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Zheng P, Ge J, Ji J, Zhong J, Chen H, Luo D, Li W, Bi B, Ma Y, Tong W, Han L, Ma S, Zhang Y, Wu J, Zhao Y, Pan R, Fan P, Lu M, Du H. Metabolic engineering and mechanical investigation of enhanced plant autoluminescence. PLANT BIOTECHNOLOGY JOURNAL 2023. [PMID: 37155328 PMCID: PMC10363767 DOI: 10.1111/pbi.14068] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/18/2023] [Accepted: 04/24/2023] [Indexed: 05/10/2023]
Abstract
The fungal bioluminescence pathway (FBP) was identified from glowing fungi, which releases self-sustained visible green luminescence. However, weak bioluminescence limits the potential application of the bioluminescence system. Here, we screened and characterized a C3'H1 (4-coumaroyl shikimate/quinate 3'-hydroxylase) gene from Brassica napus, which efficiently converts p-coumaroyl shikimate to caffeic acid and hispidin. Simultaneous expression of BnC3'H1 and NPGA (null-pigment mutant in A. nidulans) produces more caffeic acid and hispidin as the natural precursor of luciferin and significantly intensifies the original fungal bioluminescence pathway (oFBP). Thus, we successfully created enhanced FBP (eFBP) plants emitting 3 × 1011 photons/min/cm2 , sufficient to illuminate its surroundings and visualize words clearly in the dark. The glowing plants provide sustainable and bio-renewable illumination for the naked eyes, and manifest distinct responses to diverse environmental conditions via caffeic acid biosynthesis pathway. Importantly, we revealed that the biosynthesis of caffeic acid and hispidin in eFBP plants derived from the sugar pathway, and the inhibitors of the energy production system significantly reduced the luminescence signal rapidly from eFBP plants, suggesting that the FBP system coupled with the luciferin metabolic flux functions in an energy-driven way. These findings lay the groundwork for genetically creating stronger eFBP plants and developing more powerful biological tools with the FBP system.
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Affiliation(s)
- Peng Zheng
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
| | - Jieyu Ge
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Jiayi Ji
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Jingling Zhong
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- Hainan Institute of Zhejiang University, Sanya, China
| | - Hongyu Chen
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Daren Luo
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Wei Li
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
| | - Bo Bi
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
| | - Yongjun Ma
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Wanghui Tong
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Leiqin Han
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Siqi Ma
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Yuqi Zhang
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Westlake Laboratory of Life Sciences and Biomedicine, Institute of Biology, Westlake Institute for Advanced Study, Hangzhou, China
| | - Jianping Wu
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Westlake Laboratory of Life Sciences and Biomedicine, Institute of Biology, Westlake Institute for Advanced Study, Hangzhou, China
| | - Yanqiu Zhao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Ronghui Pan
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
| | - Pengxiang Fan
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Mengzhu Lu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Hao Du
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
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Gureev AP, Sitnikov VV, Pogorelov DI, Vitkalova IY, Igamberdiev AU, Popov VN. The effect of pesticides on the NADH-supported mitochondrial respiration of permeabilized potato mitochondria. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 183:105056. [PMID: 35430060 DOI: 10.1016/j.pestbp.2022.105056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 01/29/2022] [Accepted: 02/14/2022] [Indexed: 06/14/2023]
Abstract
Pesticides can seriously affect the respiratory chain of the mitochondria of many crops, reducing the intensity of plant growth and its yield. Studying the effect of pesticides on the bioenergetic parameters of intact plant mitochondria is a promising approach for assessing their toxicity. In this study, we investigated the effect of some pesticides on isolated potato mitochondria, which used exogenous NADH as a substrate for respiration. We showed that succinate is the most preferred substrate for phosphorylating respiration of intact potato tubers mitochondria. Potato mitochondria poorly oxidize exogenous NADH, despite of the presence of external NADH dehydrogenases. Permeabilization of the mitochondrial membrane with alamethicin increased the availability of exogenous NADH to complex I. However, the pathway of electrons through complex I to complex IV makes intact potato mitochondria susceptible to a number of pesticides such as difenoconazole, fenazaquin, pyridaben and tolfenpyrad, which strongly inhibit the rate of mitochondrial respiration. However, these pesticides only slightly inhibited the rate of oxygen consumption during succinate-supported respiration. Dithianon, the inhibitor of Complex II, is the only pesticide which significantly increased the respiratory rate of NADH-supported respiration of permeabilized mitochondria of potato. Thus, it can be assumed that the alternative NADH dehydrogenases for electron flow represent a factor responsible for plant resistance to xenobiotics, such as mitochondria-targeted pesticides.
