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Jin X, Xiao R, Cao Z, Du X. Smart controlled-release nanopesticides based on metal-organic frameworks. Chem Commun (Camb) 2024; 60:6082-6092. [PMID: 38813806 DOI: 10.1039/d4cc01390e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
The practical utilization rates of conventional pesticide formulations by target organisms are very low, which results in the pollution of ecological environments and the formation of pesticide residues in agricultural products. Water-based nanopesticide formulations could become alternative and effective formulations to eventually resolve the main issues of conventional pesticide formulations. In this feature article, we describe the design concept of smart (stimuli-responsive) controlled-release nanopesticides, which are created toward hierarchical targets (pests, pathogens, and foliage) in response to multidimensional stimuli from physiological and environmental factors (such as sunlight) of target organisms and plants, for achieving enhanced insecticidal and fungicidal efficacies. The pore sizes and functionalities of metal-organic frameworks (MOFs) can be fine-tuned through the choice of metal-containing units and organic ligands. Tailor-made MOF nanoparticles with large microporous or mesoporous sizes, as well as good biocompatibility and high thermal, mechanical, and chemical durabilities, are used to load pesticides within these pores followed by coating of plant polyphenols and natural polymers for stimuli-responsive controlled pesticide release. This feature article highlights our works on smart controlled-release MOF-based nanopesticides and also includes related works from other laboratories. The future challenges and promising prospects of smart controlled-release MOF-based nanopesticides are also discussed.
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Affiliation(s)
- Xin Jin
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Ruixi Xiao
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Zejun Cao
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Xuezhong Du
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
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Hafeez K, Atif M, Perveen S, Parveen A, Akhtar F, Yasmeen N. Unraveling the contribution of copper seed priming in enhancing chromium tolerance in wheat by improving germination, growth, and grain yield. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:39549-39569. [PMID: 38822178 DOI: 10.1007/s11356-024-33848-z] [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: 10/31/2023] [Accepted: 05/25/2024] [Indexed: 06/02/2024]
Abstract
Exposure to chromium (Cr) on farmlands drastically restricts the growth and productivity of cereal crops, including wheat (Triticum aestivum L.). Utilizing micronutrients, the seed-priming strategy is crucial to preventing the adverse consequences of Cr-stress. Nevertheless, additional investigation needs to be conducted to figure out whether Cu-priming remedies are beneficial for wheat experiencing Cr-stress. The objective of this study was to ascertain the contribution of Cu-treated seed priming in the mitigation of detrimental impacts of Cr-stress on wheat germination, growth, and production. Two wheat cultivars, Dilkash-20 and Subhani-21, were subjected to seed priming treatments (0 mg/L, 0.1 mg/L, and 1.0 mg/L) of Cu under Cr-stress levels (200 mg/kg) in two successive experiments, respectively, petri-dish and soil-filled pot experiments. The Cu-priming significantly enhanced the wheat seed germination, plant growth, and grain yield under Cr-stress. Cu priming improved enzyme activities such as glutathione peroxidase (14.60, 16.30%), superoxide dismutase (62.55, 115.21%), peroxidase, catalase (78.39, 80.23%), ascorbate peroxidase(17.72, 20.32%), and key primary and secondary metabolites such as proline (54.19, 81.27%), glycine betaine (40.13, 79.39%), total soluble proteins (47.92, 51.58%), phenolics (40.05, 18.61%), and flavonoids (56.90, 113.46%), respectively, of Dilkash-20 and Subhani-21 under Cr-stress. The outcome of our investigation underscored the efficacy of Cu-priming treatments (0.1 mg/L and 1.0 mg/L) in Cr-stress circumstances to augment wheat germination, growth, and grain yield.
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Affiliation(s)
- Khadija Hafeez
- Department of Botany, Government College University, Faisalabad-38000, Pakistan
| | - Muhammad Atif
- Department of Botany, Government College University, Faisalabad-38000, Pakistan
| | - Shagufta Perveen
- Department of Botany, Government College University, Faisalabad-38000, Pakistan.
| | - Abida Parveen
- Department of Botany, Government College University, Faisalabad-38000, Pakistan
| | - Faiza Akhtar
- Department of Botany, Government College University, Faisalabad-38000, Pakistan
| | - Nadia Yasmeen
- Department of Botany, Government College University, Faisalabad-38000, Pakistan
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Li H, Wan L, Li C, Wang L, Zhu S, Chen X, Wang P. Hyperspectal imaging technology for phenotyping iron and boron deficiency in Brassica napus under greenhouse conditions. FRONTIERS IN PLANT SCIENCE 2024; 15:1351301. [PMID: 38855462 PMCID: PMC11157068 DOI: 10.3389/fpls.2024.1351301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 05/10/2024] [Indexed: 06/11/2024]
Abstract
Introduction The micronutrient deficiency of iron and boron is a common issue affecting the growth of rapeseed (Brassica napus). In this study, a non-destructive diagnosis method for iron and boron deficiency in Brassica napus (genotype: Zhongshuang 11) using hyperspectral imaging technology was established. Methods The recognition accuracy was compared using the Fisher Linear Discriminant Analysis (LDA) and Support Vector Machine (SVM) recognition models. Recognition results showed that Multiple Scattering Correction (MSC) could be applied for the full band hyperspectral data processing, while the LDA models presented better performance on establishing the leaf iron and boron deficiency symptom recognition than the SVM models. Results The recognition accuracy of the training set reached 96.67%, and the recognition rate of the prediction set could be 91.67%. To improve the model accuracy, the Competitive Adaptive Reweighted Sampling algorithm (CARS) was added to construct the MSC-CARS-LDA model. 33 featured wavelengths were selected via CARS. The recognition accuracy of the MSC-CARS-LDA training set was 100%, while the recognition accuracy of the MSC-CARS-LDA prediction set was 95.00%. Discussion This study indicates that, it is capable to identify the iron and boron deficiency in rapeseed using hyperspectral imaging technology.
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Affiliation(s)
- Hui Li
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
- Key Laboratory of Modern Agricultural Equipment and Technology (Jiangsu University), Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, China
| | - Long Wan
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
| | - Chengsong Li
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
- National Citrus Engineering Research Center, Chinese Academy of Agricultural Sciences & Southwest University, Chongqing, China
| | - Lihong Wang
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
| | - Shiping Zhu
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
| | - Xinping Chen
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing, China
| | - Pei Wang
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
- Key Laboratory of Modern Agricultural Equipment and Technology (Jiangsu University), Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, China
- Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
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Haber Z, Sharma D, Selvaraj KSV, Sade N. Is CRISPR/Cas9-based multi-trait enhancement of wheat forthcoming? PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 341:112021. [PMID: 38311249 DOI: 10.1016/j.plantsci.2024.112021] [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: 11/14/2023] [Revised: 01/25/2024] [Accepted: 01/31/2024] [Indexed: 02/09/2024]
Abstract
Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) technologies have been implemented in recent years in the genome editing of eukaryotes, including plants. The original system of knocking out a single gene by causing a double-strand break (DSB), followed by non-homologous end joining (NHEJ) or Homology-directed repair (HDR) has undergone many adaptations. These adaptations include employing CRISPR/Cas9 to upregulate gene expression or to cause specific small changes to the DNA sequence of the gene-of-interest. In plants, multiplexing, i.e., inducing multiple changes by CRISPR/Cas9, is extremely relevant due to the redundancy of many plant genes, and the time- and labor-consuming generation of stable transgenic plant lines via crossing. Here we discuss relevant examples of various traits, such as yield, biofortification, gluten content, abiotic stress tolerance, and biotic stress resistance, which have been successfully manipulated using CRISPR/Cas9 in plants. While existing studies have primarily focused on proving the impact of CRISPR/Cas9 on a single trait, there is a growing interest among researchers in creating a multi-stress tolerant wheat cultivar 'super wheat', to commercially and sustainably enhance wheat yields under climate change. Due to the complexity of the technical difficulties in generating multi-target CRISPR/Cas9 lines and of the interactions between stress responses, we propose enhancing already commercial local landraces with higher yield traits along with stress tolerances specific to the respective localities, instead of generating a general 'super wheat'. We hope this will serve as the sustainable solution to commercially enhancing crop yields under both stable and challenging environmental conditions.
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Affiliation(s)
- Zechariah Haber
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv 69978, Israel
| | - Davinder Sharma
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv 69978, Israel
| | - K S Vijai Selvaraj
- Vegetable Research Station, Tamil Nadu Agricultural University, Palur 607102, Tamil Nadu, India
| | - Nir Sade
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv 69978, Israel.
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Weber JN, Minner-Meinen R, Kaufholdt D. The Mechanisms of Molybdate Distribution and Homeostasis with Special Focus on the Model Plant Arabidopsis thaliana. Molecules 2023; 29:40. [PMID: 38202623 PMCID: PMC10780190 DOI: 10.3390/molecules29010040] [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: 10/06/2023] [Revised: 12/08/2023] [Accepted: 12/15/2023] [Indexed: 01/12/2024] Open
Abstract
This review article deals with the pathways of cellular and global molybdate distribution in plants, especially with a full overview for the model plant Arabidopsis thaliana. In its oxidized state as bioavailable molybdate, molybdenum can be absorbed from the environment. Especially in higher plants, molybdenum is indispensable as part of the molybdenum cofactor (Moco), which is responsible for functionality as a prosthetic group in a variety of essential enzymes like nitrate reductase and sulfite oxidase. Therefore, plants need mechanisms for molybdate import and transport within the organism, which are accomplished via high-affinity molybdate transporter (MOT) localized in different cells and membranes. Two different MOT families were identified. Legumes like Glycine max or Medicago truncatula have an especially increased number of MOT1 family members for supplying their symbionts with molybdate for nitrogenase activity. In Arabidopsis thaliana especially, the complete pathway followed by molybdate through the plant is traceable. Not only the uptake from soil by MOT1.1 and its distribution to leaves, flowers, and seeds by MOT2-family members was identified, but also that inside the cell. the transport trough the cytoplasm and the vacuolar storage mechanisms depending on glutathione were described. Finally, supplying the Moco biosynthesis complex by MOT1.2 and MOT2.1 was demonstrated.
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Affiliation(s)
| | | | - David Kaufholdt
- Institut für Pflanzenbiologie, Technische Universität Braunschweig, Humboldtstrasse 1, D-38106 Braunschweig, Germany
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Dong J, Han A, Zhao Y, Li H, Yang Y, Yuan B, Wang Y, Liu R, Yin X, Du X. Smart, degradable, and eco-friendly carboxymethyl cellulose-Ca II hydrogel-like networks gated MIL-101(Fe III) nanoherbicides for paraquat delivery. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166424. [PMID: 37634715 DOI: 10.1016/j.scitotenv.2023.166424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/23/2023] [Accepted: 08/17/2023] [Indexed: 08/29/2023]
Abstract
Nanopesticides have been selected as one of the top 10 chemical innovations for enhancing the efficacy and safety of agrochemicals. Herein, smart, degradable, and eco-friendly metal-organic framework MIL-101(FeIII) nanoherbicides coated with carboxymethyl cellulose-CaII (CMC-CaII) cross-linking hydrogel-like networks are synthesized via a simple strategy. The coating of the CMC-CaII hydrogel-like gatekeepers is oriented by the coordination unsaturated FeIII clusters on the surfaces of the MIL-101(FeIII) nanocarriers to form a dense film network to prevent paraquat (PQ) leakage. Based on the stimuli factors (acid/basic pH, GSH, phosphates, and EDTA) of physiological and natural environments of target plants, the nanoherbicides are combined with five stimuli-responsive properties to attain the various controlled release of packaged PQ by the disassembly of the gatekeepers and/or the degradation of the MOF skeleton structure. More importantly, based on the stimuli-responsive controlled release mechanisms, the eco-friendly nanocarriers are ultimately degraded against bioaccumulation in plants or soil. The coating of natural CMC could promote the spreading of PQ owing to improvement of wettability for aqueous droplets of nanoherbicides on hydrophobic foliage. The PQ trapped in nanocarriers can effectively prevent PQ degradation, which showed that cumulative degradation rate is ca. 2.6 times lower than that of technical PQ under UV irradiation. The prepared nanoherbicides loaded with PQ show good control efficacy against weeds by controlling the release of PQ; good safety on seed germination (germination rate 97.32-99.67 %), seedling emergence (emergence rate 95.53-99.67 %), and are beneficial for the growth of wheat seedling (increase rate of plant height 1.89-6.97 % and 0.54-5.67 % after 7 and 15 days of seedling emergence, respectively) in the greenhouse; good biosafety for honeybees (Apis mellifera L.), which shows that lethal rates were 2.04 and 2.55 times lower than technical PQ for incubation 24 and 48 h, respectively. The nanoherbicides have potential applications in the field for PQ green agriculture.
