Title High anatomical and low genetic diversity in Deschampsia antarctica Desv. from King George Island, the Antarctic
Author Chwedorzewska, K.J.; Gielwanowska, I.; Szczuka, E.; Bochenek, A.
Author Affil Chwedorzewska, K.J., Polska Akademia Nauk, Zaklad Biologii Antarktyki, Warsaw, Poland. Other: Uniwersytet Marii Curie-Sklodowskiej, Poland
Source Polish Polar Research, 29(4), p.377- 386, . Publisher: Panstwowe Wydawnictwo Naukowe, Warsaw, Poland. ISSN: 0138- 0338
Publication Date 2008
Notes In English. 21 refs. Ant. Acc. No: 86117. CRREL Acc. No: 63004470
Index Terms ecology; fungi; grasses; plant ecology; Antarctica--King George Island; anatomy; Antarctica; biodiversity; genetics; habitat; International Polar Year 2007-08; IPY 2007-08 Research Publications; King George Island; leaves; morphology; Plantae; Scotia Sea Islands; South Shetland Islands
Abstract Morphological, anatomical, and genetic differences between Deschampsia antarctica Desv. (Poaceae) growing in the Antarctic in dry site as well as plants of the same species growing near the seashore were investigated. The plants from the two microhabitats were found to differ morphologically in size and in the arrangement, shape, and color of the leaves. The leaves of plants growing in the dry site had stronger xerophytic features than those growing in the wet site. The anatomical structure of the root of plants growing in wet conditions showed strong reaction to stress factors operating at the seashore. Molecular profiling of D. antarctica individuals showed low variability within the analysed populations. The results of the present study conclude that the two different forms of D. antarctica are ecotypes.
Publication Type journal article
Record ID 292307