Formation of complexes of Rubisco-Rubisco activase from La3+, Ce3+ treatment spinach

Hong, Fashui; Liu, Chao; Zheng, Lei; Wang, Xuefeng; Wu, Kang; Weiping, Song; Lü, Shipeng; Ye, Tao; Zhao, Genping

doi:10.1007/bf02990915

Cited by 50 publications

(4 citation statements)

References 21 publications

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“…UV-B radiation leads to aggregation of reactive oxygen species (ROS) in the chloroplast, which destroys PS II, leading to a reduced rate of electron transfer and damage of the thylakoid membrane. The nanoparticles alleviate the effects of UV-B radiation and improve the photosynthetic rate. − The present study revealed that nitrate reductase and carbonic anhydrase activity along with leaf protein content and leaf nitrogen content significantly increased in plants treated with silver nanoparticles. Application of 50 ppm silver nanoparticles, 1 week before M.…”

Section: Discussionmentioning

confidence: 58%

Green Synthesized Silver Nanoparticles Mitigate Biotic Stress Induced by Meloidogyne incognita in Trachyspermum ammi (L.) by Improving Growth, Biochemical, and Antioxidant Enzyme Activities

et al. 2021

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Meloidogyne incognita is an important plant-parasitic nematode that causes significant crop losses all over the world. The primary control strategy for this pathogen is still based on nematicides, which are hazardous to human health and the environment. Considering these problems, this study aimed to determine the efficacy of different concentrations (25, 50, and 100 ppm) of silver nanoparticles against M. incognita on Trachyspermum ammi . Silver nanoparticles synthesized from Senna siamea were thoroughly characterized using various physicochemical techniques, viz., UV–visible spectrophotometer, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy-dispersive X-ray analyzer (EDX). Results revealed that plants treated with 50 ppm silver nanoparticles one week before M. incognita inoculation (T 2 ) exhibited maximum and significant ( p ≤ 0.05) increases in plant growth, biochemical characteristics, and activities of defense enzymes such as peroxidase, catalase, superoxide dismutase, and ascorbate peroxidase over the inoculated control (IC) plants. Furthermore, the maximum reduction in the number of galls, egg masses, and root-knot indices was recorded in plants treated with 100 ppm silver nanoparticles (T 3 ) followed by plants treated with 50 ppm silver nanoparticles before nematode inoculation (T 2 ), over inoculated plants (IC). Anatomical studies showed accumulation of lignin in the transverse section (TS) of roots treated with 50 ppm silver nanoparticles. As a result, the present finding strongly suggests that silver nanoparticles synthesized from S. siamea had nematicidal activity, and it could be an efficient, safe, cost-effective, and affordable alternative to chemical nematicide.

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Section: Discussionmentioning

confidence: 58%

Green Synthesized Silver Nanoparticles Mitigate Biotic Stress Induced by Meloidogyne incognita in Trachyspermum ammi (L.) by Improving Growth, Biochemical, and Antioxidant Enzyme Activities

et al. 2021

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“…Chlorophyll content, as well as photosynthetic rate, was increased (Hong et al, 2002(Hong et al, , 1999. The next possible effect of REEs mechanism of action is in a role as metallic-activated factors of certain enzymes, which catalyze the catabolism and anabolism of proteins (Hong et al, 2005a;Tian et al, 2005), and increasing activity of enzymes in the reactive oxygen species scavenging system (Xiao et al, 2007;Yan et al, 2007;Zhang et al, 2003). Negative REEs effects on plants occur in higher concentrations.…”

Section: Other Rare Heavy Metals and Metalloidsmentioning

confidence: 99%

Uncommon Heavy Metals, Metalloids and Their Plant Toxicity: A Review

Babula

Adam

Opatřilová

et al. 2009

Sustainable Agriculture Reviews

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Heavy metals represent a group of dangerous pollutants, to which is paid close attention. Many heavy metals are essential as important constituents of pigments and enzymes-mainly zinc, nickel, and copper. However, all metals, especially cadmium, lead, mercury, and copper, are toxic in high concentrations because they disrupt enzyme functions, replacing essential metals in pigments or producing reactive oxygen species. The toxicity of less common heavy metals and metalloids, such as thallium, arsenic, chromium, antimony, selenium, and bismuth has been investigated. Here we review the phytotoxicity of thallium, chromium, antimony, selenium, bismuth; and other rare heavy metals and metalloids such as

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“…Combined in vitro and root application in vivo studies suggested that low concentrations ( c . 200 μM) of lanthanides (Ln 3+ ), such as lanthanum (La 3+ ), cerium (Ce 3+ ), and neodymium (Nd 3+ ), stimulate Rubisco activation and activity by favouring the formation of Rubisco–Rca supercomplexes (Chen et al ., 2000; Hong et al ., 2005; Liu et al ., 2006).…”

Section: Regulation Of Rubisco Activity By the Stromal Environmentmentioning

confidence: 99%

“…This could also be an indirect consequence of changes in Rca activity as in vitro studies demonstrated that K + was 10 times less effective in promoting the release of ADP than Mg 2+ (Lilley & Portis, 1993). Combined in vitro and root application in vivo studies suggested that low concentrations (c. 200 lM) of lanthanides (Ln 3+ ), such as lanthanum (La 3+ ), cerium (Ce 3+ ), and neodymium (Nd 3+ ), stimulate Rubisco activation and activity by favouring the formation of Rubisco-Rca supercomplexes (Chen et al, 2000;Hong et al, 2005;Liu et al, 2006).…”

Section: Effect Of Ions On Rubisco Activitymentioning

confidence: 99%

Regulation of Rubisco activity in crops

Amaral,

Lobo,

Carmo‐Silva

2023

New Phytologist

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SummaryEfficient plant acclimation to changing environmental conditions relies on fast adjustments of the transcriptome, proteome, and metabolome. Regulation of enzyme activity depends on the activity of specific chaperones, chemical post‐translational modifications (PTMs) of amino acid residues, and changes in the cellular and organellar microenvironment. Central to carbon assimilation, and thus plant growth and yield, Rubisco activity is regulated by its chaperone Rubisco activase (Rca) and by adjustments in the chloroplast stroma environment. Focused on crops, this review highlights the main PTMs and stromal ions and metabolites affecting Rubisco and Rca in response to environmental stimuli. Rca isoforms differ in regulatory properties and heat sensitivity, with expression changing according to the surrounding environment. Much of the physiological relevance of Rubisco and Rca PTMs is still poorly understood, though some PTMs have been associated with Rubisco regulation in response to stress. Ion and metabolite concentrations in the chloroplast change in response to variations in light and temperature. Some of these changes promote Rubisco activation while others inhibit activation, deactivate the enzyme, or change the rates of catalysis. Understanding these regulatory mechanisms will aid the development of strategies to improve carbon fixation by Rubisco under rapidly changing environments as experienced by crop plants.

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Formation of complexes of Rubisco-Rubisco activase from La3+, Ce3+ treatment spinach

Cited by 50 publications

References 21 publications

Green Synthesized Silver Nanoparticles Mitigate Biotic Stress Induced by Meloidogyne incognita in Trachyspermum ammi (L.) by Improving Growth, Biochemical, and Antioxidant Enzyme Activities

Green Synthesized Silver Nanoparticles Mitigate Biotic Stress Induced by Meloidogyne incognita in Trachyspermum ammi (L.) by Improving Growth, Biochemical, and Antioxidant Enzyme Activities

Uncommon Heavy Metals, Metalloids and Their Plant Toxicity: A Review

Regulation of Rubisco activity in crops

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