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Affiliation(s)
- Artem P Gureev
- Laboratory of Metagenomics and Food Biotechnology, Voronezh State University of Engineering Technologies, Voronezh, 394036, Russia; Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh 394018, Russia
| | - Vadim V Sitnikov
- Laboratory of Metagenomics and Food Biotechnology, Voronezh State University of Engineering Technologies, Voronezh, 394036, Russia; Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh 394018, Russia
| | - Daniil I Pogorelov
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh 394018, Russia
| | - Inna Yu Vitkalova
- Laboratory of Metagenomics and Food Biotechnology, Voronezh State University of Engineering Technologies, Voronezh, 394036, Russia; Department of Biochemistry and Cell Physiology, Voronezh State University, Voronezh 394018, Russia.
| | - Abir U Igamberdiev
- Department of Biology, Memorial University of Newfoundland, St. John's, NL A1B 3X9, Canada
| | - Vasily N Popov
- Laboratory of Metagenomics and Food Biotechnology, Voronezh State University of Engineering Technologies, Voronezh, 394036, Russia; Department of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh 394018, Russia
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Krupka M, Michalczyk DJ, Žaltauskaitė J, Sujetovienė G, Głowacka K, Grajek H, Wierzbicka M, Piotrowicz-Cieślak AI. Physiological and Biochemical Parameters of Common Duckweed Lemna minor after the Exposure to Tetracycline and the Recovery from This Stress. Molecules 2021; 26:molecules26226765. [PMID: 34833856 PMCID: PMC8625026 DOI: 10.3390/molecules26226765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/04/2021] [Accepted: 11/07/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, the ability of Lemna minor L. to recover to normal growth, after being degraded in a tetracycline-containing medium, was extensively investigated. The plants were exposed to tetracycline (TC) at concentrations of 1, 2.5, and 10 mM. Subsequently, their physiological status was analysed against the following criteria: rate of plant growth; free radical accumulation; antioxidant enzyme activity; chlorophyll content; HSP70 protein content; cell membrane permeability, and mitochondrial activity. The study showed that duckweed can considerably recover from the damage caused by antibiotics, within a week of cessation of stress. Of the plant properties analysed, mitochondrial activity was the most sensitive to antibiotic-induced disturbances. After transferring the plants to a tetracycline-free medium, all plant parameters improved significantly, except for the mitochondrial activity in the plants grown on the medium containing the highest dose of tetracycline. In the plants treated with this antibiotic at the concentration of 10 mM, the proportion of dead mitochondria increased and was as high as 93% after one week from the beginning of the recovery phase, even after the transfer to the tetracycline-free medium.
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Affiliation(s)
- Magdalena Krupka
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-718 Olsztyn, Poland; (M.K.); (D.J.M.); (K.G.); (M.W.)
| | - Dariusz J. Michalczyk
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-718 Olsztyn, Poland; (M.K.); (D.J.M.); (K.G.); (M.W.)
| | - Jūratė Žaltauskaitė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, 46265 Kaunas, Lithuania; (J.Ž.); (G.S.)
| | - Gintarė Sujetovienė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, 46265 Kaunas, Lithuania; (J.Ž.); (G.S.)
| | - Katarzyna Głowacka
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-718 Olsztyn, Poland; (M.K.); (D.J.M.); (K.G.); (M.W.)
| | - Hanna Grajek
- Department of Physics and Biophysics, Faculty of Food Science, University of Warmia and Mazury in Olsztyn, Oczapowskiego 4, 10-719 Olsztyn, Poland;
| | - Marta Wierzbicka
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-718 Olsztyn, Poland; (M.K.); (D.J.M.); (K.G.); (M.W.)
| | - Agnieszka I. Piotrowicz-Cieślak
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-718 Olsztyn, Poland; (M.K.); (D.J.M.); (K.G.); (M.W.)
