Temat: Photosynthesis - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Detection of multi-nutrients deficiency in cereal plants by the use of chlorophyll fluorescence
Autorzy:: Jaszczuk, Zuzanna M.
Bąba, Wojciech
Powiązania:: https://bibliotekanauki.pl/articles/28411656.pdf
Data publikacji:: 2023
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: abiotic stress
JIP test
photosynthesis
Triticum aestivum
Zea mays
Opis:: Nutrient deficiency (ND) stands as a prominent environmental factor that significantly impacts global plant growth and productivity. While numerous methods have been employed for detecting nutrient deficiencies in plants, many of them are invasive, time-consuming, and costly. In contrast, chlorophyll fluorescence (ChlF) signals have emerged as a non-destructive tool for the identification of specific nutrient deficiencies, such as nitrogen (N), phosphorus (P), and potassium (K), across various plant species. In this pioneering study, ChlF measurements were employed for the first time to detect a combination of nutrient deficiencies, including deficiencies in nitrogen and phosphorus (-NP), nitrogen and potassium (-NK), potassium and phosphorus (-KP), and a complete NPK deficiency (-NPK). The experiment was conducted using wheat (Triticum aestivum) and maize (Zea mays) plants, which were grown under controlled laboratory conditions. An optimal hydroponic system was established to facilitate eight experimental conditions, namely: control, -N, -P, -K, -NP, -NK, -KP, and -NPK. Measurements were systematically collected at two-day intervals over a span of 24 days. Our findings demonstrate that chlorophyll fluorescence signals can enable the differentiation of various nutrient deficiencies even prior to the onset of observable symptoms. Furthermore, the examination of chlorophyll fluorescence parameters enables us not only to identify a singular macronutrient deficiency but also to detect multiple macronutrient deficiencies concurrently in a plant.
Źródło:: Journal of Water and Land Development; 2023, 59; 224--233
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Does melatonin improve the yield attributes of field-droughted banana under Egyptian semi-arid conditions?
Autorzy:: Hassan, Islam F.
Gaballah, Maybelle S.
Ogbaga, Chukwuma C.
Murad, Soha A.
Brysiewicz, Adam
Bakr, Basem M.M.
Mira, Amany
Alam-Eldein, Shamel M.
Powiązania:: https://bibliotekanauki.pl/articles/2073748.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: banana
deficit irrigation
evapotranspiration
melatonin
photosynthesis
Opis:: Drought is regarded as one of the environmental constraints threatening agriculture worldwide. Melatonin is a pleiotropic molecule prevalent in plants capable of promoting plant endogenous resilience to many environmental challenges including drought. Banana is an important staple food consumed in developing countries especially in Africa. In this research, we studied the role of melatonin in the growth of bananas subjected to drought under the Egyptian semi-arid conditions. To achieve this objective, a field experiment on banana (Musa spp., cv. Williams) mother plants and first ratoon was conducted on a private farm for two seasons - 2019 and 2020. Three irrigation treatments, 100, 90 and 80% irrigation water requirements (IWR) were used in conjunction with four concentrations of melatonin as a foliar spray (0 μmol, 40 μmol, 60 μmol, and 80 μmol) to determine the effect of both treatments on banana plant performance under drought. The results showed that there was a substantial difference between treatments, with the foliar application of melatonin at 80 μmol concentration improving most of the yield attributes, relative water content, total chlorophyll and proline with water deficit. However, the foliar application of the molecule lowered the biochemical characteristics mostly at 80% IWR under the Egyptian semi-arid conditions. Overall, there was a concentration-dependent response with regards to IWR for the two seasons 2019 and 2020.
Źródło:: Journal of Water and Land Development; 2022, 52; 221--231
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Early detection of phosphorus deficiency stress in cucumber at the cellular level using chlorophyll fluorescence signals
Autorzy:: Sieczko, Leszek
Dąbrowski, Piotr
Kowalczyk, Katarzyna
Gajc-Wolska, Janina
Borucki, Wojciech
Janaszek-Mańkowska, Monika
Kowalczyk, Waldemar
Farci, Domenica
Kalaji, Hazem M.
