Biological Sciences Seminar
Dr. Guo-qing Song
Plant Biotechnology Resource and Outreach Center, Department of Horticulture,
Michigan State University
Abstract: Plant Biotechnology Resource and Outreach Center of Michigan State University is dedicated to the safe deployment of plant biotechnological advancements for specialty crops to Michigan and the world. In the past decade, we have transformed over 20 plant species. The focus in this presentation will be on biotechnological approaches to increase productivity of two major fruit crops (cherry and blueberry) in Michigan. Transgenic cherry rootstocks with virus resistance to Prunus Necrotic Ring Spot Virus (PNRSV) were produced using RNA interference (RNAi)-mediated gene silencing. Transgrafting on transgenic rootstock enabled PNRSV resistance in non-transgenic sweet cherry scion. For blueberries, overexpression of a blueberry DWARF AND DELAYED FLOWERING 1 in blueberry increased freezing tolerance and berry productivity. Transgenic blueberries overexpressing a blueberry FLOWERING LOCUS T was produced and will facilitate FAST-TRACK blueberry breeding. Overexpression of the K-domain of a blueberry SUPPRESSOR of Overexpression of Constans 1 gene increased berry productivity through the interaction of MIKC MADS-box genes. This K-domain technology has also shown a potential to increase productivity of staple crops. In summary, to feed the future, new biotechnological tools (e.g., genome editing, transgrafting, and cisgenesis) are powerful to enhance productivity of horticultural crops.
1. Guo-qing Song* and Xuan Gao (2017) Transcriptomic changes reveal gene networks responding to the overexpression of a blueberry DWARF AND DELAYED FLOWERING 1 gene in transgenic blueberry plants. BMC Plant Biology DOI: 10.1186/s12870-017-1053-z.
2. Xuan Gao, Aaron Walworth, Charity Mackie, and Guo-qing Song* (2016) Overexpression of a blueberry FLOWERING LOCUS T is associated with changes in the expression of phytohormone related genes in blueberry plants. Horticulture Research doi: 10.1038/hortres.2016.53.
3. Aaron Walworth, Benli Chai, Guo-qing Song* 2016. Transcript profile of flowering regulatory genes in VcFT-overexpressing blueberry plants. PLOS ONE 11(6): e0156993. doi:10.1371/journal.pone.0156993.
4. Zhao Dongyan and Guo-qing Song* (2014) Rootstock-to-scion transfer of transgene-derived small interfering RNAs and their effect on virus resistance in non-transgenic sweet cherry. Plant Biotechnology Journal DOI: 10.1111/pbi.12243.
Thursday, October 12 at 3:00 pm to 4:00 pm
Electrical Energy Resources Center (EERC), 229
1400 Townsend Drive, Houghton, MI 49931