Full TGIF Record # 149048
Item 1 of 1
DOI:10.1094/PHYTO.2009.99.6.S1
Web URL(s):http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2009.99.6.S1#page=97
    Last checked: 06/11/2009
    Requires: PDF Reader
    Notes: Item is within a single large file
Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Orshinsky, A. M.; Boland, G. J.
Author Affiliation:University of Guelph, Guelph, Ontario, Canada
Title:Colonization of nonwounded and wounded creeping bentgrass (Agrostis stolonifera) by virulent and hypovirulent isolates of Sclerotinia homoeocarpa
Section:Abstracts submitted for presentation at the 2009 APS annual meeting
Other records with the "Abstracts submitted for presentation at the 2009 APS annual meeting" Section
Meeting Info.:Portland, Oregon: August 1-5, 2009
Source:Phytopathology. Vol. 99, No. 6, June Supplement 2009, p. S97-S98.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:2
Keywords:TIC Keywords: Agrostis stolonifera; Dollar spot; Hypovirulence; Sclerotinia homoeocarpa; Viruses
Abstract/Contents:"Sclerotinia homoeocarpa causes dollar spot disease of turf grass. Hypovirulent isolates of S. homoeocarpa contain the mitochondrial virus Ophiostoma novo-ulmi mitovirus 3a (OMV3a). In this study, colonization and lesion production by S. homoeocarpa on nonwounded (NW) and wounded (W) leaves of creeping bentgrass were characterized using light microscopy. On NW leaves, hyphae initially infected the leaf by forming appressoria along cell walls and over stomates by 48 h. Inter- and intracellular hyphae were not common until the NW leaves were heavily colonized at 96 h. Mycelia grew ahead of the lesion for 50 h on both NW and W leaves. On W leaves, mycelia grew directly into and infected wound sites as soon as 8 h, and inter- and intracellular hyphae rapidly developed into a primary infection front. At 16 h, secondary infections developed from superficial mycelia that formed appressoria along cell walls and over stomates. Appressoria gave rise to infection hyphae, spherical infection vesicles, and primary intracellular hyphae. Hypovirulent isolates seldom colonized NW or W leaves past 25 mm after 240 or 168 h, respectively. These results indicate that S. homoeocarpa is a hemibiotroph which colonizes and causes disease more rapidly on W than NW grass; an important factor for turf grass management. The etiology of virulent and hypovirulent isolates were similar, except for slower progression of hypovirulent colonization and disease."
Language:English
References:0
Note:This item is an abstract only!
"2009 APS Annual Meeting"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Orshinsky, A. M., and G. J. Boland. 2009. Colonization of nonwounded and wounded creeping bentgrass (Agrostis stolonifera) by virulent and hypovirulent isolates of Sclerotinia homoeocarpa. Phytopathology. 99(6):p. S97-S98.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=149048
If there are problems with this record, send us feedback about record 149048.
Choices for finding the above item:
DOI: 10.1094/PHYTO.2009.99.6.S1
Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2009.99.6.S1#page=97
    Last checked: 06/11/2009
    Requires: PDF Reader
    Notes: Item is within a single large file
Find Item @ MSU
MSU catalog number: b2219736a
Find from within TIC:
   Digitally in TIC by file name: phytp2009junpres
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)