1
|
Qin H, Yang W, Liu Z, Ouyang Y, Wang X, Duan H, Zhao B, Wang S, Zhang J, Chang Y, Jiang K, Yu K, Zhang X. Mitochondrial VOLTAGE-DEPENDENT ANION CHANNEL 3 regulates stomatal closure by abscisic acid signaling. PLANT PHYSIOLOGY 2024; 194:1041-1058. [PMID: 37772952 DOI: 10.1093/plphys/kiad516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/22/2023] [Accepted: 08/25/2023] [Indexed: 09/30/2023]
Abstract
In Arabidopsis (Arabidopsis thaliana), stomatal closure mediated by abscisic acid (ABA) is redundantly controlled by ABA receptor family proteins (PYRABACTIN RESISTANCE 1 [PYR1]/PYR1-LIKE [PYLs]) and subclass III SUCROSE NONFERMENTING 1 (SNF1)-RELATED PROTEIN KINASES 2 (SnRK2s). Among these proteins, the roles of PYR1, PYL2, and SnRK2.6 are more dominant. A recent discovery showed that ABA-induced accumulation of reactive oxygen species (ROS) in mitochondria promotes stomatal closure. By analyzing stomatal movements in an array of single and higher order mutants, we revealed that the mitochondrial protein VOLTAGE-DEPENDENT ANION CHANNEL 3 (VDAC3) jointly regulates ABA-mediated stomatal closure with a specialized set of PYLs and SnRK2s by affecting cellular and mitochondrial ROS accumulation. VDAC3 interacted with 9 PYLs and all 3 subclass III SnRK2s. Single mutation in VDAC3, PYLs (except PYR1 and PYL2), or SnRK2.2/2.3 had little effect on ABA-mediated stomatal closure. However, knocking out PYR1, PYL1/2/4/8, or SnRK2.2/2.3 in vdac3 mutants resulted in significantly delayed or attenuated ABA-mediated stomatal closure, despite the presence of other PYLs or SnRK2s conferring redundant functions. We found that cellular and mitochondrial accumulation of ROS induced by ABA was altered in vdac3pyl1 mutants. Moreover, H2O2 treatment restored ABA-induced stomatal closure in mutants with decreased stomatal sensitivity to ABA. Our work reveals that VDAC3 ensures redundant control of ABA-mediated stomatal closure by canonical ABA signaling components.
Collapse
Affiliation(s)
- Haixia Qin
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Wenqi Yang
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Zile Liu
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Yi Ouyang
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Xiao Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Haiyang Duan
- State Key Laboratory of Wheat and Maize Crops Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Bing Zhao
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Shujie Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Junli Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Yuankai Chang
- School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Kun Jiang
- College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Ke Yu
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Xuebin Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China
| |
Collapse
|
2
|
Rodriguez Gallo MC, Li Q, Talasila M, Uhrig RG. Quantitative Time-Course Analysis of Osmotic and Salt Stress in Arabidopsis thaliana Using Short Gradient Multi-CV FAIMSpro BoxCar DIA. Mol Cell Proteomics 2023; 22:100638. [PMID: 37704098 PMCID: PMC10663867 DOI: 10.1016/j.mcpro.2023.100638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 08/22/2023] [Accepted: 08/27/2023] [Indexed: 09/15/2023] Open
Abstract
A major limitation when undertaking quantitative proteomic time-course experimentation is the tradeoff between depth-of-analysis and speed-of-analysis. In high complexity and high dynamic range sample types, such as plant extracts, balance between resolution and time is especially apparent. To address this, we evaluate multiple compensation voltage (CV) high field asymmetric waveform ion mobility spectrometry (FAIMSpro) settings using the latest label-free single-shot Orbitrap-based DIA acquisition workflows for their ability to deeply quantify the Arabidopsis thaliana seedling proteome. Using a BoxCarDIA acquisition workflow with a -30 -50 -70 CV FAIMSpro setting, we were able to consistently quantify >5000 Arabidopsis seedling proteins over a 21-min gradient, facilitating the analysis of ∼42 samples per day. Utilizing this acquisition approach, we then quantified proteome-level changes occurring in Arabidopsis seedling shoots and roots over 24 h of salt and osmotic stress, to identify early and late stress response proteins and reveal stress response overlaps. Here, we successfully quantify >6400 shoot and >8500 root protein groups, respectively, quantifying nearly ∼9700 unique protein groups in total across the study. Collectively, we pioneer a short gradient, multi-CV FAIMSpro BoxCarDIA acquisition workflow that represents an exciting new analysis approach for undertaking quantitative proteomic time-course experimentation in plants.
Collapse
Affiliation(s)
- M C Rodriguez Gallo
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Q Li
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - M Talasila
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - R G Uhrig
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada; Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada.
| |
Collapse
|
3
|
Wang Z, Chen J, Ding J, Han J, Shi L. GlMPC activated by GCN4 regulates secondary metabolism under nitrogen limitation conditions in Ganoderma lucidum. mBio 2023; 14:e0135623. [PMID: 37732773 PMCID: PMC10653791 DOI: 10.1128/mbio.01356-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 07/26/2023] [Indexed: 09/22/2023] Open
Abstract
IMPORTANCE Mitochondrial pyruvate carrier (MPC) is a pyruvate transporter that plays a crucial role in regulating the carbon metabolic flow and is considered an essential mechanism for microorganisms to adapt to environmental changes. However, it remains unclear how MPC responds to environmental stress in organisms. General control non-derepressible 4 (GCN4), a key regulator of nitrogen metabolism, plays a pivotal role in the growth and development of fungi. In this study, we report that GCN4 can directly bind to the promoter region and activate the expression of GlMPC, thereby regulating the tricarboxylic acid cycle and secondary metabolism under nitrogen limitation conditions in Ganoderma lucidum. These findings provide significant insights into the regulation of carbon and nitrogen metabolism in fungi, highlighting the critical role of GCN4 in coordinating metabolic adaptation to environmental stresses.
Collapse
Affiliation(s)
- Zi Wang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture Microbiology Department, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Juhong Chen
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture Microbiology Department, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Juan Ding
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture Microbiology Department, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Jing Han
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture Microbiology Department, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Liang Shi
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture Microbiology Department, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| |
Collapse
|
4
|
Silva FA, Dias MS, Fernandes PD, Marcelino ADAL, Lima AM, Pereira RF, Barbosa DD, Silva MFC, Silva AAR, Santos RC. Pyruvic acid as attenuator of water deficit in cotton plants varying the phenological stage. BRAZ J BIOL 2023; 83:e272003. [PMID: 37162072 DOI: 10.1590/1519-6984.272003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 03/27/2023] [Indexed: 05/11/2023] Open
Abstract
The lack of water during crop growth causes damage to any production system, especially when it occurs during the initial establishment or beginning of the reproductive stage. Although cotton can be properly managed in regions with water limitation, its yield is affected at different levels according to the genetics of the cultivar adopted. Exogenous application of some organic components has shown a stress-mitigating effect and can be a valuable procedure to enhance the yield of water stress-sensitive cultivars. The objective of this work was to evaluate the benefits of exogenous application of pyruvic acid (100 µM) in cotton plants under water deficit varying the phenological stage of the crop. The experiment was conducted in a greenhouse, where the plants were grown in pots and subjected to seven days of water suspension, initiated individually in stages V2 and B1. Each pot contained two plants. The treatments adopted were: T1 - control, T2 - water suppression; and T3 - water suppression + pyruvate application. The design was randomized blocks in a factorial scheme (3 × 3) with three replicates. The reductions in gas exchange and growth of the cultivars BRS Seridó, CNPA 7MH and FM 966 were more significant in the reproductive stage, especially for FM 966, which was more sensitive. Pyruvate application reduced the effects of water suppression on boll production by 31% in BRS Seridó and 34% in CNPA 7MH and FM 966.
Collapse
Affiliation(s)
- F A Silva
- Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Centro de Tecnologia e Recursos Naturais - CTRN, Campina Grande, PB, Brasil
| | - M S Dias
- Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Centro de Tecnologia e Recursos Naturais - CTRN, Campina Grande, PB, Brasil
| | - P D Fernandes
- Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Centro de Tecnologia e Recursos Naturais - CTRN, Campina Grande, PB, Brasil
| | - A D A L Marcelino
- Universidade Federal da Paraíba, Centro de Ciências Agrárias - CCA, Departamento de Fitotecnia e Ciências Ambientais - DFCA, Areia, PB, Brasil
| | - A M Lima
- Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Centro de Tecnologia e Recursos Naturais - CTRN, Campina Grande, PB, Brasil
| | - R F Pereira
- Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA Algodão, Campina Grande, PB, Brasil
| | - D D Barbosa
- Universidade Federal da Paraíba, Centro de Ciências Agrárias - CCA, Departamento de Fitotecnia e Ciências Ambientais - DFCA, Areia, PB, Brasil
| | - M F C Silva
- Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Centro de Tecnologia e Recursos Naturais - CTRN, Campina Grande, PB, Brasil
| | - A A R Silva
- Universidade Federal de Campina Grande - UFCG, Unidade Acadêmica de Engenharia Agrícola - UAEA, Centro de Tecnologia e Recursos Naturais - CTRN, Campina Grande, PB, Brasil
| | - R C Santos
- Universidade Federal da Paraíba, Centro de Ciências Agrárias - CCA, Departamento de Fitotecnia e Ciências Ambientais - DFCA, Areia, PB, Brasil
| |
Collapse
|
5
|
Li L, Hong D, An C, Chen Y, Zhao P, Li X, Xiong F, Ren M, Xu R. Overexpression of TaLAX3-1B alters the stomatal aperture and improves the salt stress resistance of tobacco. Mol Biol Rep 2022; 49:7455-7464. [PMID: 35624389 DOI: 10.1007/s11033-022-07548-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 04/29/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Stomata, which play important roles in both optimizing photosynthesis efficiency and adapting to stress, are closely related to IAA and ABA. In plants, the auxin influx carrier LAX3 has been found to play roles in development and stress tolerance. However, the function of LAX3 in stomata and in response to salt stress remains largely unknown. METHODS AND RESULTS Here, we show that overexpression of wheat TaLAX3-1B in tobacco results in a decrease in stomatal aperture and a relatively closed state of the stomata. In addition, the stomatal movement of the OxTaLAX3-1B lines was less sensitive to ABA than that of the WT. Consistently, compared with the WT, the OxTaLAX3-1B lines showed significantly higher expression of stomate-, IAA- and ABA-related genes and endogenous IAA and ABA contents. Furthermore, compared with the WT, the OxTaLAX3-1B lines exhibited higher proline content, salt stress-related gene expression and ROS antioxidant enzyme activity but lower MDA content and ROS accumulation after salt treatment. CONCLUSIONS The present results suggest that TaLAX3-1B plays a positive role in regulating stomatal closure and enhancing salt stress tolerance.
Collapse
Affiliation(s)
- Luhua Li
- College of Agriculture, Guizhou University, Guiyang, 550025, China
- Guizhou Sub-Center of National Wheat Improvement Center, Guiyang, 550025, China
| | - Dingli Hong
- College of Agriculture, Guizhou University, Guiyang, 550025, China
- Guizhou Sub-Center of National Wheat Improvement Center, Guiyang, 550025, China
| | - Chang An
- College of Agriculture, Guizhou University, Guiyang, 550025, China
- Guizhou Sub-Center of National Wheat Improvement Center, Guiyang, 550025, China
| | - Yuxuan Chen
- College of Agriculture, Guizhou University, Guiyang, 550025, China
- Guizhou Sub-Center of National Wheat Improvement Center, Guiyang, 550025, China
| | - Pengpeng Zhao
- College of Agriculture, Guizhou University, Guiyang, 550025, China
- Guizhou Sub-Center of National Wheat Improvement Center, Guiyang, 550025, China
| | - Xin Li
- College of Agriculture, Guizhou University, Guiyang, 550025, China
- Guizhou Sub-Center of National Wheat Improvement Center, Guiyang, 550025, China
| | - Fumin Xiong
- College of Agriculture, Guizhou University, Guiyang, 550025, China
- Guizhou Sub-Center of National Wheat Improvement Center, Guiyang, 550025, China
| | - Mingjian Ren
- College of Agriculture, Guizhou University, Guiyang, 550025, China
- Guizhou Sub-Center of National Wheat Improvement Center, Guiyang, 550025, China
| | - Ruhong Xu
- College of Agriculture, Guizhou University, Guiyang, 550025, China.