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Affiliation(s)
- Jiangtao Dong
- Postdoctoral Research Base, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, People's Republic of China; Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, People's Republic of China.
| | - Aohui Han
- Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, People's Republic of China
| | - Yanli Zhao
- Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, People's Republic of China
| | - Haoming Li
- Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, People's Republic of China
| | - Yue Yang
- Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, People's Republic of China
| | - Bowen Yuan
- Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, People's Republic of China
| | - Yishan Wang
- Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, People's Republic of China
| | - Runqiang Liu
- Postdoctoral Research Base, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, People's Republic of China; Henan Engineering Research Center of Green Pesticide Creation & Intelligent Pesticide Residue Sensor Detection, Henan Institute of Science and Technology, Xinxiang 453003, Henan Province, People's Republic of China.
| | - Xinming Yin
- College of Agronomy Post-Doctoral Research Station, Henan Agricultural University, Zhengzhou 450002, Henan Province, People's Republic of China.
| | - Xuezhong Du
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China.
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Chen C, Zhao YY, Wang D, Ren YH, Liu HL, Tian Y, Geng YF, Tang YR, Chen XF. Effects of nanoscale zinc oxide treatment on growth, rhizosphere microbiota, and metabolism of Aconitum carmichaelii. PeerJ 2023; 11:e16177. [PMID: 37868063 PMCID: PMC10590109 DOI: 10.7717/peerj.16177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/04/2023] [Indexed: 10/24/2023] Open
Abstract
Trace elements play a crucial role in the growth and bioactive substance content of medicinal plants, but their utilization efficiency in soil is often low. In this study, soil and Aconitum carmichaelii samples were collected and measured from 22 different locations, followed by an analysis of the relationship between trace elements and the yield and alkaloid content of the plants. The results indicated a significant positive correlation between zinc, trace elements in the soil, and the yield and alkaloid content of A. carmichaelii. Subsequent treatment of A. carmichaelii with both bulk zinc oxide (ZnO) and zinc oxide nanoparticles (ZnO NPs) demonstrated that the use of ZnO NPs significantly enhanced plant growth and monoester-type alkaloid content. To elucidate the underlying mechanisms responsible for these effects, metabolomic analysis was performed, resulting in the identification of 38 differentially expressed metabolites in eight metabolic pathways between the two treatments. Additionally, significant differences were observed in the rhizosphere bacterial communities, with Bacteroidota and Actinobacteriota identified as valuable biomarkers for ZnO NP treatment. Covariation analysis further revealed significant correlations between specific microbial communities and metabolite expression levels. These findings provide compelling evidence that nanoscale zinc exhibits much higher utilization efficiency compared to traditional zinc fertilizer.
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Affiliation(s)
- Cun Chen
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, China
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu, Sichuan, China
| | - Yu-yang Zhao
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Duo Wang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, China
| | - Ying-hong Ren
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu, Sichuan, China
| | - Hong-ling Liu
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu, Sichuan, China
| | - Ye Tian
- Sichuan Jianengda Panxi Pharmaceutical Co. LTD, Xichang, Sichuan, China
| | - Yue-fei Geng
- Sichuan Jianengda Panxi Pharmaceutical Co. LTD, Xichang, Sichuan, China
| | - Ying-rui Tang
- College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu, Sichuan, China
| | - Xing-fu Chen
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, China
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Schmollinger S, Chen S, Merchant SS. Quantitative elemental imaging in eukaryotic algae. Metallomics 2023; 15:mfad025. [PMID: 37186252 PMCID: PMC10209819 DOI: 10.1093/mtomcs/mfad025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 03/03/2023] [Indexed: 05/17/2023]
Abstract
All organisms, fundamentally, are made from the same raw material, namely the elements of the periodic table. Biochemical diversity is achieved by how these elements are utilized, for what purpose, and in which physical location. Determining elemental distributions, especially those of trace elements that facilitate metabolism as cofactors in the active centers of essential enzymes, can determine the state of metabolism, the nutritional status, or the developmental stage of an organism. Photosynthetic eukaryotes, especially algae, are excellent subjects for quantitative analysis of elemental distribution. These microbes utilize unique metabolic pathways that require various trace nutrients at their core to enable their operation. Photosynthetic microbes also have important environmental roles as primary producers in habitats with limited nutrient supplies or toxin contaminations. Accordingly, photosynthetic eukaryotes are of great interest for biotechnological exploitation, carbon sequestration, and bioremediation, with many of the applications involving various trace elements and consequently affecting their quota and intracellular distribution. A number of diverse applications were developed for elemental imaging, allowing subcellular resolution, with X-ray fluorescence microscopy (XFM, XRF) being at the forefront, enabling quantitative descriptions of intact cells in a non-destructive method. This Tutorial Review summarizes the workflow of a quantitative, single-cell elemental distribution analysis of a eukaryotic alga using XFM.
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Affiliation(s)
- Stefan Schmollinger
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, CA 94720, USA
- Departments of Molecular and Cell Biology and Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
| | - Si Chen
- X-ray Science Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Sabeeha S Merchant
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, CA 94720, USA
- Departments of Molecular and Cell Biology and Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
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Xu C, Guo H, Li R, Lan X, Zhang Y, Xie Q, Zhu D, Mu Q, Wang Z, An M, Xia Z, Wu Y. Transcriptomic and functional analyses reveal the molecular mechanisms underlying Fe-mediated tobacco resistance to potato virus Y infection. FRONTIERS IN PLANT SCIENCE 2023; 14:1163679. [PMID: 37063211 PMCID: PMC10098458 DOI: 10.3389/fpls.2023.1163679] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 03/15/2023] [Indexed: 06/19/2023]
Abstract
Potato virus Y (PVY) mainly infects Solanaceous crops, resulting in considerable losses in the yield and quality. Iron (Fe) is involved in various biological processes in plants, but its roles in resistance to PVY infection has not been reported. In this study, foliar application of Fe could effectively inhibit early infection of PVY, and a full-length transcriptome and Illumina RNA sequencing was performed to investigate its modes of action in PVY-infected Nicotiana tabacum. The results showed that 18,074 alternative splicing variants, 3,654 fusion transcripts, 3,086 long non-coding RNAs and 14,403 differentially expressed genes (DEGs) were identified. Specifically, Fe application down-regulated the expression levels of the DEGs related to phospholipid hydrolysis, phospholipid signal, cell wall biosynthesis, transcription factors (TFs) and photosystem I composition, while those involved with photosynthetic electron transport chain (PETC) were up-regulated at 1 day post inoculation (dpi). At 3 dpi, these DEGs related to photosystem II composition, PETC, molecular chaperones, protein degradation and some TFs were up-regulated, while those associated with light-harvesting, phospholipid hydrolysis, cell wall biosynthesis were down-regulated. At 9 dpi, Fe application had little effects on resistance to PVY infection and transcript profiles. Functional analysis of these potentially critical DEGs was thereafter performed using virus-induced gene silencing approaches and the results showed that NbCat-6A positively regulates PVY infection, while the reduced expressions of NbWRKY26, NbnsLTP, NbFAD3 and NbHSP90 significantly promote PVY infection in N. benthamiana. Our results elucidated the regulatory network of Fe-mediated resistance to PVY infection in plants, and the functional candidate genes also provide important theoretical bases to further improve host resistance against PVY infection.
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Affiliation(s)
- Chuantao Xu
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
- Luzhou City Company of Sichuan Province Tobacco Company, Luzhou, China
| | - Huiyan Guo
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Rui Li
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Xinyu Lan
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Yonghui Zhang
- Luzhou City Company of Sichuan Province Tobacco Company, Luzhou, China
| | - Qiang Xie
- Luzhou City Company of Sichuan Province Tobacco Company, Luzhou, China
| | - Di Zhu
- Guizhou Qianxinan Prefectural Tobacco Company, Xingyi, China
| | - Qing Mu
- Guizhou Qianxinan Prefectural Tobacco Company, Xingyi, China
| | - Zhiping Wang
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Mengnan An
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Zihao Xia
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Yuanhua Wu
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
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Proteomic Analysis of Roots Response to Potassium Deficiency and the Effect of TaHAK1-4A on K+ Uptake in Wheat. Int J Mol Sci 2022; 23:ijms232113504. [PMID: 36362290 PMCID: PMC9659051 DOI: 10.3390/ijms232113504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/17/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
Potassium (K+) is essential for plant growth and stress responses. A deficiency in soil K+ contents can result in decreased wheat quality and productivity. Thus, clarifying the molecular mechanism underlying wheat responses to low-K+ (LK) stress is critical. In this study, a tandem mass tag (TMT)-based quantitative proteomic analysis was performed to investigate the differentially abundant proteins (DAPs) in roots of the LK-tolerant wheat cultivar “KN9204” at the seedling stage after exposure to LK stress. A total of 104 DAPs were identified in the LK-treated roots. The DAPs related to carbohydrate and energy metabolism, transport, stress responses and defense, and post-translational modifications under LK conditions were highlighted. We identified a high-affinity potassium transporter (TaHAK1-4A) that was significantly up-regulated after the LK treatment. Additionally, TaHAK1-4A was mainly expressed in roots, and the encoded protein was localized in the plasma membrane. The complementation assay in yeast suggested that TaHAK1-4A mediates K+ uptake under extreme LK conditions. The overexpression of TaHAK1-4A increased the fresh weight and root length of Arabidopsis under LK conditions and improved the growth of Arabidopsis athak5 mutant seedlings, which grow poorly under LK conditions. Moreover, silencing of TaHAK1-4A in wheat roots treated with LK stress decreased the root length, dry weight, K+ concentration, and K+ influx. Accordingly, TaHAK1-4A is important for the uptake of K+ by roots exposed to LK stress. Our results reveal the protein metabolic changes in wheat induced by LK stress. Furthermore, we identified a candidate gene potentially relevant for developing wheat lines with increased K+ use efficiency.
