51 (10) ◽  
pp. 1825-1835 ◽  
Author(s):  
Abraham A. Held
Keyword(s):  
Cyst Wall ◽  
Germ Tube ◽  
Light And Electron Microscopy ◽  
Multivesicular Bodies ◽  
Cell Periphery ◽  
General Sequence ◽  
Obligate Intracellular ◽  
Host Cytoplasm ◽  
Intracellular Parasites ◽  
Three Stages

Zoospores of the obligately parasitic chytrid Rozella allomycis which settle upon hyphae of the water mold host, Allomyces arbuscula, encyst and germinate before their protoplasts penetrate into the host cytoplasm. This process has been examined by light and electron microscopy. Three stages which follow the attachment to the host and the retraction of the zoospore's flagellum are described: (1) the early cyst lacks a wall; it is discoid, and its shape is maintained by the coil of the retracted axoneme which forms its rim; (2) a cyst wall is formed while multivesicular bodies occur at the cell periphery and eventually disappear; a germ tube starts to grow at the point of attachment; and (3) the firm-walled cyst is spheroidal; it has a fully developed germ tube with a specialized class of vesicles; it also forms a distal, flattened vacuole whose swelling eventually injects the Rozella protoplast into the host; at this stage the retracted axoneme has disappeared and the cell's organelles have undergone extensive changes. Electron-dense, "gamma-like" granules enclosed in vacuoles may play a major role in the formation of both the cyst wall and the distal vacuole. These granules appear to give rise to small vesicles, and thus to multivesicular bodies; the distal vacuole appears to form by coalescense of gamma-like vacuoles.The general sequence of encystment and germination resembles that found in other Chytridiomycetes, both saprophytic and parasitic. However, the distal vacuole and the vesicles in the germ tube appear to be parasitic adaptations and are shared by obligate intracellular parasites from several unrelated groups of zoosporic fungi.

Sign in / Sign up

Export Citation Format

Share Document