Full TGIF Record # 317122
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/134352
    Last checked: 03/31/2022
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Benson, Christopher W.; Huff, David R.
Author Affiliation:Pennsylvania State University, University Park, PA
Title:Homoeolog gene expression and global DNA methylation in the allotetraploid subgenomes of golf course Poa annua
Section:Molecular techniques, genetics, and turfgrass breeding oral (includes student competition)
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C05 turfgrass science
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Meeting Info.:Salt Lake City, Utah: November 7-10, 2021
Source:ASA, CSSA and SSSA International Annual Meetings. 2021, p. 134352.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Poa annua (2n=28, AABB) is a globally distributed C3 cool-season grass with economic applications in the turf industry. Biotypes of Poa annua span annual to perennial with perennial types being more desirable due to their dwarf morphology and elevated allocation toward vegetative growth. Efforts to breed perennial type Poa annua for golf course putting green applications have largely been unsuccessful due to phenotypic instability by uncharacterized genetic and non-genetic mechanisms. In this work, we explore the neo-allotetraploid origins of Poa annua at the epigenetic and transcriptomic level to help unravel Poa annua's unique plasticity to a wide range of environments. At the epigenetic level, we observe transgenerational preservation of global DNA methylation in the offspring of plants stressed with golf course-style mowing. Offspring of stressed Poa annua were 37% smaller than unstressed plants, correlating with heightened DNA methylation. At the transcriptomic level, there is no transcriptional evidence to corroborate the distinction between annual and perennial lifestyles. The subgenomes of Poa annua show expression patterns characteristic of neo-allopolyploidy, with both subgenomes constitutively turned on and no detectible subgenome bias. Although both subgenomes carry a heavy transcriptional workload, their expression profiles are distinct from each other with each subgenome playing an important role in stress versatility. We hope to incorporate these findings into our Poa annua breeding program to overcome phenotypic instability and ultimately release of stable Poa annua for golf course putting greens."
Note:This item is an abstract only!
Includes video, "Homoeolog gene expression and global DNA methylation in the allotetraploid subgenomes of golf course Poa annua", 13:00
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Benson, C. W., and D. R. Huff. 2021. Homoeolog gene expression and global DNA methylation in the allotetraploid subgenomes of golf course Poa annua. Agron. Abr. p. 134352.
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    Last checked: 03/31/2022
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