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Wu R, Liu Z, Sun S, Qin A, Liu H, Zhou Y, Li W, Liu Y, Hu M, Yang J, Rochaix JD, An G, Herrera-Estrella L, Tran LSP, Sun X. Identification of bZIP Transcription Factors That Regulate the Development of Leaf Epidermal Cells in Arabidopsis thaliana by Single-Cell RNA Sequencing. Int J Mol Sci 2024; 25:2553. [PMID: 38473801 DOI: 10.3390/ijms25052553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/17/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
Epidermal cells are the main avenue for signal and material exchange between plants and the environment. Leaf epidermal cells primarily include pavement cells, guard cells, and trichome cells. The development and distribution of different epidermal cells are tightly regulated by a complex transcriptional regulatory network mediated by phytohormones, including jasmonic acid, and transcription factors. How the fate of leaf epidermal cells is determined, however, is still largely unknown due to the diversity of cell types and the complexity of their regulation. Here, we characterized the transcriptional profiles of epidermal cells in 3-day-old true leaves of Arabidopsis thaliana using single-cell RNA sequencing. We identified two genes encoding BASIC LEUCINE-ZIPPER (bZIP) transcription factors, namely bZIP25 and bZIP53, which are highly expressed in pavement cells and early-stage meristemoid cells. Densities of pavement cells and trichome cells were found to increase and decrease, respectively, in bzip25 and bzip53 mutants, compared with wild-type plants. This trend was more pronounced in the presence of jasmonic acid, suggesting that these transcription factors regulate the development of trichome cells and pavement cells in response to jasmonic acid.
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Affiliation(s)
- Rui Wu
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Zhixin Liu
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Susu Sun
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Aizhi Qin
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Hao Liu
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Yaping Zhou
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Weiqiang Li
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Yumeng Liu
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Mengke Hu
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Jincheng Yang
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Jean-David Rochaix
- Departments of Molecular Biology and Plant Biology, University of Geneva, 1211 Geneva, Switzerland
| | - Guoyong An
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
| | - Luis Herrera-Estrella
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA
| | - Lam-Son Phan Tran
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA
| | - Xuwu Sun
- National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, 85 Minglun Street, Kaifeng 475001, China
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Hu Y, Li C, Zhou R, Song Y, Lv Z, Wang Q, Dong X, Liu S, Feng C, Zhou Y, Zeng X, Zhang L, Wang Z, Di H. The Transcription Factor ZmNAC89 Gene Is Involved in Salt Tolerance in Maize ( Zea mays L.). Int J Mol Sci 2023; 24:15099. [PMID: 37894780 PMCID: PMC10606073 DOI: 10.3390/ijms242015099] [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: 09/05/2023] [Revised: 10/03/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
The NAC gene family has transcription factors specific to plants, which are involved in development and stress response and adaptation. In this study, ZmNAC89, an NAC gene in maize that plays a role in saline-alkaline tolerance, was isolated and characterized. ZmNAC89 was localized in the nucleus and had transcriptional activation activity during in vitro experiments. The expression of ZmNAC89 was strongly upregulated under saline-alkaline, drought and ABA treatments. Overexpression of the ZmNAC89 gene in transgenic Arabidopsis and maize enhanced salt tolerance at the seedling stage. Differentially expressed genes (DEGs) were then confirmed via RNA-sequencing analysis with the transgenic maize line. GO analyses showed that oxidation-reduction process-regulated genes were involved in ZmNAC89-mediated salt-alkaline stress. ZmNAC89 may regulate maize saline-alkali tolerance through the REDOX pathway and ABA signal transduction pathway. From 140 inbred maize lines, 20 haplotypes and 16 SNPs were found in the coding region of the ZmNAC89 gene, including the excellent haplotype HAP20. These results contribute to a better understanding of the response mechanism of maize to salt-alkali stress and marker-assisted selection during maize breeding.
