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Ishizaki T, Tanaka D, Ishibashi K, Takahashi K, Hirata E, Kuroda K. Cell Damage Mechanisms during Cryopreservation in a Zwitterion Solution and Its Alleviation by DMSO. J Phys Chem B 2024; 128:3904-3909. [PMID: 38613503 DOI: 10.1021/acs.jpcb.3c07773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2024]
Abstract
Recently, zwitterions have been proposed as novel cryoprotectants. However, some cells are difficult to cryopreserve using aqueous zwitterion solutions alone. We investigated here the reason for cell damage in such cells, and it was the osmotic pressure after freeze concentration. Furthermore, the addition of dimethyl sulfoxide (DMSO) has been reported to improve the cryoprotective effect in such cells: the zwitterion/DMSO aqueous solution shows a higher cryoprotective effect than the commercial cryoprotectant. This study also clarified the mechanisms underlying the improvement in a cryoprotective effect. The addition of cell-permeable DMSO alleviated the osmotic pressure after the freeze concentration. This alleviation was also found to be a key factor for cryopreserving cell spheroids, while there has been no insight into this phenomenon.
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Affiliation(s)
- Takeru Ishizaki
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan
| | - Daisuke Tanaka
- Research Center of Genetic Resources, National Agriculture and Food Research Organization, Tsukuba 305-8602, Japan
| | - Kojiro Ishibashi
- Cancer Research Institute, Kanazawa University, Kanazawa 920-1192, Japan
| | - Kenji Takahashi
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan
| | - Eishu Hirata
- Cancer Research Institute, Kanazawa University, Kanazawa 920-1192, Japan
- WPI-Nano Life Science Institute, Kanazawa University, Kanazawa 920-1192, Japan
| | - Kosuke Kuroda
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan
- NanoMaterials Research Institute, Kanazawa University, Kanazawa 920-1192, Japan
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Ruan MB, Yu XL, Guo X, Zhao PJ, Peng M. Role of cassava CC-type glutaredoxin MeGRXC3 in regulating sensitivity to mannitol-induced osmotic stress dependent on its nuclear activity. BMC Plant Biol 2022; 22:41. [PMID: 35057736 PMCID: PMC8772167 DOI: 10.1186/s12870-022-03433-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 01/10/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND We previously identified six drought-inducible CC-type glutaredoxins in cassava cultivars, however, less is known about their potential role in the molecular mechanism by which cassava adapted to abiotic stress. RESULTS Herein, we investigate one of cassava drought-responsive CC-type glutaredoxins, namely MeGRXC3, that involved in regulation of mannitol-induced inhibition on seed germination and seedling growth in transgenic Arabidopsis. MeGRXC3 overexpression up-regulates several stress-related transcription factor genes, such as PDF1.2, ERF6, ORA59, DREB2A, WRKY40, and WRKY53 in Arabidopsis. Protein interaction assays show that MeGRXC3 interacts with Arabidopsis TGA2 and TGA5 in the nucleus. Eliminated nuclear localization of MeGRXC3 failed to result mannitol-induced inhibition of seed germination and seedling growth in transgenic Arabidopsis. Mutation analysis of MeGRXC3 indicates the importance of conserved motifs for its transactivation activity in yeast. Additionally, these motifs are also indispensable for its functionality in regulating mannitol-induced inhibition of seed germination and enhancement of the stress-related transcription factors in transgenic Arabidopsis. CONCLUSIONS MeGRXC3 overexpression confers mannitol sensitivity in transgenic Arabidopsis possibly through interaction with TGA2/5 in the nucleus, and nuclear activity of MeGRXC3 is required for its function.
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Affiliation(s)
- Meng-Bin Ruan
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101 China
- Key Laboratory of Biology and Genetic Resources of Torpical Crops, Ministry of Agriculture, Haikou, 571101 China
| | - Xiao-Ling Yu
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101 China
- Key Laboratory of Biology and Genetic Resources of Torpical Crops, Ministry of Agriculture, Haikou, 571101 China
| | - Xin Guo
- Key Laboratory of Biology and Genetic Resources of Torpical Crops, Ministry of Agriculture, Haikou, 571101 China
- Huazhong Agricultural University, Wuhan, 430070 China
| | - Ping-Juan Zhao
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101 China
- Key Laboratory of Biology and Genetic Resources of Torpical Crops, Ministry of Agriculture, Haikou, 571101 China
| | - Ming Peng
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101 China
- Key Laboratory of Biology and Genetic Resources of Torpical Crops, Ministry of Agriculture, Haikou, 571101 China
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Kim GN, Hah YS, Seong H, Yoo WS, Choi MY, Cho HY, Yun SP, Kim SJ. The Role of Nuclear Factor of Activated T Cells 5 in Hyperosmotic Stress-Exposed Human Lens Epithelial Cells. Int J Mol Sci 2021; 22:ijms22126296. [PMID: 34208226 PMCID: PMC8230750 DOI: 10.3390/ijms22126296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 11/16/2022] Open
Abstract
We investigated the role of nuclear factor of activated T cells 5 (NFAT5) under hyperosmotic conditions in human lens epithelial cells (HLECs). Hyperosmotic stress decreased the viability of human lens epithelial B-3 cells and significantly increased NFAT5 expression. Hyperosmotic stress-induced cell death occurred to a greater extent in NFAT5-knockout (KO) cells than in NFAT5 wild-type (NFAT5 WT) cells. Bcl-2 and Bcl-xl expression was down-regulated in NFAT5 WT cells and NFAT5 KO cells under hyperosmotic stress. Pre-treatment with a necroptosis inhibitor (necrostatin-1) significantly blocked hyperosmotic stress-induced death of NFAT5 KO cells, but not of NFAT5 WT cells. The phosphorylation levels of receptor-interacting protein kinase 1 (RIP1) and RIP3, which indicate the occurrence of necroptosis, were up-regulated in NFAT5 KO cells, suggesting that death of these cells is predominantly related to the necroptosis pathway. This finding is the first to report that necroptosis occurs when lens epithelial cells are exposed to hyperosmolar conditions, and that NFAT5 is involved in this process.
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Affiliation(s)
- Gyu-Nam Kim
- Department of Ophthalmology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Gyeongsang National University Hospital, Jinju 52727, Korea; (G.-N.K.); (H.S.); (W.-S.Y.); (M.-Y.C.)
| | - Young-Sool Hah
- Biomedical Research Institute, Gyeongsang National University Hospital, Jinju 52727, Korea; (Y.-S.H.); (H.-Y.C.)
| | - Hyemin Seong
- Department of Ophthalmology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Gyeongsang National University Hospital, Jinju 52727, Korea; (G.-N.K.); (H.S.); (W.-S.Y.); (M.-Y.C.)
- Department of Pharmacology and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Korea
| | - Woong-Sun Yoo
- Department of Ophthalmology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Gyeongsang National University Hospital, Jinju 52727, Korea; (G.-N.K.); (H.S.); (W.-S.Y.); (M.-Y.C.)
| | - Mee-Young Choi
- Department of Ophthalmology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Gyeongsang National University Hospital, Jinju 52727, Korea; (G.-N.K.); (H.S.); (W.-S.Y.); (M.-Y.C.)
| | - Hee-Young Cho
- Biomedical Research Institute, Gyeongsang National University Hospital, Jinju 52727, Korea; (Y.-S.H.); (H.-Y.C.)
| | - Seung Pil Yun
- Department of Pharmacology and Convergence Medical Science, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Jinju 52727, Korea
- Correspondence: (S.P.Y.); (S.-J.K.); Tel.: +82-55-772-8071 (S.P.Y.); +82-55-750-8468 (S.-J.K.)
| | - Seong-Jae Kim
- Department of Ophthalmology, Institute of Health Sciences, College of Medicine, Gyeongsang National University, Gyeongsang National University Hospital, Jinju 52727, Korea; (G.-N.K.); (H.S.); (W.-S.Y.); (M.-Y.C.)
- Correspondence: (S.P.Y.); (S.-J.K.); Tel.: +82-55-772-8071 (S.P.Y.); +82-55-750-8468 (S.-J.K.)
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Pagnout C, Razafitianamaharavo A, Sohm B, Caillet C, Beaussart A, Delatour E, Bihannic I, Offroy M, Duval JFL. Osmotic stress and vesiculation as key mechanisms controlling bacterial sensitivity and resistance to TiO 2 nanoparticles. Commun Biol 2021; 4:678. [PMID: 34083706 PMCID: PMC8175758 DOI: 10.1038/s42003-021-02213-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 05/11/2021] [Indexed: 02/04/2023] Open
Abstract
Toxicity mechanisms of metal oxide nanoparticles towards bacteria and underlying roles of membrane composition are still debated. Herein, the response of lipopolysaccharide-truncated Escherichia coli K12 mutants to TiO2 nanoparticles (TiO2NPs, exposure in dark) is addressed at the molecular, single cell, and population levels by transcriptomics, fluorescence assays, cell nanomechanics and electrohydrodynamics. We show that outer core-free lipopolysaccharides featuring intact inner core increase cell sensitivity to TiO2NPs. TiO2NPs operate as membrane strippers, which induce osmotic stress, inactivate cell osmoregulation and initiate lipid peroxidation, which ultimately leads to genesis of membrane vesicles. In itself, truncation of lipopolysaccharide inner core triggers membrane permeabilization/depolarization, lipid peroxidation and hypervesiculation. In turn, it favors the regulation of TiO2NP-mediated changes in cell Turgor stress and leads to efficient vesicle-facilitated release of damaged membrane components. Remarkably, vesicles further act as electrostatic baits for TiO2NPs, thereby mitigating TiO2NPs toxicity. Altogether, we highlight antagonistic lipopolysaccharide-dependent bacterial responses to nanoparticles and we show that the destabilized membrane can generate unexpected resistance phenotype.
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Affiliation(s)
| | | | | | | | | | - Eva Delatour
- Université de Lorraine, CNRS, LIEC, Metz, France
| | | | - Marc Offroy
- Université de Lorraine, CNRS, LIEC, Nancy, France
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Zhao T, Arbelet-Bonnin D, Tran D, Monetti E, Lehner A, Meimoun P, Kadono T, Dauphin A, Errakhi R, Reboutier D, Cangémi S, Kawano T, Mancuso S, El-Maarouf-Bouteau H, Laurenti P, Bouteau F. Biphasic activation of survival and death pathways in Arabidopsis thaliana cultured cells by sorbitol-induced hyperosmotic stress. Plant Sci 2021; 305:110844. [PMID: 33691971 DOI: 10.1016/j.plantsci.2021.110844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
Hyperosmotic stresses represent some of the most serious abiotic factors that adversely affect plants growth, development and fitness. Despite their central role, the early cellular events that lead to plant adaptive responses remain largely unknown. In this study, using Arabidopsis thaliana cultured cells we analyzed early cellular responses to sorbitol-induced hyperosmotic stress. We observed biphasic and dual responses of A. thaliana cultured cells to sorbitol-induced hyperosmotic stress. A first set of events, namely singlet oxygen (1O2) production and cell hyperpolarization due to a decrease in anion channel activity could participate to signaling and osmotic adjustment allowing cell adaptation and survival. A second set of events, namely superoxide anion (O2-) production by RBOHD-NADPH-oxidases and SLAC1 anion channel activation could participate in programmed cell death (PCD) of a part of the cell population. This set of events raises the question of how a survival pathway and a death pathway could be induced by the same hyperosmotic condition and what could be the meaning of the induction of two different behaviors in response to hyperosmotic stress.
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Affiliation(s)
- Tingting Zhao
- Université de Paris, Laboratoire des Energies de Demain, Paris, France
| | | | - Daniel Tran
- former EA3514, Université Paris Diderot, Paris, France
| | - Emanuela Monetti
- former EA3514, Université Paris Diderot, Paris, France; LINV-DiSPAA, Department of Agri-Food and Environmental Science, University of Florence, Viale delle Idee 30, 50019, Sesto Fiorentino (FI), Italy
| | - Arnaud Lehner
- former EA3514, Université Paris Diderot, Paris, France
| | - Patrice Meimoun
- Université de Paris, Laboratoire des Energies de Demain, Paris, France; former EA3514, Université Paris Diderot, Paris, France; Université de Paris, Paris Interdisciplinary Energy Research Institute (PIERI), Paris, France
| | - Takashi Kadono
- former EA3514, Université Paris Diderot, Paris, France; Graduate School of Environmental Engineering, University of Kitakyushu, 1-1, Hibikino, Wakamatsu-ku, Kitakyushu 808-0135, Japan
| | | | - Rafik Errakhi
- former EA3514, Université Paris Diderot, Paris, France
| | | | - Sylvie Cangémi
- Université de Paris, Laboratoire des Energies de Demain, Paris, France
| | - Tomonori Kawano
- LINV-DiSPAA, Department of Agri-Food and Environmental Science, University of Florence, Viale delle Idee 30, 50019, Sesto Fiorentino (FI), Italy; Graduate School of Environmental Engineering, University of Kitakyushu, 1-1, Hibikino, Wakamatsu-ku, Kitakyushu 808-0135, Japan; University of Florence LINV Kitakyushu Research Center (LINV@Kitakyushu), Kitakyushu, Japan; Université de Paris, Paris Interdisciplinary Energy Research Institute (PIERI), Paris, France
| | - Stefano Mancuso
- LINV-DiSPAA, Department of Agri-Food and Environmental Science, University of Florence, Viale delle Idee 30, 50019, Sesto Fiorentino (FI), Italy; University of Florence LINV Kitakyushu Research Center (LINV@Kitakyushu), Kitakyushu, Japan; Université de Paris, Paris Interdisciplinary Energy Research Institute (PIERI), Paris, France
| | | | - Patrick Laurenti
- Université de Paris, Laboratoire des Energies de Demain, Paris, France
| | - François Bouteau
- Université de Paris, Laboratoire des Energies de Demain, Paris, France; former EA3514, Université Paris Diderot, Paris, France; LINV-DiSPAA, Department of Agri-Food and Environmental Science, University of Florence, Viale delle Idee 30, 50019, Sesto Fiorentino (FI), Italy; University of Florence LINV Kitakyushu Research Center (LINV@Kitakyushu), Kitakyushu, Japan.
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Lam B, Nwadozi E, Haas TL, Birot O, Roudier E. High Glucose Treatment Limits Drosha Protein Expression and Alters AngiomiR Maturation in Microvascular Primary Endothelial Cells via an Mdm2-dependent Mechanism. Cells 2021; 10:742. [PMID: 33801773 PMCID: PMC8065922 DOI: 10.3390/cells10040742] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/20/2021] [Accepted: 03/23/2021] [Indexed: 12/21/2022] Open
Abstract
Diabetes promotes an angiostatic phenotype in the microvascular endothelium of skeletal muscle and skin. Angiogenesis-related microRNAs (angiomiRs) regulate angiogenesis through the translational repression of pro- and anti-angiogenic genes. The maturation of micro-RNA (miRs), including angiomiRs, requires the action of DROSHA and DICER proteins. While hyperglycemia modifies the expression of angiomiRs, it is unknown whether high glucose conditions alter the maturation process of angiomiRs in dermal and skeletal muscle microvascular endothelial cells (MECs). Compared to 5 mM of glucose, high glucose condition (30 mM, 6-24 h) decreased DROSHA protein expression, without changing DROSHA mRNA, DICER mRNA, or DICER protein in primary dermal MECs. Despite DROSHA decreasing, high glucose enhanced the maturation and expression of one angiomiR, miR-15a, and downregulated an miR-15a target: Vascular Endothelial Growth Factor-A (VEGF-A). The high glucose condition increased Murine Double Minute-2 (MDM2) expression and MDM2-binding to DROSHA. Inhibition of MDM2 prevented the effects evoked by high glucose on DROSHA protein and miR-15a maturation in dermal MECs. In db/db mice, blood glucose was negatively correlated with the expression of skeletal muscle DROSHA protein, and high glucose decreased DROSHA protein in skeletal muscle MECs. Altogether, our results suggest that high glucose reduces DROSHA protein and enhances the maturation of the angiostatic miR-15a through a mechanism that requires MDM2 activity.