- Guizhou Sub-Center of National Wheat Improvement Center, Guiyang, 550025, China.
| |
Collapse
|
6
|
Effects of Typical Antimicrobials on Growth Performance, Morphology and Antimicrobial Residues of Mung Bean Sprouts. Antibiotics (Basel) 2022; 11:antibiotics11060807. [PMID: 35740213 PMCID: PMC9219749 DOI: 10.3390/antibiotics11060807] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/13/2022] [Accepted: 06/13/2022] [Indexed: 01/11/2023] Open
Abstract
Antimicrobials may be used to inhibit the growth of micro-organisms in the cultivation of mung bean sprouts, but the effects on mung bean sprouts are unclear. In the present study, the growth performance, morphology, antimicrobial effect and antimicrobial residues of mung bean sprouts cultivated in typical antimicrobial solutions were investigated. A screening of antimicrobial residues in thick-bud and rootless mung bean sprouts from local markets showed that the positive ratios of chloramphenicol, enrofloxacin, and furazolidone were 2.78%, 22.22%, and 13.89%, respectively. The cultivating experiment indicated that the production of mung bean sprouts in antimicrobial groups was significantly reduced over 96 h (p < 0.05). The bud and root length of mung bean sprouts in enrofloxacin, olaquindox, doxycycline and furazolidone groups were significantly shortened (p < 0.05), which cultivated thick-bud and rootless mung bean sprouts similar to the 6-benzyl-adenine group. Furthermore, linear regression analysis showed average optical density of 450 nm in circulating water and average production had no obvious correlation in mung bean sprouts (p > 0.05). Antimicrobial residues were found in both mung bean sprouts and circulating water. These novel findings reveal that the antimicrobials could cultivate thick-bud and rootless mung bean sprouts due to their toxicity. This study also proposed a new question regarding the abuse of antimicrobials in fast-growing vegetables, which could be a potential food safety issue.
Collapse
|
7
|
Liang C, Li C, Wu J, Zhao M, Chen D, Liu C, Chu J, Zhang W, Hwang I, Wang M. SORTING NEXIN2 proteins mediate stomatal movement and the response to drought stress by modulating trafficking and protein levels of the ABA exporter ABCG25. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 110:1603-1618. [PMID: 35384109 DOI: 10.1111/tpj.15758] [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: 08/09/2021] [Revised: 03/23/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
The phytohormone abscisic acid (ABA) regulates ion channel activity and stomatal movement in response to drought stress. Cellular ABA levels change depending on cellular and environmental conditions via modulation of its biosynthesis, catabolism and transport. Although factors involved in ABA biosynthesis and degradation have been studied extensively, how ABA transporters are modulated to fine-tune ABA levels, especially under drought stress, remains elusive. Here, we show that Arabidopsis thaliana SORTING NEXIN 2 (SNX2) proteins play a critical role in endosomal trafficking of the ABA exporter ATP BINDING CASETTE G25 (ABCG25) via direct interaction at endosomes, leading to its degradation in the vacuole. In agreement, snx2a and snx2b mutant plants showed enhanced recycling of GFP-ABCG25 from early endosomes to the plasma membrane and higher accumulation of GFP-ABCG25. Phenotypically, snx2a and snx2b plants were highly sensitive to exogenous ABA and displayed enhanced ABA-mediated inhibition of inward K+ currents and ABA-mediated activation of slow anion currents in guard cells, resulting in an increased tolerance to drought stress. Based on these results, we propose that SNX2 proteins play a crucial role in stomatal movement and tolerance to drought stress by modulating the endosomal trafficking of ABCG25 and thus cellular ABA levels.
Collapse
Affiliation(s)
- Chaochao Liang
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, P.R. China
| | - Chunlong Li
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Jing Wu
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, P.R. China
| | - Min Zhao
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, P.R. China
| | - Donghua Chen
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, P.R. China
| | - Cuimei Liu
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, P.R. China
| | - Jinfang Chu
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, P.R. China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100039, P.R. China
| | - Wei Zhang
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, P.R. China
| | - Inhwan Hwang
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 790-784, South Korea
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, South Korea
| | - Mei Wang
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, P.R. China
| |
Collapse
|
8
|
Le XH, Lee CP, Millar AH. The mitochondrial pyruvate carrier (MPC) complex mediates one of three pyruvate-supplying pathways that sustain Arabidopsis respiratory metabolism. THE PLANT CELL 2021; 33:2776-2793. [PMID: 34137858 PMCID: PMC8408480 DOI: 10.1093/plcell/koab148] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/19/2021] [Indexed: 05/03/2023]
Abstract
Malate oxidation by plant mitochondria enables the generation of both oxaloacetate and pyruvate for tricarboxylic acid (TCA) cycle function, potentially eliminating the need for pyruvate transport into mitochondria in plants. Here, we show that the absence of the mitochondrial pyruvate carrier 1 (MPC1) causes the co-commitment loss of its putative orthologs, MPC3/MPC4, and eliminates pyruvate transport into Arabidopsis thaliana mitochondria, proving it is essential for MPC complex function. While the loss of either MPC or mitochondrial pyruvate-generating NAD-malic enzyme (NAD-ME) did not cause vegetative phenotypes, the lack of both reduced plant growth and caused an increase in cellular pyruvate levels, indicating a block in respiratory metabolism, and elevated the levels of branched-chain amino acids at night, a sign of alterative substrate provision for respiration. 13C-pyruvate feeding of leaves lacking MPC showed metabolic homeostasis was largely maintained except for alanine and glutamate, indicating that transamination contributes to the restoration of the metabolic network to an operating equilibrium by delivering pyruvate independently of MPC into the matrix. Inhibition of alanine aminotransferases when MPC1 is absent resulted in extremely retarded phenotypes in Arabidopsis, suggesting all pyruvate-supplying enzymes work synergistically to support the TCA cycle for sustained plant growth.
Collapse
Affiliation(s)
- Xuyen H. Le
- School of Molecular Sciences, The University of Western Australia, Crawley, Perth 6009, Australia
- The ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Crawley, Perth 6009, Australia
| | - Chun-Pong Lee
- School of Molecular Sciences, The University of Western Australia, Crawley, Perth 6009, Australia
- The ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Crawley, Perth 6009, Australia
| | - A. Harvey Millar
- School of Molecular Sciences, The University of Western Australia, Crawley, Perth 6009, Australia
- The ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Crawley, Perth 6009, Australia
- Author for correspondence:
| |
Collapse
|
9
|
Van Aken O. Mitochondrial redox systems as central hubs in plant metabolism and signaling. PLANT PHYSIOLOGY 2021; 186:36-52. [PMID: 33624829 PMCID: PMC8154082 DOI: 10.1093/plphys/kiab101] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 02/11/2021] [Indexed: 05/06/2023]
Abstract
Plant mitochondria are indispensable for plant metabolism and are tightly integrated into cellular homeostasis. This review provides an update on the latest research concerning the organization and operation of plant mitochondrial redox systems, and how they affect cellular metabolism and signaling, plant development, and stress responses. New insights into the organization and operation of mitochondrial energy systems such as the tricarboxylic acid cycle and mitochondrial electron transport chain (mtETC) are discussed. The mtETC produces reactive oxygen and nitrogen species, which can act as signals or lead to cellular damage, and are thus efficiently removed by mitochondrial antioxidant systems, including Mn-superoxide dismutase, ascorbate-glutathione cycle, and thioredoxin-dependent peroxidases. Plant mitochondria are tightly connected with photosynthesis, photorespiration, and cytosolic metabolism, thereby providing redox-balancing. Mitochondrial proteins are targets of extensive post-translational modifications, but their functional significance and how they are added or removed remains unclear. To operate in sync with the whole cell, mitochondria can communicate their functional status via mitochondrial retrograde signaling to change nuclear gene expression, and several recent breakthroughs here are discussed. At a whole organism level, plant mitochondria thus play crucial roles from the first minutes after seed imbibition, supporting meristem activity, growth, and fertility, until senescence of darkened and aged tissue. Finally, plant mitochondria are tightly integrated with cellular and organismal responses to environmental challenges such as drought, salinity, heat, and submergence, but also threats posed by pathogens. Both the major recent advances and outstanding questions are reviewed, which may help future research efforts on plant mitochondria.
Collapse
Affiliation(s)
- Olivier Van Aken
- Department of Biology, Lund University, Lund, Sweden
- Author for communication:
| |
Collapse
|
10
|
Welchen E, Canal MV, Gras DE, Gonzalez DH. Cross-talk between mitochondrial function, growth, and stress signalling pathways in plants. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:4102-4118. [PMID: 33369668 DOI: 10.1093/jxb/eraa608] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/22/2020] [Indexed: 05/16/2023]
Abstract
Plant mitochondria harbour complex metabolic routes that are interconnected with those of other cell compartments, and changes in mitochondrial function remotely influence processes in different parts of the cell. This implies the existence of signals that convey information about mitochondrial function to the rest of the cell. Increasing evidence indicates that metabolic and redox signals are important for this process, but changes in ion fluxes, protein relocalization, and physical contacts with other organelles are probably also involved. Besides possible direct effects of these signalling molecules on cellular functions, changes in mitochondrial physiology also affect the activity of different signalling pathways that modulate plant growth and stress responses. As a consequence, mitochondria influence the responses to internal and external factors that modify the activity of these pathways and associated biological processes. Acting through the activity of hormonal signalling pathways, mitochondria may also exert remote control over distant organs or plant tissues. In addition, an intimate cross-talk of mitochondria with energy signalling pathways, such as those represented by TARGET OF RAPAMYCIN and SUCROSE NON-FERMENTING1-RELATED PROTEIN KINASE 1, can be envisaged. This review discusses available evidence on the role of mitochondria in shaping plant growth and stress responses through various signalling pathways.
Collapse
Affiliation(s)
- Elina Welchen
- Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, 3000 Santa Fe, Argentina
| | - María Victoria Canal
- Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, 3000 Santa Fe, Argentina
| | - Diana E Gras
- Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, 3000 Santa Fe, Argentina
| | - Daniel H Gonzalez
- Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, 3000 Santa Fe, Argentina
| |
Collapse
|
11
|
Chen D, He L, Lin M, Jing Y, Liang C, Liu H, Gao J, Zhang W, Wang M. A ras-related small GTP-binding protein, RabE1c, regulates stomatal movements and drought stress responses by mediating the interaction with ABA receptors. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 306:110858. [PMID: 33775364 DOI: 10.1016/j.plantsci.2021.110858] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 01/22/2021] [Accepted: 02/17/2021] [Indexed: 06/12/2023]
Abstract
Drought represents a leading constraint over crop productivity worldwide. The plant response to this stress is centered on the behavior of the cell membrane, where the transduction of abscisic acid (ABA) signaling occurs. Here, the Ras-related small GTP-binding protein RabE1c has been shown able to bind to an ABA receptor in the Arabidopsis thaliana plasma membrane, thereby positively regulating ABA signaling. RabE1c is highly induced by drought stress and expressed abundantly in guard cells. In the loss-of-function rabe1c mutant, both stomatal closure and the whole plant drought stress response showed a reduced sensitivity to ABA treatment, demonstrating that RabE1c is involved in the control over transpirative water loss through the stomata. Impairment of RabE1c's function suppressed the accumulation of the ABA receptor PYL4. The over-expression of RabE1c in A. thaliana enhanced the plants' ability to tolerate drought, and a similar phenotypic effect was achieved by constitutively expressing the gene in Chinese cabbage (Brassica rapassp. pekinensis). The leading conclusion was that RabE1c promotes the degradation of PYL4, suggesting a possible genetic strategy to engineer crop plants to better withstand drought stress.