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Affiliation(s)
- Yingying Hu
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Chunxiang Li
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Runyu Zhou
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Yongfeng Song
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Zhichao Lv
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Qi Wang
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Xiaojie Dong
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
- Institute of Crop Resources Research, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
| | - Shan Liu
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Chenchen Feng
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Yu Zhou
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Xing Zeng
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Lin Zhang
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Zhenhua Wang
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
| | - Hong Di
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China; (Y.H.); (C.L.); (R.Z.); (Y.S.); (Z.L.); (Q.W.); (X.D.); (S.L.); (C.F.); (Y.Z.); (X.Z.); (L.Z.)
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Zhang T, Peng JT, Klair A, Dickinson AJ. Non-canonical and developmental roles of the TCA cycle in plants. CURRENT OPINION IN PLANT BIOLOGY 2023; 74:102382. [PMID: 37210789 PMCID: PMC10524895 DOI: 10.1016/j.pbi.2023.102382] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 04/11/2023] [Accepted: 04/18/2023] [Indexed: 05/23/2023]
Abstract
Over recent years, our understanding of the tricarboxylic acid cycle (TCAC) in living organisms has expanded beyond its canonical role in cellular energy production. In plants, TCAC metabolites and related enzymes have important roles in physiology, including vacuolar function, chelation of metals and nutrients, photorespiration, and redox regulation. Research in other organisms, including animals, has demonstrated unexpected functions of the TCAC metabolites in a number of biological processes, including signaling, epigenetic regulation, and cell differentiation. Here, we review the recent progress in discovery of non-canonical roles of the TCAC. We then discuss research on these metabolites in the context of plant development, with a focus on research related to tissue-specific functions of the TCAC. Additionally, we review research describing connections between TCAC metabolites and phytohormone signaling pathways. Overall, we discuss the opportunities and challenges in discovering new functions of TCAC metabolites in plants.
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Affiliation(s)
- Tao Zhang
- Cell and Developmental Biology, University of California San Diego, La Jolla, CA, USA
| | - Jesus T Peng
- Cell and Developmental Biology, University of California San Diego, La Jolla, CA, USA
| | - Amman Klair
- Cell and Developmental Biology, University of California San Diego, La Jolla, CA, USA
| | - Alexandra J Dickinson
- Cell and Developmental Biology, University of California San Diego, La Jolla, CA, USA.
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Le XH, Millar AH. The diversity of substrates for plant respiration and how to optimize their use. PLANT PHYSIOLOGY 2023; 191:2133-2149. [PMID: 36573332 PMCID: PMC10069909 DOI: 10.1093/plphys/kiac599] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 12/09/2022] [Indexed: 06/18/2023]
Abstract
Plant respiration is a foundational biological process with the potential to be optimized to improve crop yield. To understand and manipulate the outputs of respiration, the inputs of respiration-respiratory substrates-need to be probed in detail. Mitochondria house substrate catabolic pathways and respiratory machinery, so transport into and out of these organelles plays an important role in committing substrates to respiration. The large number of mitochondrial carriers and catabolic pathways that remain unidentified hinder this process and lead to confusion about the identity of direct and indirect respiratory substrates in plants. The sources and usage of respiratory substrates vary and are increasing found to be highly regulated based on cellular processes and environmental factors. This review covers the use of direct respiratory substrates following transport through mitochondrial carriers and catabolism under normal and stressed conditions. We suggest the introduction of enzymes not currently found in plant mitochondria to enable serine and acetate to be direct respiratory substrates in plants. We also compare respiratory substrates by assessing energetic yields, availability in cells, and their full or partial oxidation during cell catabolism. This information can assist in decisions to use synthetic biology approaches to alter the range of respiratory substrates in plants. As a result, respiration could be optimized by introducing, improving, or controlling specific mitochondrial transporters and mitochondrial catabolic pathways.
