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1

Determination of the response of Gypsophila arrostii Guss. to boron under in vitro conditions

100%

Kavas M. K. , Yorgancilar M.

Journal of Elementology

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2016

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tom 21

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nr 1

EN

In this research, the response of the plant Gypsophila arrostii Guss. to boron (B) under in vitro conditions was examined. The seeds were cultured on MS medium including 0, 10, 20, 40, 80 mg B l-1. Seedlings obtained from germinated seeds and grown in a culture medium for 8 weeks were analyzed. At the end of this period, stem length (cm), root length (cm), plant weight (g) and elemental content (mg kg-1) of the plants were determined. According to the results, the seeds of G. arrostii Guss. could germinate on media with up to 80 mg B l-1, and the seedlings demonstrated an ability to survive, albeit poorly, a dose of boron as high as 80 mg B l-1. In the experiment, the highest stem length (7.5 cm) was obtained from the 20 mg B l-1 treatment and the highest stem fresh weight (0.9 g) and stem dry weight (0.19 g) were measured in the 10 mg B l-1 variant. No significant statistical difference was determined between the boron treatments in terms of root length, root fresh weight and root dry weight. Our evaluation of the elemental content of plants demonstrated that the amount of boron in the root and stem increased parallel to its increase in the growth media. In the 80 mg B l-1 treatment, 601.9 mg kg-1 boron in root and 1,035.4 mg kg-1 boron in stem were determined. Besides, it was discovered that the contents of K, Mg, Zn, Na in root decreased while the contents of P, B, Mn, Cu in root increased in response to the growing amount of boron in the environment. In response to the increasing boron concentrations, the content of K, P, Mn, Cu, Zn and S increased while the amount of Ca, Mg and Na in the plant stem decreased. Consequently, G. arrostii Guss. was found to be a boron hyperaccumulator, collecting boron in tissues (in the roots and stems), in which it resembled some other types of Gypsophilla.

2

ADH expression in aerial-aquatic plants in response to different water environment

88%

Kordyum E. , Kozeko L. , Ovcharenko Y.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

3

Effect of aluminium on plant growth and metabolism.

88%

Mossor-Pietraszewska T.

Acta Biochimica Polonica

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2001

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tom 48

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nr 3

673-686

EN

Aluminium toxicity is one of the major factors that limit plant growth and development in many acid soils. Root cells plasma membrane, particularly of the root apex, seems to be a major target of Al toxicity. However, strong interaction of Al3+, the main Al toxic form, with oxygen donor ligands (proteins, nucleic acids, polysaccharides) results in the inhibition of cell division, cell extension, and transport. Although the identification of Al tolerance genes is under way, the mechanism of their expression remains obscure.Soil chemical factors that limit root growth in acid soils, diminish crop production, include Al, Mn and various cations, and also deficiency or unavailability of Ca, Mg, P, Mo, and Si. These effects are further complicated by interactions of Al with other ions in different plant genotypes and under stress conditions (Foy, 1992). Cytotoxicity of Al has been well documented in plants (Delhaize & Ryan, 1995; Horst et al., 1999; Kollmeier et al., 2000; Marienfeld et al., 2000). It is generally known that plants grown in acid soils due to Al solubility at low pH have reduced root systems and exhibit a variety of nutrient-deficiency symptoms, with a consequent decrease in yield. In many countries with naturally acid soils, which constitute about 40% of world arable soil (LeNoble et al., 1996), Al toxicity is a major agricultural problem, and is intensively studied in plant systems.The effects of aluminium on plant growth, crop yield, uptake and nutrients distribution in vegetative and reproductive parts are still not fully understood. This review discusses recent information on aluminium toxicity with an emphasis on plant response to Al stress.

4

Molecular aspects of plant responses to pathogens

88%

Kuc J.

Acta Physiologiae Plantarum

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1997

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tom 19

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nr 4

EN

Plants respond to infection by accumulating many compounds some of which may function in disease resistance. These include: phytoalexins, antifungal proteins, chitinases, glucanases, esterases, proteaes, phospholipases, lipoxygenases, ribonucleases, peroxidases, phenoloxidases, lignin, callose, hydroxyproline and glycine-rich glycoproteins, phenolic cross-linked polysachcarides, melanin-like pigments, salicylic acid, jasmonic acid, ethylene, peptides, oligosaccharides, hydrogen peroxide and active oxygen species. Though specific avirulence genes, elicitors and elicitor receptors have been reported, the production of defense-related compounds is nonspecific and can be elicited by pathogens, pathogen products and many organics and inorganics. The molecular implications of this specificity/nonspecificity and their significance to disease resistance and practical disease control will be discussed.

5

The involvement of hydrogen peroxide in plant responses to stresses

88%

Kuzniak E. , Urbanek H.

