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Wang K, Zhang R, Hu W, Dang Y, Huang M, Wang N, Du S, Gao X. Effect of exogenous selenium on physicochemical, structural, functional, thermal, and gel rheological properties of mung bean (Vigna radiate L.) protein. Food Res Int 2024; 191:114706. [PMID: 39059959 DOI: 10.1016/j.foodres.2024.114706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/17/2024] [Accepted: 06/26/2024] [Indexed: 07/28/2024]
Abstract
Selenium (Se) biofortification during the growth process of mung bean is an effective method to improve the Se content and quality. However, the effect of Se biofortification on the physicochemical properties of mung bean protein is unclear. The objective of this study was to clarify the changes in the composition, Se forms, particle structure, functional properties, thermal stability, and gel properties of mung bean protein at four Se application levels. The results showed that the Se content of mung bean protein increased in a dose-dependent manner, with 7.96-fold (P1) and 8.52-fold (P2) enhancement at the highest concentration. Exogenous Se application promotes the conversion of inorganic Se to organic Se. Among them, selenomethionine (SeMet) and methyl selenocysteine (MeSeCys) replaced Met and Cys through the S metabolic pathway and became the dominant organic Se forms in Se-enriched mung bean protein, accounting for more than 80 % of the total Se content. Exogenous Se at 30 g/hm2 significantly up-regulated protein content and promoted the synthesis of sulfur-containing protein components and hydrophobic amino acids in the presence of increased levels of SeMet and MeSeCys. Meanwhile, Cys and Met substitution altered the sulfhydryl groups (SH), β-sheets, and β-turns of protein. The particle size and microstructural characteristics depend on the protein itself and were not affected by exogenous Se. The Se-induced increase in the content of hydrophobic amino acids and β-sheets synergistically increases the thermal stability of the protein. Moderate Se application altered the functional properties of mung bean protein, which was mainly reflected in the significant increase in oil holding capacity (OHC) and foaming capacity (FC). In addition, the increase in SH and β-sheets induced by exogenous Se could alter the protein intermolecular network, contributing to the increase in storage modulus (G') and loss modulus (G″), which resulted in the formation of more highly elastic gels. This study further promotes the application of mung bean protein in the field of food processing and provides a theoretical basis for the extensive development of Se-enriched mung bean protein.
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Affiliation(s)
- Kexin Wang
- Northwest A&F University, College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Yangling 712100, Shaanxi Province, China; Northwest A&F University, College of Food Science and Engineering, Yangling 712100, Shaanxi Province, China
| | - Ruipu Zhang
- Northwest A&F University, College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Yangling 712100, Shaanxi Province, China
| | - Wenxuan Hu
- Northwest A&F University, College of Food Science and Engineering, Yangling 712100, Shaanxi Province, China
| | - Yueyi Dang
- Northwest A&F University, College of Food Science and Engineering, Yangling 712100, Shaanxi Province, China
| | - Mengdi Huang
- Luoyang Academy of Agricultural and Forestry Science, Luoyang 471000, Henan Province, China
| | - Na Wang
- Weinan Institute of Agricultural Sciences, Weinan 714000, Shaanxi Province, China
| | - Shuangkui Du
- Northwest A&F University, College of Food Science and Engineering, Yangling 712100, Shaanxi Province, China.
| | - Xiaoli Gao
- Northwest A&F University, College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Yangling 712100, Shaanxi Province, China.