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Affiliation(s)
- Xuyen H Le
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth 6009, Australia
- The ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, 35 Stirling Highway, Crawley, Perth 6009, Australia
| | - A Harvey Millar
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth 6009, Australia
- The ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, 35 Stirling Highway, Crawley, Perth 6009, Australia
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Vargas J, Gómez I, Vidal EA, Lee CP, Millar AH, Jordana X, Roschzttardtz H. Growth Developmental Defects of Mitochondrial Iron Transporter 1 and 2 Mutants in Arabidopsis in Iron Sufficient Conditions. PLANTS (BASEL, SWITZERLAND) 2023; 12:1176. [PMID: 36904036 PMCID: PMC10007191 DOI: 10.3390/plants12051176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/25/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Iron is the most abundant micronutrient in plant mitochondria, and it has a crucial role in biochemical reactions involving electron transfer. It has been described in Oryza sativa that Mitochondrial Iron Transporter (MIT) is an essential gene and that knockdown mutant rice plants have a decreased amount of iron in their mitochondria, strongly suggesting that OsMIT is involved in mitochondrial iron uptake. In Arabidopsis thaliana, two genes encode MIT homologues. In this study, we analyzed different AtMIT1 and AtMIT2 mutant alleles, and no phenotypic defects were observed in individual mutant plants grown in normal conditions, confirming that neither AtMIT1 nor AtMIT2 are individually essential. When we generated crosses between the Atmit1 and Atmit2 alleles, we were able to isolate homozygous double mutant plants. Interestingly, homozygous double mutant plants were obtained only when mutant alleles of Atmit2 with the T-DNA insertion in the intron region were used for crossings, and in these cases, a correctly spliced AtMIT2 mRNA was generated, although at a low level. Atmit1 Atmit2 double homozygous mutant plants, knockout for AtMIT1 and knockdown for AtMIT2, were grown and characterized in iron-sufficient conditions. Pleiotropic developmental defects were observed, including abnormal seeds, an increased number of cotyledons, a slow growth rate, pinoid stems, defects in flower structures, and reduced seed set. A RNA-Seq study was performed, and we could identify more than 760 genes differentially expressed in Atmit1 Atmit2. Our results show that Atmit1 Atmit2 double homozygous mutant plants misregulate genes involved in iron transport, coumarin metabolism, hormone metabolism, root development, and stress-related response. The phenotypes observed, such as pinoid stems and fused cotyledons, in Atmit1 Atmit2 double homozygous mutant plants may suggest defects in auxin homeostasis. Unexpectedly, we observed a possible phenomenon of T-DNA suppression in the next generation of Atmit1 Atmit2 double homozygous mutant plants, correlating with increased splicing of the AtMIT2 intron containing the T-DNA and the suppression of the phenotypes observed in the first generation of the double mutant plants. In these plants with a suppressed phenotype, no differences were observed in the oxygen consumption rate of isolated mitochondria; however, the molecular analysis of gene expression markers, AOX1a, UPOX, and MSM1, for mitochondrial and oxidative stress showed that these plants express a degree of mitochondrial perturbation. Finally, we could establish by a targeted proteomic analysis that a protein level of 30% of MIT2, in the absence of MIT1, is enough for normal plant growth under iron-sufficient conditions.