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Prusty S, Sahoo RK, Nayak S, Poosapati S, Swain DM. Proteomic and Genomic Studies of Micronutrient Deficiency and Toxicity in Plants. PLANTS 2022; 11:plants11182424. [PMID: 36145825 PMCID: PMC9501179 DOI: 10.3390/plants11182424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 09/02/2022] [Accepted: 09/04/2022] [Indexed: 11/21/2022]
Abstract
Micronutrients are essential for plants. Their growth, productivity and reproduction are directly influenced by the supply of micronutrients. Currently, there are eight trace elements considered to be essential for higher plants: Fe, Zn, Mn, Cu, Ni, B, Mo, and Cl. Possibly, other essential elements could be discovered because of recent advances in nutrient solution culture techniques and in the commercial availability of highly sensitive analytical instrumentation for elemental analysis. Much remains to be learned about the physiology of micronutrient absorption, translocation and deposition in plants, and about the functions they perform in plant growth and development. With the recent advancements in the proteomic and molecular biology tools, researchers have attempted to explore and address some of these questions. In this review, we summarize the current knowledge of micronutrients in plants and the proteomic/genomic approaches used to study plant nutrient deficiency and toxicity.
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Affiliation(s)
- Suchismita Prusty
- Department of Biotechnology, Centurion University of Technology and Management, Bhubaneswar 752050, Odisha, India
| | - Ranjan Kumar Sahoo
- Department of Biotechnology, Centurion University of Technology and Management, Bhubaneswar 752050, Odisha, India
| | - Subhendu Nayak
- Division of Health Sciences, The Clorox Company, 210W Pettigrew Street, Durham, NC 27701, USA
| | - Sowmya Poosapati
- Division of Biological Sciences, Cell and Developmental Biology Section, University of California, San Diego, CA 92093, USA
- Correspondence: (S.P.); (D.M.S.)
| | - Durga Madhab Swain
- Division of Biological Sciences, Cell and Developmental Biology Section, University of California, San Diego, CA 92093, USA
- Correspondence: (S.P.); (D.M.S.)
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12
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Hui C, Schmollinger S, Strenkert D, Holbrook K, Montgomery HR, Chen S, Nelson HM, Weber PK, Merchant SS. Simple steps to enable reproducibility: culture conditions affecting Chlamydomonas growth and elemental composition. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:995-1014. [PMID: 35699388 DOI: 10.1111/tpj.15867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 05/26/2023]
Abstract
Even subtle modifications in growth conditions elicit acclimation responses affecting the molecular and elemental makeup of organisms, both in the laboratory and in natural habitats. We systematically explored the effect of temperature, pH, nutrient availability, culture density, and access to CO2 and O2 in laboratory-grown algal cultures on growth rate, the ionome, and the ability to accumulate Fe. We found algal cells accumulate Fe in alkaline conditions, even more so when excess Fe is present, coinciding with a reduced growth rate. Using a combination of Fe-specific dyes, X-ray fluorescence microscopy, and NanoSIMS, we show that the alkaline-accumulated Fe was intracellularly sequestered into acidocalcisomes, which are localized towards the periphery of the cells. At high photon flux densities, Zn and Ca specifically over-accumulate, while Zn alone accumulates at low temperatures. The impact of aeration was probed by reducing shaking speeds and changing vessel fill levels; the former increased the Cu quota of cultures, the latter resulted in a reduction in P, Ca, and Mn at low fill levels. Trace element quotas were also affected in the stationary phase, where specifically Fe, Cu, and Zn accumulate. Cu accumulation here depends inversely on the Fe concentration of the medium. Individual laboratory strains accumulate Ca, P, and Cu to different levels. All together, we identified a set of specific changes to growth rate, elemental composition, and the capacity to store Fe in response to subtle differences in culturing conditions of Chlamydomonas, affecting experimental reproducibility. Accordingly, we recommend that these variables be recorded and reported as associated metadata.
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Affiliation(s)
- Colleen Hui
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
- Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
| | - Stefan Schmollinger
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
| | - Daniela Strenkert
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
| | - Kristen Holbrook
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Hayden R Montgomery
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Si Chen
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Hosea M Nelson
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Peter K Weber
- Lawrence Livermore National Laboratory, Physical and Life Science Directorate, Livermore, CA, 94550, USA
| | - Sabeeha S Merchant
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, 94720, USA
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
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13
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Tahoun AMMA, El-Enin MMA, Mancy AG, Sheta MH, Shaaban A. Integrative Soil Application of Humic Acid and Foliar Plant Growth Stimulants Improves Soil Properties and Wheat Yield and Quality in Nutrient-Poor Sandy Soil of a Semiarid Region. JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION 2022; 22:2857-2871. [PMID: 35528198 PMCID: PMC9059912 DOI: 10.1007/s42729-022-00851-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
Sandy soils (containing > 50% sand) are widely distributed worldwide and are characterized by their poor structure, low organic matter, weak hydraulic and nutritional properties, and low crop productivity. Using a 2-year pot experiment, in this study, we investigated the effects of humic acid (HA) as a soil amendment and study two plant growth stimulants (PGSs), zinc oxide nanoparticles (ZnONPs), and L-tryptophan (L-TRP), as a foliar application on wheat grown in nutrient-poor sandy soil. Three HA rates (0 (HA0), 0.2 (HA0.2), and 0.4 (HA0.4) g kg-1 soil) and five PGS levels [control, 50 mg l-1 (ZnONPs50), 100 mg l-1 (ZnONPs100), 0.25 mmol l-1 (L-TRP0.25), and 0.5 mmol l-1 (L-TRP0.5)] were used. The soil hydro-physico-chemical properties, morpho-physiological responses, yield, and quality were measured. HA addition amended the soil structure by allowing rapid macroaggregate formation, decreasing bulk density and pH, and increasing porosity and electrical conductivity, thereby improving soil hydraulic properties. HA0.2 and HA0.4 additions improved growth, yield components, and grain minerals, resulting in higher grain yield by 28.3-54.4%, grain protein by 10.2-13.4%, wet gluten by 18.2-23.3%, and dry gluten by 23.5-29.5%, respectively, than HA0. Foliar application of ZnONPs or L-TRP, especially at higher concentrations compared to the control, noticeably recorded the same positive results as HA treatments. The best results were achieved through the integration of HA0.4 + ZnONPs100 or L-TRP0.5 to the tested nutrient-poor sandy soil. The interactive application of HA0.4 + ZnONPs100 or L-TRP0.5 and the use of mineral fertilizer, which is considered a surplus point in permaculture, can be recommended for sustainable wheat production in nutrient-poor sandy soil.
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Affiliation(s)
| | | | - Ahmed G. Mancy
- Soils and Water Department, Faculty of Agriculture, Al-Azhar University, Cairo, 11884 Egypt
| | - Mohamed H. Sheta
- Soils and Water Department, Faculty of Agriculture, Al-Azhar University, Cairo, 11884 Egypt
| | - Ahmed Shaaban
- Agronomy Department, Faculty of Agriculture, Fayoum University, Fayoum, 63514 Egypt
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14
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Lešková A, Javot H, Giehl RFH. Metal crossroads in plants: modulation of nutrient acquisition and root development by essential trace metals. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1751-1765. [PMID: 34791130 DOI: 10.1093/jxb/erab483] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 11/01/2021] [Indexed: 06/13/2023]
Abstract
The metals iron, zinc, manganese, copper, molybdenum, and nickel are essential for the growth and development of virtually all plant species. Although these elements are required at relatively low amounts, natural factors and anthropogenic activities can significantly affect their availability in soils, inducing deficiencies or toxicities in plants. Because essential trace metals can shape root systems and interfere with the uptake and signaling mechanisms of other nutrients, the non-optimal availability of any of them can induce multi-element changes in plants. Interference by one essential trace metal with the acquisition of another metal or a non-metal nutrient can occur prior to or during root uptake. Essential trace metals can also indirectly impact the plant's ability to capture soil nutrients by targeting distinct root developmental programs and hormone-related processes, consequently inducing largely metal-specific changes in root systems. The presence of metal binding domains in many regulatory proteins also enables essential trace metals to coordinate nutrient uptake by acting at high levels in hierarchical signaling cascades. Here, we summarize the known molecular and cellular mechanisms underlying trace metal-dependent modulation of nutrient acquisition and root development, and highlight the importance of considering multi-element interactions to breed crops better adapted to non-optimal trace metal availabilities.
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Affiliation(s)
- Alexandra Lešková
- Aix Marseille Univ, CEA, CNRS, Bioscience and Biotechnology Institut of Aix-Marseille (BIAM), SAVE, Saint Paul-Lez-Durance, F-13108, France
| | - Hélène Javot
- Aix Marseille Univ, CEA, CNRS, Bioscience and Biotechnology Institut of Aix-Marseille (BIAM), SAVE, Saint Paul-Lez-Durance, F-13108, France
| | - Ricardo F H Giehl
- Department of Physiology & Cell Biology, Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, 06466 Seeland, Germany
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15
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Gorelova V, Colinas M, Dell’Aglio E, Flis P, Salt DE, Fitzpatrick TB. Phosphorylated B6 vitamer deficiency in SALT OVERLY SENSITIVE 4 mutants compromises shoot and root development. PLANT PHYSIOLOGY 2022; 188:220-240. [PMID: 34730814 PMCID: PMC8774746 DOI: 10.1093/plphys/kiab475] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 09/05/2021] [Indexed: 05/31/2023]
Abstract
Stunted growth in saline conditions is a signature phenotype of the Arabidopsis SALT OVERLY SENSITIVE mutants (sos1-5) affected in pathways regulating the salt stress response. One of the mutants isolated, sos4, encodes a kinase that phosphorylates pyridoxal (PL), a B6 vitamer, forming the important coenzyme pyridoxal 5'-phosphate (PLP). Here, we show that sos4-1 and more recently isolated alleles are deficient in phosphorylated B6 vitamers including PLP. This deficit is concomitant with a lowered PL level. Ionomic profiling of plants under standard laboratory conditions (without salt stress) reveals that sos4 mutants are perturbed in mineral nutrient homeostasis, with a hyperaccumulation of transition metal micronutrients particularly in the root, accounting for stress sensitivity. This is coincident with the accumulation of reactive oxygen species, as well as enhanced lignification and suberization of the endodermis, although the Casparian strip is intact and functional. Further, micrografting shows that SOS4 activity in the shoot is necessary for proper root development. Growth under very low light alleviates the impairments, including salt sensitivity, suggesting that SOS4 is important for developmental processes under moderate light intensities. Our study provides a basis for the integration of SOS4 derived B6 vitamers into plant health and fitness.
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Affiliation(s)
- Vera Gorelova
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
| | - Maite Colinas
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
| | - Elisa Dell’Aglio
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
| | - Paulina Flis
- Future Food Beacon of Excellence and School of Biosciences, University of Nottingham, Leicestershire LE12 5RD, UK
| | - David E Salt
- Future Food Beacon of Excellence and School of Biosciences, University of Nottingham, Leicestershire LE12 5RD, UK
| | - Teresa B Fitzpatrick
- Department of Botany and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
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16
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Ramzan M, Ayub F, Shah AA, Naz G, Shah AN, Malik A, Sardar R, Telesiński A, Kalaji HM, Dessoky ES, Elgawad HA. Synergistic Effect of Zinc Oxide Nanoparticles and Moringa oleifera Leaf Extract Alleviates Cadmium Toxicity in Linum usitatissimum: Antioxidants and Physiochemical Studies. FRONTIERS IN PLANT SCIENCE 2022; 13:900347. [PMID: 35982701 PMCID: PMC9380429 DOI: 10.3389/fpls.2022.900347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 04/11/2022] [Indexed: 05/06/2023]
Abstract
Among heavy metals, cadmium (Cd) is one of the toxic metals, which significantly reduce the growth of plants even at a low concentration. Cd interacts with various plant mechanisms at the physiological and antioxidant levels, resulting in decreased plant growth. This research was conducted to exploit the potential of synergistic application of zinc oxide nanoparticles (ZnO NPs) and Moringa oleifera leaf extract in mitigation of Cd stress in linseed (Linum usitatissimum L.) plants. The main aim of this study was to exploit the role of M. oleifera leaf extract and ZnO NPs on Cd-exposed linseed plants. Cd concentrations in the root and shoot of linseed plants decreased after administration of MZnO NPs. Growth parameters of plants, antioxidant system, and physiochemical parameters decreased as the external Cd level increased. The administration of MZnO NPs to the Cd-stressed linseed plant resulted in a significant increase in growth and antioxidant enzymes. Furthermore, the antioxidative enzymes superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) exhibited a considerable increase in the activity when MZnO NPs were applied to Cd-stressed seedlings. The introduction of MZnO NPs lowered the levels of malondialdehyde (MDA) and hydrogen peroxide (H2O2) in the linseed plant grown in Cd-toxic conditions. The NPs decreased electrolyte leakage (EL) in Cd-stressed linseed leaves and roots. It was concluded that synergistic application of ZnO NPs and M. oleifera leaf extract alleviated Cd stress in linseed plants through enhanced activity of antioxidant enzymes. It is proposed that role of MZnO NPs may be evaluated for mitigation of numerous abiotic stresses.