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2
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Xiong H, Luo Y, Zhao H, Wang J, Hu B, Yan C, Yao T, Zhang Y, Shi X, Rennenberg H. Integrated proteome and physiological traits reveal interactive mechanisms of new leaf growth and storage protein degradation with mature leaves of evergreen citrus trees. TREE PHYSIOLOGY 2024; 44:tpae001. [PMID: 38195893 DOI: 10.1093/treephys/tpae001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 12/29/2023] [Indexed: 01/11/2024]
Abstract
The growth of fruit trees depends on the nitrogen (N) remobilization in mature tissues and N acquisition from the soil. However, in evergreen mature citrus (Citrus reticulata Blanco) leaves, proteins with N storage functions and hub molecules involved in driving N remobilization remain largely unknown. Here, we combined proteome and physiological analyses to characterize the spatiotemporal mechanisms of growth of new leaves and storage protein degradation in mature leaves of citrus trees exposed to low-N and high-N fertilization in the field. Results show that the growth of new leaves is driven by remobilization of stored reserves, rather than N uptake by the roots. In this context, proline and arginine in mature leaves acted as N sources supporting the growth of new leaves in spring. Time-series analyses with gel electrophoresis and proteome analysis indicated that the mature autumn shoot leaves are probably the sites of storage protein synthesis, while the aspartic endopeptidase protein is related to the degradation of storage proteins in mature citrus leaves. Furthermore, bioinformatic analysis based on protein-protein interactions indicated that glutamate synthetase and ATP-citrate synthetase are hub proteins in N remobilization from mature citrus leaves. These results provide strong physiological data for seasonal optimization of N fertilizer application in citrus orchards.
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Affiliation(s)
- Huaye Xiong
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, P.R. China
| | - Yayin Luo
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, P.R. China
| | - Huanyu Zhao
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, P.R. China
| | - Jie Wang
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, P.R. China
| | - Bin Hu
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, P.R. China
| | - Chengquan Yan
- Citrus Research Institute, Southwest University, Xiema, Beibei District, 400712 Chongqing, P.R. China
| | - Tingshan Yao
- Citrus Research Institute, Southwest University, Xiema, Beibei District, 400712 Chongqing, P.R. China
| | - Yueqiang Zhang
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, P.R. China
| | - Xiaojun Shi
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, P.R. China
| | - Heinz Rennenberg
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, P.R. China
- Chair of Tree Physiology, Institute of Forest Sciences, Albert-Ludwigs-Universität Freiburg, Georges-Köhler-Allee 53/54, 79110 Freiburg, Germany
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Cheng C, Zhao X, Yang H, Coldea TE, Zhao H. Mechanism of selenite tolerance during barley germination: A combination of tissue selenium metabolism alterations and ascorbate-glutathione cycle modulation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 205:108189. [PMID: 37979575 DOI: 10.1016/j.plaphy.2023.108189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/16/2023] [Accepted: 11/09/2023] [Indexed: 11/20/2023]
Abstract
Selenite is widely used to increase Selenium (Se) content in cereals, however excessive selenite may be toxic to plant growth. In this study, barley was malted to elucidate the action mechanism of selenite in the generation and detoxification of oxidative toxicity. The results showed that high doses (600 μM) of selenite radically increased oxidative stress by the elevated accumulation of superoxide and malondialdehyde, leading to phenotypic symptoms of selenite-induced toxicity like stunted growth. Barley tolerates selenite through a combination of mechanisms, including altering Se distribution in barley, accelerating Se efflux, and increasing the activity of some essential antioxidant enzymes. Low doses (150 μM) of selenite improved barley biomass, respiratory rate, root vigor, and maintained the steady-state equilibrium between reactive oxygen species (ROS) and antioxidant enzyme. Selenite-induced proline may act as a biosignal to mediate the response of barley to Se stress. Furthermore, low doses of selenite increased the glutathione (GSH) and ascorbate (AsA) concentrations by mediating the ascorbate-glutathione cycle (AsA-GSH cycle). GSH intervention and dimethyl selenide volatilization appear to be the primary mechanisms of selenite tolerance in barley. Thus, results from this study will provide a better understanding of the mechanisms of selenite tolerance in crops.
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Affiliation(s)
- Chao Cheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiujie Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huirong Yang
- College of Food Science and Technology, Southwest Minzu University, Chengdu 610041, China
| | - Teodora Emilia Coldea
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Cluj-Napoca 400372, Romania; Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
| | - Haifeng Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Research Institute for Food Nutrition and Human Health, Guangzhou 510640, China.
