Journal ArticleDOI
Pectic zymograms and taxonomy and pathogenicity of the Ceratobasidiaceae
TLDR
The pectic enzymes of 140 isolates of Rhizoctonia-1ike fungi from the Western Australian grainbelt were examined by electrophoresis and found to fall into 11 distinct zymogram groups (ZG).Abstract:
The pectic enzymes of 140 isolates of Rhizoctonia-1ike fungi from the Western Australian grainbelt were examined by electrophoresis and found to fall into 11 distinct zymogram groups (ZG). Isolates within a ZG had a similar cultural and morphological appearance and were either all multinucleate or all binucleate. Some isolates from most ZGs sporulated when transferred from potato-dextrose-marmite agar to water agar. Isolates from within a ZG had the same teleomorph. Pathogenicity of the isolates was tested against wheat and lupins. All isolates from within a ZG were consistent in the type of lesions they produced and in their virulence towards these hosts. Rhizoctonia patch disease of cereals and lupins appears to be caused by isolates from ZG 1 and ZG 2. Severe reddish-brown and brown hypocotyl rots of lupins were caused by ZG 3 and ZG 4 isolates respectively. Five Ceratobasidium groups (CZG), one Waitea group (WZG) and ZG 5 had weak to nil pathogenicity towards wheat and lupins.read more
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Journal ArticleDOI
Aggregate sheath spot and sheath spot of rice
TL;DR: This paper is the first comprehensive review ofSheath spot and aggregate sheath spot of rice, caused by Rhizoctonia oryzae-sativae and R. oryzAE, relating to distribution, host range, biology, symptoms, disease cycle, epidemiology, pathogenicity, identification and control methods, yield losses and resistance.
Journal ArticleDOI
Temperature and water potential effects on growth and pathogenicity of Rhizoctonia solani AG-11 to lupin
TL;DR: Rhizoctonia solani anastomosis group (AG) 11 causes serious damping-off and hypocotyl rot of lupins and is wide-spread in the northern grain-belt of Western Australia, and growth of AG-11 was compared to AG-8, which causes bare-patch of grain crops including lupin.
Journal ArticleDOI
Diversity of isolates of Rhizoctonia solani AG-1 1A and their relationship to other anastomosis groups based on pectic zymograms and molecular analysis
TL;DR: Isolates of AG-1 1A from various countries had a lower degree of variability in zymogram patterns and AT-DNA RFLPS, while field isolates obtained from one field experiment consisted of one identical pattern, indicating that they were not clones sensu stricto.
Journal ArticleDOI
Context dependent fungal and bacterial soil community shifts in response to recent wildfires in the Southern Appalachian Mountains
Shawn P. Brown,Allison M. Veach,Jonathan L. Horton,Emerald Ford,Ari Jumpponen,Richard E. Baird +5 more
TL;DR: This paper examined wildfire impacts on soil chemistry and below ground communities (fungi and bacteria) within two substrates (duff and soil) at two adjacent locations with similar plant communities (GRSM and Nantahala National Forest) from replicate plots representing a range of fire severities (unburned, low severity, moderate severity, severe).
Book ChapterDOI
Characterization of Rhizoctonia Isolates, Disease Occurrence and Management in Cereals
TL;DR: Although all cereals are susceptible to infection by Rhizoctonia spp.
References
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Journal ArticleDOI
The genetics and pathology of rhizoctonia solani
TL;DR: The objective of this paper is to review the genetical and pathological research on Rhizoctonia solani Kuhn from 1965 to the present and to discuss each anastomosis group separately.
Journal ArticleDOI
A selective medium for the quantitative determination of Rhizoctonia solani in soil.
W. h. Ko,Frances K. Hora +1 more
Journal ArticleDOI
Safranin O as a rapid nuclear stain for fungi.
TL;DR: Maximum germination of both basidiospores and oidia was obtained on agar media containing cornmeal and malt extract with malt-extract-liquid medium, apparently providing a stimulatory substance in sufficient quantity to yield maximum percent germination.