Peeking through a frosty window: molecular insights into the ecology of Arctic soil fungi

2012 ◽  
Vol 5 (4) ◽  
pp. 419-429 ◽  
Author(s):  
Ina Timling ◽  
D. Lee Taylor
Keyword(s):  
Soil Fungi ◽  
Arctic Soil

Oxidation of manganous salts of manganese by soil fungi

1972 ◽  
Vol 18 (6) ◽  
pp. 793-799 ◽  
Author(s):  
M. I. Timonin ◽  
W. I. Illman ◽  
T. Hartgerink
Keyword(s):  
Hydrochloric Acid ◽  
Microscopic Examination ◽  
Soil Fungi ◽  
Ammonium Acetate ◽  
Bacterial Culture ◽  
Microbiological Analysis ◽  
Tundra Soils ◽  
Arctic Soil ◽  
Sulfate Medium ◽  
Growth Of Fungi

The microbiological analysis of soils from Ontario, Yukon, and Northwest Territories showed the presence of manganese-oxidizing bacteria, Actinomycetes, and fungi. Bacteria and Actinomycetes were predominant in boreal and tundra soils whereas fungi were predominant in the Ontario samples. The 18 species of fungi studied were able to oxidize 10 different compounds of manganese including a chelated form as well as an organic Mn2+ complex. Coniothyrium fuckelii, Periconia sp., P. circinata, P. macrospinosa, Phoma sp., and Sporothrix sp. oxidized all 10 Mn2+ compounds tested. One bacterial culture isolated from Arctic soil was able to oxidize only Mn2+ acetate and tartrate salts.The addition to Mn2+ sulfate medium of either calcium salts of several organic acids or various carbohydrates affected the growth of fungi as well as the nature of the end product of Mn2+ oxidation. Thus, the manganic granules produced by Cephalosporium sp. in the medium in the presence of glucose or starch were resistant to solubilization, dissolving only after 6 h in 1 N ammonium acetate (pH 7.0) containing 0.2% of hydroquinone. Granules produced by P. circinata in the presence of cellulose were insoluble in this solvent. On dissolution of the granules with 30% hydrochloric acid, the residue did not show the presence of bacteria under microscopic examination.

Screening and Identification of Soil Fungi with Potential of Plastic Degrading Ability

2011 ◽  
Vol 3 (12) ◽  
pp. 62-64 ◽  
Author(s):  
Sachin Sakhalkar ◽  
◽  
Dr. R.L. Mishra Dr. R.L. Mishra
Keyword(s):  
Soil Fungi ◽  
Screening And Identification

Metam Sodium Combined with Chloropicrin as an Alternative to Methyl Bromide Fumigation for Tomato

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 525b-525 ◽  
Author(s):  
S.J. Locascio ◽  
D.W. Dickson
Keyword(s):  
United States ◽  
Lycopersicon Esculentum ◽  
Pest Control ◽  
Methyl Bromide ◽  
Soil Fungi ◽  
Good Control ◽  
The United States ◽  
Metam Sodium ◽  
Additional Water ◽  
Phase Out

In past work, dichloropropene + 17% Pic (1,3-D + Pic) at 327 L·ha–1 plus pebulate provided good control of nematode, soil fungi, and nutsedge in mulched tomato (Lycopersicon esculentum Mill.) and is considered the best alternative for methyl bromide (MBr) + chloropicrin (Pic), which is scheduled for phase-out in the United States by Jan. 2001. Metam-sodium did not provide acceptable pest control. In the present study, metam-Na (295 L·ha–1 combined with Pic (168 kg·ha–1) + 4.5 kg·ha–1 pebulate, and 1,3-D + 35% Pic at 168 and 225 L·ha–1 + pebulate were compared to MBr-Pic (98-2% at 345 kg·ha–1 and 67-33% at 505 kg·ha–1). Fumigants were injected into the bed except metam-Na and pebulate were surface-applied and incorporated and drip tubing and mulch were applied. Marketable yields with MBr-Pic, 225 L·ha–1 1,3-D + Pic, and metam-Na + Pic were higher than with the check. Yields with metam-Na alone or with additional water before transplanting were similar to the check. Nutsedge was controlled with MBr-Pic and all treatments with pebulate. Nematode root-gall ratings were high on tomato grown without fumigants (8.9 rating on a scale of 0 to 10 with 0 = no galling), low with MBr-Pic (0.33), and intermediate with all other treatments (2.2 to 5.5) except with 168 L·ha–1 1-3-D + Pic (8.3). This study indicates that metam-Na + Pic + pebulate also is a possible alternative to MBr-Pic for tomato.

PHOSPHATASE ACTIVITY OF SOME COMMON SOIL FUNGI

Soil Science ◽  
1959 ◽  
Vol 87 (5) ◽  
pp. 305-310 ◽  
Author(s):  
L. E. CASIDA
Keyword(s):  
Phosphatase Activity ◽  
Soil Fungi
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