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Affiliation(s)
- Musarrat Ramzan
- Department of Botany, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
- *Correspondence: Musarrat Ramzan
| | - Fazila Ayub
- Department of Botany, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Anis Ali Shah
- Department of Botany, Division of Science and Technology, University of Education, Lahore, Pakistan
- Anis Ali Shah
| | - Gul Naz
- Faculty of Science, Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
- Gul Naz
| | - Adnan Noor Shah
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Punjab, Pakistan
- Adnan Noor Shah
| | - Aqsa Malik
- Department of Botany, University of Narowal, Narowal, Pakistan
| | - Rehana Sardar
- Institute of Botany, University of the Punjab, Lahore, Pakistan
| | - Arkadiusz Telesiński
- Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, West Pomeranian University of Technology, Szczecin, Poland
| | - Hazem M. Kalaji
- Department of Plant Physiology, Institute of Biology, Warsaw University of Life Science, Warsaw, Poland
- Institute of Technology and Life Sciences - National Research Institute, Raszyn, Poland
| | | | - Hamada Abd Elgawad
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
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17
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Wala M, Kołodziejek J, Mazur J, Cienkowska A. Reactions of two xeric-congeneric species of Centaurea (Asteraceae) to soils with different pH values and iron availability. PeerJ 2021; 9:e12417. [PMID: 34824914 PMCID: PMC8590394 DOI: 10.7717/peerj.12417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 10/10/2021] [Indexed: 11/20/2022] Open
Abstract
Centaurea scabiosa L. and C. stoebe Tausch are known to co-exist naturally in two extremely different types of open dry habitats in the temperate zone, alkaline xerothermic grasslands and acidic dry grasslands. However, knowledge about their preferences to edaphic conditions, including soil acidity (pH), and iron (Fe) availability is scarce. Therefore, experimental comparison of soil requirements (acidic Podzol vs alkaline Rendzina) of these species was carried out. The study was designed as a pot experiment and conducted under field conditions. Fe availability was increased by application of Fe-HBED. Reactions of plants to edaphic conditions were determined using growth measurements, leaf morphometric measurements, chlorosis scoring, chlorophyll content and chlorophyll a fluorescence (OJIP) quantification as well as determination of element content (Ca, Mg, Fe, Mn, Zn and Cu). Growth and leaf morphometrical traits of the studied congeneric species were affected similarly by the soil type and differently by the chelate treatment. Increased availability of Fe in Rendzina contrasted the species, as treatment with 25 µmol Fe-HBED kg−1 soil promoted growth only in C. stoebe. Both species turned out to be resistant to Fe-dependent chlorosis which was also reflected in only minor changes in chlorophyll a fluorescence parameters. Both species showed relatively low nutritional demands. Surprisingly, Fe-HBED did not stimulate Fe acquisition in the studied species, nor its translocation along the root:shoot axis. Furthermore, contrary to expectations, C. scabiosa took up less Fe from the acidic than alkaline soil. C. scabiosa not only absorbed more Ca and Zn but also translocated greater amounts of these elements to shoots than C. stoebe. Both species acquired more Mg on Podzol than on Rendzina which suggests adaptation allowing avoidance of aluminum (Al) toxicity on acidic soils. Overall, it seems that C. scabiosa prefers alkaline soils, whilst C. stoebe prefers acidic ones.
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Affiliation(s)
- Mateusz Wala
- Department of Geobotany and Plant Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Łódź, Łódź Voivodeship, Poland
| | - Jeremi Kołodziejek
- Department of Geobotany and Plant Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Łódź, Łódź Voivodeship, Poland
| | - Janusz Mazur
- Laboratory of Computer and Analytical Techniques, Faculty of Biology and Environmental Protection, University of Lodz, Łódź, Łódź Voivodeship, Poland
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18
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Rideout NK, Compson ZG, Monk WA, Bruce MR, Baird DJ. The Beautiful and the Dammed: Defining Multi-Stressor Disturbance Regimes in an Atlantic River Floodplain Wetland. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.553094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Natural hydrological fluctuations within river floodplains generate habitat diversity through variable connections between habitat patches and the main river channel. Human modification of floodplains can alter the magnitude and frequency of large floods and associated sediment movement by interrupting these floodplain connections. The lower Wolastoq | Saint John River and its associated floodplain wetlands are experiencing anthropogenic disturbances arising from climate change, increased urbanization in the watershed, changing upstream agricultural landscape practices, and, most notably, major road and dam construction. By comparing digitized aerial images, we identified key periods of change in wetland extent throughout an ecologically significant component of the floodplain, the Grand Lake Meadows and Portobello Creek wetland complex, with significant erosion evident in coves and backwater areas across the landscape following dam construction and significant accretion around the Jemseg River following highway construction. Connectivity and hydrological regime also influenced other habitat components, namely nutrients and metals retention, as well as the composition of the local macrophyte community. These findings address two key aspects of floodplain management: (1) understanding how hydrological alteration has historically influenced floodplain wetlands can inform us of how the ecosystem may respond under future conditions, such as climate change, and (2) the mechanisms by which habitat diversity and disturbance regimes filter biological communities, with the potential for patches to host a rich biodiversity continuously supporting critical ecosystem functions.
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Dong J, Chen W, Feng J, Liu X, Xu Y, Wang C, Yang W, Du X. Facile, Smart, and Degradable Metal-Organic Framework Nanopesticides Gated with Fe III-Tannic Acid Networks in Response to Seven Biological and Environmental Stimuli. ACS APPLIED MATERIALS & INTERFACES 2021; 13:19507-19520. [PMID: 33856772 DOI: 10.1021/acsami.1c04118] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Nanopesticides were selected as one of the top 10 emerging technologies in chemistry that will change our world in 2019. Facile, smart, and degradable metal-organic framework MIL-101(FeIII) nanopesticides gated with FeIII-tannic acid (TA) networks are created using a universal strategy. The capping of the FeIII-TA network gatekeepers is instinctively oriented by the coordinatively unsaturated FeIII sites on the surfaces of the MIL-101(FeIII) nanocarriers; thus, their combination is perfectly matched. This is the first example that one smart gated nanoparticle is integrated with seven stimuli-responsive performances to meet the diverse controlled release of encapsulated cargos by the disassembly of the gatekeepers and/or the degradation of the nanocarriers. More importantly, each of the seven stimuli (acidic/alkaline pH, H2O2, glutathione, phosphates, ethylenediaminetetraacetate, and near-infrared light of sunlight) is closely related to the biological and natural environments of crops, and the biocompatible nanocarriers are eventually degraded against bioaccumulation even if the nanopesticides enter crops. These mechanisms of the stimuli-responsive controlled release are identified and clearly elaborated. It is found that the natural polyphenol can improve the wettability of aqueous droplets of nanopesticides on model hydrophobic foliage for pesticide adhesion and retention. The nanopesticides encapsulated with the fungicide tebuconazole show high fungicidal activities against pathogenic fungi Rhizoctonia solani (rice sheath blight) and Fusarium graminearum (wheat head blight); good safety on seed germination, seedling emergence, and plant height of wheat by seed dressing; and satisfactory control efficacy in wheat powdery mildew caused by Blumeria graminis in the greenhouse. The nanopesticides have potential applications in the field for high quality and yield of agricultural production.
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Affiliation(s)
- Jiangtao Dong
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Wang Chen
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, People's Republic of China
| | - Jianguo Feng
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, People's Republic of China
| | - Xiaoqing Liu
- School of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China
| | - Yang Xu
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Chen Wang
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
| | - Wenchao Yang
- School of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China
| | - Xuezhong Du
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, People's Republic of China
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20
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Single-cell visualization and quantification of trace metals in Chlamydomonas lysosome-related organelles. Proc Natl Acad Sci U S A 2021; 118:2026811118. [PMID: 33879572 DOI: 10.1073/pnas.2026811118] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The acidocalcisome is an acidic organelle in the cytosol of eukaryotes, defined by its low pH and high calcium and polyphosphate content. It is visualized as an electron-dense object by transmission electron microscopy (TEM) or described with mass spectrometry (MS)-based imaging techniques or multimodal X-ray fluorescence microscopy (XFM) based on its unique elemental composition. Compared with MS-based imaging techniques, XFM offers the additional advantage of absolute quantification of trace metal content, since sectioning of the cell is not required and metabolic states can be preserved rapidly by either vitrification or chemical fixation. We employed XFM in Chlamydomonas reinhardtii to determine single-cell and organelle trace metal quotas within algal cells in situations of trace metal overaccumulation (Fe and Cu). We found up to 70% of the cellular Cu and 80% of Fe sequestered in acidocalcisomes in these conditions and identified two distinct populations of acidocalcisomes, defined by their unique trace elemental makeup. We utilized the vtc1 mutant, defective in polyphosphate synthesis and failing to accumulate Ca, to show that Fe sequestration is not dependent on either. Finally, quantitation of the Fe and Cu contents of individual cells and compartments via XFM, over a range of cellular metal quotas created by nutritional and genetic perturbations, indicated excellent correlation with bulk data from corresponding cell cultures, establishing a framework to distinguish the nutritional status of single cells.
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21
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Nguyen A, Richter O, Le BV, Phuong NTK, Dinh KC. Long-Term Heavy Metal Retention by Mangroves and Effect on Its Growth: A Field Inventory and Scenario Simulation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17239131. [PMID: 33297439 PMCID: PMC7729893 DOI: 10.3390/ijerph17239131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/30/2020] [Accepted: 12/05/2020] [Indexed: 11/29/2022]
Abstract
The ability of mangroves in taking up and storing heavy metal (HM) helps in reducing HM pollution. However, HMs likewise adversely affect the growth of mangroves. We assess the effects of the long-term soil HMs enrichment on the growth of Rhizophora apiculata forest in the Can Gio Mangrove Forest (Southern Vietnam) in different environmental conditions of soil salinity, ground elevation, and tree density based on a novel set of measured data. These data were analyzed and were used to calibrate and validate for a tree growth model with influencing factors salinity, elevation, tree density, and heavy metals content. Three scenario simulations were performed to predict the mangrove dynamics under different levels of heavy metal pollution in combined environmental conditions of salinity and elevation. Simulation results show the decline of total forest biomass from 1,750,000 tons (baseline scenario with no HM pollution) down to 850,000 tons and 350,000 tons for the current HM pollution and double HM pollution scenarios, respectively. Both data analysis and simulations have shown that although mangroves can assist in reducing HM pollution, the quality and health of this ecosystem will be severely affected if the environment is excessively polluted. In addition, a data-and-model driven management tool is devised for the sustainable management of the mangrove environmental resources.