Collapse
Affiliation(s)
- Donghua Chen
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Lilong He
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China; Shandong Key Laboratory of Greenhouse Vegetable Biology, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Minyan Lin
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Ying Jing
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Chaochao Liang
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Huiping Liu
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Jianwei Gao
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Wei Zhang
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Mei Wang
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China.
| |
Collapse
|
12
|
Mitochondrial Pyruvate Carrier Subunits Are Essential for Pyruvate-Driven Respiration, Infectivity, and Intracellular Replication of Trypanosoma cruzi. mBio 2021; 12:mBio.00540-21. [PMID: 33824204 PMCID: PMC8092248 DOI: 10.1128/mbio.00540-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Trypanosoma cruzi is the causative agent of Chagas disease. Pyruvate is the end product of glycolysis, and its transport into the mitochondrion is mediated by the mitochondrial pyruvate carrier (MPC) subunits. Pyruvate is the final metabolite of glycolysis and can be converted into acetyl coenzyme A (acetyl-CoA) in mitochondria, where it is used as the substrate for the tricarboxylic acid cycle. Pyruvate availability in mitochondria depends on its active transport through the heterocomplex formed by the mitochondrial pyruvate carriers 1 and 2 (MPC1/MPC2). We report here studies on MPC1/MPC2 of Trypanosoma cruzi, the etiologic agent of Chagas disease. Endogenous tagging of T. cruziMPC1 (TcMPC1) and TcMPC2 with 3×c-Myc showed that both encoded proteins colocalize with MitoTracker to the mitochondria of epimastigotes. Individual knockout (KO) of TcMPC1 and TcMPC2 genes using CRISPR/Cas9 was confirmed by PCR and Southern blot analyses. Digitonin-permeabilized TcMPC1-KO and TcMPC2-KO epimastigotes showed reduced O2 consumption rates when pyruvate, but not succinate, was used as the mitochondrial substrate, while α-ketoglutarate increased their O2 consumption rates due to an increase in α-ketoglutarate dehydrogenase activity. Defective mitochondrial pyruvate import resulted in decreased Ca2+ uptake. The inhibitors UK5099 and malonate impaired pyruvate-driven oxygen consumption in permeabilized control cells. Inhibition of succinate dehydrogenase by malonate indicated that pyruvate needs to be converted into succinate to increase respiration. TcMPC1-KO and TcMPC2-KO epimastigotes showed little growth differences in standard or low-glucose culture medium. However, the ability of trypomastigotes to infect tissue culture cells and replicate as intracellular amastigotes was decreased in TcMPC-KOs. Overall, T. cruzi MPC1 and MPC2 are essential for cellular respiration in the presence of pyruvate, invasion of host cells, and replication of amastigotes.
Collapse
|
13
|
Li M, Yang Y, Raza A, Yin S, Wang H, Zhang Y, Dong J, Wang G, Zhong C, Zhang H, Liu J, Jin W. Heterologous expression of Arabidopsis thaliana rty gene in strawberry (Fragaria × ananassa Duch.) improves drought tolerance. BMC PLANT BIOLOGY 2021; 21:57. [PMID: 33478380 PMCID: PMC7818561 DOI: 10.1186/s12870-021-02839-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Strawberry (Fragaria × ananassa Duch.) is an important fruit crop worldwide. It was particularly sensitive to drought stress because of their fibrous and shallow root systems. Mutant rty of Arabidopsis thaliana ROOTY (RTY) results in increased endogenous auxin levels, more roots, and shoot growth. It is still unclear whether the rty gene improves stress tolerance in strawberry. RESULTS rty gene was isolated from Arabidopsis thaliana and placed under the control of the cauliflower mosaic virus (CaMV) 35S promoter in the pBI121-rty binary vector carrying the selectable marker of neomycin phosphotransferase II (NPT II). Seven transgenic lines were confirmed by PCR and western blot analysis. Accumulations of IAA and ABA were significantly increased in the transgenic plants. The endogenous IAA contents were 46.5 ng g- 1 and 66.0 ng g- 1in control and transgenic plants respectively. The endogenous ABA contents in the control plant were 236.3 ng g- 1 and in transgenic plants were 543.8 ng g- 1. The production of adventitious roots and trichomes were enhanced in the transgenic plants. Furthermore, transcript levels of the genes including IAA and ABA biosynthetic, and stress-responsive genes, were higher in the transgenic plants than in the control plants under drought conditions. Water use efficiency and a reduced water loss rate were enhanced in the transgenic strawberry plants. Additionally, peroxidase and catalase activities were significantly higher in the transgenic plants than in the control plants. The experiment results revealed a novel function for rty related to ABA and drought responses. CONCLUSIONS The rty gene improved hormone-mediated drought tolerance in transgenic strawberry. The heterologous expression of rty in strawberry improved drought tolerance by promoting auxin and ABA accumulation. These phytohormones together brought about various physiological changes that improved drought tolerance via increased root production, trichome density, and stomatal closure. Our results suggested that a transgenic approach can be used to overcome the inherent trade-off between plant growth and drought tolerance by enhancing water use efficiency and reducing water loss rate under water shortage conditions.
Collapse
Affiliation(s)
- Maofu Li
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
| | - Yuan Yang
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing, 100093, P. R. China
| | - Ali Raza
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, 430062, P. R. China
| | - Shanshan Yin
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
| | - Hua Wang
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
| | - Yuntao Zhang
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing, 100093, P. R. China
| | - Jing Dong
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing, 100093, P. R. China
| | - Guixia Wang
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing, 100093, P. R. China
| | - Chuanfei Zhong
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing, 100093, P. R. China
| | - Hong Zhang
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
| | - Jiashen Liu
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China
| | - Wanmei Jin
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, P. R. China.
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing, 100093, P. R. China.
| |
Collapse
|
14
|
Fernie AR, Cavalcanti JHF, Nunes-Nesi A. Metabolic Roles of Plant Mitochondrial Carriers. Biomolecules 2020; 10:E1013. [PMID: 32650612 PMCID: PMC7408384 DOI: 10.3390/biom10071013] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 06/28/2020] [Accepted: 06/29/2020] [Indexed: 02/07/2023] Open
Abstract
Mitochondrial carriers (MC) are a large family (MCF) of inner membrane transporters displaying diverse, yet often redundant, substrate specificities, as well as differing spatio-temporal patterns of expression; there are even increasing examples of non-mitochondrial subcellular localization. The number of these six trans-membrane domain proteins in sequenced plant genomes ranges from 39 to 141, rendering the size of plant families larger than that found in Saccharomyces cerevisiae and comparable with Homo sapiens. Indeed, comparison of plant MCs with those from these better characterized species has been highly informative. Here, we review the most recent comprehensive studies of plant MCFs, incorporating the torrent of genomic data emanating from next-generation sequencing techniques. As such we present a more current prediction of the substrate specificities of these carriers as well as review the continuing quest to biochemically characterize this feature of the carriers. Taken together, these data provide an important resource to guide direct genetic studies aimed at addressing the relevance of these vital carrier proteins.
Collapse
Affiliation(s)
- Alisdair R. Fernie
- Max-Planck-Instiute of Molecular Plant Physiology, 14476 Postdam-Golm, Germany
| | - João Henrique F. Cavalcanti
- Instituto de Educação, Agricultura e Ambiente, Universidade Federal do Amazonas, Humaitá 69800-000, Amazonas, Brazil;
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa 36570-900, Minas Gerais, Brazil
| |
Collapse
|
15
|
Chen K, Li GJ, Bressan RA, Song CP, Zhu JK, Zhao Y. Abscisic acid dynamics, signaling, and functions in plants. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:25-54. [PMID: 31850654 DOI: 10.1111/jipb.12899] [Citation(s) in RCA: 571] [Impact Index Per Article: 142.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 12/16/2019] [Indexed: 05/18/2023]
Abstract
Abscisic acid (ABA) is an important phytohormone regulating plant growth, development, and stress responses. It has an essential role in multiple physiological processes of plants, such as stomatal closure, cuticular wax accumulation, leaf senescence, bud dormancy, seed germination, osmotic regulation, and growth inhibition among many others. Abscisic acid controls downstream responses to abiotic and biotic environmental changes through both transcriptional and posttranscriptional mechanisms. During the past 20 years, ABA biosynthesis and many of its signaling pathways have been well characterized. Here we review the dynamics of ABA metabolic pools and signaling that affects many of its physiological functions.
Collapse
Affiliation(s)
- Kong Chen
- Shanghai Center for Plant Stress Biology and CAS Center of Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guo-Jun Li
- Shanghai Center for Plant Stress Biology and CAS Center of Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ray A Bressan
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN, 47907, USA
| | - Chun-Peng Song
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475001, China
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology and CAS Center of Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN, 47907, USA
| | - Yang Zhao
- Shanghai Center for Plant Stress Biology and CAS Center of Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475001, China
| |
Collapse
|
16
|
Zia SF, Berkowitz O, Bedon F, Whelan J, Franks AE, Plummer KM. Direct comparison of Arabidopsis gene expression reveals different responses to melatonin versus auxin. BMC PLANT BIOLOGY 2019; 19:567. [PMID: 31856719 PMCID: PMC6921455 DOI: 10.1186/s12870-019-2158-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 11/25/2019] [Indexed: 05/06/2023]
Abstract
BACKGROUND Melatonin (N-acetyl-5-methoxytryptamine) in plants, regulates shoot and root growth and alleviates environmental stresses. Melatonin and the phyto-hormone auxin are tryptophan-derived compounds. However, it largely remains controversial as to whether melatonin and auxin act through similar or overlapping signalling and regulatory pathways. RESULTS Here, we have used a promoter-activation study to demonstrate that, unlike auxin (1-naphthalene acetic acid, NAA), melatonin neither induces Direct repeat 5 DR5 expression in Arabidopsis thaliana roots under normal growth conditions nor suppresses the induction of Alternative oxidase 1a AOX1a in leaves upon Antimycin A treatment, both of which are the hallmarks of auxin action. Additionally, comparative global transcriptome analysis conducted on Arabidopsis treated with melatonin or NAA revealed differences in the number and types of differentially expressed genes. Auxin (4.5 μM) altered the expression of a diverse and large number of genes whereas melatonin at 5 μM had no significant effect but melatonin at 100 μM had a modest effect on transcriptome compared to solvent-treated control. Interestingly, the prominent category of genes differentially expressed upon exposure to melatonin trended towards biotic stress defence pathways while downregulation of key genes related to photosynthesis was observed. CONCLUSION Together these findings indicate that though they are both indolic compounds, melatonin and auxin act through different pathways to alter gene expression in Arabidopsis thaliana. Furthermore, it appears that effects of melatonin enable Arabidopsis thaliana to prioritize biotic stress defence signalling rather than growth. These findings clear the current confusion in the literature regarding the relationship of melatonin and auxin and also have greater implications of utilizing melatonin for improved plant protection.