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Naß J, Kampf CJ, Efferth T. Increased Stress Resistance and Lifespan in Chaenorhabditis elegans Wildtype and Knockout Mutants-Implications for Depression Treatment by Medicinal Herbs. Molecules 2021; 26:molecules26071827. [PMID: 33805024 PMCID: PMC8036369 DOI: 10.3390/molecules26071827] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 03/13/2021] [Accepted: 03/22/2021] [Indexed: 12/23/2022] Open
Abstract
Depression and anxiety disorders are widespread diseases, and they belong to the leading causes of disability and greatest burdens on healthcare systems worldwide. It is expected that the numbers will dramatically rise during the COVID-19 pandemic. Established medications are not sufficient to adequately treat depression and are not available for everyone. Plants from traditional medicine may be promising alternatives to treat depressive symptoms. The model organism Chaenorhabditis elegans was used to assess the stress reducing effects of methanol/dichlormethane extracts from plants used in traditional medicine. After initial screening for antioxidant activity, nine extracts were selected for in vivo testing in oxidative stress, heat stress, and osmotic stress assays. Additionally, anti-aging properties were evaluated in lifespan assay. The extracts from Acanthopanax senticosus, Campsis grandiflora, Centella asiatica, Corydalis yanhusuo, Dan Zhi, Houttuynia cordata, Psoralea corylifolia, Valeriana officinalis, and Withaniasomnifera showed antioxidant activity of more than 15 Trolox equivalents per mg extract. The extracts significantly lowered ROS in mutants, increased resistance to heat stress and osmotic stress, and the extended lifespan of the nematodes. The plant extracts tested showed promising results in increasing stress resistance in the nematode model. Further analyses are needed, in order to unravel underlying mechanisms and transfer results to humans.
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Affiliation(s)
- Janine Naß
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany;
| | - Christopher J. Kampf
- Department for Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany;
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany;
- Correspondence: ; Tel.: +49-6131-3925751
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Li C, Chen L, Wang Y, Wang T, Di D, Zhang H, Zhao H, Shen X, Guo J. Protein Nanoparticle-Related Osmotic Pressure Modifies Nonselective Permeability of the Blood-Brain Barrier by Increasing Membrane Fluidity. Int J Nanomedicine 2021; 16:1663-1680. [PMID: 33688184 PMCID: PMC7935347 DOI: 10.2147/ijn.s291286] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 01/19/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Intracellular tension plays a crucial role in the destruction of the blood-brain barrier (BBB) in response to lesion stimuli. Tight junction structure could be primarily affected by tension activity. In this study, we aimed to determine the effects of extracellular BBB damage on intracellular tension activity, and elucidate the mechanism underlying the effects of intracellular protein nanoparticle-related osmotic pressure on BBB permeability. METHODS The intracellular tension for tight junction proteins occludin and ZO1 was evaluated using the fluorescence resonance energy transfer (FRET)-based tension probes and cpstFRET analysis. The changes in mobility ratios of occludin were evaluated via the fluorescence recovery after photobleaching (FRAP) test. The cytoplasmic osmotic pressure (OP) was measured using Osmometer. The count rate of cytoplasmic nanoparticles was detected by Nanosight NS300. The activation of cofilin and stathmin was examined by Western blot analysis. The BBB permeability in vivo was determined via the changes of Evans Blue (EB) injected into SD rats. The tight junction formation was assessed by the measurement of transendothelial electrical resistance (TEER). Intracellular calcium or chloride ions were measured using Fluo-4 AM or MQAE dyes. RESULTS BBB lesions were accompanied by changes in occludin/ZO1 tension. Increases in intracellular osmotic pressure were involved in alteration of BBB permeability, possibly through the depolymerization of microfilaments or microtubules and mass production of protein nanoparticles according to the Donnan effect. Recovery of protein nanoparticle-related osmotic pressure could effectively reverse the effects of changes in occludin/ZO1 tension under BBB lesions. Outward tension of intracellular osmotic potential also caused upregulation of membrane fluidity, which promoted nonselective drug influx. CONCLUSION Our results suggest a crucial mechanical mechanism underlying BBB lesions, and protein nanoparticle-related osmotic pressure could be a novel therapeutic target for BBB lesion-related brain diseases.
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Affiliation(s)
- Chen Li
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
- Key Laboratory of Drug Target and Drug for Degenerative Disease, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
| | - LinLin Chen
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
- Key Laboratory of Drug Target and Drug for Degenerative Disease, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
| | - YuanYuan Wang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
- Key Laboratory of Drug Target and Drug for Degenerative Disease, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
| | - TingTing Wang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
- Key Laboratory of Drug Target and Drug for Degenerative Disease, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
| | - Dong Di
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
- Key Laboratory of Drug Target and Drug for Degenerative Disease, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
| | - Hao Zhang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
- Science and Technology Experimental Center, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
| | - HuanHuan Zhao
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
- Key Laboratory of Drug Target and Drug for Degenerative Disease, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
| | - Xu Shen
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
- Key Laboratory of Drug Target and Drug for Degenerative Disease, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
| | - Jun Guo
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
- Key Laboratory of Drug Target and Drug for Degenerative Disease, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
- Science and Technology Experimental Center, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People’s Republic of China
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Okamoto A, Imamura M, Tani K, Matsumoto T. The effect of using light emitting diodes and fluorescent lamps as different light sources in growth inhibition tests of green alga, diatom, and cyanobacteria. PLoS One 2021; 16:e0247426. [PMID: 33606832 PMCID: PMC7895407 DOI: 10.1371/journal.pone.0247426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 02/07/2021] [Indexed: 11/18/2022] Open
Abstract
Aquatic organisms have been used to investigate the safety of chemicals worldwide. One such assessment is an algal growth inhibition test. Algal growth inhibition tests are commonly performed using a growth chamber with fluorescent lamps as the lighting source, as test guidelines require continuous uniform fluorescent illumination. However, fluorescent lamps contain mercury, which has been identified as hazardous to humans and other organisms. The Minamata Convention (adopted in 2013) requires reduction or prohibition of products containing mercury. On the other hand, light-emitting diodes do not contain mercury and provide a photosynthetically effective wavelength range of 400–700 nm which is an adequate light intensity for algal growth. Light-emitting diodes are thus preferable to fluorescent lamps as a potential light source in algal growth inhibition tests. In this study, we investigated if light-emitting diodes could be substituted for fluorescent lamps in growth inhibition studies with green alga (Pseudokirchneriella subcapitata), diatom (Navicula pelliculosa), and cyanobacteria (Anabaena flos-aquae). Algal growth inhibition tests were performed using five different chemicals known to have different modes of action and are assigned as reference substances in the test guidelines. The results of each algal test showed similar values between light-emitting diodes and fluorescent lamps in terms of conditions for the growth inhibition rate and percent inhibition in yield of each chemical. It was therefore concluded that using light-emitting diodes instead of fluorescent lamps as a lighting source had no effect on the algal growth inhibition test results.
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Affiliation(s)
- Akira Okamoto
- Department of Environmental Science & Toxicology, Nippon Soda Co., Ltd., Odawara, Kanagawa, Japan
- * E-mail:
| | - Miyuki Imamura
- Department of Environmental Science & Toxicology, Nippon Soda Co., Ltd., Odawara, Kanagawa, Japan
| | - Kazune Tani
- Department of Environmental Science & Toxicology, Nippon Soda Co., Ltd., Odawara, Kanagawa, Japan
| | - Takeru Matsumoto
- Department of Environmental Science & Toxicology, Nippon Soda Co., Ltd., Odawara, Kanagawa, Japan
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Yang J, Zhang L, Jiang L, Zhan YG, Fan GZ. Quercetin alleviates seed germination and growth inhibition in Apocynum venetum and Apocynum pictum under mannitol-induced osmotic stress. Plant Physiol Biochem 2021; 159:268-276. [PMID: 33401201 DOI: 10.1016/j.plaphy.2020.12.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 12/22/2020] [Indexed: 06/12/2023]
Abstract
Quercetin is one of the main flavonoids in the human diet and mainly found in different plant tissues, including seeds, flowers, leaves, stems, and roots. However, its biological function in plant tissues, especially in seeds, is unknown. In this study, the seed germination and subsequent seedling growth of Apocynum pictum and A. venetum under osmotic stress (400 mmol L-1 mannitol) supplemented with 5 μmol L-1 quercetin were evaluated after 7, 14, and 21 days of germination. Results showed that quercetin improved the germination percentage and seed vigor, as indicated by the higher germination energy, shoot length, root length, dry weight, fresh weight, and chlorophyll content in A. pictum and A. venetum seedlings under the mannitol compared with those under the mannitol alone. Quercetin decreased H2O2 and O2- production and cell membrane damage, and mostly increased the gene expression of superoxide dismutase, peroxidase, catalase, chalcone synthase and flavonol synthase in A. pictum and A. venetum seedlings under the mannitol compared with those under the mannitol alone. In addition, the germination energy of A. pictum was 21.57% higher than that of A. venetum, and the gene expression of key enzymes in quercetin biosynthesis in A. pictum was mostly higher than that in A. venetum after 1 and 7 days of germination. These results indicated that quercetin was an effective anti-osmotic agent that alleviated the adverse effect of mannitol-induced osmotic stress on seed germination and seed vigor, and A. pictum seeds were more osmotic resistant than A. venetum seeds.
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Affiliation(s)
- Jiale Yang
- College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150000, China
| | - Lixiang Zhang
- College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150000, China
| | - Li Jiang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China
| | - Ya Guang Zhan
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministey of Education, Northeast Forestry University, Harbin, 150040, China
| | - Gui Zhi Fan
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministey of Education, Northeast Forestry University, Harbin, 150040, China.
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11
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Wu DL, Wang TS, Zhang W, Wang JS, Peng DY, Kong LY. NMR-based metabolomics approach to study the effects of Wu-Zi-Yan-Zong-Wan on triptolide-induced oligospermia in rats. J Ethnopharmacol 2021; 265:113192. [PMID: 32889033 DOI: 10.1016/j.jep.2020.113192] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/24/2020] [Accepted: 07/14/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Wu-Zi-Yan-Zong-Wan (WZYZW) is a commonly used Chinese medicinal recipe for oligozoospermia. Oligozoospermia is a common disease that harms human fertility, there is no effective therapeutic medicine at present. However, the underlying pharmacological mechanism remains unclear. METHODS Oligozoospermia rats model induced by Tripterygium glycosides (TG) was established to inspect the efficiency of WZYZW in the treatment of oligozoospermia by traditional pharmacodynamics combined with NMR-based metabolomics. Multivariate statistics were used to extracted the underlying biomarkers and metabolic pathways of WZYZW in the treatment of oligozoospermia. RESULTS The results showed that TG disturbed many metabolites and metabolic pathways such as oxidative stress (choline, O-phosphocholine, betaine and ascorbate), energy metabolism in mitochondria (glucose, lactate, succinate, fumarate, 3-hydroxybutyrate and alanine), mitochondrial apoptosis markers (Bax and Bcl-2) and amino acids metabolisms (arginine, branched-chain amino acids, taurine and myo-inositol). CONCLUSIONS WZYZW could significantly reverse the disturbed metabolites to their normal status by their abilities of anti-oxidation, anti-apoptosis, balancing the osmotic pressure regulatory molecules and regulating the amino acids metabolism. This study provides pharmacological basis and guidance for the clinical usage of WZYZW.
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Affiliation(s)
- De-Ling Wu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China; School of Pharmacy, Anhui University of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medical Formula, Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, China.
| | - Tong-Sheng Wang
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medical Formula, Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, China.
| | - Wei Zhang
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medical Formula, Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, China.
| | - Jun-Song Wang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China; Center for Molecular Metabolism, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, China.
| | - Dai-Yin Peng
- School of Pharmacy, Anhui University of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medical Formula, Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, China.
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China.
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12
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Jiao L, Du X, Jia F, Li Y, Zhu D, Tang T, Jiao Q, Jiang H. Early low-dose ghrelin intervention via miniosmotic pumps could protect against the progressive dopaminergic neuron loss in Parkinson's disease mice. Neurobiol Aging 2021; 101:70-78. [PMID: 33582568 DOI: 10.1016/j.neurobiolaging.2021.01.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 01/08/2023]
Abstract
Ghrelin has been identified as a multifunctional peptide that has a potential application for treating Parkinson's disease (PD). The objective of this study was to assess the effects of subcutaneous administration of low-dose ghrelin via miniosmotic pumps on PD progression. The decreased levels of total and active ghrelin in plasma were rescued by ghrelin administration in PD mice. Interestingly, ghrelin did not affect weight gain in wild-type mice but improved weight loss in PD mice. We observed the attenuation of dopaminergic neuron loss in substantia nigra and a low level of dopamine content in the striatum in PD mice with ghrelin treatment. Ghrelin administration could improve the microenvironment of dopaminergic neurons by inhibiting microglial proliferation and proinflammatory cytokine expression and could enhance cell survival by upregulating Bcl-2/Bax ratio and superoxide dismutase1 protein level in the substantia nigra of PD mice. Subcutaneous administration of low-dose ghrelin could prevent the onset of the progression of PD and also provide a possible method for ghrelin application to cure PD.
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Affiliation(s)
- Lingling Jiao
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China
| | - Xixun Du
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China
| | - Fengju Jia
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China
| | - Yong Li
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China
| | - Dexiao Zhu
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China
| | - Tinging Tang
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China
| | - Qian Jiao
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China.
| | - Hong Jiang
- Department of Physiology, Shandong Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Medical College of Qingdao University, Qingdao, China.
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13
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Oetken M, Adler M, Alt K, Bachmann J, Dombrowski A, Duhme F, Gabriel AL, Grünewald J, Jourdan J, Lück M, Mensch C, Rösch D, Ruthemann A, Terres S, Völker ML, Wilhelm F, Oehlmann J. The Occurrence of Intersex in Different Populations of the Marine Amphipod Echinogammarus marinus in North-West Brittany - A Longterm-Study. Front Endocrinol (Lausanne) 2021; 12:816418. [PMID: 35002985 PMCID: PMC8740121 DOI: 10.3389/fendo.2021.816418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 11/30/2021] [Indexed: 11/13/2022] Open
Abstract
In the past two decades, an increasing body of studies has been published on the intersex phenomenon in separate-sexed crustaceans from marine and freshwater ecosystems. Various causes are being considered that could have an influence on the occurrence of intersex. Besides genetic factors, environmental conditions such as photoperiodicity, temperature, salinity and parasitism, but also environmental pollution with endocrine disrupting chemicals (EDCs) are discussed. As part of a long-term monitoring (2012 - 2020) in north-west Brittany, we recorded the occurrence of intersex in the marine amphipod Echinogammarus marinus. We quantified the intersex incidence at marine and estuarine sites and analyzed the incidence in relation to the endocrine potential of the sediments. Intersex occurred with mean frequencies between 0.87% and 12%. It was striking that the incidence of intersex increased with increasing distance from the sea. Since the highest incidence was observed at the range boundary of this stenohaline species, we assume that intersex is triggered by endocrine potential and increasing stress due to increasing freshwater content - and thus an interplay of different environmental factors.