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Affiliation(s)
- Anh Nguyen
- Institute for Environment and Resources, Vietnam National University Ho Chi Minh City, 142 To Hien Thanh, District 10, Ho Chi Minh City 72506, Vietnam; (B.V.Q.L.); (K.C.D.)
- Correspondence: ; Tel.: +84-763-323-328
| | - Otto Richter
- Institute of Geoecology, Technical University of Braunschweig, 38106 Braunschweig, Germany;
| | - Bao V.Q. Le
- Institute for Environment and Resources, Vietnam National University Ho Chi Minh City, 142 To Hien Thanh, District 10, Ho Chi Minh City 72506, Vietnam; (B.V.Q.L.); (K.C.D.)
| | - Nguyen Thi Kim Phuong
- National Institute of Applied Mechanics and Informatics, Vietnam Academy of Science and Technology, 291 Dien Bien Phu, District 3, Ho Chi Minh City 722007, Vietnam;
| | - Kim Chi Dinh
- Institute for Environment and Resources, Vietnam National University Ho Chi Minh City, 142 To Hien Thanh, District 10, Ho Chi Minh City 72506, Vietnam; (B.V.Q.L.); (K.C.D.)
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Ugolini F, Baronti S, Lanini GM, Maienza A, Ungaro F, Calzolari C. Assessing the influence of topsoil and technosol characteristics on plant growth for the green regeneration of urban built sites. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 273:111168. [PMID: 32777645 DOI: 10.1016/j.jenvman.2020.111168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 07/07/2020] [Accepted: 07/31/2020] [Indexed: 06/11/2023]
Abstract
Achieving urban regeneration through the creation of new green areas is a widely promoted strategy to improve the quality of life in densely built neighborhoods. "De-sealing" actions can compensate for the creation of new built-up areas, as demonstrated by the EU-funded Life + project 'Save our Soils for LIFE' (SOS4LIFE, LIFE15ENV/IT/000225), in which guidelines for de-sealing have been published. For the generation of new urban greening, it is important to know the characteristics of the soils used in order to better define the most appropriate landscaping decisions and management practices. In this study the physical and chemical characteristics of topsoils and technosols (soils enclosed under sealed surfaces) were assessed in relation to growth and leaf gas exchanges in two ornamental species (V. tinus and E. x ebbingei), in two partner municipalities of the project, Carpi and San Lazzaro di Savena (north-east Italy), during a three-year trial. Results of the study confirmed the dependence of plant growth on the chemical evolution of the soils, and identified the optimal soil moisture range based on soil texture and soil-plant water relationships. In addition, the technosols were found to actually be beneficial for plant growth, due to their high drainage capacity and nutrient content.
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Affiliation(s)
- Francesca Ugolini
- Institute of Bioeconomy - National Research Council, via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy.
| | - Silvia Baronti
- Institute of Bioeconomy - National Research Council, via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| | - Giuseppe Mario Lanini
- Institute of Bioeconomy - National Research Council, via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| | - Anita Maienza
- Institute of Bioeconomy - National Research Council, via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| | - Fabrizio Ungaro
- Institute of Bioeconomy - National Research Council, via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| | - Costanza Calzolari
- Institute of Bioeconomy - National Research Council, via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
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Impact of Green Synthesized Metal Oxide Nanoparticles on Seed Germination and Seedling Growth of Vigna radiata (Mung Bean) and Cajanus cajan (Red Gram). J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01551-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Shotyk W, Javed MB, Noernberg T. Trace elements in Labrador Tea (Rhododendron groenlandicum): How predominant sources to the plants impact the chemical composition of hot water extracts. ENVIRONMENTAL RESEARCH 2020; 183:109272. [PMID: 32113170 DOI: 10.1016/j.envres.2020.109272] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 02/17/2020] [Accepted: 02/17/2020] [Indexed: 06/10/2023]
Abstract
Labrador Tea (Rhododendron groenlandicum) has been an important food and medicinal plant to First Nations communities in North America for millenia, but little is known of its geochemical properties. Using plants from 10 sites in 4 provinces, including pristine and industrial regions, and employing the metal-free, ultraclean SWAMP laboratory facilities and procedures, we provide an estimate of the natural abundance of trace elements in the leaves, and the extent of their release during hot water extraction. Elements decrease in abundance in the order Mn > Al > Fe > Zn > Cu > Ni > V > Pb > La > Mo > Y > La > Tl > Cd > Th > Ag. The greatest concentrations of conservative, lithophile elements such as Al, La, Th and Y, are found in samples collected on lands reclaimed from open pit bitumen mines in northern Alberta, reflecting elevated inputs of atmospheric dusts. In contrast, micronutrients such as Cu and Zn are remarkably uniform which suggests that these are supplied almost exclusively by plant uptake via roots. Deionized, reverse osmosis water is more effective in removing some elements (e.g. Al, La, Y, Fe, Zn, Cd) whereas others are more readily extracted using groundwater (e.g. Cu, Ni, Pb); V behaves independently of water composition. In both types of water, the elements most readily extracted are plant micronutrients (Mn, Ni, Cu, and Zn) whereas those supplied primarily by dust exhibit much lower yields; Al shows behaviour intermediate between these two extremes. While element concentrations in the infusions increase with increasing concentrations in the leaves, the abundance of potentially toxic chalcophile elements such as Cd, Pb, Sb and Tl in the infusions are extremely low (ng/l). Plants from British Columbia, Ontario and Quebec provide evidence of atmospheric Pb contamination, yielding greater ratios of Pb/La compared to the samples from Alberta where crustal values are found. Given that this plant is common and found across the northern half of the continent, it shows great promise as a tool for biomonitoring of air quality. For consumers, Labrador Tea may represent an important dietary source of Mn.
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Affiliation(s)
- William Shotyk
- Bocock Chair for Agriculture and the Environment, Department of Renewable Resources, University of Alberta, 348B South Academic Building, Edmonton, T6G 2H1, Alberta, Canada.
| | | | - Tommy Noernberg
- Department of Renewable Resources, University of Alberta, T6G 2H1, Canada.
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25
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Saito S, Uozumi N. Calcium-Regulated Phosphorylation Systems Controlling Uptake and Balance of Plant Nutrients. FRONTIERS IN PLANT SCIENCE 2020; 11:44. [PMID: 32117382 PMCID: PMC7026023 DOI: 10.3389/fpls.2020.00044] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 01/14/2020] [Indexed: 05/18/2023]
Abstract
Essential elements taken up from the soil and distributed throughout the whole plant play diverse roles in different tissues. Cations and anions contribute to maintenance of intracellular osmolarity and the formation of membrane potential, while nitrate, ammonium, and sulfate are incorporated into amino acids and other organic compounds. In contrast to these ion species, calcium concentrations are usually kept low in the cytosol and calcium displays unique behavior as a cytosolic signaling molecule. Various environmental stresses stimulate increases in the cytosolic calcium concentration, leading to activation of calcium-regulated protein kinases and downstream signaling pathways. In this review, we summarize the stress responsive regulation of nutrient uptake and balancing by two types of calcium-regulated phosphorylation systems: CPK and CBL-CIPK. CPK is a family of protein kinases activated by calcium. CBL is a group of calcium sensor proteins that interact with CIPK kinases, which phosphorylate their downstream targets. In Arabidopsis, quite a few ion transport systems are regulated by CPKs or CBL-CIPK complexes, including channels/transporters that mediate transport of potassium (KAT1, KAT2, GORK, AKT1, AKT2, HAK5, SPIK), sodium (SOS1), ammonium (AMT1;1, AMT1;2), nitrate and chloride (SLAC1, SLAH2, SLAH3, NRT1.1, NRT2.4, NRT2.5), and proton (AHA2, V-ATPase). CPKs and CBL-CIPKs also play a role in C/N nutrient response and in acquisition of magnesium and iron. This functional regulation by calcium-dependent phosphorylation systems ensures the growth of plants and enables them to acquire tolerance against various environmental stresses. Calcium serves as the key factor for the regulation of membrane transport systems.
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Affiliation(s)
- Shunya Saito
- *Correspondence: Shunya Saito, ; Nobuyuki Uozumi,
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26
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Blasco B, Navarro-León E, Ruiz JM. Study of Zn accumulation and tolerance of HMA4 TILLING mutants of Brassica rapa grown under Zn deficiency and Zn toxicity. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 287:110201. [PMID: 31481218 DOI: 10.1016/j.plantsci.2019.110201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 07/20/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Nowadays, Zinc (Zn) deficiency is the most widespread micronutrient deficiency but simultaneously Zn toxicity is produced due to environmental pollution. A potential method to alleviate Zn deficiency and to reduce Zn concentration in soils is through the generation of plants with enhanced capacity for Zn accumulation and higher tolerance. This could be achieved through the modification of HMA4 transporter. BraA.hma4a-3 is a TILLING mutant plant that presents one modification in HMA4 transporter. Thus, in this study we analyzed the potential of BraA.hma4a-3 for Zn accumulation and Zn deficiency and toxicity tolerance. BraA.hma4a-3 and parental R-o-18 plants were grown with different Zn doses: 1 μM ZnSO4 (Control), 0.01 μM ZnSO4 (Zn deficiency) and 100 μM ZnSO4 (Zn toxicity). Parameters of biomass, Zn concentration, photosynthesis, oxidative stress, N metabolism and amino acids (AAs) were measured. BraA.hma4a-3 did not affect plant biomass but did increase Zn accumulation in leaves under an adequate Zn supply and Fe under control and Zn deficiency doses. Regarding stress tolerance parameters and N metabolism, BraA.hma4a did not produce alterations under control conditions. In addition, under Zn toxicity, parameters suggest a greater tolerance. Briefly, the obtained results point to BraA.hma4a-3 as a useful mutant to increase Zn accumulation.
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Affiliation(s)
- Begoña Blasco
- Department of Plant Physiology, Faculty of Sciences, University of Granada, 18071 Granada, Spain.
| | - Eloy Navarro-León
- Department of Plant Physiology, Faculty of Sciences, University of Granada, 18071 Granada, Spain.
| | - Juan Manuel Ruiz
- Department of Plant Physiology, Faculty of Sciences, University of Granada, 18071 Granada, Spain.