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Affiliation(s)
- Joaquín Vargas
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Isabel Gómez
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Elena A. Vidal
- ANID-Millennium Science Initiative Program-Millennium Institute for Integrative Biology (iBio), Santiago 8331150, Chile
- Centro de Genómica y Bioinformática, Facultad de Ciencias, Ingeniería y Tecnología, Universidad Mayor, Santiago 8580745, Chile
- Escuela de Biotecnología, Facultad de Ciencias, Ingeniería y Tecnología, Universidad Mayor, Santiago 8580745, Chile
| | - Chun Pong Lee
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, The University of Western Australia, Bayliss Building M316, Crawley, WA 6009, Australia
| | - A. Harvey Millar
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, The University of Western Australia, Bayliss Building M316, Crawley, WA 6009, Australia
| | - Xavier Jordana
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Hannetz Roschzttardtz
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
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Transcriptomic insights into the effects of abscisic acid on the germination of Magnolia sieboldii K. Koch seed. Gene 2023; 853:147066. [PMID: 36455787 DOI: 10.1016/j.gene.2022.147066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 11/07/2022] [Accepted: 11/18/2022] [Indexed: 11/30/2022]
Abstract
Magnolia sieboldii K. Koch is a deciduous tree species. However, the wild resource of M. sieboldii has been declining due to excessive utilization and seed dormancy. In our previous research, M. sieboldii seeds have morphophysiological dormancy and low germination rates under natural conditions. The aim of the present study was to identify the genes involved in dormancy maintenance. In this study, the germination percentage of M. sieboldii seeds negatively correlated with the content of endogenous abscisic acid (ABA). The hydration of seeds for germination showed three distinct phases. Five key time points were identified: 0 h imbibition (dry seed, GZ), 0 day after imbibition (DAI), 16 DAI, 40 DAI, and 56 DAI. The comprehensive transcript profiles of M. sieboldii seeds treated with ABA and water at the five key germinating stages were obtained. A total of 9641 differentially expressed genes (DEGs) were identified, and 208 and 197 common DEGs were found throughout the ABA and water treatments, respectively. Compared with that in the GZ, 518, 696, 2133, and 1535 DEGs were identified in the SH group at 0, 16, 40 and 56 DAI, respectively. 666, 1725, 1560 and 1415 DEGs were identified in the ABA group at 0, 16, 40, and 56 DAI, respectively. Among the identified DEGs, 12 722 were annotated with GO terms, the top three enriched GO terms were different among the DEGs at 56 DAI in the ABA vs. SH treatments. KEGG pathway enrichment analysis for DEGs indicated that oxidative phosphorylation, protein processing in endoplasmic reticulum, starch and sucrose metabolism play an important role in seed response to ABA. 1926 TFs are obtained and classified into 72 families from the M. sieboldii transcriptome. Results of differential gene expression analysis together with qRT-PCR indicated that phase II is crucial for rapid and successful seed germination. This study is the first to present the global expression patterns of ABA-regulated transcripts in M. sieboldii seeds at different germinating phases.
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Ivanova A, O′Leary B, Signorelli S, Falconet D, Moyankova D, Whelan J, Djilianov D, Murcha MW. Mitochondrial activity and biogenesis during resurrection of Haberlea rhodopensis. THE NEW PHYTOLOGIST 2022; 236:943-957. [PMID: 35872573 PMCID: PMC9804507 DOI: 10.1111/nph.18396] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/11/2022] [Indexed: 06/01/2023]
Abstract
Haberlea rhodopensis is a resurrection plant that can tolerate extreme and prolonged periods of desiccation with a rapid restoration of physiological function upon rehydration. Specialized mechanisms are required to minimize cellular damage during desiccation and to maintain integrity for rapid recovery following rehydration. In this study we used respiratory activity measurements, electron microscopy, transcript, protein and blue native-PAGE analysis to investigate mitochondrial activity and biogenesis in fresh, desiccated and rehydrated detached H. rhodopensis leaves. We demonstrate that unlike photosynthesis, mitochondrial respiration was almost immediately activated to levels of fresh tissue upon rehydration. The abundance of transcripts and proteins involved in mitochondrial respiration and biogenesis were at comparable levels in fresh, desiccated and rehydrated tissues. Blue native-PAGE analysis revealed fully assembled and equally abundant OXPHOS complexes in mitochondria isolated from fresh, desiccated and rehydrated detached leaves. We observed a high abundance of alternative respiratory components which correlates with the observed high uncoupled respiration capacity in desiccated tissue. Our study reveals that during desiccation of vascular H. rhodopensis tissue, mitochondrial composition is conserved and maintained at a functional state allowing for an almost immediate activation to full capacity upon rehydration. Mitochondria-specific mechanisms were activated during desiccation which probably play a role in maintaining tolerance.