Powiązania:: https://bibliotekanauki.pl/articles/2203572.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: abiotic stress
chlorophyll fluorescence
cucumber
JIP test
multidimensional statistical analysis
photosynthesis
Opis:: Abiotic stressors contribute to growth restriction and developmental disorders in plants. Early detection of the first signs of changes in plant functioning is very important. The objective of this study was to identify chlorophyll fluorescence parameters that change under phosphorus deficiency stress in cucumber. In this work, a trail to study the early changes caused by phosphorus deficiency in cucumber plants by analysing their photosynthetic performance is presented. Chlorophyll-a fluorescence (ChF) parameters were measured every 7 days for a period of 28 days. Measurements were made separately on young and old leaves and on cucumber fruit. Parameters that decreased during the stress were: p2G, PI abs, PI total, REo/CSo, and TRo/CSo. P deficiency decreased total electron carriers per RC (ECo/RC), yields (TRo/ABS (Fv/Fm), ETo/TRo, REo/ETo, ETo/ABS and REo/ABS), fluxes (REo/RC and REo/CSo) and fractional reduction of PSI end electron acceptors, and damaged all photochemical and non-photochemical redox reactions. Principal component analysis revealed a group of ChF parameters that may indicate early phosphorus deficiency in cucumber plants. Our results are used in the discovery of sensitive bioindicators of phosphorus deficiency in cucumber plants. Most JIP test parameters are linked to mathematical equations, so we recommend using of advanced statistical tools, such as principal component analysis, which should be considered very useful for stress identification. It has also been shown to be more effective in multivariate methods compared to univariate statistical methods was demonstrated.
Źródło:: Journal of Water and Land Development; 2022, Special Issue; 176--186
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Hygrophilous old-growth forest lichens are highly capable of instantaneous photosynthesis activation after short-term desiccation stress
Autorzy:: Osyczka, P.
Powiązania:: https://bibliotekanauki.pl/articles/2142054.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: bioindicators
chlorophyll fluorescence
lichen ecophysiology
lichenized fungi
old-growth forest lichens
photosynthesis activation rate
lichen photobiont properties
Opis:: The vitality of lichens and their growth depend on the physiological status of both the fungal and algal partner. Many epiphytic lichens demonstrate high specificity to a habitat type and hygrophilous species are, as a rule, confined to close-to-natural forest complexes. Tolerance to desiccation stress and the rate of photosynthesis activation upon thallus hydration vary between species. Analyzes of chlorophyll fluorescence and photosynthesis efficiency have been widely applied to determine the viability of lichens. The aim of this study was to determine the activation photosynthesis rate upon hydration in epiphytic lichens exposed to short-term desiccation stress and to find potential links between their activation pattern and ecological properties. The results proved that even highly sensitive hygrophilous lichens, i.e., Cetrelia cetrarioides, Lobaria pulmonaria, Menegazzia terebrata, do not exhibit any delay in the restart of the photosynthesis process, compared to mesophytic or xerophytic ones. All examined lichens achieved nearly 100% of their maximum photosynthetic efficiency just one hour after they had been supplied with a relatively small quantity of water. Moreover, the increase in photosynthesis efficiency, measured at 20-minute intervals upon hydration, started from a relatively high level. In addition, the differences in the content of photosynthetic pigments and water holding capacity between species did not affect the general pattern of activation, which is comparable across various lichens. It can be concluded that healthy hygrophilous lichens do not require long hydration time to regain a high level of photosynthesis efficiency after a short rainless period. This fact supports the idea of applying chlorophyll fluorescence analysis in the field to assess vitality of lichens and the condition of their natural habitat.
Źródło:: Acta Biologica Cracoviensia. Series Botanica; 2022, 64, 1; 15-25
0001-5296
Pojawia się w:: Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Photosynthesis, yielding and quality of pea seeds depending on the row spacing and sowing density
Autorzy:: Tobiasz-Salach, Renata E.