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27
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Horst BG, Stewart EM, Nazarian AA, Marletta MA. Characterization of a Carbon Monoxide-Activated Soluble Guanylate Cyclase from Chlamydomonas reinhardtii. Biochemistry 2019; 58:2250-2259. [DOI: 10.1021/acs.biochem.9b00190] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin G. Horst
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Edna M. Stewart
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California 94720, United States
| | - Aren A. Nazarian
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California 94720, United States
| | - Michael A. Marletta
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California 94720, United States
- California Institute for Quantitative Biosciences, University of California, Berkeley, Berkeley, California 94720, United States
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28
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Wu Q, Leung JYS, Du Y, Kong D, Shi Y, Wang Y, Xiao T. Trace metals in e-waste lead to serious health risk through consumption of rice growing near an abandoned e-waste recycling site: Comparisons with PBDEs and AHFRs. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 247:46-54. [PMID: 30654253 DOI: 10.1016/j.envpol.2018.12.051] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 12/02/2018] [Accepted: 12/16/2018] [Indexed: 06/09/2023]
Abstract
Despite the endeavour to eradicate informal e-waste recycling, remediation of polluted sites is not mandatory in many developing countries and thus the hazard of pollutants remaining in soil is often overlooked. It is noteworthy that a majority of previous studies only analysed a few pollutants in e-waste to reflect the impact of informal e-waste recycling. However, the actual impact may have been largely underestimated since e-waste contains various groups of pollutants and the effect of some emerging pollutants in e-waste remains unexplored. Thus, this study examined the contamination of metals, PBDEs and AHFRs in the vicinity of an abandoned e-waste recycling site. The accumulation and translocation of these pollutants in rice plants cultivated at the nearby paddy field were measured to estimate the health risk through rice consumption. We revealed that the former e-waste burning site was still seriously contaminated with some metals (e.g. Sn, Sb and Ag, Igeo > 5), PBDEs (Igeo > 3) and AHFRs (Igeo > 3), which can disperse to the nearby paddy field and stream. The rice plants can effectively absorb some metals (e.g. Mo, Cr and Mn, BCF > 1), but not PBDEs and AHFRs (BCF < 0.15), from soil and translocate them to the leaves. Alarmingly, the health risk through rice consumption was high primarily due to Sb and Sn (HQ > 20), whereas PBDEs and AHFRs had limited contribution (HQ < 0.08). Our results imply that abandoned e-waste recycling sites still act as the pollution source, jeopardising the surrounding environment and human health. Since some trace metals (e.g. Sb and Sn) are seldom monitored, the impact of informal e-waste recycling would be more notorious than previously thought. Remediation work should be conducted promptly in abandoned e-waste recycling sites to protect the environment and human health.
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Affiliation(s)
- Qihang Wu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, China
| | - Jonathan Y S Leung
- School of Biological Sciences, The University of Adelaide, Adelaide, 5005, Australia.
| | - Yongming Du
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, China; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Deguan Kong
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, China; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Yongfeng Shi
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, China; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Yuqi Wang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Tangfu Xiao
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
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29
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Azevedo R, Rodriguez E, Mendes RJ, Mariz-Ponte N, Sario S, Lopes JC, Ferreira de Oliveira JMP, Santos C. Inorganic Hg toxicity in plants: A comparison of different genotoxic parameters. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 125:247-254. [PMID: 29477088 DOI: 10.1016/j.plaphy.2018.02.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/12/2018] [Accepted: 02/13/2018] [Indexed: 06/08/2023]
Abstract
Inorganic Mercury (Hg) contamination persists an environmental problem, but its cyto- and genotoxicity in plants remains yet unquantified. To determine the extent of Hg-induced cyto- and genotoxicity, and assess most sensitive endpoints in plants, Pisum sativum L. seedlings were exposed for 14 days to different HgCl2 concentrations up to 100 μM. Shoots and roots from hydroponic exposure presented growth impairment and/or morphological disorders for doses >1 μM, being the roots more sensitive. Plant growth, ploidy changes, clastogenicity (HPCV), cell cycle dynamics (G1-S-G2), Comet-tail moment (TM), Comet-TD, Mitotic-index (MI) and cell proliferation index (CPI) were used to evaluate Hg-induced cyto/genotoxicity. Both leaf and root DNA-ploidy levels, assessed by flow cytometry (FCM), remained unaltered after exposure. Root cell cycle impairment occurred at lower doses (≥1 μM) than structural DNA damages (≥10 μM). Cytostatic effects depended on the Hg concentration, with delays during S-phase at lower doses, and arrests at G1 at higher ones. This arrest was paralleled with decreases of both mitotic index (MI) and cell proliferation index (CPI). DNA fragmentation, assessed by the Comet assay parameters of TD and TM, could be visualized for conditions ≥10 μM, while FCM-clastogenic parameter (FPCV) and micronuclei (MNC) were only altered in roots exposed to 100 μM. We demonstrate that inorganic-Hg induced cytostaticity is detectable even at 1 μM (a value found in contaminated sites), while structural DNA breaks/damage are only visualized in plants at concentrations ≥10 μM. We also demonstrate that among the different techniques tested for cyto- and genotoxicity, TD and TM Comet endpoints were more sensitive than FPCV or MNC. Regarding cytostatic effects, cell cycle analysis by FCM, including the difference in % cell cycle phases and CPI were more sensitive than MI or MNC frequency. Our data contribute to better understand Hg cyto- and genotoxicity in plants and to understand the information and sensitivity provided by each of the genotoxic techniques used.
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Affiliation(s)
- Raquel Azevedo
- Laboratory of Biotechnology and Cytomics, University of Aveiro, 3810-123, Aveiro, Portugal
| | - Eleazar Rodriguez
- Laboratory of Biotechnology and Cytomics, University of Aveiro, 3810-123, Aveiro, Portugal
| | - Rafael José Mendes
- iB(2)Lab, Department of Biology, Faculty of Sciences, LAQV/REQUIMTE, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal
| | - Nuno Mariz-Ponte
- iB(2)Lab, Department of Biology, Faculty of Sciences, LAQV/REQUIMTE, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal
| | - Sara Sario
- iB(2)Lab, Department of Biology, Faculty of Sciences, LAQV/REQUIMTE, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal
| | - José Carlos Lopes
- Department of Physics, University of Aveiro, 3810-123, Aveiro, Portugal
| | - José Miguel P Ferreira de Oliveira
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, 4050-313, Porto, Portugal
| | - Conceição Santos
- iB(2)Lab, Department of Biology, Faculty of Sciences, LAQV/REQUIMTE, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal.
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30
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Yadav K, Patel P, Srivastava AK, Ganapathi TR. Overexpression of native ferritin gene MusaFer1 enhances iron content and oxidative stress tolerance in transgenic banana plants. PLoS One 2017; 12:e0188933. [PMID: 29190821 PMCID: PMC5708808 DOI: 10.1371/journal.pone.0188933] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 11/15/2017] [Indexed: 11/30/2022] Open
Abstract
Iron is an indispensable element for plant growth and defense and hence it is essential to improve the plant's ability to accumulate iron. Besides, it is also an important aspect for human health. In view of this, we attempted to increase the iron content in banana cultivar Rasthali using MusaFer1 as a candidate gene. Initially, the expression of all five genes of the MusaFer family (MusaFer1-5) was quantified under iron-excess and -deficient conditions. The supplementation of 250 and 350 μM iron enhanced expression of all MusaFer genes; however, MusaFer1 was increased maximally by 2- and 4- fold in leaves and roots respectively. Under iron deficient condition, all five MusaFer genes were downregulated, indicating their iron dependent regulation. In MusaFer1 overexpressing lines, iron content was increased by 2- and 3-fold in leaves and roots respectively, as compared with that of untransformed lines. The increased iron was mainly localized in the epidermal regions of petiole. The analysis of MusaFer1 promoter indicated that it might control the expression of iron metabolism related genes and also other genes of MusaFer family. MusaFer1 overexpression led to downregulated expression of MusaFer3, MusaFer4 and MusaFer5 in transgenic leaves which might be associated with the plant's compensatory mechanism in response to iron flux. Other iron metabolism genes like Ferric reductase (FRO), transporters (IRT, VIT and YSL) and chelators (NAS, DMAS and NAAT) were also differentially expressed in transgenic leaf and root, suggesting the multifaceted impact of MusaFer1 towards iron uptake and organ distribution. Additionally, MusaFer1 overexpression increased plant tolerance against methyl viologen and excess iron which was quantified in terms of photosynthetic efficiency and malondialdehyde content. Thus, the study not only broadens our understanding about iron metabolism but also highlights MusaFer1 as a suitable candidate gene for iron fortification in banana.
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Affiliation(s)
- Karuna Yadav
- Plant Cell Culture Technology Section, Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India
| | - Prashanti Patel
- Plant Cell Culture Technology Section, Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India
| | - Ashish Kumar Srivastava
- Plant Stress Physiology and Biotechnology Section, Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India
| | - T. R. Ganapathi
- Plant Cell Culture Technology Section, Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India
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31
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Miller RJ, Muller EB, Cole B, Martin T, Nisbet R, Bielmyer-Fraser GK, Jarvis TA, Keller AA, Cherr G, Lenihan HS. Photosynthetic efficiency predicts toxic effects of metal nanomaterials in phytoplankton. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 183:85-93. [PMID: 28039777 DOI: 10.1016/j.aquatox.2016.12.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 12/05/2016] [Accepted: 12/10/2016] [Indexed: 06/06/2023]
Abstract
High Throughput Screening (HTS) using in vitro assessments at the subcellular level has great promise for screening new chemicals and emerging contaminants to identify high-risk candidates, but their linkage to ecological impacts has seldom been evaluated. We tested whether a battery of subcellular HTS tests could be used to accurately predict population-level effects of engineered metal nanoparticles (ENPs) on marine phytoplankton, important primary producers that support oceanic food webs. To overcome well-known difficulties of estimating ecologically meaningful toxicity parameters, we used novel Dynamic Energy Budget and Toxicodynamic (DEBtox) modeling techniques to evaluate impacts of ENPs on population growth rates. Our results show that population growth was negatively impacted by all four ENPs tested, but the HTS tests assessing many cell/physiological functions lacked predictive power at the population level. However, declining photosynthetic efficiency, a traditional physiological endpoint for photoautotrophs, was a good predictor of population level effects in phytoplankton. DEBtox techniques provided robust estimates of EC10 for population growth rates in exponentially growing batch cultures of phytoplankton, and should be widely useful for ecotoxicological testing. Adoption of HTS approaches for ecotoxicological assessment should carefully evaluate the predictive power of specific assays to minimize the risk that effects at higher levels of biological organization may go undetected.
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Affiliation(s)
- Robert J Miller
- Marine Science Institute, University of California, Santa Barbara, CA, USA.
| | - Erik B Muller
- Marine Science Institute, University of California, Santa Barbara, CA, USA
| | - Bryan Cole
- University of California Davis Bodega Marine Laboratory, University of California Davis, Bodega Bay, CA, USA
| | - Tyronne Martin
- Bren School of Environmental Science and Management, University of California Santa Barbara, CA, USA
| | - Roger Nisbet
- Department of Ecology Evolution and Marine Biology, University of California Santa Barbara, CA, USA
| | | | | | - Arturo A Keller
- Marine Science Institute, University of California, Santa Barbara, CA, USA
| | - Gary Cherr
- University of California Davis Bodega Marine Laboratory, University of California Davis, Bodega Bay, CA, USA; Department of Environmental Toxicology and Nutrition, University of California Davis, Davis, CA, USA
| | - Hunter S Lenihan
- Bren School of Environmental Science and Management, University of California Santa Barbara, CA, USA
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32
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Tsednee M, Huang YC, Chen YR, Yeh KC. Identification of metal species by ESI-MS/MS through release of free metals from the corresponding metal-ligand complexes. Sci Rep 2016; 6:26785. [PMID: 27240899 PMCID: PMC4886218 DOI: 10.1038/srep26785] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 05/09/2016] [Indexed: 01/06/2023] Open
Abstract
Electrospray ionization-mass spectrometry (ESI-MS) is used to analyze metal species in a variety of samples. Here, we describe an application for identifying metal species by tandem mass spectrometry (ESI-MS/MS) with the release of free metals from the corresponding metal-ligand complexes. The MS/MS data were used to elucidate the possible fragmentation pathways of different metal-deoxymugineic acid (-DMA) and metal-nicotianamine (-NA) complexes and select the product ions with highest abundance that may be useful for quantitative multiple reaction monitoring. This method can be used for identifying different metal-ligand complexes, especially for metal species whose mass spectra peaks are clustered close together. Different metal-DMA/NA complexes were simultaneously identified under different physiological pH conditions with this method. We further demonstrated the application of the technique for different plant samples and with different MS instruments.
