Article
Plant Sciences
Igor Pottosin, Miguel Olivas-Aguirre, Oxana Dobrovinskaya, Isaac Zepeda-Jazo, Sergey Shabala
Summary: This study critically discusses the direct and indirect effects of natural polyamines and their catabolites on the activity of key plant ion-transporting proteins, particularly in stress responses. The research predicts the role of polyamines in important cell ionic homeostasis and signaling, and summarizes several unresolved issues including the subcellular levels of polyamines and their mechanisms of action.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Education, Scientific Disciplines
Juan Alberto Vertiz-Hernandez, Angel Antonio Vertiz-Hernandez, Azahel de Jesus Rangel-Lopez, Isaac Campos-Canton
Summary: This study aims to implement and validate the action potential of excitable cells using RC circuits, incorporating dendrites and capacitors not previously considered in mathematical modeling. The experiment was designed based on RC circuits associated with ionic channels, and used a linear function by parts for mathematical modeling.
EUROPEAN JOURNAL OF PHYSICS
(2021)
Article
Pharmacology & Pharmacy
Muhammad Noman, Neelum Gul Qazi, Najeeb Ur Rehman, Arif-ullah Khan
Summary: Brucine exhibits an anti-ulcer effect by inhibiting Helicobacter pylori and H+/K+-ATPase, and improving gastric tissue damage through antioxidant and anti-inflammatory pathways.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Thermodynamics
Mutlu Cevik, Filiz Icier
Summary: The study modeled the ohmic thawing of minced meat samples using FD and FV numerical methods, finding that the FD method and FV method with UDF-1 function in ANSYS for describing heat generation were more successful in predicting temperature changes and aligning with experimental data. While the FV model is more complex, it can be applied for detailed temperature distribution simulations.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Review
Plant Sciences
Amber Gupta, Birendra Prasad Shaw, Binod Bihari Sahu
Summary: Plants minimize Na+ toxicity under salt stress by utilizing membrane transporters and regulatory kinases to regulate Na+ levels. The expression of regulatory kinases enables transporters to effectively manage cytosolic Na+ levels, crucial for plant tolerance to salinity. Bioinformatics-based identification of kinases like OsCIPK24 in salt-sensitive crop plants may lead to biotechnological interventions to enhance salt tolerance and increase annual yield.
FUNCTIONAL PLANT BIOLOGY
(2021)
Article
Physiology
Yann-Stanislas H. M. Barral, Joseph G. Shuttleworth, Michael Clerx, Dominic G. Whittaker, Ken Wang, Liudmila Polonchuk, David J. Gavaghan, Gary R. Mirams
Summary: Computational models of cell membrane potential play a vital role in electrophysiology research. This study investigates the impact of the parameter Gamma(0) on model predictions and highlights the importance of correctly specifying it during model calibration. Results demonstrate the value of explicitly considering Gamma(0) in model formulations.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Environmental Sciences
Jinsung An
Summary: This study used the biotic ligand model to predict the toxicity of inorganic arsenate to barley and wheat. Incorporating the concept of cell plasma membrane electrical potential improved the model's predictability. The study found that the accumulation of H2AsO4- and HAsO42- on the cell membrane surface decreased the toxicity of As(V) to barley as the concentration of Ca2+ increased.
Article
Materials Science, Multidisciplinary
Xiaojie Wei, Zhidong Xia, Wei Zhou, Pei Huang, Peng Fu
Summary: A new simplified finite element analysis method is proposed to predict the electrical and strain response probability of graphene composites. The dispersion of agglomerates enhances the electrical properties of composite materials, while the size distribution of fillers has a negative impact on the electrical properties. These results are important for the evaluation and design of graphene composites as sensing materials in flexible sensors.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Agronomy
Ilie Bodale, Gabriela Mihalache, Vladut Achitei, Gabriel-Ciprian Teliban, Ana Cazacu, Vasile Stoleru
Summary: Plants' absorption of nutrients varies depending on growth stage and environmental conditions. Monitoring the electrical charge flow through xylem sap of tomato plants revealed different consumption patterns of nutrients at various growth stages. This technique can efficiently evaluate nutrient uptake and predict element deficiencies in tomato plants.