Collapse
Affiliation(s)
- Sajal F Zia
- Department of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Oliver Berkowitz
- Department of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Bundoora, VIC, 3086, Australia
- ARC Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Frank Bedon
- Department of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Bundoora, VIC, 3086, Australia.
| | - James Whelan
- Department of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Bundoora, VIC, 3086, Australia
- ARC Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Ashley E Franks
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3086, Australia
- Centre for Future Landscapes, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Kim M Plummer
- Department of Animal, Plant and Soil Sciences, AgriBio, La Trobe University, Bundoora, VIC, 3086, Australia.
| |
Collapse
|
17
|
Boeckx J, Pols S, Hertog MLATM, Nicolaï BM. Regulation of the Central Carbon Metabolism in Apple Fruit Exposed to Postharvest Low-Oxygen Stress. FRONTIERS IN PLANT SCIENCE 2019; 10:1384. [PMID: 31737012 PMCID: PMC6831743 DOI: 10.3389/fpls.2019.01384] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 10/07/2019] [Indexed: 05/07/2023]
Abstract
After harvest, fruit remain metabolically active and continue to ripen. The main goal of postharvest storage is to slow down the metabolic activity of the detached fruit. In many cases, this is accomplished by storing fruit at low temperature in combination with low oxygen (O2) and high carbon dioxide (CO2) partial pressures. However, altering the normal atmospheric conditions is not without any risk and can induce low-O2 stress. This review focuses on the central carbon metabolism of apple fruit during postharvest storage, both under normal O2 conditions and under low-O2 stress conditions. While the current review is focused on apple fruit, most research on the central carbon metabolism, low-O2 stress, and O2 sensing has been done on a range of different model plants (e.g., Arabidopsis, potato, rice, and maize) using various plant organs (e.g., seedlings, tubers, roots, and leaves). This review pulls together this information from the various sources into a coherent overview to facilitate the research on the central carbon metabolism in apple fruit exposed to postharvest low-O2 stress.
Collapse
Affiliation(s)
| | | | | | - Bart M. Nicolaï
- KU Leuven, BIOSYST-MeBioS, Leuven, Belgium
- Flanders Centre of Postharvest Technology, Leuven, Belgium
| |
Collapse
|
18
|
Tang BL. Targeting the Mitochondrial Pyruvate Carrier for Neuroprotection. Brain Sci 2019; 9:brainsci9090238. [PMID: 31540439 PMCID: PMC6770198 DOI: 10.3390/brainsci9090238] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 09/15/2019] [Accepted: 09/16/2019] [Indexed: 01/02/2023] Open
Abstract
The mitochondrial pyruvate carriers mediate pyruvate import into the mitochondria, which is key to the sustenance of the tricarboxylic cycle and oxidative phosphorylation. However, inhibition of mitochondria pyruvate carrier-mediated pyruvate transport was recently shown to be beneficial in experimental models of neurotoxicity pertaining to the context of Parkinson’s disease, and is also protective against excitotoxic neuronal death. These findings attested to the metabolic adaptability of neurons resulting from MPC inhibition, a phenomenon that has also been shown in other tissue types. In this short review, I discuss the mechanism and potential feasibility of mitochondrial pyruvate carrier inhibition as a neuroprotective strategy in neuronal injury and neurodegenerative diseases.
Collapse
Affiliation(s)
- Bor Luen Tang
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University Health System, Singapore 117596, Singapore.
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore 119077, Singapore.
| |
Collapse
|
19
|
Li Z, Li L, Zhou K, Zhang Y, Han X, Din Y, Ge X, Qin W, Wang P, Li F, Ma Z, Yang Z. GhWRKY6 Acts as a Negative Regulator in Both Transgenic Arabidopsis and Cotton During Drought and Salt Stress. Front Genet 2019; 10:392. [PMID: 31080461 PMCID: PMC6497802 DOI: 10.3389/fgene.2019.00392] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 04/10/2019] [Indexed: 11/16/2022] Open
Abstract
Drought and high salinity are key limiting factors for cotton production. Therefore, research is increasingly focused on the underlying stress response mechanisms of cotton. We first identified and cloned a novel gene encoding the 525 amino acids in cotton, namely GhWRKY6. qRT-PCR analysis indicated that GhWRKY6 was induced by NaCl, PEG 6000 and ABA. Analyses of germination rate and root length indicated that overexpression of GhWRKY6 in Arabidopsis resulted in hypersensitivity to ABA, NaCl, and PEG 6000. In contrast, the loss-of-function mutant wrky6 was insensitive and had slightly longer roots than the wild-type did under these treatment conditions. Furthermore, GhWRKY6 overexpression in Arabidopsis modulated salt- and drought-sensitive phenotypes and stomatal aperture by regulating ABA signaling pathways, and reduced plant tolerance to abiotic stress through reactive oxygen species (ROS) enrichment, reduced proline content, and increased electrolytes and malondialdehyde (MDA). The expression levels of a series of ABA-, salt- and drought-related marker genes were altered in overexpression seedlings. Virus-induced gene silencing (VIGS) technology revealed that down-regulation of GhWRKY6 increased salt tolerance in cotton. These results demonstrate that GhWRKY6 is a negative regulator of plant responses to abiotic stress via the ABA signaling pathway.
Collapse
Affiliation(s)
- Zhi Li
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Lei Li
- Anyang Hospital of Traditional Chinese Medicine, Anyang, China
| | - Kehai Zhou
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Yihao Zhang
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Xiao Han
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Yanpeng Din
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Xiaoyang Ge
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Wenqiang Qin
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Peng Wang
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Fuguang Li
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Zhiying Ma
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Zhaoen Yang
- State Key Laboratory of Cotton Biology (Hebei Base), College of Agronomy, Hebei Agricultural University, Baoding, China.,Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| |
Collapse
|
20
|
Wu Q, Wang M, Shen J, Chen D, Zheng Y, Zhang W. ZmOST1 mediates abscisic acid regulation of guard cell ion channels and drought stress responses. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2019; 61:478-491. [PMID: 30160823 DOI: 10.1111/jipb.12714] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 08/26/2018] [Indexed: 06/08/2023]
Abstract
The phytohormone abscisic acid (ABA) is an important mediator in the drought response, participating in, among other processes, stomatal movements. In Arabidopsis thaliana, the serine/threonine protein kinase, OST1, regulates this response, but the function of its maize homolog has yet to be established. Here, we isolated ZmOST1 and show that its encoded protein indeed acts to regulate guard cell movement. ZmOST1 was ubiquitously expressed throughout the plant, being highly expressed in guard cells, and inducible both by exogenous ABA and water stress. Transient expression of a ZmOST1-GFP fusion protein, in maize mesophyll protoplasts, indicated its subcellular localization in the cytoplasm and nucleus. A Zmost1 loss-of-function mutant exhibited reduced sensitivity to ABA-activated slow anion channels in maize guard cells, and reduced drought tolerance. Constitutive expression of ZmOST1, in an A. thaliana ost1-1 mutant rescued the phenotype with respect both to the sensitivity of guard cell slow anion currents to ABA treatment and stomatal closure. Our findings indicate a positive regulatory role for ZmOST1 in guard cell ABA signaling and drought response in maize plants.
Collapse
Affiliation(s)
- Qiqi Wu
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education; School of Life Science, Shandong University, Tsingtao 266237, China
| | - Mei Wang
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education; School of Life Science, Shandong University, Tsingtao 266237, China
| | - Jianlin Shen
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education; School of Life Science, Shandong University, Tsingtao 266237, China
| | - Donghua Chen
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education; School of Life Science, Shandong University, Tsingtao 266237, China
| | - Yu Zheng
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education; School of Life Science, Shandong University, Tsingtao 266237, China
| | - Wei Zhang
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education; School of Life Science, Shandong University, Tsingtao 266237, China
| |
Collapse
|
21
|
Jing Y, Shi L, Li X, Zheng H, He L. AGP30: Cd tolerance related gene associate with mitochondrial pyruvate carrier 1. PLANT SIGNALING & BEHAVIOR 2019; 14:1629269. [PMID: 31198086 PMCID: PMC6768192 DOI: 10.1080/15592324.2019.1629269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/01/2019] [Accepted: 06/03/2019] [Indexed: 05/21/2023]
Abstract
Heavy metal ions which are not essential elements for basic metabolism severely threaten human health through food chain. As the most water-soluble and absorbed heavy metal ion, Cadmium (Cd) is easily accumulated and contaminates plants. Previously, mitochondrial pyruvate carrier 1 (MPC1) was proved to be required for Cd tolerance and Cd2+ exclusion. In this study, we carried out following mRNA expression profile analysis on Cd-treated mpc1-1 and wild-type plants. After further selection of differential expressed genes and Cd tolerance tests in yeast, we have discovered a novel Cd tolerance related gene: AGP30, which specifically expresses in root and is significantly regulated by MPC under Cd stress. This protein mainly localize in the cell wall of cells in root meristem region, which was consistent with our former Cd2+ flux measurement. In conclusion, our work discovered a new Cd resistant gene for utilizing in transgenic crops for preventing Cd2+ influx.
Collapse
Affiliation(s)
- Ying Jing
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Sciences, Jinan, China
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, China
| | - Lin Shi
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xin Li
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Han Zheng
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Lilong He
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Sciences, Jinan, China
- Key Laboratory of Plant Development and Environmental Adaption Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, China
- CONTACT Lilong He Shandong Key Laboratory of Greenhouse Vegetable Biology, Institute of Vegetables and Flowers, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| |
Collapse
|
22
|
Chen DH, Liu HP, Li CL. Calcium-dependent protein kinase CPK9 negatively functions in stomatal abscisic acid signaling by regulating ion channel activity in Arabidopsis. PLANT MOLECULAR BIOLOGY 2019; 99:113-122. [PMID: 30536042 DOI: 10.1007/s11103-018-0805-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 11/29/2018] [Indexed: 05/24/2023]
Abstract
In this manuscript, we demonstrated the negative role of CPK9 in stomatal ABA signaling, and both CPK9 and CPK33 for accurate guard cell function was explored via cpk9/cpk33 double mutants' phenotype. Abscisic acid (ABA) can inhibit stomatal opening and promote stomatal closure by regulating ion channel activity in guard cell membranes. As an important second messenger, calcium (Ca2+) is essentially needed in ABA regulation of stomatal movement. Calcium-dependent protein kinases (CDPKs) have been proposed to contribute to central Ca2+ signal transduction in plants. Here, we report the functional characterization of CPK9 in Arabidopsis stomatal ABA signaling. CPK9 had high expression in guard cells and the protein was subcellularly located in the cell membrane. A loss-of-function mutant cpk9 showed a much more sensitive phenotype to ABA regulation of stomatal movement and ion channel activity, while CPK9 overexpression lines had opposite phonotypes. These findings demonstrated the negative role of CPK9 in stomatal ABA signaling. As the closest homolog of CPK33, we also proved that stomatal movement of the cpk9/cpk33 double mutants was more sensitive to ABA than either single mutants. These results revealed the role of CPK9 in guard cells, and the need of both CPK9 and CPK33 for accurate guard cell function.
Collapse
Affiliation(s)
- Dong-Hua Chen
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education; School of Life Science, Shandong University, Qingdao, 266237, China
| | - Hui-Ping Liu
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education; School of Life Science, Shandong University, Qingdao, 266237, China
| | - Chun-Long Li
- College of Life Science, Jiangsu Normal University, Xuzhou, 221116, China.
| |
Collapse
|
23
|
Changes in endogenous phytohormones regulated by microRNA-target mRNAs contribute to the development of Dwarf Autotetraploid Chinese Cabbage (Brassica rapa L. ssp. pekinensis). Mol Genet Genomics 2018; 293:1535-1546. [PMID: 30116946 DOI: 10.1007/s00438-018-1480-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 08/09/2018] [Indexed: 12/22/2022]
Abstract
Polyploidization is considered as the major force that drives plant species evolution and biodiversity. The leaves of Chinese cabbage, an important vegetable crop valued for its nutritional quality, constitute the main edible organ. In this study, we found that autotetraploid Chinese cabbage (Brassica rapa ssp. pekinensis) generated from a doubled haploid (DH) line via isolated microspore culture exhibits a dwarf phenotype, along with thick leaves and delayed flowering. Abscisic acid (ABA) and brassinosteroid (BR) levels were significantly lower in autotetraploids compared to DHs. Comparative transcriptome analysis was performed to examine the gene regulatory network. A total of 13,225 differentially expressed genes (DEGs) were detected. Further microRNA (miRNA) analysis identified 102 DEGs that correspond to 35 differentially expressed miRNAs (DEMs). Subsequent screening of these 102 genes identified 13 key genes with 12 corresponding differentially expressed miRNAs that are related to leaf development and dwarfism. These 13 genes are involved in the regulation of various processes, including BR synthesis (dwarfing), plant growth, flowering time delay, ABA pathway-related growth and metabolism, leaf morphology and development, and cell extension. Two dwarfing-related genes (BraA01000252 and BraA05004386) regulated by two miRNAs (novel_15 and novel_54) were determined to be downregulated, indicating their possible role in leaf thickness and dwarfism in autotetraploid plants. We also propose two possible miRNA-dependent regulatory pathways that contribute to trait formation in autotetraploid Chinese cabbage. These results provide a theoretical basis for further work involving Chinese cabbage varieties by inducing polyploidy.
