The Mycorrhizae of Juniperus osteosperma: Identity of the Vesicular-Arbuscular Mycorrhizal Symbiont, and Resynthesis of VA Mycorrhizae

Mycologia ◽  
1986 ◽  
Vol 78 (1) ◽  
pp. 108 ◽  
Author(s):  
Robert J. Reinsvold ◽  
F. Brent Reeves
Keyword(s):  
Arbuscular Mycorrhizal ◽  
Va Mycorrhizae ◽  
Juniperus Osteosperma ◽  
Vesicular Arbuscular

Effects of surface amendation of two mine spoils in Alberta, Canada, on vesicular–arbuscular mycorrhizal development of slender wheatgrass: a 4-year study

1983 ◽  
Vol 61 (3) ◽  
pp. 798-803 ◽  
Author(s):  
John C. Zak ◽  
Dennis Parkinson
Keyword(s):  
Oil Sands ◽  
Arbuscular Mycorrhizal ◽  
The Other ◽  
Mine Spoil ◽  
Long Term Effects ◽  
Va Mycorrhizae ◽  
Mine Spoils ◽  
Mycorrhizal Root ◽  
Initial Application ◽  
Vesicular Arbuscular

The effects of amendation of two mine spoils (oil sands tailings and a subalpine coal mine spoil) on the development of vesicular–arbuscular (VA) mycorrhizae with Agropyron trachycaulum were examined over 4 years. Each spoil was either amended with peat, fertilizer, or sewage sludge or left unamended. Plants were sampled in late August of the second and fourth growing season and the level of infection expressed as length of mycorrhizal root per 10 cm3 of spoil. Plants on the peat-amended oil sands spoil, as compared with the other treatments, had the highest rates of infection. Infection levels increased in the fertilized plots over the 4 years. Mycorrhizae were not detected in the sewage-amended plots until the 4th year. Infection levels from the amended subalpine spoil did not change significantly between the 2nd and 4th year. Mycorrhizal root lengths were highest in the peat-amended spoil as compared with the control and sewage-treated plots. Rates of infection in the fertilized spoil were not significantly different from the other treatments. The initial application of an amendment to a mine spoil may have significant long-term effects on the development of VA mycorrhizae and the success of a revegetation program. Changes in the mycorrhizal status of plants on these habitats may occur only slowly with time.

Occurrence of Vesicular-Arbuscular Mycorrhizal Fungi in Alberta, Canada

1993 ◽  
Vol 48 (11-12) ◽  
pp. 923-929 ◽  
Author(s):  
S. M. Boyetchko ◽  
J. P. Tewari
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Fungal Species ◽  
Glomus Aggregatum ◽  
X Ray ◽  
Vesicular Arbuscular ◽  
Spore Walls ◽  
Scanning Electron

Abstract Three V A mycorrhizal fungal species were isolated from soils in Alberta, Canada and examined by scanning electron microscopy and energy-dispersive X-ray microanalysis. Mature spores of Glomus aggregatum developed an outer hyaline wall which contained lower levels of calcium than the middle wall. Examination of G. pansihalos spores revealed a lower level of calcium in the outer evanescent wall as compared to the ornamented wall. When spores of Entrophospora infrequens were examined, the wall of the vesicle was found to contain similar levels of calcium as the ornamented wall of the spore. The significance of the results concerning the presence of calcium in mycorrhizal spore walls is discussed, as is the occurrence of the mycorrhizal species.

Sign in / Sign up

Export Citation Format

Share Document