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Affiliation(s)
- Matthias Oetken
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
- *Correspondence: Matthias Oetken,
| | - Marissa Adler
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Katharina Alt
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Jean Bachmann
- Pharmaceuticals, German Environment Agency (UBA), Dessau, Germany
| | - Andrea Dombrowski
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Franziska Duhme
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Anna-Louise Gabriel
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Judith Grünewald
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Jonas Jourdan
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Maren Lück
- Department System Ecotoxicology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Carola Mensch
- Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Dominik Rösch
- German Federal Institute of Hydrology (BfG), Koblenz, Germany
| | - Anna Ruthemann
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Susanne Terres
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Maja Lorina Völker
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Ferdinand Wilhelm
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
| | - Jörg Oehlmann
- Department Aquatic Ecotoxicology, Goethe University, Frankfurt am Main, Germany
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Rahman SU, Khalid M, Kayani SI, Tang K. The ameliorative effects of exogenous inoculation of Piriformospora indica on molecular, biochemical and physiological parameters of Artemisia annua L. under arsenic stress condition. Ecotoxicol Environ Saf 2020; 206:111202. [PMID: 32889311 PMCID: PMC7646201 DOI: 10.1016/j.ecoenv.2020.111202] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 08/17/2020] [Accepted: 08/19/2020] [Indexed: 05/11/2023]
Abstract
Aim of the current study was to investigate the effect of exogenously inoculated root endophytic fungus, Piriformospora indica, on molecular, biochemical, morphological and physiological parameters of Artemisia annua L. treated with different concentrations (0, 50, 100 and 150 μmol/L) of arsenic (As) stress. As was significantly accumulated in the roots than shoots of P. indica-inoculated plants. As accumulation and immobilization in the roots is directly associated with the successful fungal colonization that restricts most of As as compared to the aerial parts. A total of 4.1, 11.2 and 25.6 mg/kg dry weight of As was accumulated in the roots of inoculated plants supplemented with 50, 100 and 150 μmol/L of As, respectively as shown by atomic absorption spectroscopy. P. indica showed significant tolerance in vitro to As toxicity even at high concentration. Furthermore, flavonoids, artemisinin and overall biomass were significantly increased in inoculated-stressed plants. Superoxide dismutase and peroxidase activities were increased 1.6 and 1.2 fold, respectively under 150 μmol/L stress in P. indica-colonized plants. Similar trend was followed by ascorbate peroxidase, catalase and glutathione reductase. Like that, phenolic acid and phenolic compounds showed a significant increase in colonized plants as compared to their respective control/un-colonize stressed plants. The real-time PCR revealed that transcriptional levels of artemisinin biosynthesis genes, isoprenoids, terpenes, flavonoids biosynthetic pathway genes and signal molecules were prominently enhanced in inoculated stressed plants than un-inoculated stressed plants.
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Affiliation(s)
- Saeed-Ur- Rahman
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Muhammad Khalid
- Key Laboratory of Urban Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Sadaf-Ilyas Kayani
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Kexuan Tang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
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15
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Upadhyay RK, Edelman M, Mattoo AK. Identification, Phylogeny, and Comparative Expression of the Lipoxygenase Gene Family of the Aquatic Duckweed, Spirodela polyrhiza, during Growth and in Response to Methyl Jasmonate and Salt. Int J Mol Sci 2020; 21:E9527. [PMID: 33333747 PMCID: PMC7765210 DOI: 10.3390/ijms21249527] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/09/2020] [Accepted: 12/11/2020] [Indexed: 11/16/2022] Open
Abstract
Lipoxygenases (LOXs) (EC 1.13.11.12) catalyze the oxygenation of fatty acids and produce oxylipins, including the plant hormone jasmonic acid (JA) and its methyl ester, methyl jasmonate (MeJA). Little information is available about the LOX gene family in aquatic plants. We identified a novel LOX gene family comprising nine LOX genes in the aquatic plant Spirodela polyrhiza (greater duckweed). The reduced anatomy of S. polyrhiza did not lead to a reduction in LOX family genes. The 13-LOX subfamily, with seven genes, predominates, while the 9-LOX subfamily is reduced to two genes, an opposite trend from known LOX families of other plant species. As the 13-LOX subfamily is associated with the synthesis of JA/MeJA, its predominance in the Spirodela genome raises the possibility of a higher requirement for the hormone in the aquatic plant. JA-/MeJA-based feedback regulation during culture aging as well as the induction of LOX gene family members within 6 h of salt exposure are demonstrated.
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Affiliation(s)
- Rakesh K. Upadhyay
- Sustainable Agricultural Systems Laboratory, United States Department of Agriculture, Agricultural Research Service, Henry A. Wallace Beltsville Agricultural Research Center, Beltsville, MD 20705-2350, USA
| | - Marvin Edelman
- Department of Plant & Environmental Sciences, Weizmann Institute of Science, Rehovot 76100, Israel;
| | - Autar K. Mattoo
- Sustainable Agricultural Systems Laboratory, United States Department of Agriculture, Agricultural Research Service, Henry A. Wallace Beltsville Agricultural Research Center, Beltsville, MD 20705-2350, USA
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16
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Zhang S, Wu QR, Liu LL, Zhang HM, Gao JW, Pei ZM. Osmotic stress alters circadian cytosolic Ca 2+ oscillations and OSCA1 is required in circadian gated stress adaptation. Plant Signal Behav 2020; 15:1836883. [PMID: 33100175 PMCID: PMC7671097 DOI: 10.1080/15592324.2020.1836883] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 05/09/2023]
Abstract
The circadian clock is a universal timing system that involved in plant physical responses to abiotic stresses. Moreover, OSCA1 is an osmosensor responsible for [Ca2+]i increases induced by osmotic stress in plants. However, there is little information on osmosensor involved osmotic stress-triggered circadian clock responses. Using an aequorin-based Ca2+ imaging assay, we found the gradient (0 mM, 200 mM, 500 mM) osmotic stress (induced by sorbitol) both altered the primary circadian parameter of WT and osca1 mutant. This means the plant switch to a fast day/night model to avoid energy consumption. In contrast, the period of WT and osca1 mutant became short since the sorbitol concentration increased from 0 mM to 500 mM. As the sorbitol concentration increased, the phase of the WT becomes more extensive compared with osca1 mutant, which means WT is more capable of coping with the environmental change. Moreover, the amplitude of WT also becomes broader than osca1 mutant, especially in high (500 mM) sorbitol concentration, indicate the WT shows more responses in high osmotic stress. In a word, the WT has much more flexibility to cope with the osmotic stress than osca1 mutant. It implies the OSCA1 might be involved in the circadian gated plant adaptation to the environmental osmotic stress, which opens an avenue to study Ca2+ processes with other circadian signaling pathways.
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Affiliation(s)
- Shu Zhang
- College of Life Sciences, Zhejiang University, Hangzhou, China
- Institute of Vegetables and Flowers, Shandong Academy of Agricultural Sciences and Shandong Key Laboratory of Greenhouse Vegetable Biology and Shandong Branch of National Vegetable Improvement Center, Jinan, China
- Center on Plant Environmental Sensing, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Qian-Rong Wu
- Center on Plant Environmental Sensing, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Lu-Lu Liu
- College of Life Sciences, Zhejiang University, Hangzhou, China
- Center on Plant Environmental Sensing, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Hui-Min Zhang
- College of Life Sciences, Shandong Normal University, Jinan, China
| | - Jian-Wei Gao
- Institute of Vegetables and Flowers, Shandong Academy of Agricultural Sciences and Shandong Key Laboratory of Greenhouse Vegetable Biology and Shandong Branch of National Vegetable Improvement Center, Jinan, China
| | - Zhen-Ming Pei
- College of Life Sciences, Zhejiang University, Hangzhou, China
- Center on Plant Environmental Sensing, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
- Department of Biology, Duke University, Durham, NC, USA
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17
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Feki F, Taktak R, Kandil K, Derrouiche A, Moulart M, Haddar N, Zaïri F, Zaïri F. How Osmoviscoelastic Coupling Affects Recovery of Cyclically Compressed Intervertebral Disc. Spine (Phila Pa 1976) 2020; 45:E1376-E1385. [PMID: 33031252 DOI: 10.1097/brs.0000000000003593] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Osmoviscoelastic behavior of cyclically loaded cervical intervertebral disc. OBJECTIVE The aim of this study was to evaluate in vitro the effects of physiologic compressive cyclic loading on the viscoelastic properties of cervical intervertebral disc and, examine how the osmoviscoelastic coupling affects time-dependent recovery of these properties following a long period of unloading. SUMMARY OF BACKGROUND DATA The human neck supports repetitive loadings during daily activities and recovery of disc mechanics is essential for normal mechanical function. However, the response of cervical intervertebral disc to cyclic loading is still not very well defined. Moreover, how loading history conditions could affect the time-dependent recovery is still unclear. METHODS Ten thousand cycles of compressive loading, with different magnitudes and saline concentrations of the surrounding fluid bath, are applied to 8 motion segments (composed by 2 adjacent vertebrae and the intervening disc) extracted from the cervical spines of mature sheep. Subsequently, specimens are hydrated during 18 hours of unloading. The viscoelastic disc responses, after cyclic loading and recovery phase, are characterized by relaxation tests. RESULTS Viscoelastic behaviors are significantly altered following large number of cyclic loads. Moreover, after 18-hour recovery period in saline solution at reference concentration (0.15 mol/L), relaxation behaviors were fully restored. Nonetheless, full recovery is not obtained whether the concentration of the surrounding fluid, that is, hypo-, iso-, or hyper-osmotic conditions. CONCLUSION Cyclic loading effects and full recovery of viscoelastic behavior after hydration at iso-osmotic condition (0.15 mol/L) are governed by osmotic attraction of fluid content in the disc due to imbalance between the external load and the swelling pressure of the disc. After removal of the load, the disc recovers its viscoelastic properties following period of rest. Nevertheless, the viscoelastic recovery is a chemically activated process and its dependency on saline concentration is governed by fluid flow due to imbalance of ions between the disc tissues and the surrounding fluid. LEVEL OF EVIDENCE 3.
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Affiliation(s)
- Faten Feki
- ENIS, Materials Engineering and Environment Laboratory (LGME), Sfax, Tunisia
| | - Rym Taktak
- ENIS, Materials Engineering and Environment Laboratory (LGME), Sfax, Tunisia
| | - Karim Kandil
- Lille University, Civil Engineering and geo-Environmental Laboratory (ULR 4515 LGCgE), Lille, France
| | - Amil Derrouiche
- Lille University, Civil Engineering and geo-Environmental Laboratory (ULR 4515 LGCgE), Lille, France
| | | | - Nader Haddar
- ENIS, Materials Engineering and Environment Laboratory (LGME), Sfax, Tunisia
| | - Fahmi Zaïri
- Lille University, Civil Engineering and geo-Environmental Laboratory (ULR 4515 LGCgE), Lille, France
| | - Fahed Zaïri
- Ramsay Générale de Santé, Hôpital privé Le Bois, Lille, France
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Cadavid IC, da Fonseca GC, Margis R. HDAC inhibitor affects soybean miRNA482bd expression under salt and osmotic stress. J Plant Physiol 2020; 253:153261. [PMID: 32947244 DOI: 10.1016/j.jplph.2020.153261] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
MicroRNAs (miRNAs) are small non-coding molecules that modulate gene expression through targeting mRNA by specific-sequence cleavage, translation inhibition, or transcriptional regulation. miRNAs are key molecules in regulatory networks in abiotic stresses such as salt stress and water deficit in plants. Throughout the world, soybean is a critical crop, the production of which is affected by environmental stress conditions. In this study, RNA-Seq libraries from leaves of soybean under salt treatment were analyzed. 17 miRNAs and 31 putative target genes were identified with inverse differential expression patterns, indicating miRNA-target interaction. The differential expression of six miRNAs, including miR482bd-5p, and their potential targets, were confirmed by RT-qPCR. The miR482bd-5p expression was repressed, while its potential HEC1 and BAK1 targets were increased. Polyethylene glycol experiment was used to simulate drought stress, and miR482bd-5p, HEC1, and BAK1 presented a similar expression pattern, as found in salt stress. Histone modifications occur in response to abiotic stress, where histone deacetylases (HDACs) can lead to gene repression and silencing. The miR482bd-5p epigenetic regulation by histone deacetylation was evaluated by using the SAHA-HDAC inhibitor. The miR482bd-5p was up-regulated, and HEC1 was down-regulated under SAHA-salt treatment. It suggests an epigenetic regulation, where the miRNA gene is repressed by HDAC under salt stress, reducing its transcription, with an associated increase in the HEC1 target expression.
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Affiliation(s)
- Isabel Cristina Cadavid
- Programa de Pós-graduação em Biologia Celular e Molecular (PPGBCM), Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Rogerio Margis
- Programa de Pós-graduação em Biologia Celular e Molecular (PPGBCM), Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Departamento de Biofisica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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Hossain MS, Li J, Sikdar A, Hasanuzzaman M, Uzizerimana F, Muhammad I, Yuan Y, Zhang C, Wang C, Feng B. Exogenous Melatonin Modulates the Physiological and Biochemical Mechanisms of Drought Tolerance in Tartary Buckwheat ( Fagopyrum tataricum (L.) Gaertn). Molecules 2020; 25:E2828. [PMID: 32570970 PMCID: PMC7355475 DOI: 10.3390/molecules25122828] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 12/14/2022] Open
Abstract
Tartary buckwheat is one of the nutritious minor cereals and is grown in high-cold mountainous areas of arid and semi-arid zones where drought is a common phenomenon, potentially reducing the growth and yield. Melatonin, which is an amphiphilic low molecular weight compound, has been proven to exert significant effects in plants, under abiotic stresses, but its role in the Tartary buckwheat under drought stress remains unexplored. We evaluated the influence of melatonin supplementation on plant morphology and different physiological activities, to enhance tolerance to posed drought stress by scavenging reactive oxygen species (ROS) and alleviating lipid peroxidation. Drought stress decreased the plant growth and biomass production compared to the control. Drought also decreased Chl a, b, and the Fv/Fm ratio by 54%, 70%, and 8%, respectively, which was associated with the disorganized stomatal properties. Under drought stress, H2O2, O2•-, and malondialdehyde (MDA) contents increased by 2.30, 2.43, and 2.22-folds, respectively, which caused oxidative stress. In contrast, proline and soluble sugar content were increased by 84% and 39%, respectively. However, exogenous melatonin (100 µM) could improve plant growth by preventing ROS-induced oxidative damage by increasing photosynthesis, enzymatic antioxidants (superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase), secondary metabolites like phenylalanine ammonialyase, phenolics, and flavonoids, total antioxidant scavenging (free radical DPPH scavenging), and maintaining relative water content and osmoregulation substances under water stress. Therefore, our study suggested that exogenous melatonin could accelerate drought resistance by enhancing photosynthesis and antioxidant defense in Tartary buckwheat plants.
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Affiliation(s)
- Md. Shakhawat Hossain
- College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China; (M.S.H.); (J.L.); (F.U.); (I.M.); (Y.Y.); (C.Z.); (C.W.)
| | - Jing Li
- College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China; (M.S.H.); (J.L.); (F.U.); (I.M.); (Y.Y.); (C.Z.); (C.W.)
| | - Ashim Sikdar
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi, China;
- Department of Agroforestry and Environmental Science, Sylhet Agricultural University, Sylhet 3100, Bangladesh
| | - Mirza Hasanuzzaman
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh;
| | - Ferdinand Uzizerimana
- College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China; (M.S.H.); (J.L.); (F.U.); (I.M.); (Y.Y.); (C.Z.); (C.W.)
| | - Izhar Muhammad
- College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China; (M.S.H.); (J.L.); (F.U.); (I.M.); (Y.Y.); (C.Z.); (C.W.)
| | - Yuhao Yuan
- College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China; (M.S.H.); (J.L.); (F.U.); (I.M.); (Y.Y.); (C.Z.); (C.W.)
| | - Chengjin Zhang
- College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China; (M.S.H.); (J.L.); (F.U.); (I.M.); (Y.Y.); (C.Z.); (C.W.)
| | - Chenyang Wang
- College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China; (M.S.H.); (J.L.); (F.U.); (I.M.); (Y.Y.); (C.Z.); (C.W.)
| | - Baili Feng
- College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China; (M.S.H.); (J.L.); (F.U.); (I.M.); (Y.Y.); (C.Z.); (C.W.)