- Correspondence:
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Rocha DC, da Silva Rocha C, Tavares DS, de Morais Calado SL, Gomes MP. Veterinary antibiotics and plant physiology: An overview. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 767:144902. [PMID: 33636760 DOI: 10.1016/j.scitotenv.2020.144902] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/23/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
Antibiotics are considered one of the greatest advances of medicine and, in addition to their use in treating a wide spectrum of illnesses, they have been widely employed to promote animal growth. As many of those pharmaceuticals are only partially absorbed by the digestive system, a considerable fraction is excreted in its original active form or only partially metabolized. Therefore, the use of animal excrement in agriculture represents one of the principal routes of insertion of antibiotics into the environment. Within that context, plants, principally those of agricultural interest, will be exposed to those compounds when present in the soil or when irrigated with contaminated water. Although not yet fully understood, there are reports of phytotoxic effects of antibiotics that can diminish agricultural production. This review is designed to provide a general and integrative overview of physiological alterations observed in plants caused by environmental exposures to veterinary-use antibiotics. This text principally focuses on the processes involved in antibody absorption and accumulation, and their effects on the primary (photosynthesis, respiration, nitrogen assimilation) and oxidative metabolisms of plants. We also bring attention to germinative and plant establishment processes under conditions of antibiotic contamination. The different effects of different antibiotics on plant physiology are listed here to provide a better understanding of their phytotoxicities.
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Affiliation(s)
- Daiane Cristina Rocha
- Laboratório de Fisiologia de Plantas sob Estresse, Departamento de Botânica, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco H. dos Santos, 100, Centro Politécnico Jardim das Américas, C.P. 19031, 81531-980 Curitiba, Paraná, Brazil
| | - Camila da Silva Rocha
- Laboratório de Fisiologia de Plantas sob Estresse, Departamento de Botânica, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco H. dos Santos, 100, Centro Politécnico Jardim das Américas, C.P. 19031, 81531-980 Curitiba, Paraná, Brazil
| | - Davi Santos Tavares
- Laboratório de Fisiologia de Plantas sob Estresse, Departamento de Botânica, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco H. dos Santos, 100, Centro Politécnico Jardim das Américas, C.P. 19031, 81531-980 Curitiba, Paraná, Brazil; Departamento de Ciência do Solo, Universidade Federal de Lavras, Campus UFLA, C.P. 3037, 37200-000 Lavras, Minas Gerais, Brazil
| | - Sabrina Loise de Morais Calado
- Laboratório de Toxicologia Ambiental, Departamento de Farmacologia, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco H. dos Santos, 100, Centro Politécnico Jardim das Américas, C.P. 19031, 81531-980 Curitiba, Paraná, Brazil
| | - Marcelo Pedrosa Gomes
- Laboratório de Fisiologia de Plantas sob Estresse, Departamento de Botânica, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco H. dos Santos, 100, Centro Politécnico Jardim das Américas, C.P. 19031, 81531-980 Curitiba, Paraná, Brazil.
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Sweetman C, Miller TK, Booth NJ, Shavrukov Y, Jenkins CL, Soole KL, Day DA. Identification of Alternative Mitochondrial Electron Transport Pathway Components in Chickpea Indicates a Differential Response to Salinity Stress between Cultivars. Int J Mol Sci 2020; 21:E3844. [PMID: 32481694 PMCID: PMC7312301 DOI: 10.3390/ijms21113844] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 11/16/2022] Open
Abstract
All plants contain an alternative electron transport pathway (AP) in their mitochondria, consisting of the alternative oxidase (AOX) and type 2 NAD(P)H dehydrogenase (ND) families, that are thought to play a role in controlling oxidative stress responses at the cellular level. These alternative electron transport components have been extensively studied in plants like Arabidopsis and stress inducible isoforms identified, but we know very little about them in the important crop plant chickpea. Here we identify AP components in chickpea (Cicer arietinum) and explore their response to stress at the transcript level. Based on sequence similarity with the functionally characterized proteins of Arabidopsis thaliana, five putative internal (matrix)-facing NAD(P)H dehydrogenases (CaNDA1-4 and CaNDC1) and four putative external (inter-membrane space)-facing NAD(P)H dehydrogenases (CaNDB1-4) were identified in chickpea. The corresponding activities were demonstrated for the first time in purified mitochondria of chickpea leaves and roots. Oxidation of matrix NADH generated from malate or glycine in the presence of the Complex I inhibitor rotenone was high compared to other plant species, as was oxidation of exogenous NAD(P)H. In leaf mitochondria, external NADH oxidation was stimulated by exogenous calcium and external NADPH oxidation was essentially calcium dependent. However, in roots these activities were low and largely calcium independent. A salinity experiment with six chickpea cultivars was used to identify salt-responsive alternative oxidase and NAD(P)H dehydrogenase gene transcripts in leaves from a three-point time series. An analysis of the Na:K ratio and Na content separated these cultivars into high and low Na accumulators. In the high Na accumulators, there was a significant up-regulation of CaAOX1, CaNDB2, CaNDB4, CaNDA3 and CaNDC1 in leaf tissue under long term stress, suggesting the formation of a stress-modified form of the mitochondrial electron transport chain (mETC) in leaves of these cultivars. In particular, stress-induced expression of the CaNDB2 gene showed a striking positive correlation with that of CaAOX1 across all genotypes and time points. The coordinated salinity-induced up-regulation of CaAOX1 and CaNDB2 suggests that the mitochondrial alternative pathway of respiration is an important facet of the stress response in chickpea, in high Na accumulators in particular, despite high capacities for both of these activities in leaf mitochondria of non-stressed chickpeas.
