Dichanthelium lanuginosum
| Dichanthelium lanuginosum | |
|---|---|
_1_(20797185616).jpg)
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| In Gibbon Geyser Basin, Yellowstone N.P. | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Poaceae |
| Subfamily: | Panicoideae |
| Genus: | Dichanthelium |
| Species: | D. lanuginosum
|
| Binomial name | |
| Dichanthelium lanuginosum (Ell.) Gould
| |
Dichanthelium lanuginosum is a species of rosette grass native to North America. It is most common in the central and eastern United States. It is found in a variety of habitats, mostly in open, dry areas.[1]
A variety, D. lanuginosum var. thermale, grows in geothermal areas of Yellowstone National Park, United States. It is able to withstand high temperatures and high acidity in its rhizosphere.[2] In 2007 it was found that the heat tolerance is conferred to the grass by a symbiosis between a fungus and a virus. When it is colonised by the fungus Curvularia protuberata and the fungus is in turn colonised by a particular virus, the grass is able to tolerate soil temperatures of up to 65 °C that would otherwise be lethal.[3] Due to the distinctiveness and isolation of this taxon, it is sometimes considered to be a separate species: Dichanthelium thermale.[1]
References
[edit]- ^ a b Thomas, Justin (21 September 2015). "Revision of Dichanthelium sect. Lanuginosa (POACEAE)" (PDF). Phytoneuron. 2015 (50): 1–50. Retrieved 18 February 2016.
- ^ Stout, R. G.; Stout R. G.; Summers M. L.; Kerstetter T.; McDermott T. R. (1997). "Heat- and acid-tolerance of a grass commonly found in geothermal areas within Yellowstone National Park". Plant Science. 130 (1): 1–9. doi:10.1016/S0168-9452(97)00205-7. ISSN 0168-9452.
- ^ Márquez, Luis; Regina Redman; Russell Rodriguez; Marilyn J. Roossinck (2007). "A Virus in a Fungus in a Plant: Three-Way Symbiosis Required for Thermal Tolerance". Science. 315 (5811): 513–5. doi:10.1126/science.1136237. PMID 17255511.
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