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Hu X, Li C, Li Y, Jin Y, Wei L, Wang X, Xu Y, Hu Z. A Novel Glucose-6-Phosphate Isomerase Exists in Chicken Breast Meat: A Selenium-Containing Enzyme that Should Be Re-recognized Through New Eyes. Protein J 2023:10.1007/s10930-023-10105-9. [PMID: 36964419 DOI: 10.1007/s10930-023-10105-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2023] [Indexed: 03/26/2023]
Abstract
Glucose-6-phosphate isomerase (GPI) is a highly conserved glycolytic enzyme in nature, and less information was available for GPI from hens. In this study a newly discovered selenocysteine (Sec)-containing GPI in common chicken breast meat was first isolated, purified and identified. Data about LC-MS/MS, FTIR and Se species analyses show that the molecular weight of the enzyme is 62,091 Da and only one Sec is inserted at the 403rd position in the highly conserved primary domain SIS_PGI with sugar conversion function. The enzyme shows excellent activity against hydroxyl radicals as vitamin C (Vc) in vitro. It is deduced that the Sec-containing GPI in the chicken meat may depend on Sec in its molecular structure to resist reactive oxygen species (ROS) stress produced by the accompanying biochemical reactions in cells, to protect its stability and maintain its efficient function that catalyzes the conversion of glucose-6-phosphate to fructose-6-phosphate in the critical glycolytic pathway.
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Affiliation(s)
- Xin Hu
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Chenxi Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Yuancheng Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Yi Jin
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Lulu Wei
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Xinlei Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Yanlong Xu
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China
| | - Zhongqiu Hu
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
- Laboratory of Quality & Safety Risk Assessment for Agro-Products (Yangling), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, Shaanxi, China.
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5
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Zhang L, Zhang Y, Li S, Li C, Hu X, Li Z, Yue T, Hu Z. Effect of the selenized yeast added in feed on selenium-containing proteins of albumins in egg yolk. Food Chem 2022; 402:134435. [DOI: 10.1016/j.foodchem.2022.134435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 09/24/2022] [Accepted: 09/26/2022] [Indexed: 10/14/2022]
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6
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Xiong H, Ma H, Zhao H, Yang L, Hu B, Wang J, Shi X, Zhang Y, Rennenberg H. Integrated physiological, proteome and gene expression analyses provide new insights into nitrogen remobilization in citrus trees. TREE PHYSIOLOGY 2022; 42:1628-1645. [PMID: 35225347 DOI: 10.1093/treephys/tpac024] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Nitrogen (N) remobilization is an important physiological process that supports the growth and development of trees. However, in evergreen broad-leaved tree species, such as citrus, the mechanisms of N remobilization are not completely understood. Therefore, we quantified the potential of N remobilization from senescing leaves of spring shoots to mature leaves of autumn shoots of citrus trees under different soil N availabilities and further explored the underlying N metabolism characteristics by physiological, proteome and gene expression analyses. Citrus exposed to low N had an approximately 38% N remobilization efficiency (NRE), whereas citrus exposed to high N had an NRE efficiency of only 4.8%. Integrated physiological, proteomic and gene expression analyses showed that photosynthesis, N and carbohydrate metabolism interact with N remobilization. The improvement of N metabolism and photosynthesis, the accumulation of proline and arginine, and delayed degradation of storage protein in senescing leaves are the result of sufficient N supply and low N remobilization. Proteome further showed that energy generation proteins and glutamate synthase were hub proteins affecting N remobilization. In addition, N requirement of mature leaves is likely met by soil supply at high N nutrition, thereby resulting in low N remobilization. These results provide insight into N remobilization mechanisms of citrus that are of significance for N fertilizer management in orchards.