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20
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Sahoo MR, Devi TR, Dasgupta M, Nongdam P, Prakash N. Reactive oxygen species scavenging mechanisms associated with polyethylene glycol mediated osmotic stress tolerance in Chinese potato. Sci Rep 2020; 10:5404. [PMID: 32214180 PMCID: PMC7096404 DOI: 10.1038/s41598-020-62317-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 03/02/2020] [Indexed: 12/01/2022] Open
Abstract
Influence of polyethylene glycol (PEG) mediated osmotic stress on reactive oxygen species (ROS) scavenging machinery of Chinese potato (Solenostemon rotundifolius (Poir.) J. K. Morton) was investigated. Five genotypes of Chinese potato were raised in Murashige and Skoog (MS) basal medium containing 6-benzylaminopurine (BAP, 1 mg L-1) along with various concentrations of PEG-6000 mediated stress conditions (0, -0.2 and -0.5 MPa) and evaluated for osmotic stress tolerance in vitro. The medium containing PEG-6000 had a detrimental effect on plantlet growth and development while compared with the control. Accumulation of H2O2 was lower in Sreedhara and Subala and higher in Nidhi under PEG stress, which was evident by in situ detection in leaves. Lipid peroxidation product such as malondialdehyde (MDA) content was increased due to PEG stress which was more in susceptible genotype than that in tolerant ones. An enhanced ROS-scavenging antioxidant enzyme was observed under stress with respect to the control. The enzymes of ascorbate-glutathione cycle showed an important role in scavenging ROS. The imposition of PEG stress also increased the non-enzymatic antioxidants viz., the ascorbate and reduced glutathione content which was prominent in tolerant genotypes in comparison to susceptible. The present study indicated that, Sreedhara and Subala showed more tolerance to osmotic stress with better ROS scavenging machineries which would be the lines of interest for augmenting future breeding strategies in this climate resilient minor tuber crop.
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Affiliation(s)
- Manas Ranjan Sahoo
- ICAR Research Complex for North Eastern Hill Region, Imphal, 795004, Manipur, India.
| | - Tongbram Roshni Devi
- ICAR Research Complex for North Eastern Hill Region, Imphal, 795004, Manipur, India
| | - Madhumita Dasgupta
- ICAR Research Complex for North Eastern Hill Region, Imphal, 795004, Manipur, India
| | | | - Narendra Prakash
- ICAR Research Complex for North Eastern Hill Region, Imphal, 795004, Manipur, India
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21
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Kreszies T, Eggels S, Kreszies V, Osthoff A, Shellakkutti N, Baldauf JA, Zeisler-Diehl VV, Hochholdinger F, Ranathunge K, Schreiber L. Seminal roots of wild and cultivated barley differentially respond to osmotic stress in gene expression, suberization, and hydraulic conductivity. Plant Cell Environ 2020; 43:344-357. [PMID: 31762057 DOI: 10.1111/pce.13675] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 10/23/2019] [Accepted: 11/03/2019] [Indexed: 05/13/2023]
Abstract
Wild barley, Hordeum vulgare spp. spontaneum, has a wider genetic diversity than its cultivated progeny, Hordeum vulgare spp. vulgare. Osmotic stress leads to a series of different responses in wild barley seminal roots, ranging from no changes in suberization to enhanced endodermal suberization of certain zones and the formation of a suberized exodermis, which was not observed in the modern cultivars studied so far. Further, as a response to osmotic stress, the hydraulic conductivity of roots was not affected in wild barley, but it was 2.5-fold reduced in cultivated barley. In both subspecies, osmotic adjustment by increasing proline concentration and decreasing osmotic potential in roots was observed. RNA-sequencing indicated that the regulation of suberin biosynthesis and water transport via aquaporins were different between wild and cultivated barley. These results indicate that wild barley uses different strategies to cope with osmotic stress compared with cultivated barley. Thus, it seems that wild barley is better adapted to cope with osmotic stress by maintaining a significantly higher hydraulic conductivity of roots during water deficit.
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Affiliation(s)
- Tino Kreszies
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
| | - Stella Eggels
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
- Plant Breeding, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Munich, 85354, Germany
| | - Victoria Kreszies
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
| | - Alina Osthoff
- Crop Functional Genomics, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Bonn, 53113, Germany
| | - Nandhini Shellakkutti
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
| | - Jutta A Baldauf
- Crop Functional Genomics, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Bonn, 53113, Germany
| | - Viktoria V Zeisler-Diehl
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
| | - Frank Hochholdinger
- Crop Functional Genomics, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Bonn, 53113, Germany
| | - Kosala Ranathunge
- School of Biological Sciences, Faculty of Science, University of Western Australia, Perth, 6009, Australia
| | - Lukas Schreiber
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
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Zhang S, Shao L, Sun Z, Huang Y, Liu N. An atmospheric pollutant (inorganic nitrogen) alters the response of evergreen broad-leaved tree species to extreme drought. Ecotoxicol Environ Saf 2020; 187:109750. [PMID: 31655412 DOI: 10.1016/j.ecoenv.2019.109750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/30/2019] [Accepted: 10/01/2019] [Indexed: 06/10/2023]
Abstract
Drought and nitrogen (N) deposition are important components of global climate and environmental change. In this greenhouse study, we investigated the ecophysiological responses of the seedlings of three subtropical forest plant species (Schima superba, Castanopsis fissa, and Michelia macclurei) to short-term experimental drought stress, N addition, and their interaction. The results showed that drought stress reduced the activities of antioxidant enzymes [superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT)] and total antioxidant capacity (T-AOC), but increased the malondialdehyde (MDA), abscisic acid (ABA), and proline (PRO) contents in plants. The PRO content, T-AOC, and antioxidant enzyme activities were increased, and ABA and MDA contents were decreased by N addition alone. Furthermore, N addition under drought stress increased antioxidant enzymes activities, PRO content, and T-AOC. The treatments, however, did not significantly affect the chlorophyll fluorescence parameters of the species. T-AOC was positively correlated with antioxidant enzyme activities in each species, indicating that antioxidant enzymes were important for plant resistance to oxidative stress. MDA content increased with the increase of ABA content, indicating that ABA may help regulate stomatal movement and drought-induced oxidative injury in plants. T-AOC was positively correlated with PRO content, probably because PRO participated in osmotic regulation of cells and increased osmotic stress resistance. These results indicate that N addition can reduce drought stress of subtropical forest plants and will help researchers predict how evergreen broad-leaved forests will respond to global change in the future.
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Affiliation(s)
- Shike Zhang
- CAS Engineering Laboratory for Ecological Restoration of Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ling Shao
- School of Food Pharmaceutical Engineering, Zhao Qing University, Zhaoqing, 526061, China
| | - Zhongyu Sun
- Guangdong Open Laboratory of Geospatial Information Technology and Application, Guangzhou Institute of Geography, Guangzhou, 510070, China
| | - Yao Huang
- CAS Engineering Laboratory for Ecological Restoration of Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Nan Liu
- CAS Engineering Laboratory for Ecological Restoration of Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
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23
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Lin JH, Yu LH, Xiang CB. ARABIDOPSIS NITRATE REGULATED 1 acts as a negative modulator of seed germination by activating ABI3 expression. New Phytol 2020; 225:835-847. [PMID: 31491809 DOI: 10.1111/nph.16172] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 08/29/2019] [Indexed: 06/10/2023]
Abstract
Seed germination is a crucial transition point in plant life and is tightly regulated by environmental conditions through the coordination of two phytohormones, gibberellin and abscisic acid (ABA). To avoid unfavorable conditions, plants have evolved safeguard mechanisms for seed germination. The present contribution reports a novel function of the Arabidopsis MCM1/AGAMOUS/DEFICIENS/SRF(MADS)-box transcription factor ARABIDOPSIS NITRATE REGULATED 1 (ANR1) in seed germination. ANR1 knockout mutant is insensitive to ABA, salt and osmotic stress during the seed germination and early seedling development stages, whereas ANR1-overexpressing lines are hypersensitive. ANR1 is responsive to ABA and abiotic stresses and upregulates the expression of ABA Intolerant (ABI)3 to suppress seed germination. ANR1 and ABI3 have similar expression pattern during seed germination. Genetically, ABI3 acts downstream of ANR1. Chromatin immunoprecipitation and yeast-one-hybrid assays showed that ANR1 could bind to the ABI3 promoter to regulate its expression. In addition, ANR1 acts synergistically with AGL21 to suppress seed germination in response to ABA as evidenced by anr1 agl21 double mutant. Taken together, the results herein demonstrate that the ANR1 plays an important role in regulating seed germination and early postgermination growth. ANR1 and AGL21 together constitutes a safeguard mechanism for seed germination to avoid unfavorable conditions.
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Affiliation(s)
- Jia-Hui Lin
- School of Life Sciences and Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province, 230027, China
| | - Lin-Hui Yu
- School of Life Sciences and Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province, 230027, China
| | - Cheng-Bin Xiang
- School of Life Sciences and Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province, 230027, China
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24
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Zhang M, He S, Zhan Y, Qin B, Jin X, Wang M, Zhang Y, Hu G, Teng Z, Wu Y. Exogenous melatonin reduces the inhibitory effect of osmotic stress on photosynthesis in soybean. PLoS One 2019; 14:e0226542. [PMID: 31869357 PMCID: PMC6927616 DOI: 10.1371/journal.pone.0226542] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 11/28/2019] [Indexed: 12/04/2022] Open
Abstract
Understanding the relationship between exogenous melatonin and water deficit stress is crucial for achieving high yields and alleviating the effects of water deficit stress on soybean (Glycine max (L.) Merrill) plants in agriculture. This study investigated the effects of exogenous melatonin on soybean photosynthetic capacity under water deficit stress induced by polyethylene glycol (PEG) 6000. We conducted a potting experiment in 2018 using the soybean (Glycine max L. Merrill) cultivar Suinong 26. We identified the impacts of a concentration of PEG 6000 simulating drought (15%, w/v) and an appropriate melatonin concentration (100 μmol/L) on the growth of soybean seedlings and flowering stages in a preliminary test. We applied exogenous melatonin by foliar spraying and root application to determine the effects on leaf photosynthesis during water deficit stress. Our results indicated that 15% PEG 6000 had an obvious inhibitory effect on the growth of soybean seedlings and flowering stages, causing oxidative stress and damage due to reactive oxygen species (ROS) (H2O2 and O2·-) accumulation and potentially reducing air exchange parameters and photosystem II (PSII) efficiency. The application of exogenous melatonin significantly relieved the inhibitory effects of PEG 6000 stress on seedlings and flowering growth, and gas exchange parameters, potentially improved PSII efficiency, improved the leaf area index (LAI) and the accumulation of dry matter, slowed down oxidative stress and damage to leaves by increasing the activity of antioxidant enzymes (SOD, POD, and CAT), reduced the content of malondialdehyde (MDA), and ultimately improved soybean yield. Overall, the results of this study demonstrated that application of exogenous melatonin at the seedlings and flowering stages of soybean is effective in alleviating plant damage caused by water deficit stress and improving the drought resistance of soybean plants. In addition, the results showed that application of exogenous melatonin by root is superior to foliar spraying.
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Affiliation(s)
- Mingcong Zhang
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, P.R. China
| | - Songyu He
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, P.R. China
| | - Yingce Zhan
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, P.R. China
| | - Bin Qin
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, P.R. China
| | | | - Mengxue Wang
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, P.R. China
| | - Yuxian Zhang
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, P.R. China
| | - Guohua Hu
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, P.R. China
| | - Zhanlin Teng
- Huanan Agrotechnical Extension Center, Jiamusi, P.R. China
| | - Yaokun Wu
- Daqing Branch of Heilongjiang Academy of Sciences, Daqing, P.R. China
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Darko E, Végh B, Khalil R, Marček T, Szalai G, Pál M, Janda T. Metabolic responses of wheat seedlings to osmotic stress induced by various osmolytes under iso-osmotic conditions. PLoS One 2019; 14:e0226151. [PMID: 31856179 PMCID: PMC6922385 DOI: 10.1371/journal.pone.0226151] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 11/20/2019] [Indexed: 12/25/2022] Open
Abstract
Many environmental stresses cause osmotic stress which induces several metabolic changes in plants. These changes often vary depending on the genotype, type and intensity of stress or the environmental conditions. In the current experiments, metabolic responses of wheat to osmotic stress induced by different kinds of osmolytes were studied under iso-osmotic stress conditions. A single wheat genotypes was treated with PEG-6000, mannitol, sorbitol or NaCl at such concentrations which reduce the osmotic potential of the culture media to the same level (-0.8MPa). The metabolic changes, including the accumulation of proline, glycine betaine (GB) and sugar metabolites (glucose, fructose, galactose, maltose and sucrose) were studied both in the leaves and roots together with monitoring the plant growth, changes in the photosynthetic activity and chlorophyll content of the leaves. In addition, the polyamine metabolism was also investigated. Although all osmolytes inhibited growth similarly, they induced different physiological and metabolic responses: the CO2 assimilation capacity, RWC content and the osmotic potential (ψπ) of the leaves decreased intensively, especially after mannitol and sorbitol treatments, followed by NaCl treatment, while PEG caused only a slight modification in these parameters. In the roots, the most pronounced decrease of ψπ was found after salt-treatments, followed by PEG treatment. Osmotic stress induced the accumulation of proline, glycine betaine and soluble sugars, such as fructose, glucose, sucrose and galactose in both the root and leaf sap. Specific metabolic response of roots and leaves under PEG included accumulation of glucose, fructose and GB (in the roots); sucrose, galactose and proline synthesis were dominant under NaCl stress while exposure to mannitol and sorbitol triggered polyamine metabolism and overproduction of maltose. The amount of those metabolites was time-dependent in the manner that longer exposure to iso-osmotic stress conditions stimulated the sugar metabolic routes. Our results showed that the various osmolytes activated different metabolic processes even under iso-osmotic stress conditions and these changes also differed in the leaves and roots.
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Affiliation(s)
- Eva Darko
- Department of Plant Physiology, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Balázs Végh
- Department of Plant Physiology, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Radwan Khalil
- Botany Department, Faculty of Science, Benha University, Benha, Egypt
| | - Tihana Marček
- Department of Food and Nutrition Research, Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Gabriella Szalai
- Department of Plant Physiology, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Magda Pál
- Department of Plant Physiology, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Tibor Janda
- Department of Plant Physiology, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
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Gloria A, Zambelli D, Carluccio A, Cunto M, Ponzio P, Contri A. Is the protective effect of egg yolk against osmotic and cryogenic damage on dog spermatozoa dose-dependent? Anim Reprod Sci 2019; 213:106259. [PMID: 31987317 DOI: 10.1016/j.anireprosci.2019.106259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/02/2019] [Accepted: 12/13/2019] [Indexed: 11/19/2022]
Abstract
Egg yolk (EY) is conventionally used to reduce sperm cryodamage, however, there has not be evaluation of whether there is a dose-dependent effect with inclusion of EY in semen extender. To enhance the knowledge about the protective effect of EY during cryopreservation of dog semen, a specific study was designed to evaluate the dose-dependent protection of the EY against osmotic and cryogenic damage of dog sperm. In the first experiment, sperm stored in an extender that contained graded EY concentrations (0 %, 5 %, 10 %, and 20 %) were diluted with hypo- or hyper-osmotic solutions (final osmolality of 75, 150, 300, 500, 1000 mOsm/kg). Results from sperm kinetic, membrane integrity (MI), mitochondrial activity, and normal morphology evaluations indicated osmotic stress has especially marked effects on the kinetic capacity of spermatozoa, however, there were no direct effects on mitochondrial activity. In both hypo- and hyper-osmotic conditions, EY had a protective effect regardless of concentration. In the second experiment, semen samples were diluted in extenders at increasing EY concentrations (0 %, 5 %, 10 %, and 20 %) and cryopreserved. Effects on sperm kinetics, membrane and acrosome integrity and mitochondrial membrane potential indicated there was improved sperm viability after thawing when the EY concentration was 5 % and 10 %, and lesser viability when it was 20 %. These results indicate, for the first time, that EY reduces osmotic and cryogenic damage when used at 5 % or 10 % concentrations, and that these concentrations can be used to protect dog spermatozoa more effectively than the conventionally used concentration (20 %).
