Wyniki wyszukiwania

1

The 5th conference of the section of woody plant diseases of the Polish Phytopathological Society

100%

Przybyl K., Manka M.

Phytopathologia Polonica

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2001

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tom 22

2

Immunolocalization and in vitro cryoprotective activity of PCA60: a peach dehydrin

100%

Wisniewski M.

Biological Bulletin of Poznań. Supplement

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1997

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tom 34

3

The occurrence of polyprenols in seeds and leaves of woody plants

100%

Chouda M., Jankowski W.

Acta Biochimica Polonica

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2005

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tom 52

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nr 1

The contents of the heterogenous group of polyisoprenoids was found about two orders of magnitude lower in seeds than the amount of polyprenols and/or their carboxylic esters accumulated during vegetation season in leaves. In contrast to leaves, no seeds were found containing more than 0.5 mg of these lipids per gram of dry tissue. Almost 50% had less than 0.01 mg/g — the amount which is the limit of detection by the procedure used in this work. In gymnosperms (10 representatives of Cupressaceae, Pinaceae and Taxaceae) the polyprenol spectra in seeds and in needles were similar. In angiosperms (25 representatives of 13 botanical families) the polyisoprenoid mixture in seeds resembled the minor, additional subfamily found in leaves.

4

Environmental regulation and physiological basis of freezing tolerance in woody plants

100%

Li C., Junttila O., Palva E. T.

Acta Physiologiae Plantarum

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2004

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tom 26

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nr 2

5

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Forest tree research in post genomic era. Introduction to systems biology of broadleaves

84%

Staszak A. M., Pawlowski T. A.

Dendrobiology

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2012

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tom 68

Trees are long living organisms, rarely used in molecular experiments because of large size of the genome and long time of reproduction cycle. Sequencing data from Populus trichocarpa genome allowed for the development of research on the processes associated with tree biology such as secondary wood formation, long-term perennial growth, seasonal changes, biotic interactions, evolution etc. Reference data enable the investigation of non-model trees such as Quercus or Fagus, having ecological and economic significance. During projects scientists use genomic, transcriptomic, proteomic and metabolomic approaches which contribute to better understanding of the physiological processes regulating tree biology. Data collected from these multiple studies need to be integrated. The integration of data is the subject of the newly established field of science called systems biology. This review presents progress in tree research after finishing the sequencing project of Populus. It concentrates on modern trends in 'omics' and systems biology study of temperate broadleave trees during the last 10 years of studies.

6

Ecological strategy at cell size level to respond to stressed environments

84%

Wang H., Liu Y., Chen H.

Polish Journal of Ecology

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2016

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tom 64

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nr 2

The cell size variations in woody plants in various environments are not well known, and the underlying mechanism has not been fully analyzed. 2. The current study focused on the intraspecific and interspecific size variations in palisade cells occurring in 76 woody species along an elevation gradient (1800–4500 m a.s.l.) on Gongga Montain (1400–7552 m a.s.l.) in southwest China, which included tropical and subtropical genera of broad-leaved forest flora including Salix hyperba as the species occurring on all elevations. We hypothesized that cell size is regulated by alterations in width-length scaling (L-D ratio) to mediate a surface-to-volume ratio (S/V) most suitable for the prevailing environmental conditions. 3. It was observed that cell size co-varied similarly with environmental conditions at the conspecifics, congenerics, and interspecifics levels investigated. Cell sizes decreased among conspecifics, or increase among congenerics and interspecifics via negative or positive scaling of width-length ratio at the cellular level. However, this dichotomously differing tendency may be ecologically constrained by both a cost-increasing and benefit-diminishing mechanism of cell dimension with increasing elevation at the species level, implying a ‘middle way’ strategy for species to stressed environments. 4. The implications of the results for regional floristic evolution are discussed.

7

Selective foraging on tree and shrub species by the European beaver Castor fiber in lowland and highland habitats in Western Poland

84%

Wazna A., Cichocki J., Bojarski J., Gabrys G.

Polish Journal of Ecology

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2018

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tom 66

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nr 3

In this study, generic composition of food and foraging preferences of the European beaver were determined on sites where the beavers were reintroduced after more than 200 years of absence. Research area was located on lowland (Silesian Lowland) and highland habitats (Bystrzyckie Mountains, Wałbrzyskie Mountains) in western Poland. During the study period, 17,418 trees and shrubs growing within the feeding area of the beavers were marked, out of which 4,669 were found to be cut by beavers. The results showed that the foraging preferences of beavers depend on the availability and diversity of the local food sources. In the lowlands beavers preferred the following species of trees and shrubs as their primary food source: Salix cinerea, S. fragilis, S. caprea, Cornus sanguinea and Populus tremula. In the highlands, beavers preferred Corylus avellana, Sorbus aucuparia, and Fagus sylvatica due to the low availability of Salix and Populus species. Moreover, in the highlands, beavers had to cover longer distances to reach the feeding sites and had to cut trees with larger diameter than in the lowlands.