Collapse
|
24
|
Rurek M, Czołpińska M, Pawłowski TA, Staszak AM, Nowak W, Krzesiński W, Spiżewski T. Mitochondrial Biogenesis in Diverse Cauliflower Cultivars under Mild and Severe Drought. Impaired Coordination of Selected Transcript and Proteomic Responses, and Regulation of Various Multifunctional Proteins. Int J Mol Sci 2018; 19:ijms19041130. [PMID: 29642585 PMCID: PMC5979313 DOI: 10.3390/ijms19041130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/09/2018] [Accepted: 04/04/2018] [Indexed: 12/25/2022] Open
Abstract
Mitochondrial responses under drought within Brassica genus are poorly understood. The main goal of this study was to investigate mitochondrial biogenesis of three cauliflower (Brassica oleracea var. botrytis) cultivars with varying drought tolerance. Diverse quantitative changes (decreases in abundance mostly) in the mitochondrial proteome were assessed by two-dimensional gel electrophoresis (2D PAGE) coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS). Respiratory (e.g., complex II, IV (CII, CIV) and ATP synthase subunits), transporter (including diverse porin isoforms) and matrix multifunctional proteins (e.g., components of RNA editing machinery) were diversely affected in their abundance under two drought levels. Western immunoassays showed additional cultivar-specific responses of selected mitochondrial proteins. Dehydrin-related tryptic peptides (found in several 2D spots) immunopositive with dehydrin-specific antisera highlighted the relevance of mitochondrial dehydrin-like proteins for the drought response. The abundance of selected mRNAs participating in drought response was also determined. We conclude that mitochondrial biogenesis was strongly, but diversely affected in various cauliflower cultivars, and associated with drought tolerance at the proteomic and functional levels. However, discussed alternative oxidase (AOX) regulation at the RNA and protein level were largely uncoordinated due to the altered availability of transcripts for translation, mRNA/ribosome interactions, and/or miRNA impact on transcript abundance and translation.
Collapse
Affiliation(s)
- Michał Rurek
- Department of Molecular and Cellular Biology, Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Poznań, Umultowska 89, 61-614 Poznań, Poland.
| | - Magdalena Czołpińska
- Department of Molecular and Cellular Biology, Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Poznań, Umultowska 89, 61-614 Poznań, Poland.
| | | | - Aleksandra Maria Staszak
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland.
- Present address: Department of Plant Physiology, Institute of Biology, Faculty of Biology and Chemistry, University of Białystok, Ciołkowskiego 1J, 15-245 Białystok, Poland.
| | - Witold Nowak
- Molecular Biology Techniques Laboratory, Faculty of Biology, Adam Mickiewicz University, Poznań, Umultowska 89, 61-614 Poznań, Poland.
| | - Włodzimierz Krzesiński
- Department of Vegetable Crops, Poznan University of Life Sciences, Dąbrowskiego 159, 60-594 Poznań, Poland.
| | - Tomasz Spiżewski
- Department of Vegetable Crops, Poznan University of Life Sciences, Dąbrowskiego 159, 60-594 Poznań, Poland.
| |
Collapse
|
25
|
Müller GL, Lara MV, Oitaven P, Andreo CS, Maurino VG, Drincovich MF. Improved water use efficiency and shorter life cycle of Nicotiana tabacum due to modification of guard and vascular companion cells. Sci Rep 2018; 8:4380. [PMID: 29531244 PMCID: PMC5847574 DOI: 10.1038/s41598-018-22431-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 02/22/2018] [Indexed: 01/08/2023] Open
Abstract
Severe droughts are predicted for the twenty-first century, which contrast with the increased demand for plant materials. Thus, to sustain future generations, a great challenge is to improve crop yield and water use efficiency (WUE), which is the carbon gained per water lost. Here, expression of maize NADP-malic enzyme (NADP-ME) in the guard and vascular companion cells of Nicotiana tabacum results in enhanced WUE, earlier flowering and shorter life cycle. Transgenic lines exhibit reduced stomatal aperture than wild-type (WT). Nevertheless, an increased net CO2 fixation rate is observed, which results in less water consumption and more biomass production per water used. Transgenic lines export sugars to the phloem at higher rate than WT, which leads to higher sugars levels in phloem exudates and veins. Leaf quantitative proteomic profiling revealed drastic differences in proteins related to cell cycle, flowering, hormone signaling and carbon metabolism between transgenic lines and WT. We propose that the increased sugar export from leaves in the transgenic lines alleviates sugar negative feedback on photosynthesis and thus, stomatal closure takes place without a penalty in CO2 assimilation rate. This results in improved WUE and accelerated overall life cycle, key traits for plant productivity in the near future world.
Collapse
Affiliation(s)
- Gabriela L Müller
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000, Rosario, Argentina
| | - María V Lara
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000, Rosario, Argentina
| | - Pablo Oitaven
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000, Rosario, Argentina
| | - Carlos S Andreo
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000, Rosario, Argentina
| | - Verónica G Maurino
- Institute of Developmental and Molecular Biology of Plants, Plant Molecular Physiology and Biotechnology Group, Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich-Heine-Universität, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - María F Drincovich
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000, Rosario, Argentina.
| |
Collapse
|
26
|
Zhou CB, Fang JY. The regulation of host cellular and gut microbial metabolism in the development and prevention of colorectal cancer. Crit Rev Microbiol 2018; 44:436-454. [PMID: 29359994 DOI: 10.1080/1040841x.2018.1425671] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Metabolism regulation is crucial in colorectal cancer (CRC) and has emerged as a remarkable field currently. The cellular metabolism of glucose, amino acids and lipids in CRC are all reprogrammed. Each of them changes tumour microenvironment, modulates bacterial composition and activity, and eventually promotes CRC development. Metabolites such as short chain fatty acids, secondary bile acids, N-nitroso compounds, hydrogen sulphide, polyphenols and toxins like fragilysin, FadA, cytolethal distending toxin and colibactin play a dual role in CRC. The relationship of gut microbe-metabolite is essential in remodelling intestinal microbial ecology composition and metabolic activity. It regulates the metabolism of colonic epithelial cells and changes the tumour microenvironment in CRC. Microbial metabolism manipulation has been considered to be potentially preventive in CRC, but more large-scale clinical trials are required before their application in clinical practice in the near future.
Collapse
Affiliation(s)
- Cheng-Bei Zhou
- a Division of Gastroenterology and Hepatology , Shanghai Jiao-Tong University School of Medicine Renji Hospital, Key Laboratory of Gastroenterology & Hepatology, Ministry of Health, State Key Laboratory of Oncogene and Related Gene. Shanghai Institute of Digestive Disease , Shanghai , China
| | - Jing-Yuan Fang
- a Division of Gastroenterology and Hepatology , Shanghai Jiao-Tong University School of Medicine Renji Hospital, Key Laboratory of Gastroenterology & Hepatology, Ministry of Health, State Key Laboratory of Oncogene and Related Gene. Shanghai Institute of Digestive Disease , Shanghai , China
| |
Collapse
|
27
|
Proteomics reveals key proteins participating in growth difference between fall dormant and non-dormant alfalfa in terminal buds. J Proteomics 2017; 173:126-138. [PMID: 29229487 DOI: 10.1016/j.jprot.2017.11.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 11/18/2017] [Accepted: 11/30/2017] [Indexed: 12/14/2022]
Abstract
To explore the molecular mechanism of growth differences between fall dormant (FD) and non-FD alfalfa, we conducted iTRAQ-based quantitative proteomics on terminal buds of Maverick (FD) and Cuf101 (non-FD) cultivars, identified differential abundance protein species (DAPS) and verified expression profiling of certain corresponding mRNA by qRT-PCR. A total of 3872 protein species were annotated. Of the 90 DAPS, 56 and 34 were respectively up- and down-accumulated in Maverick, compared to Cuf101. They were grouped into 35 functional categories and enriched in seven pathways. Of which, auxin polar transport was up-regulated, while phenylpropanoid biosynthesis, pyruvate metabolism and transportation, vitamin B1 synthesis process and flavonoid biosynthesis were down-regulated in Maverick, comparing with Cuf101. In Maverick, mRNA abundances of l-asparaginase, chalcone and stilbene synthase family protein, cinnamyl alcohol dehydrogenase-like protein, thiazole biosynthetic enzyme, pyruvate dehydrogenase E1 beta subunit, and aldo/keto reductase family oxidoreductase were significantly lower at FD than at other stages, and lower than in Cuf101. We also observed opposite mRNA profiles of thiazole biosynthetic enzyme, chalcone and stilbene synthase family protein, pyruvate dehydrogenase E1 beta subunit in both cultivars from summer to autumn. Our results suggest that these DAPS could play important roles in growth difference between FD and non-FD alfalfa. BIOLOGICAL SIGNIFICANCE Up to now, as far as we know, currently the proteins related with the growth differences between FD and non-FD alfalfa cultivars in autumn have not yet been identified in terminal buds. This study identified the protein species expressed in alfalfa terminal buds, selected differentially abundant protein species in terminal buds between Maverick (FD) and Cuf101 (non-FD) cultivars in autumn and identified the important protein species participated in the growth differences. This study lays a foundation for further investigation of the molecular mechanism of the growth differences between FD and non-FD alfalfa and the cultivation of advanced alfalfa cultivars.
Collapse
|
28
|
Che-Othman MH, Millar AH, Taylor NL. Connecting salt stress signalling pathways with salinity-induced changes in mitochondrial metabolic processes in C3 plants. PLANT, CELL & ENVIRONMENT 2017; 40:2875-2905. [PMID: 28741669 DOI: 10.1111/pce.13034] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 06/26/2017] [Accepted: 07/09/2017] [Indexed: 05/12/2023]
Abstract
Salinity exerts a severe detrimental effect on crop yields globally. Growth of plants in saline soils results in physiological stress, which disrupts the essential biochemical processes of respiration, photosynthesis, and transpiration. Understanding the molecular responses of plants exposed to salinity stress can inform future strategies to reduce agricultural losses due to salinity; however, it is imperative that signalling and functional response processes are connected to tailor these strategies. Previous research has revealed the important role that plant mitochondria play in the salinity response of plants. Review of this literature shows that 2 biochemical processes required for respiratory function are affected under salinity stress: the tricarboxylic acid cycle and the transport of metabolites across the inner mitochondrial membrane. However, the mechanisms by which components of these processes are affected or react to salinity stress are still far from understood. Here, we examine recent findings on the signal transduction pathways that lead to adaptive responses of plants to salinity and discuss how they can be involved in and be affected by modulation of the machinery of energy metabolism with attention to the role of the tricarboxylic acid cycle enzymes and mitochondrial membrane transporters in this process.
