Full TGIF Record # 309553
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/120049
    Last checked: 12/03/2019
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Hutchens, Wendell J.; Henderson, Caleb A.; Bush, Elizabeth; McCall, David S.
Author Affiliation:School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA
Title:Geographic distribution of spring dead spot species in the Mid-Atlantic
Section:C05 turfgrass science
Other records with the "C05 turfgrass science" Section

Turfgrass pest management poster: Diseases, insects, weeds (includes student competition)
Other records with the "Turfgrass pest management poster: Diseases, insects, weeds (includes student competition)" Section
Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 120049.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Keywords:TIC Keywords: Chemical sensitivity; DNA extraction; Disease distribution; Disease surveys; Genetic analysis; Geographical distribution; Ophiosphaerella herpotricha; Ophiosphaerella korrae; Spring dead spot
Abstract/Contents:"Spring dead spot (SDS) is one of the most severe diseases of bermudagrass (Cynodon spp.) in areas where bermudagrass enters winter dormancy. Two predominant fungal species, Ophiosphaerella herpotricha and O. korrae, cause SDS in North America. The two species differ in their sensitivity to a number of fungicides and nitrogen sources, so understanding their distribution is pertinent for SDS management recommendations. A species distribution survey of the pathogens causing SDS in the Mid-Atlantic region of the United States (i.e. DE, MD, VA, and NC) was conducted. One to ten samples of bermudagrass exhibiting SDS symptoms were collected from 40 locations throughout the Mid-Atlantic region. Fungal DNA was then extracted from the plant tissue, and the Ophiosphaerella species was identified using RT-qPCR with the OHITS1, OHITS2, OKITS1, and OKITS2 primers, which amplified internal transcribed spacer (ITS) regions of the nuclear rDNA. Of the 40 locations sampled, 22 of the locations had isolates that were predominantly (>50%) O. herpotricha, 17 of the herpotricha and O. korrae isolates. Both species were present at 20 of the 40 locations sampled, further complicating fungicide control recommendations. However, the geographic region in which the samples were collected influenced which species was predominant. Most samples collected from the Piedmont and Appalachian Mountains of VA were O. herpotricha, while the majority of samples collected from the Coastal Plains of VA and NC tested positive as O. korrae. These data could aid turfgrass managers through geography-based SDS control recommendations for more effective fungicide applications."
Note:This item is an abstract only!
"Poster #1622"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hutchens, W. J., C. A. Henderson, E. Bush, and D. S. McCall. 2019. Geographic distribution of spring dead spot species in the Mid-Atlantic. Agron. Abr. p. 120049.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=309553
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    Last checked: 12/03/2019
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