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Affiliation(s)
- Huaye Xiong
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Haotian Ma
- Health Science Center, Xi' an Jiaotong University, Xi'an 710061, China
| | - Huanyu Zhao
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Linsheng Yang
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Bin Hu
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Jie Wang
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Xiaojun Shi
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Yueqiang Zhang
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Heinz Rennenberg
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing 400716, China
- Chair of Tree Physiology, Institute of Forest Sciences, Albert-Ludwigs-Universität Freiburg Georges-Köhler-Allee 53/54, 79110 Freiburg, Germany
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7
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Zhang WD, Li Y, Wang K, Yue Y, Tie M, Gu XJ, Xue YL. Effect of different ionic liquids and organic solvents on the structural and physicochemical properties of cellulose-protein complexes extracted from Se-enriched peanut leaves. Int J Biol Macromol 2022; 217:171-179. [PMID: 35835299 DOI: 10.1016/j.ijbiomac.2022.07.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/28/2022] [Accepted: 07/07/2022] [Indexed: 11/15/2022]
Abstract
Abundant cellulose and insoluble protein were contained in the Se-enriched peanut leaf residue, a by-product from leaf protein extraction. Ionic liquids (ILs) were used to extract the cellulose-protein complexes (CPCs) from Se-enriched peanut leaf residue. The effects of various ILs as extractants and organic solvents as regenerant on the physicochemical properties of CPCs were compared. The results showed that the yield of CPCs and recovery yield of [AMIM]Cl (1-allyl-3-methylimidazole chloride) were better than those of [BMIM]Cl (1-butyl-3-methylimidazolium chloride). Simultaneously, it could be seen from the infrared absorption peaks and secondary structure fitting results that [BMIM]Cl seemed stronger than [AMIM]Cl in destroying the secondary structure of CPCs. Scanning electron microscope (SEM) showed that the CPCs extracted by [BMIM]Cl were lamellate with holes on the surface, and the CPCs extracted by [AMIM]Cl were rough, almost without holes on the surface. Furthermore, the transmittance and tensile strength of the film which contained BA-CPC ([BMIM]Cl as extractant and acetonitrile as regenerant) film were better than those contained AA-CPC ([AMIM]Cl as extractant and acetonitrile as regenerant) film, which might be mainly because the types of ILs and regenerants affect the particle size of CPCs, thereby influencing the mechanical properties of the film.
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Affiliation(s)
- Wei-Dong Zhang
- College of Light Industry, Liaoning University, Shenyang 110036, PR China
| | - Yan Li
- College of Light Industry, Liaoning University, Shenyang 110036, PR China
| | - Ke Wang
- College of Light Industry, Liaoning University, Shenyang 110036, PR China
| | - Ye Yue
- College of Light Industry, Liaoning University, Shenyang 110036, PR China
| | - Mei Tie
- College of Environment, Liaoning University, Shenyang 110036, PR China
| | - Xue-Jun Gu
- Institute of Rare and Scattered Elements, Liaoning University, Shenyang 110036, PR China
| | - You-Lin Xue
- College of Light Industry, Liaoning University, Shenyang 110036, PR China.
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Foliar Spraying of Selenium Combined with Biochar Alleviates Cadmium Toxicity in Peanuts and Enriches Selenium in Peanut Grains. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19063542. [PMID: 35329226 PMCID: PMC8952774 DOI: 10.3390/ijerph19063542] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 01/27/2023]
Abstract
Cadmium (Cd) pollution in soil, particularly in peanut production, is a problem that has attracted global concern and needs solutions urgently. Selenium (Se) can alleviate Cd toxicity; however, the underlying mechanisms are not completely understood. Therefore, two varieties of peanut (Arachis hypogaea Linn.), “Huayu 23” and “Huayu 20”, were chosen as the target crops for this study. A pot experiment was conducted to investigate the effects of two Se application methods combined with biochar on the accumulation of Cd and Se, and the best application method was identified. In addition, the role of Se in alleviating Cd toxicity in peanuts was studied. The results indicated that both Se and biochar decreased the Cd content in peanuts and alleviated Cd toxicity. However, the combined application of foliar Se and biochar significantly increased the peanut biomass by 73.44–132.41%, increased the grain yield of Huayu 23 by 0.60–1.09 fold, and Huayu 20 by 2.38–3.48 fold. Additionally, Cd content in peanut grains was decreased by 32.81–50.07%, and Se content was increased by 31.57–99.75 folds. Biochar can decrease the absorption of Cd from the soil, while Se can increase the accumulation of Cd in cell vacuoles by increasing glutathione and phytochelatin to decrease the movement of Cd into the grains. Therefore, our results indicate that the combined application of foliar Se and biochar can effectively promote the enrichment of Se in peanuts and suppress Cd toxicity.