Jańczak-Pieniążek, Marta
Migut, Dagmara
Bobrecka-Jamro, Dorota
Stadnik, Barbara
Kačániová, Miroslava
Powiązania:: https://bibliotekanauki.pl/articles/2203565.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: Pisum sativum L.
photosynthesis efficiency
protein content
row spacing
sowing density
Opis:: Pea is one of the most important legumes grown in the world. The seeds are used for food production and animal feed. The problem with its cultivation is the low yield and sensitivity to the course of the weather. The important factor is to determine the optimal sowing rate and row spacing, especially for new cultivars of pea. Therefore, research was undertaken to assess the effect of row spacing and sowing density on selected physiological parameters, yielding, and structural elements of peas cv. ‘Batuta’ in Poland. The results of the research showed that the row spacing and sowing density determine the values of plant physiological parameters, yield of pea seeds and protein content. The increase in plant density in the canopy caused a decrease in the measured parameters of chlorophyll fluorescence, such as maximum quantum yield of photosystem II (Fv/Fm) and maximum quantum yield of primary photochemistry (Fv/F0) and performance index (PI). The leaf area index (LAI) was lower with a wider row spacing. Row spacing and plant density determined yield of pea seeds, number of pods and seeds per plant and weight of seeds per plant. Wider row spacing resulted in a decrease in the protein content in seeds, while an increase in sowing density from 70 to 110 m2 caused its increase. The course of the weather during the vegetation period of plants significantly influenced the obtained results.
Źródło:: Journal of Water and Land Development; 2022, Special Issue; 146--155
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Plants take action to mitigate salt stress: Ask microbe for help, phytohormones, and genetic approaches
Autorzy:: Hewedy, Omar A.
Mahmoud, Ghada Abd-Elmonse
Elshafey, Naglaa F.
Khamis, Galal
Karkour, Ali M.
Abdel Lateif, Khalid S.
Amin, Basma H.
Chiab, Nour
El-Taher, Ahmed M.
Elsheery, Nabil I.
Powiązania:: https://bibliotekanauki.pl/articles/2174285.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: Bacillus
ion homeostasis
osmoprotectants
osmotic stress
photosynthesis
ROS scavenging
Opis:: Global agriculture is a pivotal activity performed by various communities worldwide to produce essential human food needs. Plant productivity is limited by several factors, such as salinity, water scarcity, and heat stress. Salinity significantly causes short or long-term impacts on the plant photosynthesis mechanisms by reducing the photosynthetic rate of CO2 assimilation and limiting the stomatal conductance. Moreover, disturbing the plant water status imbalance causes plant growth inhibition. Up-regulation of several plant phytohormones occurs in response to increasing soil salt concentration. In addition, there are different physiological and biochemical mechanisms of salt tolerance, including ion transport, uptake, homeostasis, synthesis of antioxidant enzymes, and osmoprotectants. Besides that, microorganisms proved their ability to increase plant tolerance, Bacillus spp. represents the dominant bacteria of the rhizosphere zone, characterised as harmless microbes with extraordinary abilities to synthesise many chemical compounds to support plants in confronting salinity stress. In addition, applying arbuscular mycorrhizal fungi (AMF) is a promising method to decrease salinity-induced plant damage as it could enhance the growth rate relative to water content. In addition, there is a demand to search for new salt-tolerant crops with more yield and adaptation to unfavourable environmental conditions. The negative impact of salinity on plant growth and productivity, photosynthesis, stomatal conductance, and changes in plant phytohormones biosynthesis, including abscisic acid and salicylic acid, jasmonic acid, ethylene, cytokinins, gibberellins, and brassinosteroids was discussed in this review. The mechanisms evolved to adapt and/or survive the plants, including ion homeostasis, antioxidants, and osmoprotectants biosynthesis, and the microbial mitigate salt stress. In addition, there are modern approaches to apply innovative methods to modify plants to tolerate salinity, especially in the essential crops producing probable yield with a notable result for further optimisation and investigations.