Article
Plant Sciences
Kazem Ghassemi-Golezani, Soheila Abdoli
Summary: The combination of salicylic acid and iron-oxide nanoparticles alleviated salt toxicity, improved plant growth, and increased essential oil production in salt-stressed ajowan plants. This treatment resulted in the highest activities of H+-pumps in roots and leaves, leading to reduced sodium uptake and translocation, enhanced nutrient uptake, and higher essential oil contents.
PLANT CELL REPORTS
(2021)
Review
Biochemistry & Molecular Biology
Miren Tamayo-Elizalde, Haoyu Chen, Majid Malboubi, Hua Ye, Antoine Jerusalem
Summary: Several research programmes have shown the impact of Transcranial Ultrasound Stimulation on neuronal functions, but the underlying mechanisms are still unclear. A multiphysics setup combining nanoindentation and patch clamp systems allows for loading, imaging, and recording of single neurons in a perturbed mechanical environment, potentially important for studying the multiphysics of the brain at the cell level.
PROGRESS IN BIOPHYSICS & MOLECULAR BIOLOGY
(2021)
Article
Chemistry, Physical
Ozcan Atlam, Gokhan Dundar
Summary: An alternative Equivalent Electrical Circuit for Proton Exchange Membrane Fuel Cells is modeled in this study, with good agreement between model results and measured values. The model suggests that current passes only on parallel resistance at no-load condition, indicating a FC with higher parallel resistance should be preferred. The proposed model allows for performance comparison of FCs based on defined parameters, and can be used for both steady state and transient analysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Horticulture
Jinnan Song, Jingli Yang, Byoung Ryong Jeong
Summary: This study investigates the effects of NH4+ tolerance on pH changes and ion uptakes in five species through an 84-hour hydroponic cultivation. It reveals that NH4+-tolerant plants, such as ageratum and lettuce, rapidly lower the solution pH, whereas NH4+-sensitive plants like salvia and cabbage show minimal pH decrease. Additionally, increased NH4+ levels lead to a decline in net cation influxes. NH4+-tolerant ageratum and lettuce exhibit a relatively greater net K+ influx compared to NH4+-fed salvia and cabbage.
Article
Soil Science
Lin Liu, Weiliu Li, Yili Lu, Tusheng Ren, Robert Horton
Summary: Soil thermal conductivity (λ) and electrical conductivity (σ) are influenced by soil water content (θ), texture, bulk density (ρb), temperature, structure, and organic matter content. The quantitative relationship between λ and σ, as well as how soil texture and ρb modify this relationship, is not well understood. In this study, a new model for normalized σ curves of soils with a unimodal pore size distribution is developed, and the correlation between λ(θ) and σ(θ) curves is examined. Measurements of θ, λ, and σ on two soils confirm the model's performance.
Article
Multidisciplinary Sciences
Pierre Belleville, Gerard Merlin, Julien Ramousse, Jonathan Deseure
Summary: This study investigates the limitation of activity distribution in electroactive biofilm using a numerical model. The competition between acetate diffusion and electronic conduction is found to be the major factor influencing metabolic activity distribution. The properties of inactive biomass fraction can alter the local biomass distribution, with increased density reducing acetate diffusion and enhancing outer layer biomass activity. High conductivity of the inactive fraction promotes outer layer biomass activity and current production.
SCIENTIFIC REPORTS
(2022)
Article
Plant Sciences
Oksana Sherstneva, Andrey Khlopkov, Ekaterina Gromova, Lyubov Yudina, Yana Vetrova, Anna Pecherina, Darya Kuznetsova, Elena Krutova, Vladimir Sukhov, Vladimir Vodeneev
Summary: This study investigated the dynamic of chlorophyll fluorescence parameters in young wheat seedlings and found a correlation between effective quantum efficiency of photosystem II and biomass accumulation, as well as changes in photosynthetic activity under short-term heating and drought stress. Additionally, the study revealed a positive correlation between Phi(PSII) dark level in young seedlings and tolerance to short-term stress, and a negative relationship between tolerance and non-photochemical fluorescence quenching level under long-term stress conditions. Overall, the results suggest that chlorophyll fluorescence parameters in young seedlings have the potential to predict biomass accumulation and stress tolerance.