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Affiliation(s)
- Alessia Gloria
- Faculty of Veterinary Medicine, University of Teramo, Loc. Piano d'Accio, 64100 Teramo, Italy
| | - Daniele Zambelli
- Department of Veterinary Medical Sciences, Alma Mater Studiorum - University of Bologna, via Tolara di Sopra 50, 40064 Ozzano dell'Emilia, Bologna, Italy
| | - Augusto Carluccio
- Faculty of Veterinary Medicine, University of Teramo, Loc. Piano d'Accio, 64100 Teramo, Italy
| | - Marco Cunto
- Department of Veterinary Medical Sciences, Alma Mater Studiorum - University of Bologna, via Tolara di Sopra 50, 40064 Ozzano dell'Emilia, Bologna, Italy
| | - Patrizia Ponzio
- Department of Veterinary Sciences, University of Turin, largo Braccini 2, 10095 Grugliasco, Turin, Italy
| | - Alberto Contri
- Faculty of Biosciences and Technologies for Agriculture Food and Environment, University of Teramo, via Balzarini 1, 64100 Teramo, Italy.
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Rustamova SI, Tsiferova NA, Khamidova OJ, Kurbannazarova RS, Merzlyak PG, Khushbaktova ZA, Syrov VN, Botirov EK, Eshbakova KA, Sabirov RZ. Effect of plant flavonoids on the volume regulation of rat thymocytes under hypoosmotic stress. Pharmacol Rep 2019; 71:1079-1087. [PMID: 31629088 DOI: 10.1016/j.pharep.2019.05.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 05/07/2019] [Accepted: 05/27/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Cell volume regulation and volume-regulated anion channels are critical for cell survival in non-isosmotic conditions, and dysregulation of this system is detrimental. Although genes and proteins underlying this basic cellular machinery were recently identified, the pharmacology remains poorly explored. METHODS We examined effects of 16 flavonoids on the regulatory volume decrease (RVD) of thymocytes under hypoosmotic stress assessed by light transmittance and on the activity of volume-sensitive chloride channel by patch-clamp technique. RESULTS Comparison of effects of flavonoids on RVD revealed a group of four active substances with lehmannin being the strongest inhibitor (IC50 = 8.8 μM). Structure-functional comparison suggested that hydrophobicity brought about by methoxy, prenyl or lavandulyl groups as well as by the absence of glucosyl fragment together with localization of the phenyl ring B at the position C2 (which is at C3 in totally inactive isoflavones) are important structural determinants for the flavonoids activity as volume regulation inhibitors. All active flavonoids suppressed RVD under Gramicidin D-NMDG hypotonic stress conditions when cationic permeability was increased by an ionophore, gramicidin D, with all extracellular monovalent cations replaced with bulky NMDG+ suggesting that they target volume-sensitive anionic permeability. While effects of hispidulin and pulicarin were only partial, lehmannin and pinocembrin completely abolished RVD under Gramicidin D-NMDG conditions. In direct patch-clamp experiments, lehmannin and pinocembrin produced a strong inhibiting effect on the swelling-induced whole-cell chloride conductance in a voltage-independent manner. CONCLUSION Lehmannin, pinocembrin, and possibly hispidulin and pulicarin may serve as leads for developing effective low-toxic immunomodulators.
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Affiliation(s)
- Sarvinoz I Rustamova
- Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan; Institute of Biophysics and Biochemistry, National University of Uzbekistan, Tashkent, Uzbekistan
| | - Nargiza A Tsiferova
- Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan; Institute of Biophysics and Biochemistry, National University of Uzbekistan, Tashkent, Uzbekistan; Center for Advanced Technologies, Tashkent, Uzbekistan
| | - Ozoda J Khamidova
- Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan; Institute of Biophysics and Biochemistry, National University of Uzbekistan, Tashkent, Uzbekistan
| | - Ranokhon Sh Kurbannazarova
- Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan; Institute of Biophysics and Biochemistry, National University of Uzbekistan, Tashkent, Uzbekistan
| | - Petr G Merzlyak
- Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan; Institute of Biophysics and Biochemistry, National University of Uzbekistan, Tashkent, Uzbekistan
| | - Zainab A Khushbaktova
- Institute of Chemistry of Plant Substances, Academy Sciences of Uzbekistan, Tashkent, Uzbekistan
| | - Vladimir N Syrov
- Institute of Chemistry of Plant Substances, Academy Sciences of Uzbekistan, Tashkent, Uzbekistan
| | | | - Kamila A Eshbakova
- Institute of Chemistry of Plant Substances, Academy Sciences of Uzbekistan, Tashkent, Uzbekistan
| | - Ravshan Z Sabirov
- Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan; Institute of Biophysics and Biochemistry, National University of Uzbekistan, Tashkent, Uzbekistan; Department of Biophysics, National University of Uzbekistan, Tashkent, Uzbekistan.
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DU HY, Chen GS, Yu JM, Bao YY, Liu GT, Liu HP, Gupta R. Involvement of putrescine in osmotic stress-induced ABA signaling in leaves of wheat seedlings. J Biosci 2019; 44:136. [PMID: 31894117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
To elucidate one mechanism by which putrescine (Put) functions in plant signaling under osmotic stress, Put and ABA contents, and plasma membrane-NADPH oxidase (PM-NOX) activity were detected in wheat seedling leaves. Under osmotic stress, ABA and Put contents, PM-NOX activity, and PM-NOX-dependent O2.- production all increased. The inhibitor tungstate (T) of ABA bio-synthesis reduced the increases in ABA and Put contents under osmotic stress. The inhibitor D-arginine (D-Arg) of Put bio-synthesis didn't reduce osmotic-induced increase of ABA, but it inhibited the increases of PM-NOX activity and O2 . - production, and the inhibitory effects were reversed by exogenous Put. These findings suggested that ABA might regulate Put biosynthesis, and Put might regulate PM-NOX activity. Treatments with three inhibitors imidazole (I), diphenylene iodonium (DPI) and pyridine (P) of PM-NOX reduced significantly not only O2 . - production, but also the stress-induced increase of Put content, which indicated that O2 . - production might regulate Put biosynthesis. Treatments with EGTA (Ca2+ chelator), La3+ and verapamil (V) (Ca2+ channel blockers) reduced significantly the stress-induced increase of Put content, which suggested that Ca2+ might regulate Put biosynthesis. With these findings, it could be concluded that Put was involved in ABA signaling induced by osmotic stress via regulating PM-NOX activity in wheat seedling leaves.
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Affiliation(s)
- H Y DU
- College of Life Science and Agronomy/Henan Key Laboratory of Crop Molecular Breeding and Bioreactor, Zhoukou Normal University, Zhoukou 466001, Henan, China
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Tsugama D, Yoon HS, Fujino K, Liu S, Takano T. Protein phosphatase 2A regulates the nuclear accumulation of the Arabidopsis bZIP protein VIP1 under hypo-osmotic stress. J Exp Bot 2019; 70:6101-6112. [PMID: 31504762 PMCID: PMC6859724 DOI: 10.1093/jxb/erz384] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/16/2019] [Indexed: 05/21/2023]
Abstract
VIP1 is a bZIP transcription factor in Arabidopsis thaliana. When cells are exposed to mechanical stress, VIP1 transiently accumulates in the nucleus, where it regulates the expression of its target genes and suppresses mechanical stress-induced root waving. The nuclear-cytoplasmic shuttling of VIP1 is regulated by phosphorylation and calcium-dependent signaling, but specific regulators of these processes remain to be identified. Here, inhibitors of protein phosphatase 2A (PP2A) are shown to inhibit both the mechanical stress-induced dephosphorylation and nuclear accumulation of VIP1. The PP2A B subunit, which recruits substrates of PP2A holoenzyme, is classified into B, B', B'', and B''' families. Using bimolecular fluorescence complementation, in vitro pull-down, and yeast two-hybrid assays, we show that VIP1 interacts with at least two of the six members of the Arabidopsis PP2A B''-family subunit, which have calcium-binding EF-hand motifs. VIP1AAA, a constitutively nuclear-localized VIP1 variant with substitutions in putative phosphorylation sites of VIP1, suppressed the root waving induced by VIP1-SRDX (a repression domain-fused variant of VIP1). These results support the idea that VIP1 is dephosphorylated by PP2A and that the dephosphorylation suppresses the root waving. The phosphorylation sites of VIP1 and its homologs were narrowed down by in vitro phosphorylation, yeast two-hybrid, and protein subcellular localization assays.
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Affiliation(s)
- Daisuke Tsugama
- Asian Natural Environmental Science Center (ANESC), The University of Tokyo, Midori-cho, Nishitokyo-shi, Tokyo, Japan
- Laboratory of Crop Physiology, Research Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9 Kita-ku, Sapporo-shi, Hokkaido, Japan
- Correspondence:
| | - Hyuk Sung Yoon
- Asian Natural Environmental Science Center (ANESC), The University of Tokyo, Midori-cho, Nishitokyo-shi, Tokyo, Japan
- Laboratory of Crop Physiology, Research Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9 Kita-ku, Sapporo-shi, Hokkaido, Japan
| | - Kaien Fujino
- Laboratory of Crop Physiology, Research Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9 Kita-ku, Sapporo-shi, Hokkaido, Japan
| | - Shenkui Liu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin’an, Hangzhou, PR China
| | - Tetsuo Takano
- Asian Natural Environmental Science Center (ANESC), The University of Tokyo, Midori-cho, Nishitokyo-shi, Tokyo, Japan
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Neubert P, Weichselbaum A, Reitinger C, Schatz V, Schröder A, Ferdinand JR, Simon M, Bär AL, Brochhausen C, Gerlach RG, Tomiuk S, Hammer K, Wagner S, van Zandbergen G, Binger KJ, Müller DN, Kitada K, Clatworthy MR, Kurts C, Titze J, Abdullah Z, Jantsch J. HIF1A and NFAT5 coordinate Na +-boosted antibacterial defense via enhanced autophagy and autolysosomal targeting. Autophagy 2019; 15:1899-1916. [PMID: 30982460 PMCID: PMC6844503 DOI: 10.1080/15548627.2019.1596483] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 02/20/2019] [Accepted: 02/22/2019] [Indexed: 12/17/2022] Open
Abstract
Infection and inflammation are able to induce diet-independent Na+-accumulation without commensurate water retention in afflicted tissues, which favors the pro-inflammatory activation of mouse macrophages and augments their antibacterial and antiparasitic activity. While Na+-boosted host defense against the protozoan parasite Leishmania major is mediated by increased expression of the leishmanicidal NOS2 (nitric oxide synthase 2, inducible), the molecular mechanisms underpinning this enhanced antibacterial defense of mouse macrophages with high Na+ (HS) exposure are unknown. Here, we provide evidence that HS-increased antibacterial activity against E. coli was neither dependent on NOS2 nor on the phagocyte oxidase. In contrast, HS-augmented antibacterial defense hinged on HIF1A (hypoxia inducible factor 1, alpha subunit)-dependent increased autophagy, and NFAT5 (nuclear factor of activated T cells 5)-dependent targeting of intracellular E. coli to acidic autolysosomal compartments. Overall, these findings suggest that the autolysosomal compartment is a novel target of Na+-modulated cell autonomous innate immunity. Abbreviations: ACT: actins; AKT: AKT serine/threonine kinase 1; ATG2A: autophagy related 2A; ATG4C: autophagy related 4C, cysteine peptidase; ATG7: autophagy related 7; ATG12: autophagy related 12; BECN1: beclin 1; BMDM: bone marrow-derived macrophages; BNIP3: BCL2/adenovirus E1B interacting protein 3; CFU: colony forming units; CM-H2DCFDA: 5-(and-6)-chloromethyl-2',7'-dichlorodihydrofluorescein diacetate, acetyl ester; CTSB: cathepsin B; CYBB: cytochrome b-245 beta chain; DAPI: 4,6-diamidino-2-phenylindole; DMOG: dimethyloxallyl glycine; DPI: diphenyleneiodonium chloride; E. coli: Escherichia coli; FDR: false discovery rate; GFP: green fluorescent protein; GSEA: gene set enrichment analysis; GO: gene ontology; HIF1A: hypoxia inducible factor 1, alpha subunit; HUGO: human genome organization; HS: high salt (+ 40 mM of NaCl to standard cell culture conditions); HSP90: heat shock 90 kDa proteins; LDH: lactate dehydrogenase; LPS: lipopolysaccharide; Lyz2/LysM: lysozyme 2; NFAT5/TonEBP: nuclear factor of activated T cells 5; MΦ: macrophages; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; MFI: mean fluorescence intensity; MIC: minimum inhibitory concentration; MOI: multiplicity of infection; MTOR: mechanistic target of rapamycin kinase; NaCl: sodium chloride; NES: normalized enrichment score; n.s.: not significant; NO: nitric oxide; NOS2/iNOS: nitric oxide synthase 2, inducible; NS: normal salt; PCR: polymerase chain reaction; PGK1: phosphoglycerate kinase 1; PHOX: phagocyte oxidase; RFP: red fluorescent protein; RNA: ribonucleic acid; ROS: reactive oxygen species; sCFP3A: super cyan fluorescent protein 3A; SBFI: sodium-binding benzofuran isophthalate; SLC2A1/GLUT1: solute carrier family 2 (facilitated glucose transporter), member 1; SQSTM1/p62: sequestosome 1; ULK1: unc-51 like kinase 1; v-ATPase: vacuolar-type H+-ATPase; WT: wild type.