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Affiliation(s)
- Crystal Sweetman
- College of Science & Engineering, Flinders University, GPO Box 5100, Adelaide SA 5001, Australia; (T.K.M.); (N.J.B.); (Y.S.); (C.L.D.J.); (K.L.S.); (D.A.D.)
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Czobor Á, Hajdinák P, Németh B, Piros B, Németh Á, Szarka A. Comparison of the response of alternative oxidase and uncoupling proteins to bacterial elicitor induced oxidative burst. PLoS One 2019; 14:e0210592. [PMID: 30629714 PMCID: PMC6328269 DOI: 10.1371/journal.pone.0210592] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 12/25/2018] [Indexed: 12/03/2022] Open
Abstract
Plant UCPs are proved to take part in the fine-tuning of mitochondrial ROS generation. It has emerged that mitochondrion can be an important early source of intracellular ROS during plant-pathogen interaction thus plant UCPs must also play key role in this redox fine-tuning during the early phase of plant-pathogen interaction. On the contrary of this well-established assumption, the expression of plant UCPs and their activity has not been investigated in elicitor induced oxidative burst. Thus, the level of plant UCPs both at RNA and protein level and their activity was investigated and compared to AOX as a reference in Arabidopsis thaliana cells due to bacterial harpin treatments. Similar to the expression and activity of AOX, the transcript level of UCP4, UCP5 and the UCP activity increased due to harpin treatment and the consequential oxidative burst. The expression of UCP4 and UCP5 elevated 15-18-fold after 1 h of treatment, then the activity of UCP reached its maximal value at 4h of treatment. The quite rapid activation of UCP due to harpin treatment gives another possibility to fine tune the redox balance of plant cell, furthermore explains the earlier observed rapid decrease of mitochondrial membrane potential and consequent decrease of ATP synthesis after harpin treatment.
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Affiliation(s)
- Ádám Czobor
- Department of Applied Biotechnology and Food Science, Laboratory of Biochemistry and Molecular Biology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Péter Hajdinák
- Department of Applied Biotechnology and Food Science, Laboratory of Biochemistry and Molecular Biology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Bence Németh
- Department of Applied Biotechnology and Food Science, Laboratory of Biochemistry and Molecular Biology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Borbála Piros
- Department of Applied Biotechnology and Food Science, Laboratory of Biochemistry and Molecular Biology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Áron Németh
- Department of Applied Biotechnology and Food Science, Fermentation Pilot Plant Laboratory, Budapest University of Technology and Economics, Budapest, Hungary
| | - András Szarka
- Department of Applied Biotechnology and Food Science, Laboratory of Biochemistry and Molecular Biology, Budapest University of Technology and Economics, Budapest, Hungary
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Lager I, Andréasson O, Dunbar T, Andreasson E, Escobar MA, Rasmusson AG. Changes in external pH rapidly alter plant gene expression and modulate auxin and elicitor responses. PLANT, CELL & ENVIRONMENT 2010; 33:1513-28. [PMID: 20444216 PMCID: PMC2920358 DOI: 10.1111/j.1365-3040.2010.02161.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
pH is a highly variable environmental factor for the root, and plant cells can modify apoplastic pH for nutrient acquisition and in response to extracellular signals. Nevertheless, surprisingly few effects of external pH on plant gene expression have been reported. We have used microarrays to investigate whether external pH affects global gene expression. In Arabidopsis thaliana roots, 881 genes displayed at least twofold changes in transcript abundance 8 h after shifting medium pH from 6.0 to 4.5, identifying pH as a major affector of global gene expression. Several genes responded within 20 min, and gene responses were also observed in leaves of seedling cultures. The pH 4.5 treatment was not associated with abiotic stress, as evaluated from growth and transcriptional response. However, the observed patterns of global gene expression indicated redundancies and interactions between the responses to pH, auxin and pathogen elicitors. In addition, major shifts in gene expression were associated with cell wall modifications and Ca(2+) signalling. Correspondingly, a marked overrepresentation of Ca(2+)/calmodulin-associated motifs was observed in the promoters of pH-responsive genes. This strongly suggests that plant pH recognition involves intracellular Ca(2+). Overall, the results emphasize the previously underappreciated role of pH in plant responses to the environment.