Źródło:: Journal of Water and Land Development; 2022, 55; 1--16
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Leaf Area Formation and Photosynthetic Activity of Sunflower Plants Depending on Fertilizers and Growth Regulators
Autorzy:: Domaratskyi, Yevhenii
Powiązania:: https://bibliotekanauki.pl/articles/1838274.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sunflower
photosynthesis
photosynthetic potential
chlorophyll
fractional composition
assimilation surface
Opis:: The study presents scientific substantiation and determination of the dependence of leaf area formation and photosynthetic activity of sunflower plants under the influence of fertilizers and growth regulators. The field research was conducted in 2015-2017 in the fields of the Voznesensk district in the Mykolaiv region, Ukraine (GPS: 47.630518, 32.078974). The soil of the research field is common black soil with little humus accumulation and the content of hydrolyzed nitrogen – 1.5-1.8; the content of highly absorbable phosphorous – 4.5-7.0 and the content of exchangeable potassium – 12-15 mg/100 g of soil. The research was carried out by a two-factor scheme, where Factor A – the rate of mineral nutrition (the test plot without fertilizers; N30P45; N60P90); and Factor В – foliar feeding with the Wuxal Microplant, Khelafit Combi and Fitomare preparations. The weather conditions in the years of the research were typical for this growing zone. It was established that the year 2017 was the least favorable with excessively low soil moisture and high temperature regime for growing the crop, and the weather conditions of 2015 and 2016 were the most favorable for cultivating sunflower. The research made it possible to determine that fertilizers combined with multifunctional preparations had a considerable impact on the leaf area and photosynthetic potential of agrocenosis. It proves that foliar feeding of sunflower plants at the stage of 6-8 true leaves with growth regulators contributed not only to a change in the total chlorophyll content, but also to its fractional composition. In all the cases there was a major increase in the content of the fraction "а". In particular, the maximal increase in this fraction was 90%, whereas the difference did not exceed 76% in the fraction "b". Under nonfertilized conditions these indices were 48 and 13%, respectively.
Źródło:: Journal of Ecological Engineering; 2021, 22, 6; 99-105
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Leaf Area Formation and Photosynthetic Activity of Sunflower Plants Depending on Fertilizers and Growth Regulators
Autorzy:: Domaratskyi, Yevhenii
Powiązania:: https://bibliotekanauki.pl/articles/1838384.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sunflower
photosynthesis
photosynthetic potential
chlorophyll
fractional composition
assimilation surface
Opis:: The study presents scientific substantiation and determination of the dependence of leaf area formation and photosynthetic activity of sunflower plants under the influence of fertilizers and growth regulators. The field research was conducted in 2015-2017 in the fields of the Voznesensk district in the Mykolaiv region, Ukraine (GPS: 47.630518, 32.078974). The soil of the research field is common black soil with little humus accumulation and the content of hydrolyzed nitrogen – 1.5-1.8; the content of highly absorbable phosphorous – 4.5-7.0 and the content of exchangeable potassium – 12-15 mg/100 g of soil. The research was carried out by a two-factor scheme, where Factor A – the rate of mineral nutrition (the test plot without fertilizers; N30P45; N60P90); and Factor В – foliar feeding with the Wuxal Microplant, Khelafit Combi and Fitomare preparations. The weather conditions in the years of the research were typical for this growing zone. It was established that the year 2017 was the least favorable with excessively low soil moisture and high temperature regime for growing the crop, and the weather conditions of 2015 and 2016 were the most favorable for cultivating sunflower. The research made it possible to determine that fertilizers combined with multifunctional preparations had a considerable impact on the leaf area and photosynthetic potential of agrocenosis. It proves that foliar feeding of sunflower plants at the stage of 6-8 true leaves with growth regulators contributed not only to a change in the total chlorophyll content, but also to its fractional composition. In all the cases there was a major increase in the content of the fraction "а". In particular, the maximal increase in this fraction was 90%, whereas the difference did not exceed 76% in the fraction "b". Under nonfertilized conditions these indices were 48 and 13%, respectively.
Źródło:: Journal of Ecological Engineering; 2021, 22, 6; 99-105
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Ocena linii wsobnych kapusty głowiastej białej pod względem przydatności do hodowli odpornościowej na stres suszy.
Evaluation of the head cabbage inbreed lines for the breeding for the drought stress resistance.
