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Tytuł:
Using high-resolution profiling of transcripts to understand early drought stress signalling events
Autorzy:
Bechtold, U.
Ott, S.
Wild, D.
Buchanan-Wollaston, V.
Rand, D.
Beynon, J.
Smirnoff, N.
Mullineaux, P.
Powiązania:
https://bibliotekanauki.pl/articles/80355.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
crop production
drought stress
gene expression
drought tolerance
Arabidopsis
metabolic change
physiological change
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differential transcriptomic analysis by RNA-seq of GSNO-responsive genes between Arabidopsis roots and leaves
Autorzy:
Begara-Morales, J.
Sanchez-Calvo, B.
Luque, F.
Laterrier, M.
Valderrama, R.
Mata-Perez, C.
Padilla, M.
Carreras, A.
Corpas, F.
Barroso, J.
Powiązania:
https://bibliotekanauki.pl/articles/81065.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
transcriptome
RNA sequence
S-nitrosoglutathione
nitric oxide
stress condition
physiological condition
gene expression
root
leaf
Arabidopsis
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physiological and biochemicals changes modulated by seeds’ priming of lentil (Lens culinaris L.) under salt stress at germination stage
Autorzy:
Bouallègue, A.
Souissi, F.
Nouairi, I.
Souibgui, M.
Abbes, Z.
Mhadhbi, H.
Powiązania:
https://bibliotekanauki.pl/articles/12304629.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
lentil
Lens culinaris
seed priming
physiological change
biochemical change
antioxidant enzyme
germination
salinity
salt stress
Opis:
Seed priming is one of the potential physiological approaches to enhance the seed germination under the salinity stress. The present study examined the role of two seed priming molecules: salicylic acid (SA) and hydrogen peroxide (H2O2), in enhancing the salt tolerance of lentil seeds at germination stage. Salinity stress caused significant decrease in germination percentage and primary root elongation. This decrease was associated with significant increase in lipid peroxidation and total lipid (TL) contents in embryonic axis. The catalase (CAT), guaiacol peroxydase (GPOX) and superoxide dismutase (SOD) activities remained unchanged or decreased significantly under the influence of salt stress, in both embryonic axis and cotyledons. Starch mobilization was not affected by the salt stress. The two priming treatments effectively alleviated the negative effects of salinity stress. SA and H2O2 applications after dose optimization resulted in a significant enhancement of germination percentage and primary root elongation. No significant changes in starch, soluble sugars contents and SOD activity were detected following SA and H2O2 treatments. Seed priming treatments triggered the activities of GPOX and CAT and caused the reduction in lipid peroxidation, especially in embryonic axis. TL content and especially the fatty acid C18:3 increased after SA applications. Better performance under salt stress of primed lentil seeds was associated with lower lipid peroxidation, and activation of enzymatic antioxidative defense system. Obtained results confirm the potential for using SA and H2O2 to improve germination and plant growth under salt stress conditions.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 5; 27-38
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reakcje fizjologiczne i behawioralno-poznawcze dzieci w młodszym wieku szkolnym w sytuacjach stresowych
Physiological and behavioural – cognitive reactions of younger school-age children in stressful situations
Autorzy:
Cywińska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2098489.pdf
Data publikacji:
2021-12-31
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
stres
negatywne emocje
reakcje fizjologiczne
reakcje behawioralnopoznawcze
model reakcji na stres Janusza Reykowskiego
transakcyjna teoria stresu Richarda S. Lazarusa i Susan Folkman
dzieci w młodszym wieku szkolnym
stress
negative emotions
physiological reactions
behavioural-cognitive reactions
Janusz Reykowski's model of reactions to stress
transactional theory of stress and coping by Richard S. Lazarus and Susan Folkman
children at younger school age
Opis:
Stres i związane z nim negatywne emocje wywołują określone reakcje fizjologiczne i behawioralno-poznawcze u jednostek, rzutujące na ich funkcjonowanie w różnych obszarach życia. W artykule - na podstawie badań własnych  analiza tychże reakcji została odniesiona do dzieci w młodszym wieku szkolnym: uczniów trzecich klas szkoły podstawowej, ich matek oraz nauczycieli i wkomponowana w kontekst środowiska rodzinnego, szkolnego i rówieśniczego wspomnianych dzieci.