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Affiliation(s)
- Ida Lager
- Department of Biology, Lund University, SE-22362, Lund, Sweden (I.L., O.A., E.A., A.G.R.); Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096, USA (T.B., M.A.E.)
| | - Ola Andréasson
- Department of Biology, Lund University, SE-22362, Lund, Sweden (I.L., O.A., E.A., A.G.R.); Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096, USA (T.B., M.A.E.)
| | - Tiffany Dunbar
- Department of Biology, Lund University, SE-22362, Lund, Sweden (I.L., O.A., E.A., A.G.R.); Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096, USA (T.B., M.A.E.)
| | - Erik Andreasson
- Department of Biology, Lund University, SE-22362, Lund, Sweden (I.L., O.A., E.A., A.G.R.); Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096, USA (T.B., M.A.E.)
| | - Matthew A. Escobar
- Department of Biology, Lund University, SE-22362, Lund, Sweden (I.L., O.A., E.A., A.G.R.); Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096, USA (T.B., M.A.E.)
| | - Allan G. Rasmusson
- Department of Biology, Lund University, SE-22362, Lund, Sweden (I.L., O.A., E.A., A.G.R.); Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096, USA (T.B., M.A.E.)
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Matos AR, Mendes AT, Scotti-Campos P, Arrabaça JD. Study of the effects of salicylic acid on soybean mitochondrial lipids and respiratory properties using the alternative oxidase as a stress-reporter protein. PHYSIOLOGIA PLANTARUM 2009; 137:485-97. [PMID: 19508334 DOI: 10.1111/j.1399-3054.2009.01250.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Biotic and abiotic stresses can lead to modifications in the lipid composition of cell membranes. Although mitochondria appear to be implicated in stress responses, little is known about the membrane lipid changes that occur in these organelles in plants. Besides cytochrome c oxidase, plant mitochondria have an alternative oxidase (AOX) that accepts electrons directly from ubiquinol, dissipating energy as heat. AOX upregulation occurs under a variety of stresses and its induction by salicylic acid (SA) has been observed in different plant species. AOX was also suggested to be used as a functional marker for cell reprogramming under stress. In the present study, we have used etiolated soybean (Glycine max (L.) Merr. cv Cresir) seedlings to study the effects of SA treatment on the lipid composition and the respiratory properties of hypocotyl mitochondria. AOX expression was studied in detail, as a reporter protein, to evaluate whether modifications in mitochondrial energy metabolism were occurring. In mitochondria extracted from SA-treated seedlings, AOX capacity and protein contents increased. Both AOX1 and AOX2b transcripts accumulated in response to SA, but with different kinetics. A reduction in external NADH oxidation capacity was observed, whereas succinate respiration remained unchanged. The phospholipid composition of mitochondria remained similar in control and SA-treated plants, but a reduction in the relative amount of linolenic acid was observed in phosphatidylcholine, phosphatidylethanolamine and cardiolipin. The possible causes of the fatty acid modifications observed, and the implications for mitochondrial metabolism are discussed.