8

Melampsoridium hiratsukanum - invasive rust species in Lithuania, and its co-occurrence with eriophylid mite

84%

Markovskaja S.

Acta Mycologica

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2013

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tom 48

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nr 2

An invasive East Asian rust fungus Melampsoridium hiratsukanum, obligate biotroph belonging to Pucciniastraceae, Pucciniales (Basidiomycota) is found widely spread on leaves of Alnus incana in eastern, central and southern parts of Lithuania. On Alnus glutinosa this fungus is rare, sometimes occurring with an alder leaf pest, a microscopic eriophyid gall mite Acalitus brevitarsus. Information on the distribution patterns, ecological and morphological characters of this neomycete is given.

9

Population structure and regeneration status of most abundant medicinal woody plants in Mabira Central Forest Reserve management zones

84%

Tumuhe C. L., Mwine R. N., Manana S.

Environment, Earth and Ecology

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2018

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tom 2

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nr 1

10

Black cherry (Prunus serotina) invasion in a Scots pine forest: relationships between soil properties and vegetation

84%

Halarewicz A., Pruchniewicz D., Kawalko D.

Polish Journal of Ecology

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2017

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tom 65

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nr 2

Prunus serotina Ehrh. is a rapidly expanding invasive in European temperate forests, threatening native species biodiversity. Three alternative models, ‘the passenger’, ‘the driver’, and ‘the opportunist’ were used to determine the interactions between the invasive species, the native community, and features of the habitat. To assess the relationships between soil properties and species composition of a Scots pine forest invaded by P. serotina, we randomly selected twelve research plots in each of four stands in the south-western part of Poland. We used the phytosociological relevé method and determined selected soil properties (total nitrogen, organic carbon, and pH value) in the organic and humus horizons. Based on redundancy analysis, we determined that selected soil properties explained 38% of the total variation in species composition of the Scots pine forest with P. serotina, indicating that community interactions followed the ‘passenger’ model. At the same time, we found that P. serotina invaded via the ‘driver’ model, since the decrease in soil C:N ratio correlated with black cherry presence, and showed a significant impact on the floristic diversity in the invaded phytocenoses. We conclude that soil parameters seem to facilitate the invasion of P. serotina, and comprise the consequences of this process.

11

Effects of environmental variation and spatial distance on the beta diversity of woody plant functional groups in a tropical forest

84%

Zhang Z., Zang R., Wang L., Wang G., Zhang J.

Polish Journal of Ecology

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2012

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tom 60

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nr 3

Tropical forests are among the most complex ecosystems on Earth. The high alpha-diversity of tropical forests has been amply documented, however, beta diversity, equally important for us to understand the mechanism of biodiversity maintenance, has seldom been studied. The main current hypotheses about the origin of beta diversity are as follows: (1) species composition is uniform over large areas; (2) species composition fluctuates in a random, auto-correlated way emphasizing spatially limited dispersal; (3) species composition is related to environmental conditions. Testing these hypotheses is important to understand ecosystem function and to manage ecosystems effectively. In this study, we quantified the relative influence of environmental variation and spatial distance on the beta diversity of woody plant functional groups in a tropical forest of Hainan Island, China. Floristic and environmental data were collected from 135 grid-sample plots. We classified woody plant functional groups based on frequency, growth forms and successional status, respectively. To see whether environmental variation and spatial distance influence beta diversity, the simple and partial Mantel tests, in conjunction with linear and spline regression models were performed. The results showed that environmental heterogeneity and spatial distance were the primary determinants of pair-wise species composition differences between plots in the study area. Common, tree and climax species were more sensitive than the others to changes in environmental heterogeneity and spatial distance. Except for rare, pioneer and shrub species, the others had apparently negative relationship between spatial distance and similarity. The distance decay of similarity was determined by joint influences of spatial distance and spatially-structured environmental variables. Spatial distance had the clearest effect on beta diversity at distances <15 km and with the increase in spatial distance, beta diversity was gradually controlled by environmental heterogeneity. This study provides further support for neutral theory and environmental control hypothesis as opposed to uniformly distributed hypothesis.

12

Communities of mites (Acari) in litter and soil under the invasive red oak (Quercus rubra L.) and native pedunculate oak (Q. robur L.)

84%

Kohyt J., Skubala P.

Biological Letters

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2013

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tom 50

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nr 2

13

Rubus maximus (Rosaceae) found also in Poland

84%

Kosinski P., Zielinski J.

Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana

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2013

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tom 17

Rubus maximus Marsson, regional bramble species occurring mainly in the Baltic costal area of the NE Germany, was reported from Świnoujście in XIX century. Its occurrence in Poland was confirmed by the new locality only recently found in the Wolin Island.

14

Assessment of floral organs state of Tilia genus representatives under environment pollution conditions caused by emissions of Prydniprovska Thermal Power Plant, Dnipropetrovsk city

84%

Grytsay Z., Miasoid G.

International Letters of Natural Sciences

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2016

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tom 55

The effect of polluting the environment with the emissions of the Prydniprovska Thermal Power Plant emissions, Dnipropetrovsk city, on morphometric and cytogenetic indicators of floral system of Tilia genus representatives was examined. The research was conducted in June and July in 2015. The studied objects in conditions of technogenesis show reduction of the bloom intensity rate and an increase of pollen grain sterility, which is the most significant in T. сordata. Sensitive indicators of Tilia generative sphere were suggested as informative test parameters for the use in monitoring the environment state. The recommendations are offered on the use of species of the Tilia genus in gardening industrial sites in terms of the steppe Prydniprovya.

15

Hare and vole browsing preferences during winter

84%

Hjalten J., Danell K., Ericson L.

Acta Theriologica

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2004

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tom 49

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nr 1

The aim with this study was to, under controlled conditions, determine the food preference of mountain hares Lepus timidus Linnaeus, 1758 and back voles (Clethrio- nomys glareolus (Schreber, 1780) for a substantial part of the woody plants potentially available for these herbivores during winter. In addition, we compared hare and vole preference patterns. Thirteen woody plant species were simultaneously presented to 9 captive voles and 9 captive hares in preference tests during winter. Consumption by hares from 50 g bundles (one per species) was measured after 3 h, whereas shoot consumption by voles was measured after 12 h. Both hares and voles preferred deciduous species to conifers, Populus tremula, and Vaccinium myrtillus being the most preferred species. However, there was considerable variation in palatability among deciduous plant species and only a marginally significant correlation was found between hare and vole preference. One striking differences between hares and voles was that Sorbus aucuparia was the most utilised by voles but the least preferred by hares. In conclusion, deciduous plant species were generally considerably more palatable to hares and voles than conifers, which is consistent with current theories. Nevertheless, the high variation in palatability among deciduous trees and the difference in preference between hares and voles indicate more complex and species-specific patterns with regard to plant- animal interactions. The latter also suggests that hares and voles differ in their dietary adaptations and have different dietary constrains.

16

The roles of small rodents in creating patchy environments

84%

Ostfeld R. S., Lewin N., Schnurr J., Pickett S. T. A., Canham C. D.

Polish Ecological Studies

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1994

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tom 20

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nr 3-4

17

Factors influencing lateral-branch formation in woody plants

84%

Jacyna T.

Acta Agrobotanica

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2002

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tom 55

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nr 2

Charakterystyczna cechą wielu gatunków roślin drzewiastych jest zdolność do tworzenia w pierwszym roku po okulizacji w szkółce bocznych pędów zwanych syleptycznymi. Obecność tych pędów w dużej mierze decyduje o szybkości wejścia roślin gatunków sadowniczych w okres owocowania, natomiast u drzew ozdobnych wpływa na ich walory estetyczne stanowiące isitny element architektury krajobrazu. Indukcja pędów syleptycznych uwarunkowana jest stopniem występowania dominacji dominacji wierzchołkowej, co ma swoje bezpośrednie źródło w genotypie danej rośliny. Ograniczenie dominacji wierzchołkowej jest odwrotnie proporcjonalne do syllepsis rośliny. Takie gatunki sadownicze jak brzoskwinie lub wiśnie charakteryzują się dużymi zdolnościami do wydawania pędów syleptycznych w przeciwieństwie do jabłoni lub czereśni, które pod tym względem wykazują duże zróżnicowanie między odmianami. Stymulowanie syllepsis polega na ograniczeniu lub eliminacji dominacji wierzchołkowej. Syllepsis roślin drzewiastych może być modyfikowane czynnikami biotycznymi jak podkładka oraz czynnikami abiotycznymi takimi jak klimat, gleba i technologia produkcji szkółkarskiej. Jednakże dominującą rolę w indukcji pędów syleptycznych odgrywają genetyczne predspozycje rośliny. Praca ta ma charakter przeglądowy i omawia wyniki wielu badań prowadzonych w ostatnich trzydziestu latach w wielu krajach nad anatomicznymi i morfologicznymi aspektami syllepsis (gatunek, odmiana, podkładka oraz korelacje między cechami jakościowymi okulantów), klimatycznymi warunkami indukcji i stymulacji wzrost pędów syleptycznych (temperatura i wilgotność powietrza oraz podłoża) oraz czynnikami technologicznymi, takimi jak sposoby rozmnażania, metody agrotechniczne i stosowanie syntetycznych bioregulatorów.