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Affiliation(s)
- Patrick Neubert
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | - Andrea Weichselbaum
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | - Carmen Reitinger
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | - Valentin Schatz
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | - Agnes Schröder
- Institute of Orthodontics, University Hospital of Regensburg, Regensburg, Germany
| | - John R. Ferdinand
- Molecular Immunity Unit, Department of Medicine, MRC-Laboratory of Molecular Biology, University of Cambridge, Cambridge, UK
| | - Michaela Simon
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | - Anna-Lorena Bär
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | | | | | | | - Karin Hammer
- Department of Internal Medicine II, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | - Stefan Wagner
- Department of Internal Medicine II, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | | | - Katrina J. Binger
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Australia
| | - Dominik N. Müller
- Experimental and Clinical Research Center, a joint cooperation of Max-Delbrück Center for Molecular Medicine and Charité-Universitätsmedizin Berlin, Berlin, Germany
- Max-Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Kento Kitada
- Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore
| | - Menna R. Clatworthy
- Molecular Immunity Unit, Department of Medicine, MRC-Laboratory of Molecular Biology, University of Cambridge, Cambridge, UK
| | - Christian Kurts
- Institute of Experimental Immunology, University of Bonn, Bonn, Germany
| | - Jens Titze
- Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore
| | - Zeinab Abdullah
- Institute of Experimental Immunology, University of Bonn, Bonn, Germany
| | - Jonathan Jantsch
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
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Mu C, Zhou L, Shan L, Li F, Li Z. Phosphatase GhDsPTP3a interacts with annexin protein GhANN8b to reversely regulate salt tolerance in cotton (Gossypium spp.). New Phytol 2019; 223:1856-1872. [PMID: 30985940 DOI: 10.1111/nph.15850] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 04/08/2019] [Indexed: 05/25/2023]
Abstract
Salinity is among the major factors limiting crop production worldwide. Despite having moderate salt-tolerance, cotton (Gossypium spp.) suffers severe yield losses to salinity stresses, largely due to being grown on saline-alkali and dry lands. To identify genetic determinants conferring salinity tolerance in cotton, we deployed a functional genomic screen using a cotton cDNA library in a virus-induced gene silencing (VIGS) vector. We have revealed that silencing of GhDsPTP3a, which encodes a protein phosphatase, increases cotton tolerance to salt stress. Yeast two-hybrid screens indicated that GhDsPTP3a interacts with GhANN8b, an annexin protein, which plays a positive role in regulating cotton response to salinity stress. Salt stress induces GhANN8b phosphorylation, which is subsequently dephosphorylated by GhDsPTP3a. Ectopic expression of GhDsPTP3a and GhANN8b oppositely regulates plant salt tolerance and calcium influx. In addition, we have revealed that silencing of GhDsPTP3a or GhANN8b exerts opposing roles in regulating GhSOS1 transcript levels, and ectopic expression of GhANN8b elevates Na+ efflux in Arabidopsis under salinity stress. Our study demonstrates that a cotton phosphatase GhDsPTP3a and an annexin protein GhANN8b interact and reversely modulate Ca2+ and Na+ fluxes in cotton salinity responses.
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Affiliation(s)
- Chun Mu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Lin Zhou
- State Key Laboratory of Plant Physiology and Biochemistry, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Libo Shan
- Department of Plant Pathology and Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX, 77843, USA
| | - Fangjun Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Zhaohu Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
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Biswas A, Kashyap P, Datta S, Sengupta T, Sinha B. Cholesterol Depletion by MβCD Enhances Cell Membrane Tension and Its Variations-Reducing Integrity. Biophys J 2019; 116:1456-1468. [PMID: 30979551 PMCID: PMC6486507 DOI: 10.1016/j.bpj.2019.03.016] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 01/22/2019] [Accepted: 03/14/2019] [Indexed: 11/23/2022] Open
Abstract
Cholesterol depletion by methyl-β-cyclodextrin (MβCD) remodels the plasma membrane’s mechanics in cells and its interactions with the underlying cytoskeleton, whereas in red blood cells, it is also known to cause lysis. Currently it’s unclear if MβCD alters membrane tension or only enhances membrane-cytoskeleton interactions—and how this relates to cell lysis. We map membrane height fluctuations in single cells and observe that MβCD reduces temporal fluctuations robustly but flattens spatial membrane undulations only slightly. Utilizing models explicitly incorporating membrane confinement besides other viscoelastic factors, we estimate membrane mechanical parameters from the fluctuations’ frequency spectrum. This helps us conclude that MβCD enhances membrane tension and does so even on ATP-depleted cell membranes where this occurs despite reduction in confinement. Additionally, on cholesterol depletion, cell membranes display higher intracellular heterogeneity in the amplitude of spatial undulations and membrane tension. MβCD also has a strong impact on the cell membrane’s tenacity to mechanical stress, making cells strongly prone to rupture on hypo-osmotic shock with larger rupture diameters—an effect not hindered by actomyosin perturbations. Our study thus demonstrates that cholesterol depletion increases membrane tension and its variability, making cells prone to rupture independent of the cytoskeletal state of the cell.
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Affiliation(s)
- Arikta Biswas
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, India
| | - Purba Kashyap
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, India
| | - Sanchari Datta
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, India
| | - Titas Sengupta
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, India
| | - Bidisha Sinha
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, India.
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33
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Ma Y, Wang L, Wang J, Zhong Y, Cheng ZM(M. Isolation and expression analysis of Salt Overly Sensitive gene family in grapevine (Vitisvinifera) in response to salt and PEG stress. PLoS One 2019; 14:e0212666. [PMID: 30889180 PMCID: PMC6424420 DOI: 10.1371/journal.pone.0212666] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 02/07/2019] [Indexed: 11/18/2022] Open
Abstract
Salt stress is one of the major environmental constraints for the production and yield of grape (Vitis vinifera) worldwide. The SOS3 gene family is part of the Salt Overly Sensitive (SOS) signaling pathway, a well-defined signaling pathway known to play a role in plant response to salt stress. In this study, the grapevine SOS3 gene family was annotated and the role of the annotated genes in salinity stress response was characterized. Nine grapevine SOS3 genes was identified in the grapevine genome and was subsequently analyzed. The expression patterns of the nine VviSOS3 genes, as determined by reverse transcription quantitative PCR (RT-qPCR), varied greatly in leaves, roots, and stems of in-vitro grown Pinot noir grapevine cultivar(PN40024) in response to salt (250mM NaCl) and polyethylene glycol 6000 (PEG, osmolality equal to the salt treatment) treatments over a 36h time period. All of the VviSOS3 genes, except VviSOS3.7, were up-regulated in leaves in response to the salt and PEG treatments. The majority of VviSOS3 genes, except VviSOS3.8 were up-regulated in roots in response to the PEG stress, with an opposite expression pattern in the root and stem in response to salt stress. The salinity treatment decreased the soluble protein content. Based on the expression pattern and physiological data, VviSOS3.7 and VviSOS3.8 were identified as candidate genes for further functional characterizations regarding their role in the response of grapevine to salt stress.
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Affiliation(s)
- Yuanchun Ma
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu province, The People’s Republic of China
| | - Li Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu province, The People’s Republic of China
| | - Jiaoyang Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu province, The People’s Republic of China
| | - Yan Zhong
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu province, The People’s Republic of China
- * E-mail: , (ZMC); (YZ)
| | - Zong-Ming (Max) Cheng
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu province, The People’s Republic of China
- Department of Plant Sciences, University of Tennessee, Knoxville, United States of America
- * E-mail: , (ZMC); (YZ)
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Li X, Wei W, Li F, Zhang L, Deng X, Liu Y, Yang S. The Plastidial Glyceraldehyde-3-Phosphate Dehydrogenase Is Critical for Abiotic Stress Response in Wheat. Int J Mol Sci 2019; 20:E1104. [PMID: 30836662 PMCID: PMC6429432 DOI: 10.3390/ijms20051104] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 02/01/2019] [Accepted: 02/01/2019] [Indexed: 11/16/2022] Open
Abstract
Plastidial glyceraldehyde-3-phosphate dehydrogenase (GAPDH, GAPCp) are ubiquitous proteins that play pivotal roles in plant metabolism and are involved in stress response. However, the mechanism of GAPCp's function in plant stress resistance process remains unclear. Here we isolated, identified, and characterized the TaGAPCp1 gene from Chinese Spring wheat for further investigation. Subcellular localization assay indicated that the TaGAPCp1 protein was localized in the plastid of tobacco (Nicotiana tobacum) protoplast. In addition, quantitative real-time PCR (qRT-PCR) unraveled that the expression of TaGAPCp1 (GenBank: MF477938.1) was evidently induced by osmotic stress and abscisic acid (ABA). This experiment also screened its interaction protein, cytochrome b6-f complex iron sulfite subunit (Cyt b6f), from the wheat cDNA library using TaGAPCp1 protein as a bait via the yeast two-hybrid system (Y2H) and the interaction between Cyt b6f and TaGAPCp1 was verified by bimolecular fluorescence complementation assay (BiFC). Moreover, H₂O₂ could also be used as a signal molecule to participate in the process of Cyt b6f response to abiotic stress. Subsequently, we found that the chlorophyll content in OE-TaGAPCp1 plants was significantly higher than that in wild type (WT) plants. In conclusion, our data revealed that TaGAPCp1 plays an important role in abiotic stress response in wheat and this stress resistance process may be completed by H₂O₂-mediated ABA signaling pathway.
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Affiliation(s)
- Xixi Li
- College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Wenjie Wei
- College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Fangfang Li
- College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Lin Zhang
- College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Xia Deng
- College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Ying Liu
- College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Shushen Yang
- College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China.
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Chen R, Ma J, Luo D, Hou X, Ma F, Zhang Y, Meng Y, Zhang H, Guo W. CaMADS, a MADS-box transcription factor from pepper, plays an important role in the response to cold, salt, and osmotic stress. Plant Sci 2019; 280:164-174. [PMID: 30823994 DOI: 10.1016/j.plantsci.2018.11.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/05/2018] [Accepted: 11/28/2018] [Indexed: 05/22/2023]
Abstract
MADS-box family transcription factors play essential roles in the growth and development of plants, and some MADS-box genes have also been found to participate in the stress-response. At present, little information regarding stress-related MADS-box genes is available in pepper. We isolated a MADS-box transcription factor gene from Capsicum annuum, which we named CaMADS. CaMADS expression is induced by low and high temperature, salt, and osmotic stress, and also by abscisic acid (ABA), salicylic acid (SA), methyl-jasmonic acid (MeJA), and CaCl2. To understand the function of CaMADS in the abiotic stress response, we generated pepper plants in which CaMADS expression was down-regulated using VIGS (Virus-induced Gene Silencing), and also transgenic Arabidopsis plants overexpressing CaMADS. We found that CaMADS-down-regulated seedlings were more seriously injured than WT after cold, NaCl, and mannitol treatment, and showed increased electrolyte leakage, malondialdehyde (MDA) levels, and lower chlorophyll content. CaMADS-overexpressing Arabidopsis plants were more tolerant to these stresses than WT, and showed significantly high survival rates and lower H2O2 and super oxide radical contents after cold treatment. CaMADS-overexpressing plants had higher germination rates and percentages of green cotyledons following NaCl and mannitol treatment. Root lengths and fresh weight in CaMADS-overexpressing plants were also significantly longer and higher, respectively, than in WT plants. Taken together, our results suggest that CaMADS functions as a positive stress-responsive transcription factor in the cold, salt, and osmotic stress signaling pathways.
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Affiliation(s)
- Rugang Chen
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, China.
| | - Jihui Ma
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Dan Luo
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaomeng Hou
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Fang Ma
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yumeng Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yuancheng Meng
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Huafeng Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Weili Guo
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
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Yin H, Li M, Li D, Khan SA, Hepworth SR, Wang SM. Transcriptome analysis reveals regulatory framework for salt and osmotic tolerance in a succulent xerophyte. BMC Plant Biol 2019; 19:88. [PMID: 30819118 PMCID: PMC6394007 DOI: 10.1186/s12870-019-1686-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 02/15/2019] [Indexed: 05/19/2023]
Abstract
BACKGROUND Zygophyllum xanthoxylum is a succulent xerophyte with remarkable tolerance to diverse abiotic stresses. Previous studies have revealed important physiological mechanisms and identified functional genes associated with stress tolerance. However, knowledge of the regulatory genes conferring stress tolerance in this species is poorly understood. RESULTS Here, we present a comprehensive analysis of regulatory genes based on the transcriptome of Z. xanthoxylum roots exposed to osmotic stress and salt treatments. Significant changes were observed in transcripts related to known and obscure stress-related hormone signaling pathways, in particular abscisic acid and auxin. Significant changes were also found among key classes of early response regulatory genes encoding protein kinases, transcription factors, and ubiquitin-mediated proteolysis machinery. Network analysis shows a highly integrated matrix formed by these conserved and novel gene products associated with osmotic stress and salt in Z. xanthoxylum. Among them, two previously uncharacterized NAC (NAM/ATAF/CUC) transcription factor genes, ZxNAC083 (Unigene16368_All) and ZxNAC035 (CL6534.Contig1_All), conferred tolerance to salt and drought stress when constitutively overexpressed in Arabidopsis plants. CONCLUSIONS This study provides a unique framework for understanding osmotic stress and salt adaptation in Z. xanthoxylum including novel gene targets for engineering stress tolerance in susceptible crop species.
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Affiliation(s)
- Hongju Yin
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020 People’s Republic of China
| | - Mengzhan Li
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020 People’s Republic of China
| | - Dingding Li
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020 People’s Republic of China
| | - Sardar-Ali Khan
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020 People’s Republic of China
| | - Shelley R. Hepworth
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020 People’s Republic of China
- Department of Biology, Institute of Biochemistry, Carleton University, Ottawa, ON Canada
| | - Suo-Min Wang
- State Key Laboratory of Grassland Agro-ecosystems; Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs; College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730020 People’s Republic of China
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Zhao Y, Liu M, He L, Li X, Wang F, Yan B, Wei J, Zhao C, Li Z, Xu J. A cytosolic NAD +-dependent GPDH from maize (ZmGPDH1) is involved in conferring salt and osmotic stress tolerance. BMC Plant Biol 2019; 19:16. [PMID: 30626322 PMCID: PMC6327487 DOI: 10.1186/s12870-018-1597-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 12/10/2018] [Indexed: 05/07/2023]
Abstract
BACKGROUND Plant glycerol-3-phosphate dehydrogenase (GPDH) catalyzes the reduction of dihydroxyacetone phosphate (DHAP) to produce glycerol-3-phosphate (G-3-P), and plays a key role in glycerolipid metabolism as well as stress responses. RESULTS In this study, we report the cloning, enzymatic and physiological characterization of a cytosolic NAD+-dependent GPDH from maize. The prokaryotic expression of ZmGPDH1 in E.coli showed that the enzyme encoded by ZmGPDH1 was capable of catalyzing the reduction of DHAP in the presence of NADH. The functional complementation analysis revealed that ZmGPDH1 was able to restore the production of glycerol-3-phosphate and glycerol in AtGPDHc-deficient mutants. Furthermore, overexpression of ZmGPDH1 remarkably enhanced the tolerance of Arabidopsis to salinity/osmotic stress by enhancing the glycerol production, the antioxidant enzymes activities (SOD, CAT, APX) and by maintaining the cellular redox homeostasis (NADH/NAD+, ASA/DHA, GSH/GSSG). ZmGPDH1 OE Arabidopsis plants also exhibited reduced leaf water loss and stomatal aperture under salt and osmotic stresses. Quantitative real-time RT-PCR analyses revealed that overexpression of ZmGPDH1 promoted the transcripts accumulation of genes involved in cellular redox homeostasis and ROS-scavenging system. CONCLUSIONS Together, these data suggested that ZmGPDH1 is involved in conferring salinity and osmotic tolerance in Arabidopsis through modulation of glycerol synthesis, stomatal closure, cellular redox and ROS homeostasis.