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Affiliation(s)
- Ana Rita Matos
- Centro de Engenharia Biológica, Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
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Liu YJ, Nunes-Nesi A, Wallström SV, Lager I, Michalecka AM, Norberg FEB, Widell S, Fredlund KM, Fernie AR, Rasmusson AG. A redox-mediated modulation of stem bolting in transgenic Nicotiana sylvestris differentially expressing the external mitochondrial NADPH dehydrogenase. PLANT PHYSIOLOGY 2009; 150:1248-59. [PMID: 19429607 PMCID: PMC2705030 DOI: 10.1104/pp.109.136242] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2009] [Accepted: 05/04/2009] [Indexed: 05/08/2023]
Abstract
Cytosolic NADPH can be directly oxidized by a calcium-dependent NADPH dehydrogenase, NDB1, present in the plant mitochondrial electron transport chain. However, little is known regarding the impact of modified cytosolic NADPH reduction levels on growth and metabolism. Nicotiana sylvestris plants overexpressing potato (Solanum tuberosum) NDB1 displayed early bolting, whereas sense suppression of the same gene led to delayed bolting, with consequential changes in flowering time. The phenotype was dependent on light irradiance but not linked to any change in biomass accumulation. Whereas the leaf NADPH/NADP(+) ratio was unaffected, the stem NADPH/NADP(+) ratio was altered following the genetic modification and strongly correlated with the bolting phenotype. Metabolic profiling of the stem showed that the NADP(H) change affected relatively few, albeit central, metabolites, including 2-oxoglutarate, glutamate, ascorbate, sugars, and hexose-phosphates. Consistent with the phenotype, the modified NDB1 level also affected the expression of putative floral meristem identity genes of the SQUAMOSA and LEAFY types. Further evidence for involvement of the NADPH redox in stem development was seen in the distinct decrease in the stem apex NADPH/NADP(+) ratio during bolting. Additionally, the potato NDB1 protein was specifically detected in mitochondria, and a survey of its abundance in major organs revealed that the highest levels are found in green stems. These results thus strongly suggest that NDB1 in the mitochondrial electron transport chain can, by modifying cell redox levels, specifically affect developmental processes.
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Affiliation(s)
- Yun-Jun Liu
- Department of Cell and Organism Biology, Lund University, SE-22362 Lund, Sweden
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Type II NAD(P)H dehydrogenases are targeted to mitochondria and chloroplasts or peroxisomes inArabidopsis thaliana. FEBS Lett 2008; 582:3073-9. [DOI: 10.1016/j.febslet.2008.07.061] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2008] [Revised: 07/30/2008] [Accepted: 07/31/2008] [Indexed: 11/19/2022]
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Kotiaho M, Aittamaa M, Andersson M, Mikkola R, Valkonen J, Salkinoja-Salonen M. Antimycin A-producing nonphytopathogenic Streptomyces turgidiscabies from potato. J Appl Microbiol 2008; 104:1332-40. [DOI: 10.1111/j.1365-2672.2007.03661.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Mizuno N, Sugie A, Kobayashi F, Takumi S. Mitochondrial alternative pathway is associated with development of freezing tolerance in common wheat. JOURNAL OF PLANT PHYSIOLOGY 2008; 165:462-7. [PMID: 17766003 DOI: 10.1016/j.jplph.2007.04.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2007] [Revised: 04/29/2007] [Accepted: 04/30/2007] [Indexed: 05/17/2023]
Abstract
Cold acclimation is an adaptive process for acquiring cold/freezing tolerance in wheat. To clarify the cultivar difference of freezing tolerance, we compared mitochondrial respiration activity and the expression profile of alternative oxidase (AOX) genes under low-temperature conditions using two common wheat cultivars differing in freezing tolerance. During cold acclimation, the respiration capacity of the alternative pathway significantly increased in a freezing-tolerant cultivar compared with a freezing-sensitive cultivar. More abundant accumulation of the AOX and uncoupling protein gene transcripts was also observed under the low-temperature conditions in the tolerant cultivar than in the sensitive cultivar. These results suggest that the mitochondrial alternative pathway might be partly associated with the cold acclimation and freezing tolerance in wheat.