FUNCTIONAL PLANT BIOLOGY
(2022)
Article
Plant Sciences
Marina Grinberg, Ekaterina Gromova, Alyona Grishina, Ekaterina Berezina, Maria Ladeynova, Alexander V. Simakin, Vladimir Sukhov, Sergey V. Gudkov, Vladimir Vodeneev
Summary: The use of photoconversion coatings in greenhouses can improve the quality of light and stimulate plant growth and photosynthesis activity, but it may reduce the resistance to heat stress in plants.
Article
Plant Sciences
Lyubov Yudina, Ekaterina Gromova, Marina Grinberg, Alyona Popova, Ekaterina Sukhova, Vladimir Sukhov
Summary: This study investigated the influence of soil water shortage on the parameters of burning-induced electrical signals and photosynthesis in pea seedlings. The results showed that soil water shortage decreased the amplitudes of the burning-induced depolarization signals and photosynthetic inactivation, while burning-induced hyperpolarization signals and increased photosynthetic CO2 assimilation could be observed under strong water shortage. The increase of leaf stomatal conductance induced by electrical signals was identified as a potential mechanism for the burning-induced activation of photosynthetic CO2 assimilation under strong water shortage.
Review
Biochemistry & Molecular Biology
Maria Ladeynova, Darya Kuznetsova, Maxim Mudrilov, Vladimir Vodeneev
Summary: Plants respond to environmental stresses by transmitting long-distance signals and changing hormone levels. Long-distance electrical signals, induced by local stimulation, regulate hormone levels and interact with phytohormones. This review provides insights into the interactions between electrical signals and phytohormones, highlighting important integration nodes involving changes in pH, Ca2+, and ROS levels, and gives an overview of how electrical signals and hormones work together to induce a systemic response.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Anna Pecherina, Marina Grinberg, Maria Ageyeva, Daria Zanegina, Elena Akinchits, Anna Brilkina, Vladimir Vodeneev
Summary: Salinity is a common factor that limits crop productivity. The negative effects of salt stress on plant processes are caused by osmotic stress and toxic ions. The study investigated how salinity affects photosynthesis, transpiration, water content, and cytosolic pH in tobacco and potato plants. Salinity decreased photosynthesis activity and led to a decrease in water content and transpiration. The cytosolic pH also decreased in tobacco and potato plants. The study analyzed potential mechanisms of the effects of salinity on photosynthesis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Lyubov Yudina, Ekaterina Sukhova, Ekaterina Gromova, Maxim Mudrilov, Yuriy Zolin, Alyona Popova, Vladimir Nerush, Anna Pecherina, Andrey A. A. Grishin, Artem A. A. Dorokhov, Vladimir Sukhov
Summary: Parameters of illumination, including spectra, intensity, and photoperiod, have a significant impact on plant cultivation under greenhouse conditions, especially for vegetables like lettuce. This study investigated the influence of photoperiod on lettuce production and photosynthesis parameters. The results showed that increasing the duration of illumination can stimulate dry weight accumulation, which can be achieved by either increasing light period or decreasing light intensity.
Article
Plant Sciences
Marina Grinberg, Yuliya Nemtsova, Maria Ageyeva, Anna Brilkina, Vladimir Vodeneev
Summary: This study investigated the mechanisms of systemic functional responses induced by electrical signals. It was found that chronic beta-irradiation had a positive effect on the morphometric parameters and photosynthetic activity of tobacco plants. Irradiation enhanced the plant's response to electrical signals, resulting in temporary changes in chlorophyll fluorescence parameters and increased amplitude and leaf coverage. Irradiation also enhanced signal-induced cytoplasmic acidification and showed stronger inhibition of stomatal conductance in the plants. The study concluded that the effect of irradiation on the systemic response induced by electrical signals mainly occurs during the transformation stage.
PHOTOSYNTHESIS RESEARCH
(2023)
Article
Plant Sciences
N. S. Mshenskaya, M. A. Grinberg, E. A. Kalyasova, V. A. Vodeneev, N. V. Ilin, N. N. Slyunyaev, E. A. Mareev, Y. V. Sinitsyna
Summary: Magnetic fields with a frequency of 14.3 Hz were found to have a protective effect on wheat plants under drought conditions, delaying harmful changes in transpiration and photosynthesis processes for several days.