Autorzy:: Kamiński, Piotr
Treder, Waldemar
Klamkowski, Krzysztof
Powiązania:: https://bibliotekanauki.pl/articles/2199407.pdf
Data publikacji:: 2021-09-29
Wydawca:: Instytut Hodowli i Aklimatyzacji Roślin
Tematy:: cechy morfologiczne i użytkowe
fotosynteza
hodowla
kapusta głowiasta
linie wsobne
stres suszy
transpiracja
morphological and agroeconomical traits
photosynthesis
breeding
head cabbage
inbreed lines
drought stress
transpiration
Opis:: Dwanaście linii wsobnych kapusty głowiastej białej otrzymanych w Pracowni Genetyki i Hodowli Roślin Warzywnych, Zakład Hodowli Roślin Ogrodniczych Instytutu Ogrodnictwa-PIB zostało poddanych ocenie pod względem cech morfologicznych i agro-ekonomicznych, dynamice wzrostu systemu korzeniowego, intensywności fotosyntezy oraz transpiracji mających wpływ na ich odporność na stres suszy. Badania prowadzono w warunkach kontrolowanych w fazie wiązania główek jak również w fazie dojrzałości zbiorczej na polu doświadczalnym. Wszystkie linie wsobne odznaczały się wysoką wartością hodowlaną oraz wyrównaniem, były również silnie zróżnicowane pod względem badanych cech. Linie wsobne kapusty różniły się pod względem reakcji na stres suszy. Genotypy o silnej dynamice rozwoju systemu korzeniowego, mniejszych liściach oraz kompaktowym pokroju roślin, które odznaczały się silniejszym ograniczeniem fotosyntezy oraz transpiracji w warunkach stresu suszy, mogą być wykorzystywane do hodowli odpornościowej. Wysoki poziom zróżnicowania linii wsobnych umożliwia uzyskanie efektu heterozji przy tworzeniu nowych eksperymentalnych mieszańców F1 lepiej przystosowanych do niekorzystnych warunków środowiska w tym na stres niedoboru wody.
Twelve head cabbage inbred lines obtained at the Research Institute of Horticulture, Department of Genetics and Breeding, Skierniewice, Poland were evaluated in respect to the morphological and agro economical characters, dynamic of the root development, photosynthesis and transpiration activity affecting their resistance for the drought stress. Cabbage lines were highly diversified in respect to their characters with desired morphological traits. Different reactions for drought stress between the lines was recorded in controlled conditions and at the field. Lines with high dynamics of root development, smaller leaf size, compact shape of plant, with stronger transpiration and photosynthesis reaction with be probably less susceptible to drought stress. High level of diversity of cabbage inbred lines reflects their potential for the breeding of the new F1 cultivars with better adaptation for the abiotic stresses in the future.
Źródło:: Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2021, 294; 83-92
0373-7837
2657-8913
Pojawia się w:: Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Physiological acclimation of Dicranostigma henanensis to soil drought stress and rewatering
Autorzy:: Wang, N.
Chen, H.
Wang, L.
Powiązania:: https://bibliotekanauki.pl/articles/2130560.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: Dicranostigma henanensis
drought stress
physiological changes
photosynthesis
rewatering
Opis:: e adaptability of plants to drought not only includes their ability to resist drought stress, but also their ability to recover aer stress is relieved. In this study, a weighting method was used to control the soil water content to produce a soil water stress gradient. e effects of drought and rewatering on the changes in osmotic adjustment substance content, antioxidant enzyme activity, and photosynthetic characteristics of potted Dicranostigma henanensis seedlings were measured on Day 28 aer the imposition of watering treatments and Day 7 aer rewatering. During the drought stress process, the relative electrical conductivity, thiobarbituric acid, water use efficiency, and proline content displayed a continuously increasing trend. Further, the net photosynthetic rate, stomatal conductance, and transpiration rate constantly decreased, while the chlorophyll content first increased and then decreased. Aer rehydration, superoxide dismutase (EC 1.15.1.1) activity and photosynthetic parameters quickly recovered to the CK level (soil moisture is 75%–80% of the maximum water holding capacity in the field), indicating that D. henanensis plants have a strong ability to repair the damage caused by drought stress. In particular, the photosynthetic machinery may have sophisticated regulation and repair mechanisms, which may be associated with its stable photosystem. Collectively, our findings demonstrate that the D. henanensis plant has a strong ability to adapt to arid environments, and therefore could be an excellent ornamental flower for landscaping in arid and semiarid areas.