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Affiliation(s)
- Ying Zhao
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Meng Liu
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Lin He
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Xin Li
- Key Lab of Maize Genetics and Breeding, Heilongjiang Academy of Agricultural Sciences, Harbin, 150000 China
| | - Feng Wang
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Bowei Yan
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Jinpeng Wei
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Changjiang Zhao
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Zuotong Li
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Jingyu Xu
- Key Lab of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Daqing Key Lab of Straw Reclamation Technology Research and Development, College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
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Sahu M, Kar RK. Possible interaction of ROS, antioxidants and ABA to survive osmotic stress upon acclimation in Vigna radiata L. Wilczek seedlings. Plant Physiol Biochem 2018; 132:415-423. [PMID: 30290333 DOI: 10.1016/j.plaphy.2018.09.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 09/14/2018] [Accepted: 09/27/2018] [Indexed: 05/26/2023]
Abstract
Acclimation is a process of adjustment to gradual environmental change that enables plants to survive further stress by triggering some tolerance mechanism possibly involving ABA, ROS and oxidative metabolism. Here we have studied acclimation responses in terms of the performances with regard to physiological (growth and relative water content) and biochemical (chlorophyll, carotenoids, protein, malondialdehyde, sugar content) attributes, ABA production and stomatal sensitivity to exogenous ABA, extracellular ROS production and activation of antioxidant system. Our study reveals that repeated exposure to short-term mild water stress simulated by polyethylene glycol (PEG-6000) induces acclimation in mung bean (Vigna radiata L. Wilczek) seedlings. Acclimation induced tolerance was associated with reduced leaf size and enhanced root growth, accumulation of soluble sugar as osmoprotectant, maintenance of water potential, lessening of membrane damage as indicated by lower MDA content. Acclimated mung bean seedlings have shown greater degree of tolerance through increased production of and enhanced sensitivity to ABA (as reflected by faster stomatal closure), enhanced production of extracellular O2.- and H2O2 and the elevated activities of antioxidative enzymes to control the oxidative burst. Taken together, the results convey that acclimated seedlings minimize osmotic stress-induced damage through a possible network of ABA, ROS and antioxidants.
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Affiliation(s)
- Moumita Sahu
- Plant Physiology and Biochemistry Laboratory, Department of Botany, Visva-Bharati University, Santiniketan, 731 235, West Bengal, India
| | - Rup Kumar Kar
- Plant Physiology and Biochemistry Laboratory, Department of Botany, Visva-Bharati University, Santiniketan, 731 235, West Bengal, India.
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Huang L, Yin X, Sun X, Yang J, Rahman MZ, Chen Z, Wang X. Expression of a Grape VqSTS36-Increased Resistance to Powdery Mildew and Osmotic Stress in Arabidopsis but Enhanced Susceptibility to Botrytis cinerea in Arabidopsis and Tomato. Int J Mol Sci 2018; 19:E2985. [PMID: 30274342 PMCID: PMC6213015 DOI: 10.3390/ijms19102985] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 09/20/2018] [Accepted: 09/25/2018] [Indexed: 11/19/2022] Open
Abstract
Stilbene synthase genes make a contribution to improving the tolerances of biotic and abiotic stress in plants. However, the mechanisms mediated by these STS genes remain unclear. To provide insight into the role of STS genes defense against biotic and abiotic stress, we overexpressed VqSTS36 in Arabidopsis thaliana and tomato (Micro-Tom) via Agrobacterium-mediated transformation. VqSTS36-transformed Arabidopsis lines displayed an increased resistance to powdery mildew, but both VqSTS36-transformed Arabidopsis and tomato lines showed the increased susceptibility to Botrytis cinerea. Besides, transgenic Arabidopsis lines were found to confer tolerance to salt and drought stress in seed and seedlings. When transgenic plants were treated with a different stress, qPCR assays of defense-related genes in transgenic Arabidopsis and tomato suggested that VqSTS36 played a specific role in different phytohormone-related pathways, including salicylic acid, jasmonic acid, and abscisic acid signaling pathways. All of these results provided a better understanding of the mechanism behind the role of VqSTS36 in biotic and abiotic stress.
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Affiliation(s)
- Li Huang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China.
| | - Xiangjing Yin
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China.
| | - Xiaomeng Sun
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China.
| | - Jinhua Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China.
| | - Mohammad Zillur Rahman
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China.
| | - Zhiping Chen
- Shanghai Vocational College of Agriculture and Forestry, Shanghai 201699, China.
| | - Xiping Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China.
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Abstract
Salt stress is a major environmental factor limiting plant growth and productivity. A better understanding of the mechanisms mediating salt resistance will help researchers design ways to improve crop performance under adverse environmental conditions. Salt stress can lead to ionic stress, osmotic stress and secondary stresses, particularly oxidative stress, in plants. Therefore, to adapt to salt stress, plants rely on signals and pathways that re-establish cellular ionic, osmotic, and reactive oxygen species (ROS) homeostasis. Over the past two decades, genetic and biochemical analyses have revealed several core stress signaling pathways that participate in salt resistance. The Salt Overly Sensitive signaling pathway plays a key role in maintaining ionic homeostasis, via extruding sodium ions into the apoplast. Mitogen-activated protein kinase cascades mediate ionic, osmotic, and ROS homeostasis. SnRK2 (sucrose nonfermenting 1-related protein kinase 2) proteins are involved in maintaining osmotic homeostasis. In this review, we discuss recent progress in identifying the components and pathways involved in the plant's response to salt stress and their regulatory mechanisms. We also review progress in identifying sensors involved in salt-induced stress signaling in plants.
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Affiliation(s)
- Yongqing Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yan Guo
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
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Zhang X, Zhang W, Lang D, Cui J, Li Y. Silicon improves salt tolerance of Glycyrrhiza uralensis Fisch. by ameliorating osmotic and oxidative stresses and improving phytohormonal balance. Environ Sci Pollut Res Int 2018; 25:25916-25932. [PMID: 29961225 DOI: 10.1007/s11356-018-2595-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 06/18/2018] [Indexed: 05/10/2023]
Abstract
Si has a beneficial effect on improving plant tolerance to salt stress. Nevertheless, the mechanisms of Si in mediating the stress responses are still poorly understood. Glycyrrhiza uralensis Fisch. (G. uralensis), a well-known medicinal plant, possesses vast therapeutic potentials. In the present study, a pot experiment was conducted to investigate the long-term effects of Si on growth and physiobiochemical characteristics in 2-year-old G. uralensis subjected to different levels of salinity. Si markedly affected G. uralensis growth in a salt concentration-dependent manner and had no effect on G. uralensis growth under 6 g/kg NaCl. However, it partly reversed the reduction effect induced by 9 g/kg NaCl. In addition, Si significantly increased the contents of soluble sugar and protein but deceased proline content and thus increased water relations; Si markedly increased the activities of SOD, peroxidase, and CAT and further resulted in decreased MDA content and membrane permeability. Moreover, Si altered the levels of phytohormones and their balances. With correlation analysis and principal component analysis (PCA), root biomass had a significant negative correlation with MDA and membrane permeability while a positive correlation with indole-3-acetic acid and GA3. The PCA partitioned the total variance into three PCs contributing maximum (88.234%) to the total diversity among the salt stress with or without Si due to the study of various traits. In conclusion, Si exerts a beneficial property on salt-induced harmful effects in G. uralensis by relieving osmotic stress, improving water relations, and alleviating oxidative stress; thus, altering the levels and balance of phytohormones results in improved growth of salt-stressed G. uralensis.
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Affiliation(s)
- Xinhui Zhang
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China.
- Ningxia Engineering and Technology Research Center of Hui Medicine Modernization, Ningxia Collaborative Innovation Center of Hui Medicine, Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University, Yinchuan, 750004, China.
| | - Wenjin Zhang
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China
| | - Duoyong Lang
- Laboratory Animal Center, Ningxia Medical University, Yinchuan, 750004, China
| | - Jiajia Cui
- College of Agronomy, Gansu Agricultural University, Lanzhou, 730070, China
| | - Yuetong Li
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China
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Liang R, Chen J, Shi Y, Lu Y, Sarvajayakesavalu S, Xu X, Zheng X, Khan K, Su C. Toxicological effects on earthworms (Eisenia fetida) exposed to sub-lethal concentrations of BDE-47 and BDE-209 from a metabolic point. Environ Pollut 2018; 240:653-660. [PMID: 29775942 DOI: 10.1016/j.envpol.2018.04.145] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 04/30/2018] [Accepted: 04/30/2018] [Indexed: 06/08/2023]
Abstract
Earthworms improve the soil fertility and they are also sensitive to soil contaminants. Earthworms (Eisenia fetida), standard reference species, were usually chosen to culture and handle for toxicity tests. Metabolic responses in earthworms exposed to 2, 2', 4, 4'-tetrabromodiphenyl ether (BDE-47) and decabromodiphenyl ether (BDE-209) were inhibitory and interfered with basal metabolism. In this study, 1H-NMR based metabolomics was used to identify sensitive biomarkers and explore metabolic responses of earthworms under sub-lethal BDE-47 and BDE-209 concentrations for 14 days. The results revealed that lactate was accumulated in earthworms exposed to BDE-47 and BDE-209. Glutamate increased significantly when the concentration of BDE-47 and BDE-209 reached 10 mg/kg. The BDE-47 exposure above 50 mg/kg concentration decreased the content of fumarate significantly, which was noticed different from that of BDE-209. Whereas, the BDE-207 or BDE-209 exposure increased the protein degradation into amino acids in vivo. The increased betaine content indicated that earthworms may maintain the cell osmotic pressure and protected enzyme activity by metabolic regulation. Moreover, the BDE-47 and BDE-209 exposure at 10 mg/kg changed most of the metabolites significantly, indicating that the metabolic responses were more sensitive than growth inhibition and gene expression. The metabolomics results revealed the toxic modes of BDE-47 and BDE-209 act on the osmoregulation, energy metabolism, nerve activities, tricarboxylic acid cycle and amino acids metabolism. Furthermore, our results highlighted that the 1H-NMR based metabolomics is a strong tool for identifying sensitive biomarkers and eco-toxicological assessment.
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Affiliation(s)
- Ruoyu Liang
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Juan Chen
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yajuan Shi
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Yonglong Lu
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Suriyanarayanan Sarvajayakesavalu
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Vinayaka Mission's Research Foundation (Deemed to be University), Salem 636308, Tamil Nadu, India
| | - Xiangbo Xu
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100059, China
| | - Xiaoqi Zheng
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100059, China
| | - Kifayatullah Khan
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Department of Environmental and Conservation Sciences, University of Swat, Swat 19130, Pakistan
| | - Chao Su
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
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Batista PF, Costa AC, Müller C, Silva-Filho RDO, Barbosa da Silva F, Merchant A, Mendes GC, Nascimento KJT. Nitric oxide mitigates the effect of water deficit in Crambe abyssinica. Plant Physiol Biochem 2018; 129:310-322. [PMID: 29925047 DOI: 10.1016/j.plaphy.2018.06.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 05/28/2018] [Accepted: 06/11/2018] [Indexed: 06/08/2023]
Abstract
Crambe abyssinica is widely cultivated in the off-season in the Midwest region of Brazil with great potential for biodeisel production. Low precipitation is characteristic of this region, which can drastically affect the productivity of C. abyssinica. Signaling molecules, such as nitric oxide (NO), can potentially alleviate the effects of water stress on plants. Here we test whether nitric oxide, applied by donor sodium nitroprusside (SNP), can alleviate the occurrence of water deficit damages in Crambe plants and maintain physiological and biochemical processes. Crambe plants were sprayed with three doses of SNP (0, 75, and 150 μM) and were submitted to two water levels (100% and 50% of the maximum water holding capacity). After 32 and 136 h, leaves were analyzed to evaluate the concentration of NO, water relations, gas exchange, chlorophyll a fluorescence, chloroplastidic pigments, proline, malondialdehyde, hydrogen peroxide, superoxide anions, and the antioxidant enzymes activity. Application of SNP allowed the maintenance of gas exchange, chlorophyll fluorescence parameters, and activities of antioxidant enzymes in plants exposed to water deficit, as well as increased the concentration of NO, proline, chloroplastidic pigments and osmotic potential. The application of SNP also decreased the concentration of malondialdehyde and reactive oxygen species in plants submitted to water deficit. Thus, the application of SNP prevented the occurrence of symptoms of water deficit in Crambe plants, maintaining the physiological and biochemical responses at reference levels, even under stress conditions.
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Affiliation(s)
- Priscila Ferreira Batista
- Ecophysiology and Plant Productivity Laboratory, Goiano Federal Institute of Science and Technology - Campus Rio Verde, P.O. Box 66, 75901-970, Rio Verde, GO, Brazil
| | - Alan Carlos Costa
- Ecophysiology and Plant Productivity Laboratory, Goiano Federal Institute of Science and Technology - Campus Rio Verde, P.O. Box 66, 75901-970, Rio Verde, GO, Brazil.
| | - Caroline Müller
- Ecophysiology and Plant Productivity Laboratory, Goiano Federal Institute of Science and Technology - Campus Rio Verde, P.O. Box 66, 75901-970, Rio Verde, GO, Brazil
| | - Robson de Oliveira Silva-Filho
- Ecophysiology and Plant Productivity Laboratory, Goiano Federal Institute of Science and Technology - Campus Rio Verde, P.O. Box 66, 75901-970, Rio Verde, GO, Brazil
| | - Fábia Barbosa da Silva
- Stressed Plant Studies Laboratory, The University of São Paulo, Luiz de Queiroz College of Agriculture (ESALQ), P.O. Box 9, 13418- 900, Piracicaba, SP, Brazil
| | - Andrew Merchant
- Centre for Carbon Water and Food, The University of Sydney, Camden, 2570, NSW, Australia
| | - Giselle Camargo Mendes
- Ecophysiology and Plant Productivity Laboratory, Goiano Federal Institute of Science and Technology - Campus Rio Verde, P.O. Box 66, 75901-970, Rio Verde, GO, Brazil
| | - Kelly Juliane Telles Nascimento
- Ecophysiology and Plant Productivity Laboratory, Goiano Federal Institute of Science and Technology - Campus Rio Verde, P.O. Box 66, 75901-970, Rio Verde, GO, Brazil
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Chen T, Fluhr R. Singlet Oxygen Plays an Essential Role in the Root's Response to Osmotic Stress. Plant Physiol 2018; 177:1717-1727. [PMID: 29954869 PMCID: PMC6084678 DOI: 10.1104/pp.18.00634] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 06/19/2018] [Indexed: 05/21/2023]
Abstract
The high osmotic potentials in plants subjected to drought stress can be mimicked by the application of high molecular weight polyethylene glycol. Here, we quantified the effects of exposure to polyethylene glycol on the growth of the main and lateral roots of Arabidopsis (Arabidopsis thaliana) seedlings. The effects on root growth were highly correlated with the appearance of singlet oxygen, as visualized using the singlet oxygen-specific probe singlet oxygen sensor green. The production of singlet oxygen was followed by cell death, as indicated by the intracellular accumulation of propidium iodide due to the loss of membrane integrity. Cell death began in the epidermal region of the root tip and spread in a dynamic manner to meristematic sections. In parallel, gene expression changes specific to the presence of singlet oxygen were observed. The accumulation of other reactive oxygen species, namely hydrogen, peroxide, nitric oxide, and superoxide, did not correlate with cell death. In addition, both the singlet oxygen scavenger His and the lipoxygenase inhibitor salicylhydroxamic acid specifically inhibited singlet oxygen accumulation and cell death. These results suggest a light-independent, type-I source of singlet oxygen production. Serpin-protease interactions were used as a model to assess the possibility of vacuolar-type cell death. Osmotic stress induced the accumulation of complexes between the cytoplasmic serpin AtSERPIN1 and its cognate vacuolar proteases, indicating that vacuolar integrity was compromised. These findings imply that singlet oxygen plays an essential role in conveying the root response to osmotic stress.