18

Preliminary results on ex-vitro conversion of encapsulated somatic embryos of Citrus reticulata Blanco (cv. Mandarino Tardivo di Ciaculli)

67%

Germana M. A., Micheli M., Standardi A.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2005

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tom 47

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nr 1

19

Charakterystyka wybranych cech roslinnosci drzewiastej na terenach rekultywowanych oraz pozostawionych procesowi sukcesji na przykladzie powierzchni badawczych na wyrobisku kopalni piasku 'Szczakowa'

67%

Pietrzykowski M.

Acta Agraria et Silvestria. Series Silvestris

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2005

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tom 43

3-26

The paper presents the characteristics of arborescent vegetation from succession and of tree sites introduced during the process of reclaim in the area of the Szczakowa sand mine excavation. Arborescent communities from succession consisting of Scotch pine (Pinus sylvestris L.) and common birch (Betula pendula Roth) were formed in a biogroup structure which could be used in the reclaim process. The nutrient content and length of Scotch pine needles indicate appropriate site conditions for this species in both area categories in the sand mine excavation. The effect of fertilization, resulting in a higher nutrient supply in Scotch pine needles, is evident only in the youngest group from the reclaimed areas. Heavy metal content in pine needles indicates an industrial impact on the reconstructed ecosystem in this region.

20

Effect of phenolics from woody plants on activity of grain aphid oxidases

67%

Chrzanowski G., Leszczynski B., Sempruch C., Sytykiewicz H., Sprawka I.

Pestycydy

|

2009

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nr 1-4

63-70

Changes in activity of the grain aphid peroxidase (Px) and polyphenol oxidase (PPO) towards phenolics isolated from leaves of black currant, sour cherry and walnut were examined. Slight increase in activity of peroxidase was found within insect tissues after 24 h of walnut extract treatment, whereas black currant and sour cherry strongly inhibited activity of this enzyme. Later on, the walnut extract reduced activity of the enzyme, finally about 30%. The other extracts showed slight changes in Px activity. The grain aphid’s polyphenol oxidase was stimulated during the first 24 h of the experiment. Further treatment with the phenolics extracts reduced activity of the grain aphid polyphenol oxidase. Generally, phenolics isolated from the black currant and sour cherry were more effective in reducing activity of the aphid peroxidase, whereas phenolics from walnut reduced the polyphenol oxidase activity. Possible application of the phenolics isolated from the woody plants as modern biopesticides towards the grain aphid is discussed.

Ograniczanie wyników

The 5th conference of the section of woody plant diseases of the Polish Phytopathological Society

Immunolocalization and in vitro cryoprotective activity of PCA60: a peach dehydrin

The occurrence of polyprenols in seeds and leaves of woody plants

Environmental regulation and physiological basis of freezing tolerance in woody plants

Forest tree research in post genomic era. Introduction to systems biology of broadleaves

Ecological strategy at cell size level to respond to stressed environments

Selective foraging on tree and shrub species by the European beaver Castor fiber in lowland and highland habitats in Western Poland

Melampsoridium hiratsukanum - invasive rust species in Lithuania, and its co-occurrence with eriophylid mite

Population structure and regeneration status of most abundant medicinal woody plants in Mabira Central Forest Reserve management zones

Black cherry (Prunus serotina) invasion in a Scots pine forest: relationships between soil properties and vegetation

Effects of environmental variation and spatial distance on the beta diversity of woody plant functional groups in a tropical forest

Communities of mites (Acari) in litter and soil under the invasive red oak (Quercus rubra L.) and native pedunculate oak (Q. robur L.)

Rubus maximus (Rosaceae) found also in Poland

Assessment of floral organs state of Tilia genus representatives under environment pollution conditions caused by emissions of Prydniprovska Thermal Power Plant, Dnipropetrovsk city

Hare and vole browsing preferences during winter

The roles of small rodents in creating patchy environments

Factors influencing lateral-branch formation in woody plants

Preliminary results on ex-vitro conversion of encapsulated somatic embryos of Citrus reticulata Blanco (cv. Mandarino Tardivo di Ciaculli)

Charakterystyka wybranych cech roslinnosci drzewiastej na terenach rekultywowanych oraz pozostawionych procesowi sukcesji na przykladzie powierzchni badawczych na wyrobisku kopalni piasku 'Szczakowa'

Effect of phenolics from woody plants on activity of grain aphid oxidases