ArticleBiotechnology for biofuels2017
Field-grown miR156 transgenic switchgrass reproduction, yield, global gene expression analysis, and bioconfinement.
Article in Biotechnology for biofuels, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Temporal regulation of vegetative phase change in plants.Developmental cell · 2024Review
- Transgene Bioconfinement: Don't Flow There.Plants (Basel, Switzerland) · 2023Review
- Downregulation of miR156-TargetedFrontiers in plant science · 2022Article
- Linkage mapping evidence for a syntenic QTL associated with flowering time in perennial CGlobal change biology. Bioenergy · 2021Article
- Ambient Temperature-Responsive Mechanisms Coordinate Regulation of Flowering Time.International journal of molecular sciences · 2018Review
- Switchgrass (Biotechnology for biofuels · 2018Article
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Authors and funding
10 authors.
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Abstract
backgroundGenetic engineering has been effective in altering cell walls for biofuel production in the bioenergy crop, switchgrass (
resultsmiR156 expression was positively associated with decreased and delayed flowering in switchgrass. Line T27 did not flower during the 2-year study. Line T37 did flower, but not all plants produced panicles. Flowering was delayed in T37, resulting in 70.6% fewer flowers than controls during the second field year with commensurate decreased seed yield: 1205 seeds per plant vs. 18,539 produced by each control. These results are notable given that line T37 produced equivalent vegetative aboveground biomass to the controls. miR156 transcript abundance of field-grown plants was congruent with greenhouse results. The five miR156 SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (
conclusionsBecause of the research field's geographical features, this study was the first instance of any genetically engineered trait in switchgrass, in which experimental plants were allowed to flower in the field in the eastern U.S.; USDA-APHIS-BRS regulators allowed open flowering. We found that medium overexpression of miR156, e.g., line T37, resulted in delayed and reduced flowering accompanied by high biomass production. We propose that induced miR156 expression could be further developed as a transgenic switchgrass bioconfinement tool to enable eventual commercialization.
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