Źródło:: Acta Societatis Botanicorum Poloniae; 2021, 90
0001-6977
2083-9480
Pojawia się w:: Acta Societatis Botanicorum Poloniae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Resistance of mosses to drying, measured by the intensity of gas exchange and the content of malate and citrate
Autorzy:: Rzepka, Andrzej
Szarek, Wioleta
Powiązania:: https://bibliotekanauki.pl/articles/2173118.pdf
Data publikacji:: 2021-11-20
Wydawca:: Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:: dehydration and rehydration
enzymatic activity
photosynthesis
respiration
Opis:: Desiccation tolerance, the ability to lose virtually all of its free intracellular water and then restore normal function when rehydrated, is one of the most remarkable features of bryophytes. The aim of the study was to determine the resistance of two species of Plagiomnium undulatum (Hedw.) T.J.Kop. and Polytrichum commune Hedw. on drying to 50% relative water content of the air and rehydration. Changes in the intensity of photosynthesis and respiration as well as the content of malate and citrate in leafy moss stems were analysed. P. commune gametophores showed greater resistance to drought stress than P. undulatum. In both species, photosynthesis was much more sensitive to drought than respiration. Changes in the content of malate and citrate indicated a high plasticity of moss metabolism in conditions of water shortage and may be one of many important elements of the adaptation strategy to water deficit. The reactions of the tested mosses to dehydration and rehydration confirmed their adaptation to specific land conditions.
Źródło:: Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2021, 6; 109-124
2543-8832
2545-0999
Pojawia się w:: Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The influence of lead compounds on selected morphological features and the physiological processes of Zea mays L.
Autorzy:: Bloem, Elke
Ciaranek, Jowita
Powiązania:: https://bibliotekanauki.pl/articles/2173110.pdf
Data publikacji:: 2021-11-19
Wydawca:: Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:: elongation growth
germination
masses
photosynthesis
transpiration
kiełkowanie
wzrost elongacyjny
masa
fotosynteza
transpiracja
Opis:: Soil contamination with heavy metals leads to the accumulation of significant amounts of these elements in plants and disrupts their growth and development. The current experiment investigated the effect of lead in the form of Pb(NO3)2 in water solutions of various percentages (0.1%, 1%, 3%) on the germination of maize grains (Zea mays L.), plant growth (fresh and dry mass ) and their photosynthetic activity. The experiment was performed on plants grown from grains germinated on lead solutions and on plants germinated in distilled water, and watered with lead solutions during growth. The negative influence of lead solutions on the germination capacity of grains was demonstrated. Regardless of the timing of lead application, maize elongation growth was clearly inhibited. Similar results were obtained for the masses of the examined plant organs. The rate of transpiration influenced the photosynthesis intensity and depended on the concentration of the lead solution. Along with the increase in lead concentrations a negative effect of lead on all the parameters tested was observed. In general, it can be concluded that only proper management of arable soils can limit the uptake of heavy metals by plants and thus improve their growth and development.
Źródło:: Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2021, 6; 63-80
2543-8832
2545-0999
Pojawia się w:: Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Waterlogging tolerance: A review on regulative morpho-physiological homeostasis of crop plants
Autorzy:: Sharma, Shubhangani
Sharma, Jyotshana
Soni, Vineet
Kalaji, Hazem M.
Elsheery, Nabil I.
Powiązania:: https://bibliotekanauki.pl/articles/1844317.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: antioxidants
cellular metabolites
climate change
photosynthesis
waterlogging
Opis:: The natural environment is being drastically affected by climate change. Under these severe environmental conditions, the growth and productivity of agricultural crops have reduced. Due to unpredictable rainfall, crops growing in the field are often exposed to waterlogging. This leads to significant crop damage and production losses. In this review paper, the morphological and physiological adaptations such as development of aerenchyma, adventitious roots, radial root oxygen loss barrier, and changes in chlorophyll fluorescence parameters of crops under waterlogging are discussed. This will help to understand the effects of waterlogging on various crops and their adaptation that promotes crop growth and productivity. To meet the food requirements of a growing population, the development of waterlogging tolerant crops by screening and plant breeding methods is necessary for plant breeders. Better knowledge of physiological mechanisms in response to waterlogging will facilitate the development of techniques and methods to improve tolerance in crops.
Źródło:: Journal of Water and Land Development; 2021, 49; 16-28
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Impact of water stress on physiological processes of moss Polytrichum piliferum Hedw.