Collapse
Affiliation(s)
- M Hafiz Che-Othman
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, WA 6009, Australia
- School of Bioscience and Biotechnology, Faculty of Science and Technology, National University of Malaysia, Bangi, Selangor, 43600, Malaysia
| | - A Harvey Millar
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, WA 6009, Australia
| | - Nicolas L Taylor
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, WA 6009, Australia
- Institute of Agriculture, The University of Western Australia, Crawley, Western Australia, WA 6009, Australia
| |
Collapse
|
29
|
Shen JL, Li CL, Wang M, He LL, Lin MY, Chen DH, Zhang W. Mitochondrial pyruvate carrier 1 mediates abscisic acid-regulated stomatal closure and the drought response by affecting cellular pyruvate content in Arabidopsis thaliana. BMC PLANT BIOLOGY 2017; 17:217. [PMID: 29166881 PMCID: PMC5700692 DOI: 10.1186/s12870-017-1175-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 11/13/2017] [Indexed: 05/20/2023]
Abstract
BACKGROUND Stomata are micropores surrounded by pairs of guard cells, and their opening is finely controlled to balance water vapor loss as transpiration and CO2 absorption for photosynthesis. The regulatory signaling network for stomatal movement is complicated, and increasing numbers of new genes have been shown to be involved in this process. Our previous study indicated that a member of the plant putative mitochondrial pyruvate carrier (MPC) family, NRGA1, is a negative regulator of guard cell abscisic acid (ABA) signaling. In this study, we identified novel physiological roles of pyruvate and MPC1, another member of the MPC family, in the regulation of stomatal closure in Arabidopsis. RESULTS Loss-of-function mutants of MPC1 (mpc1) were hypersensitive to ABA-induced stomatal closure and ABA-activated guard cell slow-type anion currents, and showed a reduced rate of water loss upon drought treatment compared with wild-type plants. In contrast, plants overexpressing MPC1 showed a hyposensitive ABA response and increased sensitivity to drought stress. In addition, mpc1 mutants accumulated more pyruvate after drought or ABA treatment. The increased pyruvate content also induced stomatal closure and activated the slow-type anion channels of guard cells, and this process was dependent on the function of RbohD/F NADPH oxidases and reactive oxygen species concentrations in guard cells. CONCLUSIONS Our findings revealed the essential roles of MPC1 and pyruvate in stomatal movement and plant drought resistance.
Collapse
Affiliation(s)
- Jian-Lin Shen
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100 China
| | - Chun-Long Li
- College of Life Science, Jiangsu Normal University, Xuzhou, 221116 China
| | - Mei Wang
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100 China
| | - Li-Long He
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100 China
| | - Min-Yan Lin
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100 China
| | - Dong-Hua Chen
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100 China
| | - Wei Zhang
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100 China
| |
Collapse
|
30
|
Salhi A, Negrão S, Essack M, Morton MJL, Bougouffa S, Razali R, Radovanovic A, Marchand B, Kulmanov M, Hoehndorf R, Tester M, Bajic VB. DES-TOMATO: A Knowledge Exploration System Focused On Tomato Species. Sci Rep 2017; 7:5968. [PMID: 28729549 PMCID: PMC5519719 DOI: 10.1038/s41598-017-05448-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 05/25/2017] [Indexed: 12/29/2022] Open
Abstract
Tomato is the most economically important horticultural crop used as a model to study plant biology and particularly fruit development. Knowledge obtained from tomato research initiated improvements in tomato and, being transferrable to other such economically important crops, has led to a surge of tomato-related research and published literature. We developed DES-TOMATO knowledgebase (KB) for exploration of information related to tomato. Information exploration is enabled through terms from 26 dictionaries and combination of these terms. To illustrate the utility of DES-TOMATO, we provide several examples how one can efficiently use this KB to retrieve known or potentially novel information. DES-TOMATO is free for academic and nonprofit users and can be accessed at http://cbrc.kaust.edu.sa/des_tomato/, using any of the mainstream web browsers, including Firefox, Safari and Chrome.
Collapse
Affiliation(s)
- Adil Salhi
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Saudi Arabia
| | - Sónia Negrão
- King Abdullah University of Science and Technology (KAUST), Division of Biological and Environmental Sciences and Engineering, Thuwal, 23955-6900, Saudi Arabia
| | - Magbubah Essack
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Saudi Arabia
| | - Mitchell J L Morton
- King Abdullah University of Science and Technology (KAUST), Division of Biological and Environmental Sciences and Engineering, Thuwal, 23955-6900, Saudi Arabia
| | - Salim Bougouffa
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Saudi Arabia
| | - Rozaimi Razali
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Saudi Arabia
| | - Aleksandar Radovanovic
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Saudi Arabia
| | | | - Maxat Kulmanov
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Saudi Arabia
| | - Robert Hoehndorf
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Saudi Arabia
- King Abdullah University of Science and Technology (KAUST), Computer, Electrical and Mathematical Sciences and Engineering Division (CEMSE), Thuwal, 23955-6900, Saudi Arabia
| | - Mark Tester
- King Abdullah University of Science and Technology (KAUST), Division of Biological and Environmental Sciences and Engineering, Thuwal, 23955-6900, Saudi Arabia
| | - Vladimir B Bajic
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, 23955-6900, Saudi Arabia.
- King Abdullah University of Science and Technology (KAUST), Computer, Electrical and Mathematical Sciences and Engineering Division (CEMSE), Thuwal, 23955-6900, Saudi Arabia.
| |
Collapse
|
31
|
Wu X, Qiao Z, Liu H, Acharya BR, Li C, Zhang W. CML20, an Arabidopsis Calmodulin-like Protein, Negatively Regulates Guard Cell ABA Signaling and Drought Stress Tolerance. FRONTIERS IN PLANT SCIENCE 2017; 8:824. [PMID: 28603528 PMCID: PMC5445667 DOI: 10.3389/fpls.2017.00824] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 05/02/2017] [Indexed: 05/19/2023]
Abstract
Guard cells shrink in response to drought and abscisic acid (ABA), which is caused by efflux of ions that in turn reduces stomatal aperture and improves the plant's ability to retain moisture. Cytosolic free calcium is an essential secondary messenger in guard cell ABA signaling, but the details of this regulatory pathway remain sketchy. Here, the calmodulin-like protein CML20, which has four EF-hand domains and calcium-binding activity in vitro, was found to be a negative regulator of ABA-induced stomatal movement in Arabidopsis. The guard cells of cml20 loss-of-function mutant plants were hypersensitive to both ABA-activated S-type anion currents, and ABA inhibited inward K+ currents than those of wild type. Additional, due to smaller stomatal aperture, cml20 showed less water loss from the leaves than wild type. These phenotypes of CML20 overexpressing plants contrasted with wild type in the opposite direction. In the cml20 mutant, the transcripts of stress responsive genes, such as MYB2, RAB18, ERD10, COR47, and RD29A were up-regulated in response to drought and ABA, while down-regulated of APX2 transcription and higher reactive oxygen species (ROS) accumulation. These observations support the CML20, a functional Ca2+ sensor, is a negative regulator in guard cell ABA signaling.
Collapse
Affiliation(s)
- Xiaomeng Wu
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong UniversityJinan, China
| | - Zhu Qiao
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong UniversityJinan, China
| | - Huiping Liu
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong UniversityJinan, China
| | - Biswa R. Acharya
- Donald Danforth Plant Science Center, St. LouisMO, United States
| | - Chunlong Li
- College of Life Science, Jiangsu Normal UniversityXuzhou, China
- *Correspondence: Chunlong Li, Wei Zhang,
| | - Wei Zhang
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong UniversityJinan, China
- *Correspondence: Chunlong Li, Wei Zhang,
| |
Collapse
|
32
|
Mostafa I, Yoo MJ, Zhu N, Geng S, Dufresne C, Abou-Hashem M, El-Domiaty M, Chen S. Membrane Proteomics of Arabidopsis Glucosinolate Mutants cyp79B2/B3 and myb28/29. FRONTIERS IN PLANT SCIENCE 2017; 8:534. [PMID: 28443122 PMCID: PMC5387099 DOI: 10.3389/fpls.2017.00534] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 03/24/2017] [Indexed: 05/09/2023]
Abstract
Glucosinolates (Gls) constitute a major group of natural metabolites represented by three major classes (aliphatic, indolic and aromatic) of more than 120 chemical structures. In our previous work, soluble proteins and metabolites in Arabidopsis mutants deficient of aliphatic (myb28/29) and indolic Gls (cyp79B2B3) were analyzed. Here we focus on investigating the changes at the level of membrane proteins in these mutants. Our LC/MS-MS analyses of tandem mass tag (TMT) labeled peptides derived from the cyp79B2/B3 and myb28/29 relative to wild type resulted in the identification of 4,673 proteins, from which 2,171 are membrane proteins. Fold changes and statistical analysis showed 64 increased and 74 decreased in cyp79B2/B3, while 28 increased and 17 decreased in myb28/29. As to the shared protein changes between the mutants, one protein was increased and eight were decreased. Bioinformatics analysis of the changed proteins led to the discovery of three cytochromes in glucosinolate molecular network (GMN): cytochrome P450 86A7 (At1g63710), cytochrome P450 71B26 (At3g26290), and probable cytochrome c (At1g22840). CYP86A7 and CYP71B26 may play a role in hydroxyl-indolic Gls production. In addition, flavone 3'-O-methyltransferase 1 represents an interesting finding as it is likely to participate in the methylation process of the hydroxyl-indolic Gls to form methoxy-indolic Gls. The analysis also revealed additional new nodes in the GMN related to stress and defense activity, transport, photosynthesis, and translation processes. Gene expression and protein levels were found to be correlated in the cyp79B2/B3, but not in the myb28/29.
Collapse
Affiliation(s)
- Islam Mostafa
- Department of Biology, University of FloridaGainesville, FL, USA
- Genetics Institute, University of FloridaGainesville, FL, USA
- Department of Pharmacognosy, Faculty of Pharmacy, Zagazig UniversityZagazig, Egypt
| | - Mi-Jeong Yoo
- Department of Biology, University of FloridaGainesville, FL, USA
- Genetics Institute, University of FloridaGainesville, FL, USA
| | - Ning Zhu
- Department of Biology, University of FloridaGainesville, FL, USA
- Genetics Institute, University of FloridaGainesville, FL, USA
| | - Sisi Geng
- Department of Biology, University of FloridaGainesville, FL, USA
- Genetics Institute, University of FloridaGainesville, FL, USA
- Plant Molecular and Cellular Biology Program, University of FloridaGainesville, FL, USA
| | | | - Maged Abou-Hashem
- Department of Pharmacognosy, Faculty of Pharmacy, Zagazig UniversityZagazig, Egypt
| | - Maher El-Domiaty
- Department of Pharmacognosy, Faculty of Pharmacy, Zagazig UniversityZagazig, Egypt
| | - Sixue Chen
- Department of Biology, University of FloridaGainesville, FL, USA
- Genetics Institute, University of FloridaGainesville, FL, USA
- Plant Molecular and Cellular Biology Program, University of FloridaGainesville, FL, USA
- Interdisciplinary Center for Biotechnology Research, University of FloridaGainesville, FL, USA
- *Correspondence: Sixue Chen
| |
Collapse
|
33
|
Li X, Li Y, Han G, Li X, Ji Y, Fan Z, Zhong Y, Cao J, Zhao J, Mariusz G, Zhang M, Wen J, Nesland JM, Suo Z. Establishment of mitochondrial pyruvate carrier 1 (MPC1) gene knockout mice with preliminary gene function analyses. Oncotarget 2016; 7:79981-79994. [PMID: 27835892 PMCID: PMC5346765 DOI: 10.18632/oncotarget.13210] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 10/19/2016] [Indexed: 12/27/2022] Open
Abstract
Pyruvate plays a critical role in the mitochondrial tricarboxylic acid (TCA) cycle, and it is the center product for the synthesis of amino acids, carbohydrates and fatty acids. Pyruvate transported across the inner mitochondrial membrane appears to be essential in anabolic and catabolic intermediary metabolism. The mitochondrial pyruvate carrier (MPC) mounted in the inner membrane of mitochondria serves as the channel to facilitate pyruvate permeating. In mammals, the MPC is formed by two paralogous subunits, MPC1 and MPC2. It is known that complete ablation of MPC2 in mice causes death on the 11th or 12th day of the embryonic period. However, MPC1 deletion and the knowledge of gene function in vivo are lacking. Using the new technology of gene manipulation known as Clustered Regularly Interspaced Short Palindromic Repeats/CRISPR-associated 9 (CRISPR/Cas9) systems, we gained stable MPC1 gene heterozygous mutation mice models, and the heterozygous mutations could be stably maintained in their offsprings. Only one line with homozygous 27 bases deletion in the first exon was established, but no offsprings could be obtained after four months of mating experiments, indicating infertility of the mice with such homozygous deletion. The other line of MPC1 knockout (KO) mice was only heterozygous, which mutated in the first exon with a terminator shortly afterwards. These two lines of MPC1 KO mice showed lower fertility and significantly higher bodyweight in the females. We concluded that heterozygous MPC1 KO weakens fertility and influences the metabolism of glucose and fatty acid and bodyweight in mice.