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Affiliation(s)
- Aneta Ivanova
- School of Molecular SciencesThe University of Western Australia35 Stirling Highway, CrawleyPerthWA6009Australia
- AgroBioInstituteAgricultural Academy8 Dragan Tzankov Blvd.1164SofiaBulgaria
| | - Brendan O′Leary
- School of Molecular SciencesThe University of Western Australia35 Stirling Highway, CrawleyPerthWA6009Australia
- Saskatoon Research and Development Centre, Agriculture and Agri‐Food Canada107 Science PlaceSaskatoonSKK1A 0C5Canada
| | - Santiago Signorelli
- School of Molecular SciencesThe University of Western Australia35 Stirling Highway, CrawleyPerthWA6009Australia
- Department of Plant Biology, School of AgricultureUniversidad de la RepúblicaE. Garzón 780, Sayago12900MontevideoUruguay
| | - Denis Falconet
- Cell and Plant Physiology Laboratory, CNRS, CEA, INRAE, IRIGUniversité Grenoble Alpes38054GrenobleFrance
| | - Daniela Moyankova
- AgroBioInstituteAgricultural Academy8 Dragan Tzankov Blvd.1164SofiaBulgaria
| | - James Whelan
- Department of Animal, Plant and Soil Science, School of Life Science, The ARC Centre of Excellence in Plant Energy BiologyLa Trobe UniversityBundoora3086VICAustralia
| | - Dimitar Djilianov
- AgroBioInstituteAgricultural Academy8 Dragan Tzankov Blvd.1164SofiaBulgaria
| | - Monika W. Murcha
- School of Molecular SciencesThe University of Western Australia35 Stirling Highway, CrawleyPerthWA6009Australia
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Li Y, Belt K, Alqahtani SF, Saha S, Fenske R, Van Aken O, Whelan J, Millar AH, Murcha MW, Huang S. The mitochondrial LYR protein SDHAF1 is required for succinate dehydrogenase activity in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 110:499-512. [PMID: 35080330 PMCID: PMC9306560 DOI: 10.1111/tpj.15684] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/21/2021] [Accepted: 01/18/2022] [Indexed: 06/02/2023]
Abstract
Succinate dehydrogenase (SDH, complex II), which plays an essential role in mitochondrial respiration and tricarboxylic acid metabolism, requires the assembly of eight nuclear-encoded subunits and the insertion of various cofactors. Here, we report on the characterization of an Arabidopsis thaliana leucine-tyrosine-arginine (LYR) protein family member SDHAF1, (At2g39725) is a factor required for SDH activity. SDHAF1 is located in mitochondria and can fully complement the yeast SDHAF1 deletion strain. Knockdown of SDHAF1 using RNA interference resulted in a decrease in seedling hypocotyl elongation and reduced SDH activity. Proteomic analyses revealed a decreased abundance of various SDH subunits and assembly factors. Protein interaction assays revealed that SDHAF1 can interact exclusively with the Fe-S cluster-containing subunit SDH2 and HSCB, a cochaperone involved in Fe-S cluster complex recruitment. Therefore, we propose that in Arabidopsis, SDHAF1 plays a role in the biogenesis of SDH2 to form the functional complex II, which is essential for mitochondrial respiration and metabolism.