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Affiliation(s)
- Tomer Chen
- Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Robert Fluhr
- Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
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Cui G, Sun F, Gao X, Xie K, Zhang C, Liu S, Xi Y. Proteomic analysis of melatonin-mediated osmotic tolerance by improving energy metabolism and autophagy in wheat (Triticum aestivum L.). Planta 2018; 248:69-87. [PMID: 29564630 DOI: 10.1007/s00425-018-2881-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 03/17/2018] [Indexed: 05/03/2023]
Abstract
Melatonin-mediated osmotic tolerance was attributed to increased antioxidant capacity, energy metabolism, osmoregulation and autophagy in wheat (Triticum aestivum L.). Melatonin is known to play multiple roles in plant abiotic stress tolerance. However, its role in wheat has been rarely investigated. In this study, 25% polyethylene glycol 6000 (PEG 6000) was used to simulate osmotic stress, and wheat seeds and seedlings were treated with different concentrations of melatonin under PEG stress. Isobaric tag for relative and absolute quantification (iTRAQ)-based proteomic techniques were used to identify the differentially accumulated proteins from melatonin-treated and non-treated seedlings. Seeding priming with melatonin significantly increased the germination rate, coleoptile length, and primary root number of wheat under PEG stress, as well as the fresh weight, dry weight, and water content of wheat seedlings. Under PEG stress, melatonin significantly improved reactive oxygen species homeostasis, as revealed by lower H2O2 and O 2· content; and the expression of antioxidant enzymes at the transcription and translation levels was increased. Melatonin maintained seedling growth by improving photosynthetic rates and instantaneous and intrinsic water use efficiencies, as well as carbon fixation and starch synthesis at the protein level. Melatonin treatment significantly affected the expression of glycolytic proteins, including fructose-1,6-bisphosphate aldolase, hexokinase, glyceraldehyde-3-phosphate dehydrogenase, and enolase, and remarkably increased the expression of the nicotinamide adenine dinucleotide transporter and nicotinamide adenine dinucleotide binding protein, thereby indirectly modulating electron transport in the respiratory chain. This indicated that melatonin improved energy production in PEG-stressed seedlings. Further, melatonin played a regulatory role in autophagy, protease expression, and ubiquitin-mediated protein degradation by significantly upregulating rab-related protein, fused signal recognition particle receptor, aspartyl protease, serine protease, ubiquitin-fold modifier 1, and ubiquitin at the mRNA or protein level. These findings suggested that melatonin might activate a metabolic cascade related to autophagy under PEG stress in wheat seedlings.
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Affiliation(s)
- Guibin Cui
- College of Agronomy, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Wheat Biology and Genetic Improvement on Northwestern China, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Fengli Sun
- College of Agronomy, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Wheat Biology and Genetic Improvement on Northwestern China, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xinmei Gao
- College of Agronomy, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Wheat Biology and Genetic Improvement on Northwestern China, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Kunliang Xie
- College of Agronomy, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Wheat Biology and Genetic Improvement on Northwestern China, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Chao Zhang
- College of Agronomy, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Wheat Biology and Genetic Improvement on Northwestern China, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Shudong Liu
- College of Agronomy, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Wheat Biology and Genetic Improvement on Northwestern China, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yajun Xi
- College of Agronomy, State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Wheat Biology and Genetic Improvement on Northwestern China, Ministry of Agriculture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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46
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Wang L, Waters MT, Smith SM. Karrikin-KAI2 signalling provides Arabidopsis seeds with tolerance to abiotic stress and inhibits germination under conditions unfavourable to seedling establishment. New Phytol 2018; 219:605-618. [PMID: 29726620 DOI: 10.1111/nph.15192] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 03/27/2018] [Indexed: 05/06/2023]
Abstract
The control of seed germination in response to environmental conditions is important for plant success. We investigated the role of the karrikin receptor KARRIKIN INSENSITIVE2 (KAI2) in the response of Arabidopsis seeds to osmotic stress, salinity and high temperature. Germination of the kai2 mutant was examined in response to NaCl, mannitol and elevated temperature. The effect of karrikin on germination of wild-type seeds, hypocotyl elongation and the expression of karrikin-responsive genes was also examined in response to such stresses. The kai2 seeds germinated less readily than wild-type seeds and germination was more sensitive to inhibition by abiotic stress. Karrikin-induced KAI2 signalling stimulated germination of wild-type seeds under favourable conditions, but, surprisingly, inhibited germination in the presence of osmolytes or at elevated temperature. By contrast, GA stimulated germination of wild-type seeds and mutants under all conditions. Karrikin induced expression of DLK2 and KUF1 genes and inhibited hypocotyl elongation independently of osmotic stress. Under mild osmotic stress, karrikin enhanced expression of DREB2A, WRKY33 and ERF5 genes, but not ABA signalling genes. Thus, the karrikin-KAI2 signalling system can protect against abiotic stress, first by providing stress tolerance, and second by inhibiting germination under conditions unfavourable to seedling establishment.
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Affiliation(s)
- Lu Wang
- School of Natural Sciences, University of Tasmania, Tasmania, 7001, Australia
| | - Mark T Waters
- School of Molecular Sciences and Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, Perth, 6009, Australia
| | - Steven M Smith
- School of Natural Sciences, University of Tasmania, Tasmania, 7001, Australia
- Institute of Genetics and Developmental Biology, Chinese Academy of sciences, Beijing, 100101, China
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Jain P, Bhatla SC. Tyrosine nitration of cytosolic peroxidase is probably triggered as a long distance signaling response in sunflower seedling cotyledons subjected to salt stress. PLoS One 2018; 13:e0197132. [PMID: 29768452 PMCID: PMC5955538 DOI: 10.1371/journal.pone.0197132] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 04/26/2018] [Indexed: 11/18/2022] Open
Abstract
Present work focuses on tissue and concentration-dependent effect of nitric oxide (NO) on the modulation of cytosolic peroxidase (POD; EC 1.11.1.7) activity in 2-day old etiolated sunflower (Helianthus annuus L.) seedlings. Exogenously supplied NO (in the form of sodium nitroprusside [SNP] or diethylenetriamine NONOate [DETA]; 125 to 500 μM) results in noteworthy enhancement in seedling growth in a concentration dependent manner irrespective of salt-stress and differentially affects POD activity in 2-day old seedling cotyledons. Elevated NO availability leads to an increase in the specific activity of POD in a concentration-dependent manner within 48 hrs as a rapid signaling response. Purification of POD protein using immunoprecipitation technique has shown that cotyledons derived from salt stressed seedlings exhibit a higher extent of tyrosine nitration of POD as compared to the control seedlings. Out of the four tyrosine residues found in the amino acid sequence of POD, the one at position 100 has been predicted to undergo nitration. Thus, a probable NO-POD crosstalk is evident in sunflower seedling cotyledons accompanying salt stress.
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Affiliation(s)
- Prachi Jain
- Laboratory of Plant Physiology and Biochemistry, Department of Botany, University of Delhi, Delhi, India
| | - Satish C. Bhatla
- Laboratory of Plant Physiology and Biochemistry, Department of Botany, University of Delhi, Delhi, India
- * E-mail:
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48
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Pál M, Majláth I, Németh E, Hamow KÁ, Szalai G, Rudnóy S, Balassa G, Janda T. The effects of putrescine are partly overlapping with osmotic stress processes in wheat. Plant Sci 2018; 268:67-76. [PMID: 29362086 DOI: 10.1016/j.plantsci.2017.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/24/2017] [Accepted: 12/22/2017] [Indexed: 06/07/2023]
Abstract
Polyamine metabolism is in relation with several metabolic pathways and linked with plant hormones or signalling molecules; in addition polyamines may modulate the up- or down-regulation of gene expression. However the precise mechanism by which polyamines act at the transcription level is still unclear. In the present study the modifying effect of putrescine pre-treatment has been investigated using the microarray transcriptome profile analysis under the conditions where exogenous putrescine alleviated osmotic stress in wheat plants. Pre-treatment with putrescine induced the unique expression of various general stress-related genes. Although there were obvious differences between the effects of putrescine and polyethylene glycol treatments, there was also a remarkable overlap between the effects of putrescine and osmotic stress responses in wheat plants, suggesting that putrescine has already induced acclimation processes under control conditions. The fatty acid composition in certain lipid fractions and the antioxidant enzyme activities have also been specifically changed under osmotic stress conditions or after treatment with putrescine.
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Affiliation(s)
- Magda Pál
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, 2462, Martonvásár, POB 19, Hungary.
| | - Imre Majláth
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, 2462, Martonvásár, POB 19, Hungary
| | - Edit Németh
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, 2462, Martonvásár, POB 19, Hungary
| | - Kamirán Áron Hamow
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, 2462, Martonvásár, POB 19, Hungary
| | - Gabriella Szalai
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, 2462, Martonvásár, POB 19, Hungary
| | - Szabolcs Rudnóy
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology Eötvös Loránd University (ELTE), Pázmány Peter sétány 1/C, 1117, Budapest, Hungary
| | - György Balassa
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology Eötvös Loránd University (ELTE), Pázmány Peter sétány 1/C, 1117, Budapest, Hungary
| | - Tibor Janda
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, 2462, Martonvásár, POB 19, Hungary
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49
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Zhang Q, van Wijk R, Shahbaz M, Roels W, Schooten BV, Vermeer JEM, Zarza X, Guardia A, Scuffi D, García-Mata C, Laha D, Williams P, Willems LAJ, Ligterink W, Hoffmann-Benning S, Gillaspy G, Schaaf G, Haring MA, Laxalt AM, Munnik T. Arabidopsis Phospholipase C3 is Involved in Lateral Root Initiation and ABA Responses in Seed Germination and Stomatal Closure. Plant Cell Physiol 2018; 59:469-486. [PMID: 29309666 DOI: 10.1093/pcp/pcx194] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 12/01/2017] [Indexed: 05/10/2023]
Abstract
Phospholipase C (PLC) is well known for its role in animal signaling, where it generates the second messengers, inositol 1,4,5-trisphosphate (IP3) and diacylglycerol (DAG), by hydrolyzing the minor phospholipid, phosphatidylinositol 4,5-bisphosphate (PIP2), upon receptor stimulation. In plants, PLC's role is still unclear, especially because the primary targets of both second messengers are lacking, i.e. the ligand-gated Ca2+ channel and protein kinase C, and because PIP2 levels are extremely low. Nonetheless, the Arabidopsis genome encodes nine PLCs. We used a reversed-genetic approach to explore PLC's function in Arabidopsis, and report here that PLC3 is required for proper root development, seed germination and stomatal opening. Two independent knock-down mutants, plc3-2 and plc3-3, were found to exhibit reduced lateral root densities by 10-20%. Mutant seeds germinated more slowly but were less sensitive to ABA to prevent germination. Guard cells of plc3 were also compromised in ABA-dependent stomatal closure. Promoter-β-glucuronidase (GUS) analyses confirmed PLC3 expression in guard cells and germinating seeds, and revealed that the majority is expressed in vascular tissue, most probably phloem companion cells, in roots, leaves and flowers. In vivo 32Pi labeling revealed that ABA stimulated the formation of PIP2 in germinating seeds and guard cell-enriched leaf peels, which was significantly reduced in plc3 mutants. Overexpression of PLC3 had no effect on root system architecture or seed germination, but increased the plant's tolerance to drought. Our results provide genetic evidence for PLC's involvement in plant development and ABA signaling, and confirm earlier observations that overexpression increases drought tolerance. Potential molecular mechanisms for the above observations are discussed.
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Affiliation(s)
- Qianqian Zhang
- Swammerdam Institute for Life Sciences, section Plant Physiology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
- Swammerdam Institute for Life Sciences, section Plant Cell Biology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Ringo van Wijk
- Swammerdam Institute for Life Sciences, section Plant Physiology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
- Swammerdam Institute for Life Sciences, section Plant Cell Biology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Muhammad Shahbaz
- Swammerdam Institute for Life Sciences, section Plant Physiology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Wendy Roels
- Swammerdam Institute for Life Sciences, section Plant Physiology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Bas van Schooten
- Swammerdam Institute for Life Sciences, section Plant Physiology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Joop E M Vermeer
- Swammerdam Institute for Life Sciences, section Plant Physiology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
- Department of Plant and Microbial Biology, University of Zürich, Zürich, Switzerland
| | - Xavier Zarza
- Swammerdam Institute for Life Sciences, section Plant Physiology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
- Swammerdam Institute for Life Sciences, section Plant Cell Biology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Aisha Guardia
- Instituto de Investigaciones Biológicas (IIB-CONICET-UNMdP), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - Denise Scuffi
- Instituto de Investigaciones Biológicas (IIB-CONICET-UNMdP), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - Carlos García-Mata
- Instituto de Investigaciones Biológicas (IIB-CONICET-UNMdP), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - Debabrata Laha
- Center for Plant Molecular Biology, University of Tübingen, Tübingen, Germany
- Institute of Crop Science and Resource Conservation, Department of Plant Nutrition, University of Bonn, Bonn, Germany
| | - Phoebe Williams
- Department of Biochemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Leo A J Willems
- Laboratory of Plant Physiology, Wageningen University & Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Wilco Ligterink
- Laboratory of Plant Physiology, Wageningen University & Research, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Susanne Hoffmann-Benning
- Departement of Biochemistry & Molecular Biology, Michigan State University, East Lansing, MI, USA
| | - Glenda Gillaspy
- Department of Biochemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - Gabriel Schaaf
- Center for Plant Molecular Biology, University of Tübingen, Tübingen, Germany
- Institute of Crop Science and Resource Conservation, Department of Plant Nutrition, University of Bonn, Bonn, Germany
| | - Michel A Haring
- Swammerdam Institute for Life Sciences, section Plant Physiology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Ana M Laxalt
- Instituto de Investigaciones Biológicas (IIB-CONICET-UNMdP), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - Teun Munnik
- Swammerdam Institute for Life Sciences, section Plant Physiology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
- Swammerdam Institute for Life Sciences, section Plant Cell Biology, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
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50
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Gharbi E, Lutts S, Dailly H, Quinet M. Comparison between the impacts of two different modes of salicylic acid application on tomato (Solanum lycopersicum) responses to salinity. Plant Signal Behav 2018; 13:e1469361. [PMID: 29944448 PMCID: PMC6103279 DOI: 10.1080/15592324.2018.1469361] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 04/19/2018] [Indexed: 05/22/2023]
Abstract
Exogenous application of salicylic acid may improve tolerance to salinity. To investigate whether exogenous salicylic acid application had similar protective effects when applied as a priming agent or concomitantly with NaCl, tomato seedlings primed or not with 10 µM salicylic acid were further treated with 125 mM NaCl, 10 µM salicylic acid or combined treatments. Both priming and concomitant application of salicylic acid increased plant growth of salt-stressed plants but their positive impact was not additive. The endogenous salicylic acid concentration increased in the leaves after concomitant application but not in response to priming, suggesting that salicylic acid accumulated during priming was metabolized subsequently. Priming increased Na+ and K+ accumulation in leaves of salt-treated plants while concomitant application had no impact on shoot Na+ and K+ accumulation. Both priming and concomitant salicylic acid decreased osmotic potential values in salt-treated plants. Carbon isotope discrimination showed that combination of both salicylic acid application methods were required to maintain a good water use efficiency in salt-treated plants. Our work demonstrated that both procedures of salicylic acid application have positive impact on salt resistance but that the underlying properties sustaining these adaptations differ according to application methods.
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Affiliation(s)
- E. Gharbi
- Groupe de Recherche en Physiologie végétale (GRPV), Earth and Life Institute – Agronomy (ELI-A) – Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - S. Lutts
- Groupe de Recherche en Physiologie végétale (GRPV), Earth and Life Institute – Agronomy (ELI-A) – Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - H. Dailly
- Groupe de Recherche en Physiologie végétale (GRPV), Earth and Life Institute – Agronomy (ELI-A) – Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - M. Quinet
- Groupe de Recherche en Physiologie végétale (GRPV), Earth and Life Institute – Agronomy (ELI-A) – Université catholique de Louvain, Louvain-la-Neuve, Belgium
- CONTACT M. Quinet, Groupe de Recherche en Physiologie végétale (GRPV), Earth and Life Institute – Agronomy (ELI-A) – Université catholique de Louvain, 5 (Bte 7.07.13) Place Croix du Sud, 1348 Louvain-la-Neuve, Belgium
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