A Model Based on Time, Space, Energy and Iterative Mechanism for Woody Plant Metabolic Rates and Biomass

Shu, Shumiao; Xu, Dehong; Zhao, Yannan; Xiong, Haoqin

doi:10.1166/jbmb.2016.1601

Cited by 4 publications

(1 citation statement)

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“…The assimilation and catabolism processes include hydrogen exchange, assimilation, and utilization of inorganic matter, synthesis, and transformation of organic matter and energy, physiological processes, and other biochemical processes (Shu et al, 2016). The activities of those processes can be directly reflected by the cellular metabolic energy in plants (Vanhercke et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Effects of Different Inorganic Nitrogen Sources of Iris pseudacorus and Iris japonica on Energy Distribution, Nitrogen, and Phosphorus Removal

Duan

Xing

Chen

et al. 2022

horts

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High- and low-affinity transport systems are the main pathways for the transportation of NO3– and NH4+ across intracellular membranes. NO3− and NH4+ are assimilated through different metabolic pathways in plants. Fifteen ATP molecules are hydrolyzed in the metabolic process of NO3–; however, only five ATP molecules are hydrolyzed in that of NH4+. In this research, seedlings of Iris pseudacorus and Iris japonica were used as the experimental materials in the NO3–:NH4+ = 30:0, NO3–:NH4+ = 28:2, NO3–:NH4+ = 27:3, NO3–:NH4+ = 15:15, NO3–:NH4+ = 3:27, and NO3–:NH4+ = 0:30 treatments at the 7.5 mmol·L−1 the total nitrogen content (TN). The intracellular free energy was represented by physiological resistance (R) and physiological impedance (Z) according to the Nernst equation and could conveniently and comprehensively determine the cellular metabolic energy (GB). The maximum absorption rate (Vmax) and Michaelis constant (Km) for NH4+ and NO3– uptake were calculated according to the kinetic equation. The results showed that the cellular metabolic energy (GB) of I. pseudacorus was 1 to 1.5 times lower than that of I. japonica at each treatment on the 10th day. The GB values of I. pseudacorus and I. japonica seedlings increased with increasing NH4+ concentration. However, there was a turning point at the NO3–:NH4+ = 15:15 treatment for the cellular metabolic energy of I. pseudacorus and I. japonica. Correlation analysis showed that the value of cellular metabolic energy was negatively correlated with the Vmax and Km for NO3– uptake, whereas it was positively correlated with that for NH4+ uptake. These results demonstrate that the NO3–:NH4+ = 27:3 treatment level was the most suitable for I. pseudacorus and I. japonica. This indicates that the greater cellular metabolic energy is the most suitable for plant growth when the concentration of ammonium or nitrate had no significant difference at treatment. These results provide a simple and rapid solution for removal of nitrogen by determination of cellular metabolic energy.

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Section: Discussionmentioning

confidence: 99%

Effects of Different Inorganic Nitrogen Sources of Iris pseudacorus and Iris japonica on Energy Distribution, Nitrogen, and Phosphorus Removal

Duan

Xing

Chen

et al. 2022

horts

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A discrete model of ontogenetic growth

Shu

Zhu

Kontsevich

et al. 2021

Ecological Modelling

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Effects of NaHSO3 on Cellular Metabolic Energy, Photosynthesis and Growth of Iris pseudacorus L.

Tian

Xing

et al. 2022

Horticulturae

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According to the law of energy conservation, the energy consumed by plants to resist adversity is equal to the difference between photosynthetic energy and growth energy consumption and cellular metabolic energy in plants. The cellular metabolic energy is calculated based on the electrical signals in plants. This study mainly investigated the effect of NaHSO3 on the growth and energy traits of the aquatic plant Iris pseudacorus L. and explored the effect of NaHSO3 on energy consumption in the process of plant development. In this study, NaHSO3 was used for simulating sulfur pollution in water medium. During the 20-day experiment period, the response of I. pseudocorus to the polluted water sources simulated by adding different concentrations of NaHSO3 (0, 0.5, 2, 4, 10 mmol·L−1) was monitored, and the internal mechanism of the relationship between the forms of energy and the removal of sulfur pollution was analyzed. After the 20-day exposure experiment, the growth and nutrient absorption capacity were significantly inhibited, and this inhibition proved to be concentration-dependent. In addition, high concentrations (4 and 10 mmol·L−1) of NaHSO3 might affect photosynthesis by disrupting cell membrane systems as it may interfere with membrane proteins and lipids and thus alter membrane integrity. Therefore, the cellular metabolic energy was increased and the sulfur absorption by I. pseudocorus was promoted under the low concentration (0.5 mmol/L−1) compared with the control, the role of NaHSO3 in promoting the growth of I. pseudocorus is much greater than its toxic effect under low concentrations. Under the hydroponic culture which contained 0.5 mmol·L−1 of NaHSO3, I. pseudocorus grew well and absorbed more sulfur. The results can be used as a reference for the cultivation of aquatic plants dealing with sulfur pollution, and dilution strategy can be set up to treat water medium that is seriously polluted with sulfur.

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A Model Based on Time, Space, Energy and Iterative Mechanism for Woody Plant Metabolic Rates and Biomass

Cited by 4 publications

References 0 publications

Effects of Different Inorganic Nitrogen Sources of Iris pseudacorus and Iris japonica on Energy Distribution, Nitrogen, and Phosphorus Removal

Effects of Different Inorganic Nitrogen Sources of Iris pseudacorus and Iris japonica on Energy Distribution, Nitrogen, and Phosphorus Removal

A discrete model of ontogenetic growth

Effects of NaHSO3 on Cellular Metabolic Energy, Photosynthesis and Growth of Iris pseudacorus L.

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