Stress and negative emotions connected with it evoke specific physiological and behavioural-cognitive reactions in individuals, which affect their functioning in various areas of life. The author studied and analyzed these reactions with respect to children of younger school age - third graders of primary school, their mothers and teachers. The analysis presented in the article is integrated into the context of family, school and peer environment of the children in question.
Źródło:
Forum Pedagogiczne; 2021, 11, 2; 113-129
2083-6325
Pojawia się w:
Forum Pedagogiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stress Coping Strategies for 8- and 9-year-old Children
Strategie radzenia sobie ze stresem dzieci 8- i 9-letnich
Autorzy:
Cywińska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/1071073.pdf
Data publikacji:
2020-06-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
stress
resistance to stress
children’s physiological and behavioral reactions to stress
problem-focused coping strategies
emotion-focused coping strategies
coping strategies for children in early school age
Opis:
Stress is an integral part of our lives. It also applies to our childhood. That is why it is so important to know how children cope with stress (how they learn coping strategies) and to equip them with the skill set to cope constructively with stressful situations throughout life. This article describes strategies for coping with stress that are characteristic for children at the end of early school education. They have been identified in the course of my own research aimed at characterizing child stress and relate to a fragment of research activities aimed at 8- and 9-year-old children. The research established that in some children the developmental process of coping with stress has started: children look for, investigate, and think how to cope with difficulties. In this struggle, however, they focus on people ho could be a source of support for them in coping with stressful situations. Among children’s stress coping strategies, an important role is also played by emotionally focused strategies, which are aimed at reducing negative emotions and arousing positive emotions.
Źródło:
Studia Edukacyjne; 2020, 57; 7-15
1233-6688
Pojawia się w:
Studia Edukacyjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Ergonomic and Occupational Health-Related Problems Among Female Prawn Seed Collectors of Sunderbans, West Bengal, India
Autorzy:
Das, B.
Ghosh, T.
Gangopadhyay, S.
Powiązania:
https://bibliotekanauki.pl/articles/91151.pdf
Data publikacji:
2012
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
musculoskeletal disorders
physiological stress
prawn seed collectors
hand grip strength
rapid entire body assessment (REBA)
Opis:
Sixty female prawn seed collectors and 60 female control subjects from Sajenakhali and Sandeshkhali blocks of Sunderbans, West Bengal, India, were randomly selected to evaluate and compare musculoskeletal disorders and physiological stress. The control group was engaged in domestic work involving minimum handintensive activities. The modified Nordic musculoskeletal questionnaire and rapid entire body assessmentwere used. Most subjects suffered from discomfort in different body parts, especially in the lower back (98%), knees (88%), shoulders (75%), ankles (70%) and feet (67%). This study reveals that female prawn seed collectors suffer from significant physiological load and extreme physiological stress due to prolonged working hours in a standing posture and excessive work pressure. Consequently, all these factors affect female prawn seed collectors’ health and work performance.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2012, 18, 4; 531-540
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of occupational health problems and physiological stress among the brick field workers of West Bengal, India
Autorzy:
Das, Banibrata
Powiązania:
https://bibliotekanauki.pl/articles/2178850.pdf
Data publikacji:
2014-06-21
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
brick field workers
physiological stress
occupational health problems
thermal stress
lung function values
hand-grip strength
Opis:
Objectives: The brick field industry is one of the oldest industries in India, which employs a large number of workers of poor socioeconomic status. The main aim of the present investigation is i) to determine the prevalence of musculoskeletal disorders among brick field workers, ii) to determine the prevalence of respiratory disorders and physiological stress among brick field workers compared to control workers. Material and Methods: For this study, a total of 220 brick field workers and 130 control subjects were selected randomly. The control subjects were mainly involved in hand-intensive jobs. The Modified Nordic Questionnaire was applied to assess the discomfort felt among both groups of workers. Thermal stress was also assessed by measuring the WBGT index. The pulmonary functions were checked using the spirometry. Physiological assessment of the workload was carried out by recording the heart rate and blood pressure of the workers prior to work and just after work in the field. Results: Brick field workers suffered from pain especially in the lower back (98%), hands (93%), knees (86%), wrists (85%), shoulders (76%) and neck (65%). Among the brick-making activities, brick field workers felt discomfort during spading for mud collection (98%), carrying bricks (95%) and molding (87%). The results showed a significantly lower p value < 0.001 in FVC, FEV₁, FEV₁/FVC ratio and PEFR in brick field workers compared to the control group. The post-activity heart rate of the brick field workers was 148.6 beats/min, whereas the systolic and diastolic blood pressure results were 152.8 and 78.5 mm/Hg, respectively. Conclusions: This study concludes that health of the brick field workers was highly affected due to working in unhealthy working conditions for a long period of time.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2014, 27, 3; 413-425
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurements of physiological parameters to evaluate in vitro selected Alyssum lines
Autorzy:
Hanus-Fajerska, E.