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Gao Q, Wu JL, Jiang LP, Sun SQ, Gu XJ, Tie M, Tanokura M, Xue YL. Se-O Bond Is Unique to High Se Enriched Sweet Potato Stem Protein with Better Antioxidant Ability. Foods 2021; 10:foods10123064. [PMID: 34945614 PMCID: PMC8701230 DOI: 10.3390/foods10123064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/28/2021] [Accepted: 12/04/2021] [Indexed: 11/16/2022] Open
Abstract
Sweet potato plants were treated with selenium (Se). Spraying Se on the sweet potato leaves was an effective Se enrichment method and proteins were extracted from the sweet potato stem. The structural characteristics of the protein were investigated. Fourier transform infrared spectroscopy (FT-IR) detected more signals from the Se-enriched sweet potato stem protein (SSP), and the number of forms of Se chemical bonds gradually increased with increasing Se content, such as the Se-O bond in high Se-enriched SSP, indicating altered secondary structures.Scanning electron microscopy-energy dispersive spectrometry (SEM-EDS) indicated more Se atoms in the Se-enriched SSPs (SSSPs). The DSC results revealed that Se enrichment enhanced the thermal stability of the samples. Moreover, selenomethionine (SeMet), selenocystine (SeCys2), and methylselenocysteine (MeSeCys) were determined to be the main Se forms in the SSSPs. Furthermore, the SSSPs showed relatively higher superoxide anion radical and DPPH radical scavenging activities than the blank, which indicates that SSSPs can be used as antioxidants. By recovering the proteins, the agricultural by-product-sweet potato stem can be further utilized, and the obtained Se-enriched proteins may contribute to human health.
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Affiliation(s)
- Qi Gao
- College of Light Industry, Liaoning University, Shenyang 110036, China; (Q.G.); (J.-L.W.); (L.-P.J.); (S.-Q.S.)
- Department of Regional Economic Development, Party School of Liaoning Provincial Party Committee, Shenyang 110161, China
| | - Jia-Le Wu
- College of Light Industry, Liaoning University, Shenyang 110036, China; (Q.G.); (J.-L.W.); (L.-P.J.); (S.-Q.S.)
| | - Lan-Ping Jiang
- College of Light Industry, Liaoning University, Shenyang 110036, China; (Q.G.); (J.-L.W.); (L.-P.J.); (S.-Q.S.)
| | - Su-Qi Sun
- College of Light Industry, Liaoning University, Shenyang 110036, China; (Q.G.); (J.-L.W.); (L.-P.J.); (S.-Q.S.)
| | - Xue-Jun Gu
- Institute of Rare and Scattered Elements, Liaoning University, Shenyang 110036, China;
| | - Mei Tie
- College of Environment, Liaoning University, Shenyang 110036, China;
| | - Masaru Tanokura
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
- Correspondence: (M.T.); (Y.-L.X.); Tel.: +81-3-5841-2279 (M.T.); +86-24-6220-2139 (Y.-L.X.); Fax: +81-3-5841-2283 (M.T.); +86-24-6220-2139 (Y.-L.X.)
| | - You-Lin Xue
- College of Light Industry, Liaoning University, Shenyang 110036, China; (Q.G.); (J.-L.W.); (L.-P.J.); (S.-Q.S.)
- Correspondence: (M.T.); (Y.-L.X.); Tel.: +81-3-5841-2279 (M.T.); +86-24-6220-2139 (Y.-L.X.); Fax: +81-3-5841-2283 (M.T.); +86-24-6220-2139 (Y.-L.X.)