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Affiliation(s)
- Ying Li
- ARC Centre of Excellence in Plant Energy BiologySchool of Molecular SciencesThe University of Western Australia35 Stirling HighwayCrawleyWestern Australia6009Australia
| | - Katharina Belt
- ARC Centre of Excellence in Plant Energy BiologySchool of Molecular SciencesThe University of Western Australia35 Stirling HighwayCrawleyWestern Australia6009Australia
| | - Saad F. Alqahtani
- ARC Centre of Excellence in Plant Energy BiologySchool of Molecular SciencesThe University of Western Australia35 Stirling HighwayCrawleyWestern Australia6009Australia
- Biochemistry Department, College of ScienceKing Saud UniversityRiyadhSaudi Arabia
| | - Saurabh Saha
- ARC Centre of Excellence in Plant Energy BiologySchool of Molecular SciencesThe University of Western Australia35 Stirling HighwayCrawleyWestern Australia6009Australia
| | - Ricarda Fenske
- ARC Centre of Excellence in Plant Energy BiologySchool of Molecular SciencesThe University of Western Australia35 Stirling HighwayCrawleyWestern Australia6009Australia
| | - Olivier Van Aken
- ARC Centre of Excellence in Plant Energy BiologySchool of Molecular SciencesThe University of Western Australia35 Stirling HighwayCrawleyWestern Australia6009Australia
- Department of Biology, Faculty of ScienceLund UniversitySE‐223 62LundSweden
| | - James Whelan
- ARC Centre of Excellence in Plant Energy Biology, Department of Animal, Plant and Soil Science, School of Life ScienceLa Trobe UniversityVictoriaAustralia
| | - A. Harvey Millar
- ARC Centre of Excellence in Plant Energy BiologySchool of Molecular SciencesThe University of Western Australia35 Stirling HighwayCrawleyWestern Australia6009Australia
| | - Monika W. Murcha
- ARC Centre of Excellence in Plant Energy BiologySchool of Molecular SciencesThe University of Western Australia35 Stirling HighwayCrawleyWestern Australia6009Australia
| | - Shaobai Huang
- ARC Centre of Excellence in Plant Energy BiologySchool of Molecular SciencesThe University of Western Australia35 Stirling HighwayCrawleyWestern Australia6009Australia
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9
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Choudhary A, Kumar A, Kaur N, Kaur H. Molecular cues of sugar signaling in plants. PHYSIOLOGIA PLANTARUM 2022; 174:e13630. [PMID: 35049040 DOI: 10.1111/ppl.13630] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/02/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
Sugars, the chemically bound form of energy, are formed by the absorption of photosynthetically active radiation and fixation in plants. During evolution, plants availed the sugar molecules as a resource, balancing molecule, and signaling molecule. The multifaceted role of sugar molecules in response to environmental stimuli makes it the central coordinator required for growth, survival, and continuity. During the course of evolution, the molecular networks have become complex to adapt or acclimate to the changing environment. Sugar molecules are sensed both intra and extracellularly by their specific sensors. The signal is transmitted by a signaling loop that involves various downstream signaling molecules, transcriptional factors and, most pertinent, the sensors TOR and SnRK1. In this review, the focus has been retained on the significance of the sugar sensors during signaling and induced modules to regulate plant growth, development, biotic and abiotic stress. It is interesting to visualize the sugar molecule as a signaling unit and not only a nutrient. Complete information on the downstream components of sugar signaling will open the gates for improving the qualitative and quantitative elements of crop plants.
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Affiliation(s)
- Anuj Choudhary
- Department of Botany, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, Punjab, India
| | - Antul Kumar
- Department of Botany, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, Punjab, India
| | - Nirmaljit Kaur
- Department of Botany, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, Punjab, India
| | - Harmanjot Kaur
- Department of Botany, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, Punjab, India
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10
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Kostoláni D, Ndiffo Yemeli GB, Švubová R, Kyzek S, Machala Z. Physiological Responses of Young Pea and Barley Seedlings to Plasma-Activated Water. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10081750. [PMID: 34451795 PMCID: PMC8400694 DOI: 10.3390/plants10081750] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/19/2021] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
This study demonstrates the indirect effects of non-thermal ambient air plasmas (NTP) on seed germination and plant growth. It investigates the effect of plasma-activated water (PAW) on 3-day-old seedlings of two important farm plants-barley and pea. Applying different types of PAW on pea seedlings exhibited stimulation of amylase activity and had no inhibition of seed germination, total protein concentration or protease activity. Moreover, PAW caused no or only moderate oxidative stress that was in most cases effectively alleviated by antioxidant enzymes and proved by in situ visualization of H2O2 and ˙O2-. In pea seedlings, we observed a faster turn-over from anaerobic to aerobic metabolism proved by inhibition of alcohol dehydrogenase (ADH) activity. Additionally, reactive oxygen/nitrogen species contained in PAW did not affect the DNA integrity. On the other hand, the high level of DNA damage in barley together with the reduced root and shoot length and amylase activity was attributed to the oxidative stress caused by PAW, which was exhibited by the enhanced activity of guaiacol peroxidase or ADH. Our results show the glow discharge PAW at 1 min activation time as the most promising for pea. However, determining the beneficial type of PAW for barley requires further investigation.