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Affiliation(s)
- Nobuyuki Mizuno
- Laboratory of Plant Genetics, Graduate School of Agricultural Science, Kobe University, Nada-ku, Kobe, Japan
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13
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Castro-Guerrero NA, Rodríguez-Zavala JS, Marín-Hernández A, Rodríguez-Enríquez S, Moreno-Sánchez R. Enhanced alternative oxidase and antioxidant enzymes under Cd2+ stress in Euglena. J Bioenerg Biomembr 2007; 40:227-35. [PMID: 17899336 DOI: 10.1007/s10863-007-9098-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2007] [Accepted: 08/22/2007] [Indexed: 11/26/2022]
Abstract
To identify some of the mechanisms involved in the high resistance to Cd(2+) in the protist Euglena gracilis, we studied the effect of Cd(2+) exposure on its energy and oxidative stress metabolism as well as on essential heavy metals homeostasis. In E. gracilis heterotrophic cells, as in other organisms, CdCl(2) (50 microM) induced diminution in cell growth, severe oxidative stress accompanied by increased antioxidant enzyme activity and strong perturbation of the heavy metal homeostasis. However, Cd(2+) exposure did not substantially modify the cellular respiratory rate or ATP intracellular level, although the activities of respiratory complexes III and IV were strongly decreased. In contrast, an enhanced capacity of the alternative oxidase (AOX) in both intact cells and isolated mitochondria was determined under Cd(2+) stress; in fact, AOX activity accounted for 69-91% of total respiration. Western blotting also revealed an increased AOX content in mitochondria from Cd(2+)-exposed cells. Moreover, AOX was more resistant to Cd(2+) inhibition than cytochrome c oxidase in mitochondria from control and Cd(2+)-exposed cells. Therefore, an enhanced AOX seems to be a relevant component of the resistance mechanism developed by E. gracilis against Cd(2+)-stress, in addition to the usual increased antioxidant enzyme activity, that enabled cells to maintain a relatively unaltered the energy status.
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14
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Tessitori M, Maria G, Capasso C, Catara G, Rizza S, De Luca V, Catara A, Capasso A, Carginale V. Differential display analysis of gene expression in Etrog citron leaves infected by Citrus viroid III. ACTA ACUST UNITED AC 2007; 1769:228-35. [PMID: 17475349 DOI: 10.1016/j.bbaexp.2007.03.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2006] [Revised: 03/14/2007] [Accepted: 03/16/2007] [Indexed: 11/30/2022]
Abstract
Citrus are natural hosts of several viroids, which are plant pathogens composed exclusively of a non-protein-coding, small single-stranded circular RNA that is able to replicate autonomously in susceptible hosts. They are responsible for symptoms such as stunting, leaf epinasty, and chlorosis. Citrus viroid III (CVd-III) has been long regarded as a possible dwarfing agent of citrus grafted on trifoliate orange and its hybrids. To investigate molecular mechanisms involved in pathogenesis, the messenger RNA (mRNA) differential display technique was here applied to identify genes whose transcription was significantly altered in leaves of Etrog citron (Citrus medica) infected by CVd-III (variant b). Of eighteen genes identified, thirteen were up-regulated by viroid infection, while five were down-regulated. Except for two genes that encode proteins of unknown function, the remaining genes are mainly involved in plant defence/stress responses, signal transduction, amino acid transport, and cell wall structure. Among the up-regulated genes, it is noteworthy a suppressor of RNA silencing that might be involved in viroid and virus pathogenicity. The functions of these genes are discussed.
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Affiliation(s)
- Matilde Tessitori
- Dipartimento di Scienze e Tecnologie Fitosanitarie, DISTEF, University of Catania, Italy
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15
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Kim YK, Yoo WI, Lee SH, Lee MY. Proteomic analysis of cadmium-induced protein profile alterations from marine alga Nannochloropsis oculata. ECOTOXICOLOGY (LONDON, ENGLAND) 2005; 14:589-96. [PMID: 16215694 DOI: 10.1007/s10646-005-0009-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/21/2004] [Indexed: 05/04/2023]
Abstract
Protein profile alterations following exposure to cadmium were examined in marine alga Nannochloropsis oculata through proteomic analysis. Alterations of the protein expression patterns following 10 muM cadmium treatment were analyzed on 2-dimensional gels. Out of 380 protein spots detected on 2-D gel using Coomassie staining, 11 spots were changed significantly following cadmium treatment. Because of the non-availability of molecular background information on this non-sequenced algal species, cross-species protein identification through ESI-Q-TOF MS/MS was used to identify altered proteins. Two newly induced proteins were identified as malate dehydrogenase orthologue and NADH dehydrogenase orthologue. One suppressed protein was identified to be glyceraldehydes 3-phosphate dehydrogenase A. Protein spot showing a 3-fold increase was identified as mitochondrial NADH: ubiquinone oxidoreductase orthologue. However, we could not find any matches in the database from ESI-Q-TOF MS/MS for the remaining seven proteins, thus only partial peptide sequences of these proteins were found.
