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Setaria viridis is a species of grass known by many common names, including green foxtail,[1] green bristlegrass,[1] and wild foxtail millet.[1] It is sometimes considered a subspecies of Setaria italica.[1] It is native to Eurasia, but it is known on most continents as an introduced species and is closely related to Setaria faberi, a noxious weed. It is a hardy grass which grows in many types of urban, cultivated, and disturbed habitat, including vacant lots, sidewalks, railroads, lawns, and at the margins of fields. It is the wild antecedent of the crop foxtail millet. This is an annual grass with decumbent or erect stems growing up to a meter long, and known to reach two meters or more at times. The leaf blades are up to 40 centimeters long and 2.5 wide and glabrous. The inflorescence is a dense, compact, spikelike panicle up to 20 centimeters long, growing erect or sometimes nodding at the tip only. Spikelets are 1.8 - 2.2 mm long. Each is subtended by up to three stiff bristles. Its fertile lemmas are finely cross-wrinkled. Setaria viridis is often confused with S. faberi, (Chinese or Giant Foxtail), which has sparse, soft hairs on the leaves and a nodding inflorescence. Setaria viridis is closely related to S. italica (Foxtail Millet), which has larger spikelets about 3 mm long and usually smooth, shiny upper lemmas. Foxtail Millet was cultivated in China by 2700 B.C. and during the Stone Age in Europe. S. viridis has been proposed as a model to study C4 photosynthesis and related bioenergy grasses.[2][3] It has a short life cycle (6–8 weeks), is transformable and is currently being sequenced. Genetic resources are currently being developed by a number of groups. A method to break the prolonged seed dormancy has been discovered recently and all these could contribute towards making S. viridis a choice monocot genetic model system.[4]

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References[edit]

^ a b c d "Setaria viridis". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 13 December 2014.  ^ Brutnell, T; et al. (2010). "Setaria viridis: a model for C4 photosynthesis". Plant Cell. 22: 2537–44. doi:10.1105/tpc.110.075309. PMC 2947182 . PMID 20693355.  ^ Jiang, Hui; Barbier, Hugues; Brutnell, Thomas (2013). "Methods for Performing Crosses in Setaria viridis, a New Model System for the Grasses". Journal of Visualized Experiments (80). doi:10.3791/50527. ISSN 1940-087X.  ^ Sebastian, J; et al. (2014). "Methods to Promote Germination of Dormant Setaria viridis Seeds". PLoS ONE. 9 (4): 2537–44. doi:10.1371/journal.pone.0095109. PMC 3991590 . PMID 24748008. 

External links[edit]

Jepson Manual Treatment USDA Plants Profile Grass Manual Treatment[permanent dead link] Washington Burke Museum Missouri Plants Photo Profile Illinois Wildflowers Photo gallery

Taxon identifiers

Setaria viridis

Wd: Q163052 APDB: 50079 ARKive: setaria-viridis EoL: 1114660 EPPO: SETVI FoC: 200026279 GBIF: 5289684 GrassBase: imp09436 GRIN: 33853 iNaturalist: 79070 IPNI: 1171009-2 ITIS: 41231 NCBI: 4556 Plant List: kew-442790 PLANTS: SEVI4 Tropicos: 25509967 VASCAN: 7954 WCSP: 442790

Panicum viride

Wd: Q39584210 GRIN: 26660 ITIS: 518401 Tropicos: 25518068

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