Acta Physiologiae Plantarum

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2000

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tom 22

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nr 2

6

The response of winter wheat plants treatmented with hyaluronic acid to drought stress

75%

Mykhalskyi M. F.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

7

Effect of combined drought and heat stress on heat shock proteins in wheat varieties

75%

Grigorova B. , Vasseva I. , Demirevska K. , Feller U.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

8

Adopting adequate leaching requirement for practical response models of basil to salinity

75%

Babazadeh H. , Tabrizi M. S. , Darvishi H. H.

International Agrophysics

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2016

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tom 30

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nr 3

9

The application of spectrofluorimetric methods for studying the different responses soil drought in triticale and maize plants

75%

Hura T. , Hura K. , Grzesiak M. T.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

10

Response of Berberis thunbergii to heavy metals under urban pollution

75%

Chadzinikolau T. , Kozlowska M. , Mleczek M.

Dendrobiology

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2010

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tom 64

EN

Increasing pollution of the environment causedby heavy metals is becoming a significant problem in developing cities. Species andcultivars of plants for urban plantings shouldexhibit tolerance to these pollutants, andwhat is even more significant, through their absorption they shouldred uce the level of environmental contamination. The aim of the research was to determine whether Berberis thunbergii (DC.), which was grown in the immediate vicinity of roads, developed mechanisms limiting harmful effects of accumulating heavy metals. The mechanism for heavy metal resistance, involving the generation of phytochelatins (PCs), was investigatedin relation to As, Cd, Cr, Co, Cu, Hg, Ni, Pb andZn accumulation. Levels of thiols, i.e. glutathione (GSH) andphytochelatins (PCs), increasedin plants grown in pollutedareas in the city of Poznań in comparison to a residential site (control) and it was related to the activity of phytochelatin synthase (PC-synthase) andthe accumulation of metals. The results indicate that in Berberis thunbergii growing in the polluted urban environment a defense mechanism adapting the plant to potentially adverse conditions was initiated.

11

Chlorophyll fluorescence response of corn seedlings to lead stress

75%

Gogolakova A. , Sestkova E. , Strba P. , Bekesiova B.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

12

Responses of plants to polluted with heavy metals environment: from embryology to genetic differentiation. The continuation of the research nitiated by Professor Romana Czapik

75%

Kwiatkowska M. , Slomka A. , Kuta E.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2016

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tom 58

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nr 1

13

Phenolic compounds level in Galanthus elwesii cultures as a response to in vitro stress

75%

Bach A. , Pawlowska B.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

14

Photoelectrical reactions in Cucurbita pepo L. modified by action potentials induced by electrical and thermal stimuli

75%

Karcz W.

Acta Biologica Silesiana

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1991

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tom 17

15

Expression pattern analysis of P. nil Ohp1, Ohp2 and cpHsc70-2 genes in response to variable light conditions

75%

Stawski K. , Dabrowska G. , Goc A.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

16

Response of two winter wheat cultivars to nitrogen deficiency

75%

Kocon A.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

17

Changes in the properties of membranes and lipoxygenase activity in the roots of Pisum sativum L. in response to the action of hydroxycinnamic acids

75%

Gmerek J. , Politycka B.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

18

Physiological role of phenolic compounds in plant response to stresses

75%

Plazek A. , Dubert F.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

19

Differences in response to drought stress between triticale and maize plants expressed by the leaf gas exchange and spectrofluorimetric methods

75%

Hura T. , Grzesiak M. T. , Hura K. , Grzesiak S. , Rzepka A.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

20

Ultrastructural and antioxidative changes in lupine embryo axes in response to salt stress

75%

Wojtyla L. , Grabsztunowicz M. , Garnczarska M.

Acta Societatis Botanicorum Poloniae

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2013

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tom 82

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nr 4

EN

Embryo axes of lupine (Lupinus luteus L. ‘Mister’) were subjected to 0.1 M NaCl salt stress for 24 and 48 h. The ultrastructure modification and adjustment of antioxidant enzymes activities and izoenzymes profiles were observed. In cells of lupine embryo axes grown for 48 hours in medium with 0.1 M NaCl mitochondria took the forked shape and bulges of the outer mitochondrial membranes appeared. Moreover, the inflating and swelling of rough endoplasmic reticulum (RER) lumen and fragmentation of RER were noticed. The level of H2O2 was higher in salt treated embryo axes after 24 hours and increase of thiobarbituric acid reactive substances was observed after both 24 and 48 h of salt treatment. Native gel electrophoresis showed increased intensities of bands for catalase isozymes in response to salt stress, whereas activity of catalase was higher only in embryo axes grown for 48 h in control conditions. Appearance of two new isoforms of ascorbate peroxidase was observed after 48 h only under control condition, however increased activities were stated for both control and salt-stress condition after 48 h. No changes in isozymes pattern for superoxide dismutase were observed, but significant decrease in superoxide dismutase activity was noticed in relation to time and salt stress. Possible role of these enzymes in salt stress tolerance is discussed. The 0.1 M salt stress is regarded as a middle stress for lupine embryo axes and the efficiency of stress prevention mechanisms is proposed.