The influence of short-term cold stress on the metabolism of non-structural carbohydrates in polar grasses

Bibliographic Details
Title: The influence of short-term cold stress on the metabolism of non-structural carbohydrates in polar grasses
Authors: Łopieńska-Biernat Elżbieta, Pastorczyk Marta, Giełwanowska Irena, Żółtowska Krystyna, Stryiński Robert, Zaobidna Ewa
Source: Polish Polar Research, Vol 38, Iss 2, Pp 187-204 (2017)
Publisher Information: Polish Academy of Sciences, 2017.
Publication Year: 2017
Collection: LCC:Geology
Subject Terms: Arctic, Antarctic, cold stress, carbohydrates, enzymes, Poaceae, polar plants, Geology, QE1-996.5
More Details: Plants adapt to extremely low temperatures in polar regions by maximizing their photosynthetic efficiency and accumulating cryoprotective and osmoprotective compounds. Flowering plants of the family Poaceae growing in the Arctic and in the Antarctic were investigated. Their responses to cold stress were analyzed under laboratory conditions. Samples were collected after 24 h and 48 h of cold treatment. Quantitative and qualitative changes of sugars are found among different species, but they can differ within a genus of the family Poaceae. The values of the investigated parameters in Poa annua differed considerably depending to the biogeographic origin of plants. At the beginning of the experiment, Antarctic plants were acclimatized in greenhouse characterized by significantly higher content of sugars, including storage reserves, sucrose and starch, but lower total protein content. After 24 h of exposure to cold stress, much smaller changes in the examined parameters were noted in Antarctic plants than in locally grown specimens. Total sugar content and sucrose, starch and glucose levels were nearly constant in P. annua, but they varied significantly. Those changes are responsible for the high adaptability of P. annua to survive and develop in highly unsupportive environments and colonize new regions.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2081-8262
Relation: http://www.degruyter.com/view/j/popore.2017.38.issue-2/popore-2017-0012/popore-2017-0012.xml?format=INT; https://doaj.org/toc/2081-8262
DOI: 10.1515/popore-2017-0012
Access URL: https://doaj.org/article/092a42ddfb0545ffae03bd89883b75e8
Accession Number: edsdoj.092a42ddfb0545ffae03bd89883b75e8
Database: Directory of Open Access Journals
More Details
ISSN:20818262
DOI:10.1515/popore-2017-0012
Published in:Polish Polar Research
Language:English