Collapse
Affiliation(s)
- Xiaoli Li
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
- Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Montebello, Oslo, Norway
| | - Yaqing Li
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
- Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Montebello, Oslo, Norway
| | - Gaoyang Han
- Department of Thoracic Surgery, The First Affiliated Hospital of Xinxiang Medical University, Weihui City, Henan Province, China
| | - Xiaoran Li
- Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Montebello, Oslo, Norway
| | - Yasai Ji
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Zhirui Fan
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Yali Zhong
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Jing Cao
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
- Department of Pathology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Jing Zhao
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Goscinski Mariusz
- Department of Surgery, The Norwegian Radium Hospital, Oslo University Hospital, Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Norway
| | - Mingzhi Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Jianguo Wen
- The Institute of Clinical Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Jahn M. Nesland
- Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Montebello, Oslo, Norway
| | - Zhenhe Suo
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
- Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Montebello, Oslo, Norway
| |
Collapse
|
34
|
Sayed MA, Umekawa Y, Ito K. Metabolic interplay between cytosolic phosphoenolpyruvate carboxylase and mitochondrial alternative oxidase in thermogenic skunk cabbage, Symplocarpus renifolius. PLANT SIGNALING & BEHAVIOR 2016; 11:e1247138. [PMID: 27739913 PMCID: PMC5157899 DOI: 10.1080/15592324.2016.1247138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 10/05/2016] [Accepted: 10/05/2016] [Indexed: 06/06/2023]
Abstract
Skunk cabbage (Symplocarpus renifolius) blooms in early spring and its inflorescence, referred to as the spadix, can produce enough heat to melt snow. Here, we investigated glycolytic carbon flow at the PEP branch-point in thermogenic spadices. Our analyses revealed that petals and pistils in thermogenic florets exhibited higher expression of SrPEPC and SrAOX transcripts than those of SrPK, SrPEPCK, and SrPEPtase. Moreover, enzymatic analyses showed high activities of PEPC in the extracts from thermogenic florets. Finally, mitochondria from thermogenic florets showed low respiratory activities when pyruvate was used as a substrate, although a significant malate-mediated cyanide-insensitive respiration was observed. Collectively, these results suggest that PEP metabolism, primarily catabolized by PEPC, plays a critical role in thermogenesis in S. renifolius.
Collapse
Affiliation(s)
- Md. Abu Sayed
- United Graduate School of Agricultural Science, Iwate University, Ueda, Morioka, Iwate, Japan
| | - Yui Umekawa
- United Graduate School of Agricultural Science, Iwate University, Ueda, Morioka, Iwate, Japan
| | - Kikukatsu Ito
- United Graduate School of Agricultural Science, Iwate University, Ueda, Morioka, Iwate, Japan
- Cryobiofrontier Research Center, Faculty of Agriculture, Iwate University, Ueda, Morioka, Iwate, Japan
| |
Collapse
|
35
|
Lee CP, Millar AH. The Plant Mitochondrial Transportome: Balancing Metabolic Demands with Energetic Constraints. TRENDS IN PLANT SCIENCE 2016; 21:662-676. [PMID: 27162080 DOI: 10.1016/j.tplants.2016.04.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 03/25/2016] [Accepted: 04/04/2016] [Indexed: 06/05/2023]
Abstract
In plants, mitochondrial function is associated with hundreds of metabolic reactions. To facilitate these reactions, charged substrates and cofactors move across the charge-impermeable inner mitochondrial membrane via specialized transporters and must work cooperatively with the electrochemical gradient which is essential for mitochondrial function. The regulatory framework for mitochondrial metabolite transport is expected to be more complex in plants than in mammals owing to the close metabolic association between mitochondrial, plastids, and peroxisome metabolism, as well as to the major diurnal fluctuations in plant metabolic function. We propose here how recent advances can be integrated towards defining the mitochondrial transportome in plants. We also discuss what this reveals about sustaining cooperativity between bioenergetics, metabolism, and transport in typical and challenging environments.
Collapse
Affiliation(s)
- Chun Pong Lee
- Australian Reseach Council (ARC) Centre of Excellence in Plant Energy Biology, The University of Western Australia, 35 Stirling Highway, Crawley 6009, Australia
| | - A Harvey Millar
- Australian Reseach Council (ARC) Centre of Excellence in Plant Energy Biology, The University of Western Australia, 35 Stirling Highway, Crawley 6009, Australia.
| |
Collapse
|
36
|
Furumoto T. Pyruvate transport systems in organelles: future directions in C4 biology research. CURRENT OPINION IN PLANT BIOLOGY 2016; 31:143-8. [PMID: 27153467 DOI: 10.1016/j.pbi.2016.04.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 03/27/2016] [Accepted: 04/14/2016] [Indexed: 05/25/2023]
Abstract
Pyruvate is a central metabolite that must be imported into organelles for specific metabolic processes, including C4 photosynthesis. Plastidial and mitochondrial pyruvate transporter molecules were recently identified: the former was found based on C4 photosynthesis transcriptome analysis and the latter using a bioinformatics approach in yeast. The transport activities of these molecules were recently investigated in heterologous expression systems: Escherichia coli and Lactococcus lactis, respectively. These studies demonstrated the important roles of the NHD1/Bass2-protein coupling function and the mitochondria pyruvate carrier protein complex in pyruvate uptake. Here, I summarize the approaches used to isolate these proteins and the issues that remain to be investigated.
Collapse
Affiliation(s)
- Tsuyoshi Furumoto
- Faculty of Agriculture, Ryukoku University, 1-5, Yokotani, Oe-cho, Seta, Otsu, Shiga 520-2194, Japan.
| |
Collapse
|
37
|
Berkowitz O, De Clercq I, Van Breusegem F, Whelan J. Interaction between hormonal and mitochondrial signalling during growth, development and in plant defence responses. PLANT, CELL & ENVIRONMENT 2016; 39:1127-39. [PMID: 26763171 DOI: 10.1111/pce.12712] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 12/22/2015] [Accepted: 12/30/2015] [Indexed: 05/23/2023]
Abstract
Mitochondria play a central role in plant metabolism as they are a major source of ATP through synthesis by the oxidative phosphorylation pathway and harbour key metabolic reactions such as the TCA cycle. The energy and building blocks produced by mitochondria are essential to drive plant growth and development as well as to provide fuel for responses to abiotic and biotic stresses. The majority of mitochondrial proteins are encoded in the nuclear genome and have to be imported into the organelle. For the regulation of the corresponding genes intricate signalling pathways exist to adjust their expression. Signals directly regulate nuclear gene expression (anterograde signalling) to adjust the protein composition of the mitochondria to the needs of the cell. In parallel, mitochondria communicate back their functional status to the nucleus (retrograde signalling) to prompt transcriptional regulation of responsive genes via largely unknown signalling mechanisms. Plant hormones are the major signalling components regulating all layers of plant development and cellular functions. Increasing evidence is now becoming available that plant hormones are also part of signalling networks controlling mitochondrial function and their biogenesis. This review summarizes recent advances in understanding the interaction of mitochondrial and hormonal signalling pathways.
Collapse
Affiliation(s)
- Oliver Berkowitz
- Department of Animal, Plant and Soil Sciences, ARC Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria, 3086, Australia
| | - Inge De Clercq
- Department of Animal, Plant and Soil Sciences, ARC Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria, 3086, Australia
- Department of Plant Systems Biology, VIB, Technologiepark 927, B-9052, Gent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, B-9052, Gent, Belgium
| | - Frank Van Breusegem
- Department of Plant Systems Biology, VIB, Technologiepark 927, B-9052, Gent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, B-9052, Gent, Belgium
| | - James Whelan
- Department of Animal, Plant and Soil Sciences, ARC Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, Victoria, 3086, Australia
| |
Collapse
|
38
|
Qiao Z, Li CL, Zhang W. WRKY1 regulates stomatal movement in drought-stressed Arabidopsis thaliana. PLANT MOLECULAR BIOLOGY 2016; 91:53-65. [PMID: 26820136 DOI: 10.1007/s11103-016-0441-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 01/16/2016] [Indexed: 05/19/2023]
Abstract
A key response of plants to moisture stress is stomatal closure, a process mediated by the phytohormone abscisic acid (ABA). Closure is affected by changes in the turgor of the stomatal guard cell. The transcription factor WRKY1 is a part of the regulatory machinery underlying stomatal movements, and through this, in the plant's response to drought stress. The loss-of-function T-DNA insertion mutant wrky1 was particularly sensitive to ABA, with respect to both ion channel regulation and stomatal movements, and less sensitive to drought than the wild type. Complementation of the wrky1 mutant resulted in the recovery of the wild type phenotype. The WRKY1 product localized to the nucleus, and was shown able to bind to the W-box domain in the promoters of MYB2, ABCG40, DREB1A and ABI5, and thereby to control their transcription in response to drought stress or ABA treatment. WRKY1 is thought to act as a negative regulator in guard cell ABA signalling.
Collapse
Affiliation(s)
- Zhu Qiao
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China
| | - Chun-Long Li
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China
| | - Wei Zhang
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China.
| |
Collapse
|
39
|
Štáfková J, Mach J, Biran M, Verner Z, Bringaud F, Tachezy J. Mitochondrial pyruvate carrier in Trypanosoma brucei. Mol Microbiol 2016; 100:442-56. [PMID: 26748989 DOI: 10.1111/mmi.13325] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2016] [Indexed: 12/30/2022]
Abstract
Pyruvate is a key product of glycolysis that regulates the energy metabolism of cells. In Trypanosoma brucei, the causative agent of sleeping sickness, the fate of pyruvate varies dramatically during the parasite life cycle. In bloodstream forms, pyruvate is mainly excreted, whereas in tsetse fly forms, pyruvate is metabolized in mitochondria yielding additional ATP molecules. The character of the molecular machinery that mediates pyruvate transport across mitochondrial membrane was elusive until the recent discovery of mitochondrial pyruvate carrier (MPC) in yeast and mammals. Here, we characterized pyruvate import into mitochondrion of T. brucei. We identified mpc1 and mpc2 homologs in the T. brucei genome with attributes of MPC protein family and we demonstrated that both proteins are present in the mitochondrial membrane of the parasite. Investigations of mpc1 or mpc2 gene knock-out cells proved that T. brucei MPC1/2 proteins facilitate mitochondrial pyruvate transport. Interestingly, MPC is expressed not only in procyclic trypanosomes with fully activated mitochondria but also in bloodstream trypanosomes in which most of pyruvate is excreted. Moreover, MPC appears to be essential for bloodstream forms, supporting the recently emerging picture that the functions of mitochondria in bloodstream forms are more diverse than it was originally thought.