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10
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Xiong H, Ma H, Hu B, Zhao H, Wang J, Rennenberg H, Shi X, Zhang Y. Nitrogen fertilization stimulates nitrogen assimilation and modifies nitrogen partitioning in the spring shoot leaves of citrus (Citrus reticulata Blanco) trees. JOURNAL OF PLANT PHYSIOLOGY 2021; 267:153556. [PMID: 34737128 DOI: 10.1016/j.jplph.2021.153556] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
The spring shoot leaves are important sites of nitrogen (N) metabolism in citrus trees. Understanding the physiological and metabolic response of the spring shoot leaves under varying N fertilization is fundamental to the fertilization management in citrus orchards. Thus, the processes affecting N composition, the activities of N metabolism related enzymes, and the expression of relevant genes were explored in spring shoot leaves under four N levels (0, 207, 275, 413 g N tree-1 y-1, as N0, N207, N275, N413). The results showed that, compared with N0, N275 significantly increased total N by 24.81%, which was mainly attributed to enhancement of structural N by 30.92%, free amino acid N by 40.91% and nitrate N by 41.33%. The relative expression of nitrate reductase (NR) and glutamate dehydrogenase (GDH) under N275 increased by 19.32% and 73.48%, respectively, compared with that under N0 treatment. Compared with N0 treatment, the NR transcription level under N275 treatment increased by 381%. The relative transcription levels of NADP-GDH and GDH1 also increased with increasing N fertilization. However, compared with that under N275, the relative transcription of GDH2 under N413 treatment was inhibited. Therefore, the transcript abundance of NR, NADP-GDH,GDH1 and GDH2 affected the activities of NR and GDH and thereby contributed to the regulation of N composition in the leaves. In addition, the activities of glutamine synthetase and nitrite reductase were largely unaffected or even declined in the N207, N275 and N413 treatments compared with the N0. This study elucidated the mechanism of primary N metabolism and partitioning in citrus leaves and provided a theoretical basis for N management in citrus orchards.
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Affiliation(s)
- Huaye Xiong
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, 400716, China.
| | - Haotian Ma
- College of Forensic Medicine, Xi' an Jiaotong University, Xi'an, 710061, China
| | - Bin Hu
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, 400716, China
| | - Huanyu Zhao
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, 400716, China; Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, Southwest University, Chongqing, 400716, China
| | - Jie Wang
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, Southwest University, Chongqing, 400716, China; State Cultivation Base of Eco-agriculture for Southwest Mountainous Land, Southwest University, Chongqing, Chongqing, 400716, China; National Monitoring Station of Soil Fertility and Fertilizer Efficiency on Purple Soils, Southwest University, Chongqing, 400716, China
| | - Heinz Rennenberg
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, 400716, China
| | - Xiaojun Shi
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, Southwest University, Chongqing, 400716, China; State Cultivation Base of Eco-agriculture for Southwest Mountainous Land, Southwest University, Chongqing, Chongqing, 400716, China; National Monitoring Station of Soil Fertility and Fertilizer Efficiency on Purple Soils, Southwest University, Chongqing, 400716, China.
| | - Yueqiang Zhang
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, Southwest University, Chongqing, 400716, China; State Cultivation Base of Eco-agriculture for Southwest Mountainous Land, Southwest University, Chongqing, Chongqing, 400716, China; National Monitoring Station of Soil Fertility and Fertilizer Efficiency on Purple Soils, Southwest University, Chongqing, 400716, China.
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11
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Zhao X, Gao J, Hogenkamp A, Knippels LMJ, Garssen J, Bai J, Yang A, Wu Y, Chen H. Selenium-Enriched Soy Protein Has Antioxidant Potential via Modulation of the NRF2-HO1 Signaling Pathway. Foods 2021; 10:foods10112542. [PMID: 34828827 PMCID: PMC8623322 DOI: 10.3390/foods10112542] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/09/2021] [Accepted: 10/20/2021] [Indexed: 12/21/2022] Open
Abstract
Selenium (Se)-enriched proteins are an important dietary source of Se for humans; however, only a few Se-enriched proteins have been identified. In the present study, we tested for potential antioxidant activity by Se-enriched soy protein, both in vitro and in vivo. Se-enriched soy protein isolate (S-SPI) was shown to have a higher free radical scavenging ability compared to ordinary soy protein isolate (O-SPI). Furthermore, Caco-2 cell viability was improved by S-SPI at low doses, whereas O-SPI did not. In addition, S-SPI was shown to inhibit oxidative stress via modulation of the NRF2-HO1 signaling pathway, upregulating the expression of downstream antioxidant enzymes (GPx, SOD). To further study the antioxidant capacity of S-SPI, BALB/c female mice were given oral gavages with 0.8 mL of S-SPI or O-SPI (5 g/kg/d, 20 g/kg/d and 40 g/kg/d) or saline as control. Hepatic GPx and SOD activity increased with increasing S-SPI dosage, but not with O-SPI. Taken together, our results suggest that Se-enriched soy protein has a high antioxidant ability and may be used as a dietary supplement for people with oxidative dam-age-mediated diseases.