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Affiliation(s)
- Dominik Kostoláni
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia; (D.K.); (R.Š.)
| | - Gervais B. Ndiffo Yemeli
- Division of Environmental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynská Dolina, 842 48 Bratislava, Slovakia;
| | - Renáta Švubová
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia; (D.K.); (R.Š.)
| | - Stanislav Kyzek
- Department of Genetics, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia;
| | - Zdenko Machala
- Division of Environmental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynská Dolina, 842 48 Bratislava, Slovakia;
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11
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Przybyla-Toscano J, Christ L, Keech O, Rouhier N. Iron-sulfur proteins in plant mitochondria: roles and maturation. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:2014-2044. [PMID: 33301571 DOI: 10.1093/jxb/eraa578] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 12/05/2020] [Indexed: 05/22/2023]
Abstract
Iron-sulfur (Fe-S) clusters are prosthetic groups ensuring electron transfer reactions, activating substrates for catalytic reactions, providing sulfur atoms for the biosynthesis of vitamins or other cofactors, or having protein-stabilizing effects. Hence, metalloproteins containing these cofactors are essential for numerous and diverse metabolic pathways and cellular processes occurring in the cytoplasm. Mitochondria are organelles where the Fe-S cluster demand is high, notably because the activity of the respiratory chain complexes I, II, and III relies on the correct assembly and functioning of Fe-S proteins. Several other proteins or complexes present in the matrix require Fe-S clusters as well, or depend either on Fe-S proteins such as ferredoxins or on cofactors such as lipoic acid or biotin whose synthesis relies on Fe-S proteins. In this review, we have listed and discussed the Fe-S-dependent enzymes or pathways in plant mitochondria including some potentially novel Fe-S proteins identified based on in silico analysis or on recent evidence obtained in non-plant organisms. We also provide information about recent developments concerning the molecular mechanisms involved in Fe-S cluster synthesis and trafficking steps of these cofactors from maturation factors to client apoproteins.
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Affiliation(s)
- Jonathan Przybyla-Toscano
- Université de Lorraine, INRAE, IAM, Nancy, France
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden
| | - Loïck Christ
- Université de Lorraine, INRAE, IAM, Nancy, France
| | - Olivier Keech
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden
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12
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LPS1, Encoding Iron-Sulfur Subunit SDH2-1 of Succinate Dehydrogenase, Affects Leaf Senescence and Grain Yield in Rice. Int J Mol Sci 2020; 22:ijms22010157. [PMID: 33375756 PMCID: PMC7795075 DOI: 10.3390/ijms22010157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 12/17/2020] [Accepted: 12/23/2020] [Indexed: 11/17/2022] Open
Abstract
The iron-sulfur subunit (SDH2) of succinate dehydrogenase plays a key role in electron transport in plant mitochondria. However, it is yet unknown whether SDH2 genes are involved in leaf senescence and yield formation. In this study, we isolated a late premature senescence mutant, lps1, in rice (Oryza sativa). The mutant leaves exhibited brown spots at late tillering stage and wilted at the late grain-filling stage and mature stage. In its premature senescence leaves, photosynthetic pigment contents and net photosynthetic rate were reduced; chloroplasts and mitochondria were degraded. Meanwhile, lps1 displayed small panicles, low seed-setting rate and dramatically reduced grain yield. Gene cloning and complementation analysis suggested that the causal gene for the mutant phenotype was OsSDH2-1 (LOC_Os08g02640), in which single nucleotide mutation resulted in an amino acid substitution in the encoded protein. OsSDH2-1 gene was expressed in all organs tested, with higher expression in leaves, root tips, ovary and anthers. OsSDH2-1 protein was targeted to mitochondria. Furthermore, reactive oxygen species (ROS), mainly H2O2, was excessively accumulated in leaves and young panicles of lps1, which could cause premature leaf senescence and affect panicle development and pollen function. Taken together, OsSDH2-1 plays a crucial role in leaf senescence and yield formation in rice.