Collapse
Affiliation(s)
- Jitka Štáfková
- Department of Parasitology, Faculty of Science, Charles University in Prague, Czech Republic
| | - Jan Mach
- Department of Parasitology, Faculty of Science, Charles University in Prague, Czech Republic
| | - Marc Biran
- Centre de Résonance Magnétique des Systèmes Biologiques (RMSB), UMR5536 CNRS
| | - Zdeněk Verner
- Department of Parasitology, Faculty of Science, Charles University in Prague, Czech Republic
| | - Frédéric Bringaud
- Centre de Résonance Magnétique des Systèmes Biologiques (RMSB), UMR5536 CNRS.,Laboratoire de Microbiologie Fondamentale et Pathogénicité (MFP), UMR5234 CNRS, Université de Bordeaux, Bordeaux, France
| | - Jan Tachezy
- Department of Parasitology, Faculty of Science, Charles University in Prague, Czech Republic
| |
Collapse
|
40
|
Li CL, Wang M, Wu XM, Chen DH, Lv HJ, Shen JL, Qiao Z, Zhang W. THI1, a Thiamine Thiazole Synthase, Interacts with Ca2+-Dependent Protein Kinase CPK33 and Modulates the S-Type Anion Channels and Stomatal Closure in Arabidopsis. PLANT PHYSIOLOGY 2016; 170:1090-104. [PMID: 26662273 PMCID: PMC4734576 DOI: 10.1104/pp.15.01649] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 12/09/2015] [Indexed: 05/06/2023]
Abstract
Thiamine is required for both plant growth and development. Here, the involvement of a thiamine thiazole synthase, THI1, has been demonstrated in both guard cell abscisic acid (ABA) signaling and the drought response in Arabidopsis (Arabidopsis thaliana). THI1 overexpressors proved to be more sensitive to ABA than the wild type with respect to both the activation of guard cell slow type anion channels and stomatal closure; this effectively reduced the rate of water loss from the plant and thereby enhanced its level of drought tolerance. A yeast two-hybrid strategy was used to screen a cDNA library from epidermal strips of leaves for THI1 regulatory factors, and identified CPK33, a Ca(2+)-dependent protein kinase, as interactor with THI1 in a plasma membrane-delimited manner. Loss-of-function cpk33 mutants were hypersensitive to ABA activation of slow type anion channels and ABA-induced stomatal closure, while the CPK33 overexpression lines showed opposite phenotypes. CPK33 kinase activity was essential for ABA-induced stomatal closure. Consistent with their contrasting regulatory role over stomatal closure, THI1 suppressed CPK33 kinase activity in vitro. Together, our data reveal a novel regulatory role of thiamine thiazole synthase to kinase activity in guard cell signaling.
Collapse
Affiliation(s)
- Chun-Long Li
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China
| | - Mei Wang
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China
| | - Xiao-Meng Wu
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China
| | - Dong-Hua Chen
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China
| | - Hong-Jun Lv
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China
| | - Jian-Lin Shen
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China
| | - Zhu Qiao
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China
| | - Wei Zhang
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Science, Shandong University, Jinan, 250100, China
| |
Collapse
|
41
|
Boudichevskaia A, Heckwolf M, Kaldenhoff R. T-DNA insertion in aquaporin gene AtPIP1;2 generates transcription profiles reminiscent of a low CO2 response. PLANT, CELL & ENVIRONMENT 2015; 38:2286-2298. [PMID: 25850563 DOI: 10.1111/pce.12547] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 03/22/2015] [Indexed: 06/04/2023]
Abstract
Results from CO2 diffusion studies and characterization of Arabidopsis thaliana aquaporin AtPIP1;2 T-DNA insertion lines support the idea that specific aquaporins facilitate the diffusion of CO2 through biological membranes. However, their function as CO2 diffusion facilitators in plant physiology is still a matter of debate. Assuming that a lack of AtPIP1;2 causes a characteristic transcriptional response, we compared data from a AtPIP1;2 T-DNA insertion line obtained by Illumina sequencing, Affymetrix chip analysis and quantitative RT-PCR to the transcriptome of plants grown under drought stress or under low CO2 conditions. The plant reaction to the deficit of AtPIP1;2 was unlike drought stress responses but comparable with that of low CO2 conditions. In addition, we observed a phenotype characteristic to plants grown under low CO2 . The findings support the hypothesis that the AtPIP1;2 function in plant physiology is not to facilitate water but CO2 diffusion.
Collapse
Affiliation(s)
| | - Marlies Heckwolf
- Applied Plant Science, Darmstadt University of Technology, Darmstadt, D-64287, Germany
- Department of Energy Great Lakes Bioenergy Research Center, Department of Agronomy, University of Wisconsin, Madison, WI, 53703, USA
| | - Ralf Kaldenhoff
- Applied Plant Science, Darmstadt University of Technology, Darmstadt, D-64287, Germany
| |
Collapse
|
42
|
Misra BB, Acharya BR, Granot D, Assmann SM, Chen S. The guard cell metabolome: functions in stomatal movement and global food security. FRONTIERS IN PLANT SCIENCE 2015; 6:334. [PMID: 26042131 PMCID: PMC4436583 DOI: 10.3389/fpls.2015.00334] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Accepted: 04/28/2015] [Indexed: 05/06/2023]
Abstract
Guard cells represent a unique single cell-type system for the study of cellular responses to abiotic and biotic perturbations that affect stomatal movement. Decades of effort through both classical physiological and functional genomics approaches have generated an enormous amount of information on the roles of individual metabolites in stomatal guard cell function and physiology. Recent application of metabolomics methods has produced a substantial amount of new information on metabolome control of stomatal movement. In conjunction with other "omics" approaches, the knowledge-base is growing to reach a systems-level description of this single cell-type. Here we summarize current knowledge of the guard cell metabolome and highlight critical metabolites that bear significant impact on future engineering and breeding efforts to generate plants/crops that are resistant to environmental challenges and produce high yield and quality products for food and energy security.
Collapse
Affiliation(s)
- Biswapriya B. Misra
- Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL, USA
| | | | - David Granot
- Department of Vegetable Research, Institute of Plant Sciences, Agricultural Research Organization, Bet-Dagan, Israel
| | | | - Sixue Chen
- Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL, USA
- Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL, USA
| |
Collapse
|
43
|
Vanderperre B, Bender T, Kunji ERS, Martinou JC. Mitochondrial pyruvate import and its effects on homeostasis. Curr Opin Cell Biol 2015; 33:35-41. [DOI: 10.1016/j.ceb.2014.10.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 10/30/2014] [Accepted: 10/31/2014] [Indexed: 12/15/2022]
|
44
|
Bender T, Pena G, Martinou JC. Regulation of mitochondrial pyruvate uptake by alternative pyruvate carrier complexes. EMBO J 2015; 34:911-24. [PMID: 25672363 DOI: 10.15252/embj.201490197] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 01/22/2015] [Indexed: 11/09/2022] Open
Abstract
At the pyruvate branch point, the fermentative and oxidative metabolic routes diverge. Pyruvate can be transformed either into lactate in mammalian cells or into ethanol in yeast, or transported into mitochondria to fuel ATP production by oxidative phosphorylation. The recently discovered mitochondrial pyruvate carrier (MPC), encoded by MPC1, MPC2, and MPC3 in yeast, is required for uptake of pyruvate into the organelle. Here, we show that while expression of Mpc1 is not dependent on the carbon source, expression of Mpc2 and Mpc3 is specific to fermentative or respiratory conditions, respectively. This gives rise to two alternative carrier complexes that we have termed MPCFERM and MPCOX. By constitutively expressing the two alternative complexes in yeast deleted for all three endogenous genes, we show that MPCOX has a higher transport activity than MPCFERM, which is dependent on the C-terminus of Mpc3. We propose that the alternative MPC subunit expression in yeast provides a way of adapting cellular metabolism to the nutrient availability.
Collapse
Affiliation(s)
- Tom Bender
- Department of Cell Biology, University of Geneva, Genève, Switzerland
| | - Gabrielle Pena
- Department of Cell Biology, University of Geneva, Genève, Switzerland
| | | |
Collapse
|
45
|
A role for the mitochondrial pyruvate carrier as a repressor of the Warburg effect and colon cancer cell growth. Mol Cell 2014; 56:400-413. [PMID: 25458841 DOI: 10.1016/j.molcel.2014.09.026] [Citation(s) in RCA: 259] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 08/08/2014] [Accepted: 09/25/2014] [Indexed: 12/15/2022]
Abstract
Cancer cells are typically subject to profound metabolic alterations, including the Warburg effect wherein cancer cells oxidize a decreased fraction of the pyruvate generated from glycolysis. We show herein that the mitochondrial pyruvate carrier (MPC), composed of the products of the MPC1 and MPC2 genes, modulates fractional pyruvate oxidation. MPC1 is deleted or underexpressed in multiple cancers and correlates with poor prognosis. Cancer cells re-expressing MPC1 and MPC2 display increased mitochondrial pyruvate oxidation, with no changes in cell growth in adherent culture. MPC re-expression exerted profound effects in anchorage-independent growth conditions, however, including impaired colony formation in soft agar, spheroid formation, and xenograft growth. We also observed a decrease in markers of stemness and traced the growth effects of MPC expression to the stem cell compartment. We propose that reduced MPC activity is an important aspect of cancer metabolism, perhaps through altering the maintenance and fate of stem cells.
Collapse
|
46
|
Yu Y, Assmann SM. Metabolite transporter regulation of ABA function and guard cell response. MOLECULAR PLANT 2014; 7:1505-7. [PMID: 25173402 DOI: 10.1093/mp/ssu093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Affiliation(s)
- Yunqing Yu
- Biology Department, Pennsylvania State University, 208 Mueller Laboratory, University Park, PA 16802-5301, USA
| | - Sarah M Assmann
- Biology Department, Pennsylvania State University, 208 Mueller Laboratory, University Park, PA 16802-5301, USA
| |
Collapse
|
47
|
|
48
|
Wang M, Ma X, Shen J, Li C, Zhang W. The ongoing story: the mitochondria pyruvate carrier 1 in plant stress response in Arabidopsis. PLANT SIGNALING & BEHAVIOR 2014; 9:e973810. [PMID: 25482773 PMCID: PMC4623219 DOI: 10.4161/15592324.2014.973810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Abscisic acid (ABA) is an important regulator of guard cell ion channels and stomatal movements in response to drought stress. Pyruvate is the final product of glycolysis in the cytosol, and could be transported by mitochondrial pyruvate carriers (MPCs) into mitochondrion for consequent cellular substance and energy metabolism. We recently characterized the first putative mitochondrial pyruvate carrier, NRGA1, in planta, and found that this small protein is involved in the negative regulation of drought and ABA induced guard cell signaling in Arabidopsis thaliana. The findings revealed a probable link between mitochondrial pyruvate transport and guard cell signaling. It has also been shown that NRGA1 protein product was directed to the mitochondria, and co-expression of MPC1 and NRGA1 functionally complement the absence of a native pyruvate transport protein in yeast. Here, we further demonstrated that MPC1 showed similar sub-cellular localization pattern to NRGA1. Quantitative RT-PCR analysis showed that the transcription of both NRGA1 and MPC1 were induced by pyruvate or ABA, and pyruvate strengthened the ABA induced transcription of these 2 genes. The similarity in subcellular localization and gene expression to ABA strongly suggests that MPC1 may associate with NRGA1 for mitochondrial pyruvate transport and is involved in ABA mediated stomatal movements in Arabidopsis.
Collapse
Affiliation(s)
- Mei Wang
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation; Ministry of Education; School of Life Science; Shandong University; Jinan, China
| | - Xiaoyan Ma
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation; Ministry of Education; School of Life Science; Shandong University; Jinan, China
| | - Jianlin Shen
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation; Ministry of Education; School of Life Science; Shandong University; Jinan, China
| | - Chunlong Li
- Key Laboratory of Plant Cell Engineering and Germplasm Innovation; Ministry of Education; School of Life Science; Shandong University; Jinan, China
| | | |
Collapse
|