Article
Biochemistry & Molecular Biology
Ekaterina Sukhova, Vladimir Sukhov
Summary: Electrical signals in plants are generated in response to various stressors and can greatly affect different physiological processes. These signals play a crucial role in integrating plant responses to stress, but they may also cause temporary separation between cells or plant parts. This separation can have adaptive benefits by storing energy compounds, limiting damage propagation, and potentially triggering programmed cell death.
Review
Chemistry, Physical
Dmitry A. Serov, Venera V. Khabatova, Vladimir Vodeneev, Ruibin Li, Sergey V. Gudkov
Summary: The resistance of microorganisms to antimicrobial drugs is a global issue, and significant efforts are being made to find antimicrobial components, approaches, and therapies. Selenium nanoparticles have high potential for antimicrobial activity, as evidenced by the increasing number of publications in the past decade. This review provides up-to-date information on the antimicrobial properties of selenium nanoparticles, including susceptible microorganisms, mechanisms of action on bacteria, and the impact of nanoparticle properties on antimicrobial activity. It comprehensively describes the antiviral, antibacterial, and antifungal effects of selenium nanoparticles.
Article
Environmental Sciences
Ekaterina Sukhova, Yuriy Zolin, Alyona Popova, Lyubov Yudina, Vladimir Sukhov
Summary: Salinization is a significant factor that limits agricultural plant productivity. Multispectral imaging and the photochemical reflectance index (PRI) can be used to detect early changes in plants under salinization. In this study, we investigated the sensitivity of modified PRIs to changes in pea plants under salinization treatment. The results showed that long-wavelength PRIs decreased, while short-wavelength PRIs increased under salinization. Long-wavelength PRIs were found to be more sensitive to plant changes and could potentially be used as a universal tool for early detection of stress in plants.
Article
Plant Sciences
Daria Ratnitsyna, Lyubov Yudina, Ekaterina Sukhova, Vladimir Sukhov
Summary: Photodamage is a key mechanism of photosynthetic disruption in plants under stress. Investigating photodamage is important for both basic and applied research. However, the complex mechanisms of photodamage make it difficult to use experimental methods, so developing mathematical models and conducting model-based analysis can overcome these limitations. In this study, a modified Farquhar-von Caemmerer-Berry model was developed to describe photodamage of photosynthetic electron transport in C-3 plants, using experimental results from pea plants. The model analysis showed that inactivation of linear electron flow and Rubisco can both increase and decrease photodamage. Simulation of photodamage under different temperatures and light intensities revealed multi-phase temperature dependences, with paradoxical increases in thermal tolerance observed under high temperatures. It was also found that changes in temperature optimums of linear electron flow and Rubisco can modify temperature dependences of photosynthetic electron transport under photodamage induction, mainly stimulating its photodamage.
Article
Plant Sciences
Lyubov Yudina, Alyona Popova, Yuriy Zolin, Ekaterina Sukhova, Vladimir Sukhov
Summary: By studying the effects of increased pressure, it was found that pressure can induce electrical signals and inhibit photosynthesis in plants.
Article
Plant Sciences
Maria N. Ageyeva, Tatiana A. Zdobnova, Mariia S. Nazarova, Galina N. Raldugina, Denis V. Beliaev, Vladimir A. Vodeneev, Anna A. Brilkina
Summary: Salinity has a significant impact on important processes in plants and decreases their yield. This study revealed that lower concentrations of NaCl result in cytosolic acidification in plant cells, while higher concentrations can cause an increase or return to normal levels of cytosolic pH. Additionally, salinity inhibits plant development and affects morphology-related parameters. The relationship between cell length and NaCl concentration is nonlinear.
Article
Plant Sciences
Alyona Grishina, Oksana Sherstneva, Anna Zhavoronkova, Maria Ageyeva, Tatiana Zdobnova, Maxim Lysov, Anna Brilkina, Vladimir Vodeneev
Summary: This study compares the efficiency of hyperspectral imaging and pulse amplitude modulation fluorometry in detecting plant pathogens, and finds that pulse amplitude modulation fluorometry allows for earlier assessment of physiological changes caused by infection.