Muszynska, E.
Kozminska, A.
Kolton, A.
Augustynowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/80490.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
plant cell
metabolism
heavy metal
stress
Alyssum montanum
physiological parameter
micropropagation
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Test of Firefighter’s Turnout Gear in Hot and Humid Air Exposure
Autorzy:
Holmer, I.
Kuklane, K.
Gao, C.
Powiązania:
https://bibliotekanauki.pl/articles/90221.pdf
Data publikacji:
2006
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
body temperature
heat stress
physiological strain
protective clothing
odzież ochronna
straż pożarna
pożar
temperatura powietrza
temperatura ciała
stres
zagrożenia zawodowe
strażak
Opis:
Five students of a rescue training school cycled at 50 W for 20 min at 20 oC before walking at 5 km/hr up to 30 min in a climatic chamber at 55 oC and 30% relative humidity. 4 different types of clothing ensembles differing in terms of thickness and thermal insulation value were tested on separate days. All subjects completed 28–30 min in light clothing, but quit after 20–27 min in 3 firefighter ensembles due to a rectal temperature of 39 oC or subjective fatigue. No difference in the evolution of mean skin or rectal temperature was seen for the 3 turnout ensembles. Sweat production amounted to about 1000 g in the turnout gears of which less than 20% evaporated. It was concluded that the small differences between the turnout gears in terms of design, thickness and insulation value had no effect on the resulting heat physiological strain for the given experimental conditions.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2006, 12, 3; 297-305
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphological and physiological characterization of the delta-psaL mutant of cyanobacterium Synechocystis PCC6803
Autorzy:
Klodawska, K.
Kis, M.
Malec, P.
Kovacs, L.
Gombos, Z.
Strzalka, K.
Powiązania:
https://bibliotekanauki.pl/articles/81106.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
Cyanoprokaryota
prokaryotic organism
photosynthesis
photosystem
thylakoid membrane
plastoquinone
plastocyanin
cytochrome C
biotic stress
abiotic stress
Synechocystis
delta-psaL mutant
physiological characteristics
morphological characteristics
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physiological reaction of Phalaenopsis x hybridum ‘Innocence’ on Pseudococcus longispinus (Targoni Tozetti) feeding
Fizjologiczna reakcja storczyka Phalaenopsis x hybridum ‘Innocence’ na żerowanie czerwca Pseudococcus longispinus (Targoni Tozetti)
Autorzy:
Kmieć, K.
Kot, I.
Rubinowska, K.
Łagowska, B.
Golan, K.
Górska-Drabik, E.
Powiązania:
https://bibliotekanauki.pl/articles/11542911.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
physiological reaction
Phalaenopsis x hybridus
Innocence cultivar
ornamental plant
Pseudococcus longispinus
feeding
biotic stress
moth
orchid
antioxidant
Opis:
The physiological response of Phalaenopsis × hybridum ‘Innocence’ to biotic stress caused by Pseudococcus longispinus feeding was investigated. The condition of the cytoplasmic membranes expressed by a value of electrolyte outflow (EL) and TBARS and the activity of antioxidative system enzymes: catalase and peroxidase, and the amount of non-enzymatic antioxidant – proline, were determined. The changes in all the analyzed physiological parameters depended on the duration of the pest feeding. The outflow of electrolytes, TBARS content and catalase activity was the highest in the first period of the experiment (after 24-hour of mealybug feeding). Significant increase of peroxidase activity and proline content was noted after 7 days of insects feeding. The values of all analyzed parameters (except EL) demonstrated a decreasing tendency after 14 days of P. longispinus feeding. The observed reaction of P. hybridum ‘Innocence’ testifies to mechanisms triggered with the aim of neutralizing the effects of biotic stress and enabling the normal functioning of the cells in the orchid plants colonized by longtailed mealybug.
