Surface structure of germinating Uromyces dianthi urediospores as observed by scanning electron microscope

1971 ◽  
Vol 49 (12) ◽  
pp. 2243-2244 ◽  
Author(s):  
D. R. Jones
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Structure ◽  
Germ Tube ◽  
Spore Wall ◽  
Spore Surface ◽  
Germ Pore ◽  
Tube Emergence ◽  
Scanning Electron

Germ pore regions could not be located on the surface of Uromyces dianthi urediospores before germination. Germ tube emergence did not split the spore wall. Double spine features were observed on the spore surface.

Surface structure of the conidium and conidiophore of Stemphylium botryosum

1973 ◽  
Vol 19 (3) ◽  
pp. 392-393 ◽  
Author(s):  
Michael Corlett
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Structure ◽  
Stemphylium Botryosum ◽  
Scanning Electron

Observations with the scanning electron microscope reveal tuberculate prominences up to 0.75 to 1.0 μ high and 0.5 μ wide on the suface of the conidium. The prominences are 1.0 to 1.5 μ apart and in the mature conidia have flattened cap-like tops. The swollen tips of the conidiophores are finely warted.

Spore surface morphology of pine stem rusts of Canada as observed under a scanning electron microscope

1971 ◽  
Vol 49 (3) ◽  
pp. 371-372 ◽  
Author(s):  
Y. Hiratsuka
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Morphology ◽  
Spore Surface ◽  
Endocronartium Harknessii ◽  
Scanning Electron ◽  
Shape And Size

Two types of surface markings on the aeciospores of five pine stem rusts occurring in Canada were observed under a scanning electron microscope. Spores of four species, Endocronartium harknessii (J. P. Moore) Y. Hiratsuka (= Peridermium harknessii J. P. Moore), Cronartium coleosporioides Arth. (= P. stalactiforme Arth. & Kern), C. comptoniae Arth., and C. ribicola J. C. Fisch., had annulated processes with five to seven layers and each spore had a smooth area. The smooth area was at the same level as the top layer of the processes. Each species could be distinguished by the shape and size of its processes. Spores of Cronartium comandrae Pk. had no smooth areas and had obtuse or cuspidate processes with no annulations. Different ontogenies were apparent for the two types of spore surface markings.

Surface structure of dermatophytes as seen by the scanning electron microscope

1969 ◽  
Vol 7 (3) ◽  
pp. 270-272 ◽  
Author(s):  
Y. Ito ◽  
Y. Nozawa ◽  
H. Suzuki ◽  
T. Setoguti
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Structure ◽  
Scanning Electron

Emergence of the aeciospore germ tubes of Cronartium coleosporioides (=Peridermium stalactiforme) as observed by scanning electron microscope

1970 ◽  
Vol 48 (9) ◽  
pp. 1692-1692 ◽  
Author(s):  
Y. Hiratsuka
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Germ Tube ◽  
Germ Tubes ◽  
Scanning Electron

Germ tubes of Cronartium coleosporioides Arth. (= Peridermium stalactiforme Arth. and Kern) emerged between processes through short irregular slits. Germ tube walls were folded when they emerged and expanded after the emergence.

Scanning electron microscope observations on resting sporangia of Plasmodiophora brassicae in clubroot tissues after alcohol cracking

1979 ◽  
Vol 57 (22) ◽  
pp. 2528-2532 ◽  
Author(s):  
Yosio Yukawa ◽  
Shuhei Tanaka
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Thin Layer ◽  
Brassica Rapa ◽  
Plasmodiophora Brassicae ◽  
Ion Etching ◽  
Freeze Fracturing ◽  
Germ Pore ◽  
Tem Microscopy ◽  
Scanning Electron

Clubroot galls taken from 40-day-old Brassica rapa L. var. glabra Kitamura, grown in soil infested with Plasmodiophora brassicae Wor. were examined by scanning (SEM) and transmission (TEM) microscopy. SEM materials were prepared by freeze fracturing followed by ion etching. A thin layer enveloped the mass of sporangia which in etched specimens appeared to be embedded in a fibrillar net deposited among the sporangia. Both SEM and TEM micrographs revealed a circular germ pore (ca. 1 μm in diameter) with a thickened plug-like region in the pore orifice. The wall of the mature resting sporangium consisted of three layers W1, W2, and W3.

The Micro-Structure, Distribution and Possible Function of Peg-Like Setae in Male Coleoptera

1972 ◽  
Vol 3 (1) ◽  
pp. 40-54 ◽  
Author(s):  
P.M. Hammond
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Structure ◽  
Micro Structure ◽  
Scanning Electron

AbstractThe shape and surface structure of peg-like setae occurring in certain male Staphylinidae and other Coleoptera are described with the aid of a scanning electron microscope. The sites at which these organs are known to occur and the taxa in which they have been found are listed. Their possible function is discussed.

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