Wpływ stresu wodnego na przebieg procesów fizjologicznych u mchów
Autorzy:: Romańska, Małgorzata
Powiązania:: https://bibliotekanauki.pl/articles/2175241.pdf
Data publikacji:: 2020-11-12
Wydawca:: Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:: dark respiration
hypoxia
photosynthesis
Polytrichum piliferum
rehydration
oddychanie ciemniowe
hipoksja
fotosynteza
rehydratacja
Opis:: Mosses are convenient organisms for studying the reaction to water stress because they do not have an epidermis, which makes them more sensitive to changes in humidity than most other plants. The aim of the study was to determine the effect of water stress on the course of physiological processes of mosses using Polytrichum piliferum Hedw. The present study showed that the action of the abiotic stressor, which is water, adversely affects the photosynthesis and dark respiration processes by reducing their intensity. However, it is worth noting that the respiration process is less dependent on tissue hydration than the photosynthesis, which is clearly demonstrated by the study results. The bryophytes’ resistance to stress factors is responsible for the plant’s ability to maintain homeostasis under stress conditions. The ability to change homeostasis by adapting, surviving or overcoming adverse living conditions also plays an important role.
Mchy są organizmami dogodnymi do badania reakcji na stres wodny, ponieważ nie posiadają epidermy, przez co odznaczają się większą wrażliwością na zmiany wilgotności niż większość innych roślin. Celem pracy było określenie wpływu stresu wodnego na przebieg procesów fizjologicznych mchów na przykładzie Polytrichum piliferum Hedw. Przeprowadzone badania pokazały, że działanie abiotycznego stresora, jakim jest woda, wpływa niekorzystnie na przebieg procesów fotosyntezy i oddychania, poprzez zmniejszenie ich natężenia. Jednak warto zaznaczyć, że proces oddychania jest w mniejszym stopniu uzależniony od uwodnienia tkanek niż proces fotosyntezy, co wyraźnie widać w przeprowadzonych tu badaniach. Za odporność mszaków na czynniki stresowe odpowiada zdolność rośliny do utrzymania homeostazy w czasie działania stresora. Również ważną rolę odgrywa zdolność zmiany homeostazy przez adaptację, przetrwanie albo pokonanie niekorzystnych warunków życiowych.
Źródło:: Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2020, 5; 129-141
2543-8832
2545-0999
Pojawia się w:: Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Selenium nanoparticle protected strawberry against salt stress through modifications in salicylic acid, ion homeostasis, antioxidant machinery, and photosynthesis performance
Autorzy:: Soleymanzadeh, R.
Iranbakhsh, A.
Habibi, G.
Ardebili, Z.O.
Powiązania:: https://bibliotekanauki.pl/articles/2117816.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: nutrition
phenylpropanoid derivatives
photosynthesis
salicylic acid
selenium
nanoparticle
Opis:: Since plant responses to selenium nanoparticles (nSe) had not been clarified, this study was carried out to evaluate the effects of nSe (10 and 100 μM) on photosynthesis performance, ion homeostasis, antioxidant system, and phenylpropanoids in strawberry exposed to salt stress. Inductively Coupled Plasma-Mass Spectroscopy analyses indicated that foliar-applied nSe can be taken up by leaves and trans-located to roots. Salinity led to an increase in Na concentration and reductions in Ca and K contents which were relieved by the nSe applications. Moreover, the nSe treatment at 10 μM alleviated the NaCl-induced lesion to PSII functioning, contributing to improvement in water-splitting complex (Fv /Fo ) under salinity. The exposure to nSe at a concentration of 100 μM exhibited a moderate stress, determined by the increases in hydrogen peroxide (H 2O2) and lipid peroxidation rate (membrane integrity index). The nSe10 treatment increased catalase activity and phenylpropanoid derivatives contents (salicylic acid, catechin, and caffeic acid) and decreased the content of oxidants under salinity condition. Consequently, nSe utilization at a suitable dose can be an effective method to alleviate signs of salt stress via improvements in photosynthesis, ion hemostasis, photosynthesis performance, salicylic acid (a vital signaling defensive hormone), and antioxidant machinery.
Źródło:: Acta Biologica Cracoviensia. Series Botanica; 2020, 62, 1; 33-42
0001-5296
Pojawia się w:: Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:: Biblioteka Nauki

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