Badano fizjologiczną reakcję P. × hybridum ‘Innocence’ na stres biotyczny wywołany żerowaniem P. longispinus. Określono stan błon cytoplazmatycznych wyrażony wartością wypływu elektrolitów (EL) i zawartością substancji reagujących z kwasem tiobarbiturowym (TBARS), a także aktywność enzymów systemu antyoksydacyjnego: katalazy i peroksydazy, oraz ilość nieenzymatycznego antyoksydanta – proliny. Zmiany w wartowniach wszystkich analizowanych parametrów zależały od długości żerowania szkodnika. Wartość EL, zawartość TBARS oraz aktywność katalazy były najwyższe w pierwszym terminie eksperymentu (24-godzinne żerowanie czerwca). W przypadku aktywności peroksydazy i zawartości proliny istotny wzrost notowano dopiero po 7 dniach Żerowania. Po 14 dniach od zasiedlenia storczyków wartości wszystkich analizowanych parametrów (wyjątek EL) wykazywały wyraźną tendencję spadkową. Obserwowana reakcja P. hybridum ‘Innocence’ świadczy o uruchomieniu przez rośliną mechanizmów, których zadaniem jest neutralizacja skutków stresu biotycznego i umożliwienie komórkom powrotu do normalnego funkcjonowania.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2014, 13, 3; 85-95
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular and physiological aspects of the role of root hairs during drought stress in barley
Autorzy:
Kwasniewski, M.
Daszkowska-Golec, A.
Chwialkowska, K.
Janiak, A.
Szarejko, I.
Powiązania:
https://bibliotekanauki.pl/articles/80581.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
physiological aspect
molecular aspect
root hair
drought stress
barley
photosynthesis
photosynthetic apparatus
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physiological adaptations to osmotic stress and characterization of a polyethylene glycol-responsive gene in Braya humilis
Autorzy:
Lirong, W.
Pengshan, Z.
Xin, Z.
Xiaopeng, W.
Xiaofei, M.
Yi, L.
Powiązania:
https://bibliotekanauki.pl/articles/58230.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
physiological adaptation
osmotic stress
polyethylene glycol
gene
Braya humilis
drought
expression pattern
Opis:
Braya humilis (Brassicaceae) is a widely distributed plant in arid and semi-arid regions of northern Asia. This plant is well adapted to extremely arid conditions and is a promising candidate species to discover novel drought tolerance strategies. However, not much information about the mechanism(s) mediating drought resistance in this species is currently available. Therefore, the present study aimed to characterize the physiological traits and expression patterns of a polyethylene glycol (PEG)-responsive gene in B. humilis responding to different levels of osmotic stress induced by PEG-6000. Several important physiological parameters were examined, including the levels of relative water content, soluble protein, malondialdehyde, and antioxidant enzyme activity. A tolerance threshold between 20 and 30% PEG-6000 was identified for B. humilis. The water status and oxidative damage below this threshold were maintained at a relatively constant level during the 12 h of treatment. However, once the threshold was exceeded, the water status and oxidative damage were obviously affected after treatment for 4 h. The soluble protein results suggest that B. humilis maintains a vigorous resistance to osmotic stress and that it may play a greater role in osmotic regulation at late stages of stress. Moreover, superoxide dismutase and catalase may be important at preventing oxidative damage in plants at early stages of stress, while peroxidase may be more involved in some biological processes that resist osmotic stress at the late stage, especially in severely damaged plants. Furthermore, a PEG-responsive gene, BhCIPK12, was identified by differential display reverse transcription-polymerase chain reaction (PCR), cloned, and characterized by quantitative real-time PCR. We hypothesized that this gene may play an important role in mediating osmotic stress or drought resistance in plants. Altogether, these results provide valuable insights into the mechanism(s) mediating drought tolerance in B. humilis.