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Affiliation(s)
- Munkhtsetseg Tsednee
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529 Taiwan
| | - Yu-Chen Huang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529 Taiwan
| | - Yet-Ran Chen
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529 Taiwan
| | - Kuo-Chen Yeh
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529 Taiwan
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33
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Feng H, Qian Y, Gallagher FJ, Zhang W, Yu L, Liu C, Jones KW, Tappero R. Synchrotron micro-scale measurement of metal distributions in Phragmites australis and Typha latifolia root tissue from an urban brownfield site. J Environ Sci (China) 2016; 41:172-182. [PMID: 26969063 DOI: 10.1016/j.jes.2015.07.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 06/12/2015] [Accepted: 07/08/2015] [Indexed: 06/05/2023]
Abstract
Liberty State Park in New Jersey, USA, is a "brownfield" site containing various levels of contaminants. To investigate metal uptake and distributions in plants on the brownfield site, Phragmites australis and Typha latifolia were collected in Liberty State Park during the growing season (May-September) in 2011 at two sites with the high and low metal loads, respectively. The objective of this study was to understand the metal (Fe, Mn, Cu, Pb and Zn) concentration and spatial distributions in P. australis and T. latifolia root systems with micro-meter scale resolution using synchrotron X-ray microfluorescence (μXRF) and synchrotron X-ray computed microtomography (μCMT) techniques. The root structure measurement by synchrotron μCMT showed that high X-ray attenuation substance appeared in the epidermis. Synchrotron μXRF measurement showed that metal concentrations and distributions in the root cross-section between epidermis and vascular tissue were statistically different. Significant correlations were found between metals (Cu, Mn, Pb and Zn) and Fe in the epidermis, implying that metals were scavenged by Fe oxides. The results from this study suggest that the expression of metal transport and accumulation within the root systems may be element specific. The information derived from this study can improve our current knowledge of the wetland plant ecological function in brownfield remediation.
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Affiliation(s)
- Huan Feng
- Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ 07043, USA.
| | - Yu Qian
- Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ 07043, USA
| | - Frank J Gallagher
- Urban Forestry Program, Department of Ecology, Evolution and Natural Resources, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
| | - Weiguo Zhang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
| | - Lizhong Yu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
| | - Changjun Liu
- Biological, Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Keith W Jones
- Biological, Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Ryan Tappero
- Photon Sciences Directorate, Brookhaven National Laboratory, Upton, NY 11973, USA
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Villafort Carvalho MT, Pongrac P, Mumm R, van Arkel J, van Aelst A, Jeromel L, Vavpetič P, Pelicon P, Aarts MGM. Gomphrena claussenii, a novel metal-hypertolerant bioindicator species, sequesters cadmium, but not zinc, in vacuolar oxalate crystals. THE NEW PHYTOLOGIST 2015; 208:763-75. [PMID: 26083742 DOI: 10.1111/nph.13500] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 05/05/2015] [Indexed: 05/17/2023]
Abstract
Gomphrena claussenii is a recently described zinc (Zn)- and cadmium (Cd)-hypertolerant Amaranthaceae species displaying a metal bioindicator Zn/Cd accumulation response. We investigated the Zn and Cd distribution in stem and leaf tissues of G. claussenii at the cellular level, and determined metabolite profiles to investigate metabolite involvement in Zn and Cd sequestration. Gomphrena claussenii plants exposed to high Zn and Cd supply were analysed by scanning electron microscopy with energy-dispersive X-ray (SEM-EDX) and micro-proton-induced X-ray emission (micro-PIXE). In addition, gas chromatography-time of flight-mass spectrometry (GC-TOF-MS) was used to determine metabolite profiles on high Zn and Cd exposure. Stem and leaf tissues of G. claussenii plants exposed to control and high Cd conditions showed the abundant presence of calcium oxalate (CaOx) crystals, but on high Zn exposure, their abundance was strongly reduced. Ca and Cd co-localized to the CaOx crystals in Cd-exposed plants. Citrate, malate and oxalate levels were all higher in shoot tissues of metal-exposed plants, with oxalate levels induced 2.6-fold on Zn exposure and 6.4-fold on Cd exposure. Sequestration of Cd in vacuolar CaOx crystals of G. claussenii is found to be a novel mechanism to deal with Cd accumulation and tolerance.
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Affiliation(s)
- Mina T Villafort Carvalho
- Laboratory of Genetics, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands
| | - Paula Pongrac
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, SI-1000, Ljubljana, Slovenia
| | - Roland Mumm
- Plant Research International, Business Unit Bioscience, Wageningen UR, PO Box 16, 6700 AA, Wageningen, the Netherlands
| | - Jeroen van Arkel
- Plant Research International, Business Unit Bioscience, Wageningen UR, PO Box 16, 6700 AA, Wageningen, the Netherlands
| | - Adriaan van Aelst
- Laboratory of Virology, Wageningen Electron Microscopy Centre, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands
| | - Luka Jeromel
- Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Primož Vavpetič
- Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Primož Pelicon
- Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Mark G M Aarts
- Laboratory of Genetics, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands
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Sagova-Mareckova M, Daniel O, Omelka M, Kristufek V, Divis J, Kopecky J. Determination of factors associated with natural soil suppressivity to potato common scab. PLoS One 2015; 10:e0116291. [PMID: 25612311 PMCID: PMC4303419 DOI: 10.1371/journal.pone.0116291] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 12/06/2014] [Indexed: 11/19/2022] Open
Abstract
Common scab of potatoes is a disease, which is difficult to manage due to complex interactions of the pathogenic bacteria (Streptomyces spp.) with soil, microbial community and potato plants. In Bohemian-Moravian Highlands in the Czech Republic two sites (Vyklantice and Zdirec) were selected for a study of common scab disease suppressivity. At both sites, a field with low disease severity occurs next to one with high severity and the situation was regularly observed over four decades although all four fields undergo a crop rotation. In the four fields, quantities of bacteria, actinobacteria and the gene txtB from the biosynthetic gene cluster of thaxtomin, the main pathogenicity factor of common scab, were analyzed by real-time PCR. Microbial community structure was compared by terminal fragment length polymorphism analysis. Soil and potato periderm were characterized by contents of carbon, nitrogen, phosphorus, sulphur, calcium, magnesium, and iron. Quality of organic matter was assessed by high performance liquid chromatography of soil extracts. The study demonstrated that the suppressive character of the fields is locally specific. At Zdirec, the suppressivity was associated with low txtB gene copies in bulk soil, while at Vyklantice site it was associated with low txtB gene copies in the tuberosphere. The differences were discussed with respect to the effect of abiotic conditions at Zdirec and interaction between potato plant and soil microbial community at Vyklantice. Soil pH, Ca soil content or cation concentrations, although different were not in the range to predict the disease severity. Low severity of common scab was associated with low content of soil C, N, C/N, Ca and Fe suggesting that oligotrophic conditions may be favorable to common scab suppression.
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Affiliation(s)
- Marketa Sagova-Mareckova
- Crop Research Institute, Dept. Epidemiology and Ecology of Microorganisms, Prague, Czech Republic
- * E-mail:
| | - Ondrej Daniel
- Crop Research Institute, Dept. Epidemiology and Ecology of Microorganisms, Prague, Czech Republic
| | - Marek Omelka
- Faculty of Mathematics and Physics, Dept. Probability and Mathematical Statistics, Charles University, Prague, Czech Republic
| | - Vaclav Kristufek
- Biology Centre of the Academy of Sciences of the Czech Republic, v. v. i., Institute of Soil Biology, Ceske Budejovice, Czech Republic
| | - Jiri Divis
- Faculty of Agriculture, Dept. Plant Production, University of South Bohemia, Ceske Budejovice, Czech Republic
| | - Jan Kopecky
- Crop Research Institute, Dept. Epidemiology and Ecology of Microorganisms, Prague, Czech Republic
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Jung HI, Gayomba SR, Yan J, Vatamaniuk OK. Brachypodium distachyon as a model system for studies of copper transport in cereal crops. FRONTIERS IN PLANT SCIENCE 2014; 5:236. [PMID: 24910638 PMCID: PMC4039008 DOI: 10.3389/fpls.2014.00236] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 05/11/2014] [Indexed: 05/21/2023]
Abstract
Copper (Cu) is an essential micronutrient that performs a remarkable array of functions in plants including photosynthesis, cell wall remodeling, flowering, and seed set. Of the world's major cereal crops, wheat, barley, and oat are the most sensitive to Cu deficiency. Cu deficient soils include alkaline soils, which occupy approximately 30% of the world's arable lands, and organic soils that occupy an estimated 19% of arable land in Europe. We used Brachypodium distachyon (brachypodium) as a proxy for wheat and other grain cereals to initiate analyses of the molecular mechanisms underlying their increased susceptibility to Cu deficiency. In this report, we focus on members of the CTR/COPT family of Cu transporters because their homologs in A. thaliana are transcriptionally upregulated in Cu-limited conditions and are involved either in Cu uptake from soils into epidermal cells in the root, or long-distance transport and distribution of Cu in photosynthetic tissues. We found that of five COPT proteins in brachypodium, BdCOPT3, and BdCOPT4 localize to the plasma membrane and are transcriptionally upregulated in roots and leaves by Cu deficiency. We also found that BdCOPT3, BdCOPT4, and BdCOPT5 confer low affinity Cu transport, in contrast to their counterparts in A. thaliana that confer high affinity Cu transport. These data suggest that increased sensitivity to Cu deficiency in some grass species may arise from lower efficiency and, possibly, other properties of components of Cu uptake and tissue partitioning systems and reinforce the importance of using brachypodium as a model for the comprehensive analyses of Cu homeostasis in cereal crops.