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Affiliation(s)
- Xiaoli Zhao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, 3584 CG Utrecht, The Netherlands
- School of Food Science Technology, Nanchang University, Nanchang 330047, China
- Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, China
| | - Jinyan Gao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- School of Food Science Technology, Nanchang University, Nanchang 330047, China
| | - Astrid Hogenkamp
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Leon M J Knippels
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, 3584 CG Utrecht, The Netherlands
- Global Centre of Excellence Immunology, Danone/Nutricia Research, 3584 CT Utrecht, The Netherlands
| | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, 3584 CG Utrecht, The Netherlands
- Global Centre of Excellence Immunology, Danone/Nutricia Research, 3584 CT Utrecht, The Netherlands
| | - Jing Bai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- School of Food Science Technology, Nanchang University, Nanchang 330047, China
- Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, China
| | - Anshu Yang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, China
| | - Yong Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, China
| | - Hongbing Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
- Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, China
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12
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Wei Y, Zhang J, Qiu S, Huang Q, Yuan L, Chen L, Dai T, Tu T, Zhang B, Yan H, Li W. Selenium Species Determination in Se-Enriched Grain Crops with Foliar Spray of Sodium Selenite by IP-RP-HPLC-UV-HG-AFS. FOOD ANAL METHOD 2021. [DOI: 10.1007/s12161-021-01975-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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13
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Xue HY, Zhao Y, Liu ZH, Wang XW, Zhang JW, Peng X, Tanokura M, Xue YL. Recovery of Yam Soluble Protein from Yam Starch Processing Wastewater. Sci Rep 2020; 10:5384. [PMID: 32214175 PMCID: PMC7096408 DOI: 10.1038/s41598-020-62372-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 03/10/2020] [Indexed: 11/16/2022] Open
Abstract
Over the past two decades, many studies have shown that the yam storage protein dioscorin, which is abundant in the wastewater of starch processing, exhibits many biological activities both in vitro and in vivo. In the present study, the acid-precipitation method was optimized using Box-Behnken design (BBD) combined with response surface methodology (RSM) for the recovery of yam soluble protein (YSP) from wastewater. The experimental yield of YSP reached 57.7%. According to relative quantitative proteomics (LC-MS/MS), the crude YSP was mainly composed of 15 dioscorin isoforms, which was further verified by anion-exchange and size-exclusion chromatography. YSP was found to be rich in glutamic acid and aspartic acid, and the eight essential acids made up approximately 33.7% of the YSP. Moreover, the YSP demonstrated antioxidant activity, including scavenging DPPH, hydroxyl and superoxide anion radicals, and the possible structure-activity relationships were discussed. These results indicated that YSP produced by acid precipitation may be used as a protein source with antioxidant properties.
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Affiliation(s)
- Heng-Yue Xue
- College of Light Industry, Liaoning University, Shenyang, 110036, P. R. China.,Dalian Institute for Drug Control, Dalian, 116021, P.R. China
| | - Yue Zhao
- College of Light Industry, Liaoning University, Shenyang, 110036, P. R. China
| | - Zi-Heng Liu
- College of Light Industry, Liaoning University, Shenyang, 110036, P. R. China
| | - Xiao-Wen Wang
- College of Light Industry, Liaoning University, Shenyang, 110036, P. R. China
| | - Jun-Wei Zhang
- College of Light Industry, Liaoning University, Shenyang, 110036, P. R. China
| | - Xue Peng
- College of Light Industry, Liaoning University, Shenyang, 110036, P. R. China
| | - Masaru Tanokura
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan.
| | - You-Lin Xue
- College of Light Industry, Liaoning University, Shenyang, 110036, P. R. China.
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