Biology:Arabidopsis arenicola

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Short description: Species of flowering plant


Arctic rock-cress
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Brassicaceae
Genus: Arabidopsis
Species:
A. arenicola
Binomial name
Arabidopsis arenicola
(Richardson ex Hook.) Al-Shehbaz, Elven, D.F. Murray & S.I. Warwick
Synonyms[1][2]
  • Arabis arenicola (Richardson ex Hook.) Gelert
  • Arabis arenicola var. pubescens (S. Watson) Gelert
  • Arabis humifusa (J. Vahl) S. Watson
  • Arabis humifusa var. pubescens S. Watson
  • Cardaminopsis arenicola Á. Löve & D. Löve
  • Eutrema arenicola Richardson ex Hook.
  • Parrya arenicola (Richardson ex Hook.) Hook.
  • Sisymbrium humifusum J. Vahl

Arabidopsis arenicola, the Arctic rock-cress, is a plant species native to the northeastern part of North America. It has been reported from Greenland, Labrador, Nunavut, Northwest Territories, Québec, Ontario, Manitoba, and Saskatchewan. It grows on sandy or gravely beaches or stream banks at elevations below 1,500 metres (4,900 ft).[3][4][5][6]

Arabidopsis arenicola is a perennial herb up to 30 centimetres (12 in) tall, usually hairless or almost hairless. Basal leaves are up to 6 centimetres (2.4 in) long; stem leaves up to 2.5 millimetres (0.098 in) long. Flowers are white, up to 10 millimetres (0.39 in) across. Fruits are straight, smooth, cylindrical or slightly flattened, up to 3 centimetres (1.2 in) long.[3][7][8][9][10]

A. arenicola is a self-fertilizing lineage that arose from the outcrossing species Arabidopsis lyrata, and is associated with range expansion.[11] During this range expansion there was no significant increase in mutational load due to selfing, probably because of quasi-clonal selection.[11]

References

  1. ↑ Tropicos
  2. ↑ The Plant List
  3. ↑ 3.0 3.1 Flora of North America v 7 p 448
  4. ↑ Warwick, S. I., A. Francis & I. A. Al-Shehbaz. 2006. Brassicaceae: Species checklist and database on CD-Rom. Plant Systematics and Evolution 259: 249–258.
  5. ↑ Aiken, S.G., Dallwitz, M.J., Consaul, L.L., McJannet, C.L., Boles, R.L., Argus, G.W., Gillett, J.M., Scott, P.J., Elven, R., LeBlanc, M.C., Gillespie, L.J., Brysting, A.K., Solstad, H., and Harris, J.G. 2007. Flora of the Canadian Arctic Archipelago: Descriptions, Illustrations, Identification, and Information Retrieval. NRC Research Press, National Research Council of Canada, Ottawa
  6. ↑ BONAP (Biota of North America Project), floristic synthesis
  7. ↑ Al-Shehbaz, Ihsan Ali, Elven, Reidar, Murray, David Fletcher, Warwick, Suzanne I. 2006. Phylogenetic position of Arabis arenicola and generic limits of Aphragmus and Eutrema (Brassicaceae) based on sequences of nuclear ribosomal DNA. Canadian Journal of Botany 84(2): 269-281.
  8. ↑ Hooker, William Jackson. 1830. Flora Boreali-Americana 1(2): 67, pl. 24.
  9. ↑ Gelert, Otto Christian Leonor. 1898. Botanisk Tidsskrift 21(3): 289–290.
  10. ↑ Hooker, William Jackson. 1860. Outl. Arct. Pl. 315.
  11. ↑ 11.0 11.1 Willi Y, Lucek K, Bachmann O, Walden N. Recent speciation associated with range expansion and a shift to self-fertilization in North American Arabidopsis. Nat Commun. 2022 Dec 8;13(1):7564. doi: 10.1038/s41467-022-35368-1. PMID: 36481740; PMCID: PMC9732334

Wikidata ☰ Q16147791 entry



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