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Affiliation(s)
| | | | | | - Olena K. Vatamaniuk
- *Correspondence: Olena K. Vatamaniuk, Department of Crop and Soil Sciences, Cornell University, 306 Tower Road, Bradfield Hall, Rm. 608, Ithaca, NY 14853, USA e-mail:
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Shimada K, Nakamura Y, Kawase M, Komatsu K, Saito T, Takahashi K. Establishment of a methodology for identifying Paeoniae Radix based on metallomic analysis. J Nat Med 2013; 68:407-13. [DOI: 10.1007/s11418-013-0795-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 07/15/2013] [Indexed: 11/29/2022]
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Teklić T, Lončarić Z, Kovačević V, Singh BR. Metallic trace elements in cereal grain – a review: how much metal do we eat? Food Energy Secur 2013. [DOI: 10.1002/fes3.24] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Tihana Teklić
- Department of Agroecology Faculty of Agriculture University J. J. Strossmayer in Osijek Kralja Petra Svačića 1d 31000 Osijek Croatia
| | - Zdenko Lončarić
- Department of Agroecology Faculty of Agriculture University J. J. Strossmayer in Osijek Kralja Petra Svačića 1d 31000 Osijek Croatia
| | - Vlado Kovačević
- Department for Plant Production Faculty of Agriculture University J. J. Strossmayer in Osijek Kralja Petra Svačića 1d 31000 Osijek Croatia
| | - Bal Ram Singh
- Department of Plant and Environmental Sciences Norwegian University of Life Sciences PO Box 5003 1432 As Norway
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Karemore A, Pal R, Sen R. Strategic enhancement of algal biomass and lipid in Chlorococcum infusionum as bioenergy feedstock. ALGAL RES 2013. [DOI: 10.1016/j.algal.2013.01.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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40
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Jung HI, Gayomba SR, Rutzke MA, Craft E, Kochian LV, Vatamaniuk OK. COPT6 is a plasma membrane transporter that functions in copper homeostasis in Arabidopsis and is a novel target of SQUAMOSA promoter-binding protein-like 7. J Biol Chem 2012; 287:33252-67. [PMID: 22865877 DOI: 10.1074/jbc.m112.397810] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Among the mechanisms controlling copper homeostasis in plants is the regulation of its uptake and tissue partitioning. Here we characterized a newly identified member of the conserved CTR/COPT family of copper transporters in Arabidopsis thaliana, COPT6. We showed that COPT6 resides at the plasma membrane and mediates copper accumulation when expressed in the Saccharomyces cerevisiae copper uptake mutant. Although the primary sequence of COPT6 contains the family conserved domains, including methionine-rich motifs in the extracellular N-terminal domain and a second transmembrane helix (TM2), it is different from the founding family member, S. cerevisiae Ctr1p. This conclusion was based on the finding that although the positionally conserved Met(106) residue in the TM2 of COPT6 is functionally essential, the conserved Met(27) in the N-terminal domain is not. Structure-function studies revealed that the N-terminal domain is dispensable for COPT6 function in copper-replete conditions but is important under copper-limiting conditions. In addition, COPT6 interacts with itself and with its homolog, COPT1, unlike Ctr1p, which interacts only with itself. Analyses of the expression pattern showed that although COPT6 is expressed in different cell types of different plant organs, the bulk of its expression is located in the vasculature. We also show that COPT6 expression is regulated by copper availability that, in part, is controlled by a master regulator of copper homeostasis, SPL7. Finally, studies using the A. thaliana copt6-1 mutant and plants overexpressing COPT6 revealed its essential role during copper limitation and excess.
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Affiliation(s)
- Ha-il Jung
- Department of Crop and Soil Sciences, Cornell University, Ithaca, New York 14853, USA
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Fu A, Liu H, Yu F, Kambakam S, Luan S, Rodermel S. Alternative oxidases (AOX1a and AOX2) can functionally substitute for plastid terminal oxidase in Arabidopsis chloroplasts. THE PLANT CELL 2012; 24:1579-95. [PMID: 22534126 PMCID: PMC3398565 DOI: 10.1105/tpc.112.096701] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 03/09/2012] [Accepted: 04/10/2012] [Indexed: 05/19/2023]
Abstract
The immutans (im) variegation mutant of Arabidopsis thaliana is caused by an absence of PTOX, a plastid terminal oxidase bearing similarity to mitochondrial alternative oxidase (AOX). In an activation tagging screen for suppressors of im, we identified one suppression line caused by overexpression of AOX2. AOX2 rescued the im defect by replacing the activity of PTOX in the desaturation steps of carotenogenesis. Similar results were obtained when AOX1a was reengineered to target the plastid. Chloroplast-localized AOX2 formed monomers and dimers, reminiscent of AOX regulation in mitochondria. Both AOX2 and AOX1a were present in higher molecular weight complexes in plastid membranes. The presence of these proteins did not generally affect steady state photosynthesis, aside from causing enhanced nonphotochemical quenching in both lines. Because AOX2 was imported into chloroplasts using its own transpeptide, we propose that AOX2 is able to function in chloroplasts to supplement PTOX activity during early events in chloroplast biogenesis. We conclude that the ability of AOX1a and AOX2 to substitute for PTOX in the correct physiological and developmental contexts is a striking example of the capacity of a mitochondrial protein to replace the function of a chloroplast protein and illustrates the plasticity of the photosynthetic apparatus.
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Affiliation(s)
- Aigen Fu
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, Iowa 50011
- College of Life Sciences, Northwest University, Xian, Shanxi 710069, People’s Republic of China
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720
| | - Huiying Liu
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, Iowa 50011
| | - Fei Yu
- College of Life Sciences, Northwest A&F University, Yangling, Shanxi 712100, People’s Republic of China
| | - Sekhar Kambakam
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, Iowa 50011
| | - Sheng Luan
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720
| | - Steve Rodermel
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, Iowa 50011
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Badarau A, Dennison C. Thermodynamics of copper and zinc distribution in the cyanobacterium Synechocystis PCC 6803. Proc Natl Acad Sci U S A 2011; 108:13007-12. [PMID: 21778408 PMCID: PMC3156197 DOI: 10.1073/pnas.1101448108] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Copper is supplied to plastocyanin for photosynthesis and cytochrome c oxidase for respiration in the thylakoids of Synechocystis PCC 6803 by the membrane-bound P-type ATPases CtaA and PacS, and the metallochaperone Atx1. We have determined the Cu(I) affinities of all of the soluble proteins and domains in this pathway. The Cu(I) affinities of the trafficking proteins range from 5 × 10(16) to 5 × 10(17) M(-1) at pH 7.0, consistent with values for homologues. Unusually, Atx1 binds Cu(I) significantly tighter than the metal-binding domains (MBDs) of CtaA and PacS (CtaA(N) and PacS(N)), and equilibrium copper exchange constants of approximately 0.2 are obtained for transfer to the MBDs. Dimerization of Atx1 increases the affinity for Cu(I), but the loop 5 His61 residue has little influence. The MBD of the zinc exporter ZiaA (ZiaA(N)) exhibits an almost identical Cu(I) affinity, and Cu(I) exchange with Atx1, as CtaA(N) and PacS(N), and the relative stabilities of the complexes must enable the metallochaperone to distinguish between the MBDs. The binding of potentially competing zinc to the trafficking proteins has been studied. ZiaA(N) has the highest Zn(II) affinity and thermodynamics could be important for zinc removal from the cell. Plastocyanin has a Cu(I) affinity of 2.6 × 10(17) M(-1), 15-fold tighter than that of the Cu(A) site of cytochrome c oxidase, highlighting the need for specific mechanisms to ensure copper delivery to both of these targets. The narrow range of Cu(I) affinities for the cytoplasmic copper proteins in Synechocystis will facilitate relocation when copper is limiting.
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Affiliation(s)
- Adriana Badarau
- Institute for Cell and Molecular Biosciences, Medical School, Newcastle University, Newcastle upon Tyne NE2 4HH, United Kingdom
| | - Christopher Dennison
- Institute for Cell and Molecular Biosciences, Medical School, Newcastle University, Newcastle upon Tyne NE2 4HH, United Kingdom
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Nouet C, Motte P, Hanikenne M. Chloroplastic and mitochondrial metal homeostasis. TRENDS IN PLANT SCIENCE 2011; 16:395-404. [PMID: 21489854 DOI: 10.1016/j.tplants.2011.03.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 02/25/2011] [Accepted: 03/07/2011] [Indexed: 05/03/2023]
Abstract
Transition metal deficiency has a strong impact on the growth and survival of an organism. Indeed, transition metals, such as iron, copper, manganese and zinc, constitute essential cofactors for many key cellular functions. Both photosynthesis and respiration rely on metal cofactor-mediated electron transport chains. Chloroplasts and mitochondria are, therefore, organelles with high metal ion demand and represent essential components of the metal homeostasis network in photosynthetic cells. In this review, we describe the metal requirements of chloroplasts and mitochondria, the acclimation of their functions to metal deficiency and recent advances in our understanding of their contributions to cellular metal homeostasis, the control of the cellular redox status and the synthesis of metal cofactors.
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Affiliation(s)
- Cécile Nouet
- Functional Genomics and Plant Molecular Imaging, Center for Protein Engineering, Department of Life Sciences (B22), University of Liège, Belgium
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Kropat J, Hong-Hermesdorf A, Casero D, Ent P, Castruita M, Pellegrini M, Merchant SS, Malasarn D. A revised mineral nutrient supplement increases biomass and growth rate in Chlamydomonas reinhardtii. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2011; 66:770-80. [PMID: 21309872 PMCID: PMC3101321 DOI: 10.1111/j.1365-313x.2011.04537.x] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Interest in exploiting algae as a biofuel source and the role of inorganic nutrient deficiency in inducing triacylglyceride (TAG) accumulation in cells necessitates a strategy to efficiently formulate species-specific culture media that can easily be manipulated. Using the reference organism Chlamydomonas reinhardtii, we tested the hypothesis that modeling trace element supplements after the cellular ionome would result in optimized cell growth. We determined the trace metal content of several commonly used Chlamydomonas strains in various culture conditions and developed a revised trace element solution to parallel these measurements. Comparison of cells growing in the revised supplement versus a traditional trace element solution revealed faster growth rates and higher maximum cell densities with the revised recipe. RNA-seq analysis of cultures growing in the traditional versus revised medium suggest that the variation in transcriptomes was smaller than that found between different wild-type strains grown in traditional Hutner's supplement. Visual observation did not reveal defects in cell motility or mating efficiency in the new supplement. Ni²⁺-inducible expression from the CYC6 promoter remained a useful tool, albeit with an increased requirement for Ni²⁺ because of the introduction of an EDTA buffer system in the revised medium. Other advantages include more facile preparation of trace element stock solutions, a reduction in total chemical use, a more consistent batch-to-batch formulation and long-term stability (tested up to 5 years). Under the new growth regime, we analyzed cells growing under different macro- and micronutrient deficiencies. TAG accumulation in N deficiency is comparable in the new medium. Fe and Zn deficiency also induced TAG accumulation, as suggested by Nile Red staining. This approach can be used to efficiently optimize culture conditions for other algal species to improve growth and to assay cell physiology.
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Affiliation(s)
- Janette Kropat
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA
| | - Anne Hong-Hermesdorf
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA
| | - David Casero
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095-1569, USA
| | - Petr Ent
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA
| | - Madeli Castruita
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA
| | - Matteo Pellegrini
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095-1569, USA
- Institutes of Genomic and Proteomics, University of California, Los Angeles, CA 90095-1569, USA
| | - Sabeeha S. Merchant
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA
- Institutes of Genomic and Proteomics, University of California, Los Angeles, CA 90095-1569, USA
| | - Davin Malasarn
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA
- Corresponding author: Davin Malasarn, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, (310) 825-3661,
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Abstract
Almost all living organisms need to obtain molybdenum from the external medium to achieve essential processes for life. Activity of important enzymes such as sulfite oxidase, aldehyde oxidase, xanthine dehydrogenase, and nitrate reductase is strictly dependent on the presence of Mo in its active site. Cells take up Mo in the form of the oxianion molybdate, but the molecular nature of the transporters is still not well known in eukaryotes. MOT1 is the first molybdate transporter identified in plant-type eukaryotic organisms, but it is absent in animal genomes. Here we report a molybdate transporter different from the MOT1 family, encoded by the Chlamydomonas reinhardtii gene MoT2, that is also present in animals including humans. The knockdown of CrMoT2 transcription leads to the deficiency of molybdate uptake activity in Chlamydomonas. In addition, heterologous expression in Saccharomyces cerevisiae of MoT2 genes from Chlamydomonas and humans support the functionality of both proteins as molybdate transporters. Characterization of CrMOT2 and HsMOT2 activities showed an apparent Km of about 550 nM that, though higher than the Km reported for MOT1, still corresponds to high affinity systems. CrMoT2 transcription is activated when extracellular molybdate concentration is low but in contrast to MoT1 is not activated by nitrate. Analysis of protein databases revealed the presence of four motifs present in all the proteins with high similarity to MOT2, that label a previously undescribed family of proteins probably related to molybdate transport. Our results open the way toward the understanding of molybdate transport as part of molybdenum homeostasis and Moco biosynthesis in animals.
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