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1

Generative reproduction of Antarctic grasses, the native species Deschampsia antarctica Desv. and the alien species Poa annua L.

100%
Gielwanowska I., Kellmann-Sopyla W.
Polish Polar Research
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2015
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tom 36
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nr 3
2

What is the composition and content of soluble carbohydrates in developing and mature diaspores of Antarctic vascular plants?

81%
Kellmann-Sopyla W., Gielwanowska I., Lahuta L. B.
Acta Physiologiae Plantarum
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2016
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tom 38
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nr 01-10th International Conference Plant Functioning under Environmental Stress...
3

Morphological and anatomical traits of polar Caryophyllaceae diaspores as adaptive strategy for hard environmental conditions

81%
Koc J., Gielwanowska I., Kellmann-Sopyla W.
Acta Physiologiae Plantarum
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2016
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tom 38
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nr 01-10th International Conference Plant Functioning under Environmental Stress...
4
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Content available

Influence of environmental factors on reproduction of polar vascular plants

81%
Kellmann-Sopyla W., Pastorczyk M., Gielwanowska I.
Papers on Global Change
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2011
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nr 18
In the last few decades, changes of reproductive pattern of polar vascular plants have been observed, for the benefit of generative propagation. The reasons for this phenomenon are attributed to intensively following climate change, whose effects may be various. Warming causes the production of the greater number of generative structures, with higher quality. Our macroscopic observations conducted on specimens of polar vascular plants, cultivated in University of Warmia and Mazury greenhouse, indicate that the effect of temperature increase on flower development and seed formation is inconsistent. On the other hand enhanced levels of UV-B radiation can negatively affect seedlings. The complexity of the climate change causes tremendous difficulties in defining a clear and unquestioned way of modifications during the reproductive phase of the described plants.
5

Soluble carbohydrates in developing and mature diaspores of polar Caryophyllaceae and Poaceae

81%
Kellmann-Sopyla W., Lahuta L. B., Gielwanowska I., Gorecki R. J.
Acta Physiologiae Plantarum
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2015
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tom 37
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nr 06
The accumulation of soluble carbohydrates in maturing diaspores of flowering plants comprising Arctic populations of Cerastium alpinum, indigenous Antarctic species Colobanthus quitensis and Deschampsia antarctica, and cosmopolitan Poa annua from the Antarctic was investigated. For comparative purposes, the diaspores of two species of flowering plants growing in the area of Olsztyn (Poland), Poa annua (Poaceae) and Cerastium arvense (Caryophyllaceae) were used. A qualitative and quantitative analysis of soluble carbohydrates conducted by means of high-resolution gas chromatography showed that monosaccharides (glucose and fructose), maltose and sucrose, raffinose, myo-inositol and galactinol are ubiquitous in developing and mature diaspores among investigated species. Moreover, D. antarctica and P. annua caryopses additionally contained stachyose and 1-kestose; the seeds of Caryophyllaceae studied were found to contain D-pinitol and D-ononitol. The development and maturation of the seeds of polar Caryophyllaceae and Poaceae were accompanied by the changes in the concentration of their soluble carbohydrates. During maturation, seeds accumulated galactinol and raffinose family of oligosaccharides (RFOs), except C. quitensis. Although seeds of the studied Caryophyllaceae contained D-pinitol and lower amounts of D-ononitol, they did not accumulate α-D-galactoside derivatives of mentioned cyclitols. P. annua caryopses, occurring in the Antarctic, were found to accumulate considerably higher amounts of sucrose and 1-kestose than those developed in Olsztyn.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Influence of environmental changes on physiology and development of polar vascular plant

81%
Gielwanowska I., Pastorczyk M., Kellmann-Sopyla W.
Papers on Global Change
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2011
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nr 18
Polar vascular plants native to the Arctic and the Antarctic geobotanical zone have been growing and reproducing effectively under difficult environmental conditions, colonizing frozen ground areas formerly covered by ice. Our macroscopic observations and microscopic studies conducted by means of a light microscope (LM) and transmission electron microscope (TEM) concerning the anatomical and ultrastructural observations of vegetative and generative tissue in Cerastium arcticum, Colobanthus quitensis, Silene involucrata, plants from Caryophyllaceae and Deschampsia antarctica, Poa annua and Poa arctica, from Poaceae family. In the studies, special attention was paid to plants coming from diversity habitats where stress factors operated with clearly different intensity. In all examinations plants, differences in anatomy were considerable. In Deschampsia antarctica the adaxial epidermis of hairgrass leaves from a humid microhabitat, bulliform cells differentiated. Mesophyll was composed of cells of irregular shapes and resembled aerenchyma. The ultrastructural observations of mesophyll in all plants showed tight adherence of chloroplasts, mitochondria and peroxisomes, surface deformations of these organelles and formation of characteristic outgrowths and pocket concavities filled with cytoplasm with vesicles and organelles by chloroplasts. In reproduction biology of examined Caryophyllaceae and Poaceae plants growing in natural conditions, in the Arctic and in the Antarctic, and in a greenhouse in Olsztyn showed that this plant develops two types of bisexual flowers. Almost all ovules developed and formed seeds with a completely differentiated embryo both under natural conditions in the Arctic and the Antarctic and in a greenhouse in Olsztyn.
7
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The effects of methanesulfonic acid on seed germination and morphophysiological changes in the seedlings of two Colobanthus species

61%
Koc J., Wasilewski J., Androsiuk P., Kellmann-Sopyla W., Chwedorzewska K. J., Gielwanowska I.
Acta Societatis Botanicorum Poloniae
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2018
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tom 87
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nr 4
The effect of methanesulfonic acid (MSA) on the morphophysiology and biochemistry of the subantarctic species Colobanthus apetalus and the Antarctic species Colobanthus quitensis was examined. We evaluated the effects of various concentrations of MSA on the germination capacity and germination rate of seeds, seedling growth, chlorophyll fluorescence in cotyledons, and the proline content of seedlings under laboratory conditions at temperatures of 20°C (day) and 10°C (night) with a 12/12 h photoperiod. The examined C. apetalus seeds were grown in a greenhouse, and C. quitensis seeds were harvested in Antarctica and grown in a greenhouse (Olsztyn, Poland). The seeds of C. apetalus were characterized by the highest germination capacity and the highest germination rate, whereas C. quitensis seedlings were characterized by the most favorable growth and development. Only the highest concentrations of MSA decreased the intensity of chlorophyll fluorescence in the cotyledons of both Colobanthus species. The proline content of C. apetalus and C. quitensis seedlings increased significantly after MSA treatments. The results of this study clearly indicated that Colobanthus quitensis is more resistant to chemical stress induced by MSA. This is a first study to investigate the influence of MSA on the morphophysiology and biochemistry of higher plants.
8

Comparative micromorphology and anatomy of generative structures among three Colobanthus species

51%
Koc J., Milarska S., Kleps A., Chwedorzewska K., Kellmann-Sopyla W., Androsiuk P., Pupel P., Gielwanowska I.
Acta Biologica Cracoviensia. Series Botanica. Supplement
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2018
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tom 60
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nr 1
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