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Affiliation(s)
- Y K Kim
- Division of Life Science, Soonchunhyang University, PO Box 97, 336-600, Asan, Chungnam, Korea
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16
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Clifton R, Lister R, Parker KL, Sappl PG, Elhafez D, Millar AH, Day DA, Whelan J. Stress-induced co-expression of alternative respiratory chain components in Arabidopsis thaliana. PLANT MOLECULAR BIOLOGY 2005; 58:193-212. [PMID: 16027974 DOI: 10.1007/sl] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/19/2005] [Accepted: 04/14/2005] [Indexed: 05/27/2023]
Abstract
Plant mitochondria contain non-phosphorylating bypasses of the respiratory chain, catalysed by the alternative oxidase (AOX) and alternative NADH dehydrogenases (NDH), as well as uncoupling (UCP) protein. Each of these components either circumvents or short-circuits proton translocation pathways, and each is encoded by a small gene family in Arabidopsis. Whole genome microarray experiments were performed with suspension cell cultures to examine the effects of various 3 h treatments designed to induce abiotic stress. The expression of over 60 genes encoding components of the classical, phosphorylating respiratory chain and tricarboxylic acid cycle remained largely constant when cells were subjected to a broad range of abiotic stresses, but expression of the alternative components responded differentially to the various treatments. In detailed time-course quantitative PCR analysis, specific members of both AOX and NDH gene families displayed coordinated responses to treatments. In particular, the co-expression of AOX1a and NDB2 observed under a number of treatments suggested co-regulation that may be directed by common sequence elements arranged hierarchically in the upstream promoter regions of these genes. A series of treatment sets were identified, representing the response of specific AOX and NDH genes to mitochondrial inhibition, plastid inhibition and abiotic stresses. These treatment sets emphasise the multiplicity of pathways affecting alternative electron transport components in plants.
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Affiliation(s)
- Rachel Clifton
- Plant Molecular Biology Group, School of Biomedical and Chemical Sciences, The University of Western Australia, Crawley, Western Australia, Australia
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Clifton R, Lister R, Parker KL, Sappl PG, Elhafez D, Millar AH, Day DA, Whelan J. Stress-induced co-expression of alternative respiratory chain components in Arabidopsis thaliana. PLANT MOLECULAR BIOLOGY 2005; 58:193-212. [PMID: 16027974 DOI: 10.1007/s11103-005-5514-7] [Citation(s) in RCA: 219] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2005] [Accepted: 04/14/2005] [Indexed: 05/03/2023]
Abstract
Plant mitochondria contain non-phosphorylating bypasses of the respiratory chain, catalysed by the alternative oxidase (AOX) and alternative NADH dehydrogenases (NDH), as well as uncoupling (UCP) protein. Each of these components either circumvents or short-circuits proton translocation pathways, and each is encoded by a small gene family in Arabidopsis. Whole genome microarray experiments were performed with suspension cell cultures to examine the effects of various 3 h treatments designed to induce abiotic stress. The expression of over 60 genes encoding components of the classical, phosphorylating respiratory chain and tricarboxylic acid cycle remained largely constant when cells were subjected to a broad range of abiotic stresses, but expression of the alternative components responded differentially to the various treatments. In detailed time-course quantitative PCR analysis, specific members of both AOX and NDH gene families displayed coordinated responses to treatments. In particular, the co-expression of AOX1a and NDB2 observed under a number of treatments suggested co-regulation that may be directed by common sequence elements arranged hierarchically in the upstream promoter regions of these genes. A series of treatment sets were identified, representing the response of specific AOX and NDH genes to mitochondrial inhibition, plastid inhibition and abiotic stresses. These treatment sets emphasise the multiplicity of pathways affecting alternative electron transport components in plants.
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Affiliation(s)
- Rachel Clifton
- Plant Molecular Biology Group, School of Biomedical and Chemical Sciences, The University of Western Australia, Crawley, Western Australia, Australia
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