Article
Biology
Iain Hunter, Raz Leib
Summary: Natural movement is related to health, but it is difficult to measure. Existing methods cannot capture the full range of natural movement. Comparing movement across different species helps identify common biomechanical and computational principles. Developing a system to quantify movement in freely moving animals in natural environments and relating it to life quality is crucial. This study proposes a theoretical framework based on movement ability and validates it in Drosophila.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Andy Gardner
Summary: Fisher's geometric model is a useful tool for predicting key properties of Darwinian adaptation, and here it is applied to predict differences between the evolution of altruistic versus nonsocial phenotypes. The results suggest that the effect size maximizing probability of fixation is smaller in the context of altruism and larger in the context of nonsocial phenotypes, leading to lower overall probability of fixation for altruism and higher overall probability of fixation for nonsocial phenotypes.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Thomas F. Pak, Joe Pitt-Francis, Ruth E. Baker
Summary: Cell competition is a process where cells interact in multicellular organisms to determine a winner or loser status, with loser cells being eliminated through programmed cell death. The winner cells then populate the tissue. The outcome of cell competition is context-dependent, as the same cell type can win or lose depending on the competing cell type. This paper proposes a mathematical framework to study the emergence of winner or loser status, highlighting the role of active cell death and identifying the factors that drive cell competition in a cell-based modeling context.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Haruto Tomizuka, Yuuya Tachiki
Summary: Batesian mimicry is a strategy in which palatable prey species resemble unpalatable prey species to avoid predation. The evolution of this mimicry plays a crucial role in protecting the unpalatable species from extinction.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Jason W. Olejarz, Martin A. Nowak
Summary: Gene drive technology shows potential for population control, but its release may have unpredictable consequences. The study suggests that the failure of suppression is a natural outcome, and there are complex dynamics among wild populations.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Hamid Ravaee, Mohammad Hossein Manshaei, Mehran Safayani, Javad Salimi Sartakhti
Summary: Gene expression analysis is valuable for cancer classification and phenotype identification. IP3G, based on Generative Adversarial Networks, enhances gene expression data and discovers phenotypes in an unsupervised manner. By converting gene expression profiles into images and utilizing IP3G, new phenotype profiles can be generated, improving classification accuracy.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Beatrix Rahnsch, Leila Taghizadeh
Summary: This study forecasts the evolution of the COVID-19 pandemic in Germany using a network-based inference method and compares it with other approaches. The results show that the network-inference based approach outperforms other methods in short-to mid-term predictions, even with limited information about the new disease. Furthermore, predictions based on the estimation of the reproduction number in Germany can yield more reliable results with increasing data availability, but still cannot surpass the network-inference based algorithm.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Rongsheng Huang, Qiaojun Situ, Jinzhi Lei
Summary: Maintaining tissue homeostasis requires appropriate regulation of stem cell differentiation. Random inheritance of epigenetic states plays a pivotal role in stem cell differentiation. This computational model provides valuable insights into the intricate mechanism governing stem cell differentiation and cell reprogramming, offering a promising path for enhancing the field of regenerative medicine.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Patrick Vincent N. Lubenia, Eduardo R. Mendoza, Angelyn R. Lao
Summary: This study compares insulin signaling in healthy and type 2 diabetes states using reaction network analysis. The results show similarities and differences between the two conditions, providing insights into the mechanisms of insulin resistance, including the involvement of other complexes, less restrictive interplay between species, and loss of concentration robustness in GLUT4.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Nuverah Mohsin, Heiko Enderling, Renee Brady-Nicholls, Mohammad U. Zahid
Summary: Mathematical modeling is crucial in understanding radiobiology and designing treatment approaches in radiotherapy for cancer. This study compares three tumor volume dynamics models and analyzes the implications of model selection. A new metric, the point of maximum reduction of tumor volume (MRV), is introduced to quantify the impact of radiotherapy. The results emphasize the importance of caution in selecting models of response to radiotherapy due to the artifacts imposed by each model.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Armindo Salvador
Summary: Michael Savageau's Biochemical Systems Analysis papers have had a significant impact on Systems Biology, generating core concepts and tools. This article provides a brief summary of these papers and discusses the most relevant developments in Biochemical Systems Theory since their publication.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