Źródło:
Acta Societatis Botanicorum Poloniae; 2016, 85, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of fulvic and humic organic acids and calcium on growth and chlorophyll content of tree species grown under salt stress
Autorzy:
Marosz, A
Powiązania:
https://bibliotekanauki.pl/articles/41691.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
tree species
chlorophyll content
salinity stress
ornamental tree
fulvic organic acid
humic organic acid
calcium
growth
salt
soil erosion
environment pollution
mineral nutrition
plant
physiological process
Opis:
The use of salt to malt ice has definite effects on the environment. Some of these environmental effects are: soil erosion, environmental pollution, changes in mineral nutrition or general destruction of the physiological processes of plants. This use of salt has a negative impact on roadside vegetation and sustainability. The objective of the presented study was to investigate the effects of fulvic and humic organic acids as well as the calcium on growth and chlorophyll content of seven tree species grown under salt stress. Two year old seedlings of – Acer campestre, Aer platanoides, Acer pseudoplatanus, Acer tataricum ssp. ginnala, Ginkgo biloba, Platanus ×hispanica 'Acerifolia' and Tilia cordata were planted to plastic pots (2 dm3 vol). They were planted outdoors in a growing medium compound which had high sphagnum peat, grainy sand and composted pine bark. Salinity stress was maintained by irrigating plants with tap water containing 3.3 g NaCl/L H2O. Different organic fertilizers were used to redce the risk of nutritional stress caused by salinity. Salinity in the growing medium limited the growth of two maple species and littleleaf linden. In other species such A. campestre, A. tataricum ssp. ginnala, G. biloba there were no significant differences when compared to the control group of plants. Severe leaf damage was observed on A. paltanoides where leaf burning was seen on up to 30%of the leaf blade surface. The response to salinity of other species like A. pseudoplatanus, A. tataricum ssp. ginnala, and T. cordata was less evident. Humic organic acids applied alone to the growing medium improved the growth of all the maple species when compared to the control group. A calcium had the best effect on the growth of all tested trees except A. tataricum ssp. ginnala and G. biloba. The chlorophyll content index (CCI) differed according to the growing medium treatment and the species. The total CCI ranged from 9.62 for the control plants P. ×hispanica 'Acerifolia' to 52.64 for G. biloba which had been treated with a calcium. Application of organic fertilizers to the salt treated growing medium increased the CCI in many species.
Źródło:
Dendrobiology; 2009, 62; 47-53
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphological and physiological responses of some halophytes to salinity stress
Autorzy:
Mohammadi, Hamid
Kardan, Javid
Powiązania:
https://bibliotekanauki.pl/articles/763867.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
salinity stress
halophytes
morphological parameters
physiological parameters
Opis:
A pot experiment was conducted to examine whether the morphological and physiological characteristics of some halophytes may be affected by salt stress. For this purpose, a factorial experiment based on randomized complete block design was carried out with three replications. The treatments were some halophytes (Salicornia europaea, Atriplex leucoclada, and Kochia scoparia) and salinity stress levels [Electrical conductivity 0 (Hoagland’s solution), Hoagland’s solution consisting of 100, 200, 300 and 500 mM NaCl]. Among the halophytes tested, Salicornia europaea had significantly higher shoot and root of dry matters compared to the other halophytes in all salt treatments. Salinity stress resulted in an increase in photosynthetic pigments up to 200 mM and thereafter, it decreased in all of the studied plants. Photosynthetic pigments, ranked in a descending order, were high in Kochia scoparia, Salicornia europaea, and Atriplex leucoclada. In addition, salinity stress led to an enhancement in malondialdehyde (MDA) and H2O2. The tolerance of Salicornia europaea under high salinity stress was associated with low MDA and H2O2 contents as well as high contents of photosynthetic pigments. The shoot and root Na+ increased considerably by augmenting the salinity levels in all halophytic plants; however, there was a significant difference among halophytes at higher salinity levels. The shoot K+ decreased by increasing the salinity levels, but K+ partitioning pattern varied among the halophytes. Under saline conditions, the shoot and root Na+/K+ ratio of all halophytes grew. The highest and the lowest of Na+ were observed in Salicornia europaea and Kochia scoparia, respectively. Thus, the Na+/K+ ratio could be considered as an indicator of salt evaluation. Nitrogen, protein content, dry matter digestibility (DMD), and metabolizable energy (ME) were high in Salicornia europaea plants in comparison to other plants at 200–500 mM salinity levels; in contrast, acid detergent fiber (ADF) and netural detergent fiber (NDF) were low. According to the results of this study, the tolerance of halophytes towards NaCl is possibly due to the differences in damage from reactive oxygen species (ROS), especially H2O2, and toxicity to metabolism Na+.
Źródło:
Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia; 2015, 70, 2
2083-3563
0066-2232
Pojawia się w:
Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 31

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