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13
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Tian R, Wang F, Zheng Q, Niza VMAGE, Downie AB, Perry SE. Direct and indirect targets of the arabidopsis seed transcription factor ABSCISIC ACID INSENSITIVE3. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:1679-1694. [PMID: 32445409 DOI: 10.1111/tpj.14854] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 05/09/2020] [Accepted: 05/15/2020] [Indexed: 05/04/2023]
Abstract
Arabidopsis thaliana ABSCISIC ACID INSENSITIVE3 (ABI3) is a transcription factor in the B3 domain family. ABI3, along with B3 domain transcription factors LEAFY COTYLEDON2 (LEC2) and FUSCA3 (FUS3), and LEC1, a subunit of the CCAAT box-binding complex, form the so-called LAFL network to control various aspects of seed development and maturation. ABI3 also contributes to the abscisic acid (ABA) response. We report on chromatin immunoprecipitation-tiling array experiments to map binding sites for ABI3 globally. We also assessed transcriptomes in response to ABI3 by comparing developing abi3-5 and wild-type seeds and combined this information to ascertain direct and indirect responsive ABI3 target genes. ABI3 can induce and repress its transcription of target genes directly and some intriguing differences exist in cis motifs between these groups of genes. Directly regulated targets reflect the role of ABI3 in seed maturation, desiccation tolerance, entry into a quiescent state and longevity. Interestingly, ABI3 directly represses a gene encoding a microRNA (MIR160B) that targets AUXIN RESPONSE FACTOR (ARF)10 and ARF16 that are involved in establishment of dormancy. In addition, ABI3, like FUS3, regulates genes encoding MIR156 but while FUS3 only induces genes encoding this product, ABI3 induces these genes during the early stages of seed development, but represses these genes during late development. The interplay between ABI3, the other LAFL genes, and the VP1/ABI3-LIKE (VAL) genes, which are involved in the transition to seedling development are examined and reveal complex interactions controlling development.
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Affiliation(s)
- Ran Tian
- UK Seed Biology Group, Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY, 40546-0312, USA
| | - Fangfang Wang
- UK Seed Biology Group, Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY, 40546-0312, USA
| | - Qiaolin Zheng
- UK Seed Biology Group, Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY, 40546-0312, USA
| | - Venus M A G E Niza
- UK Seed Biology Group, Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY, 40546-0312, USA
| | - A Bruce Downie
- UK Seed Biology Group, Department of Horticulture, University of Kentucky, Lexington, KY, 40546-0312, USA
| | - Sharyn E Perry
- UK Seed Biology Group, Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY, 40546-0312, USA
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14
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Condori-Apfata JA, Batista-Silva W, Medeiros DB, Vargas JR, Valente LML, Heyneke E, Pérez-Diaz JL, Fernie AR, Araújo WL, Nunes-Nesi A. The Arabidopsis E 1 subunit of the 2-oxoglutarate dehydrogenase complex modulates plant growth and seed production. PLANT MOLECULAR BIOLOGY 2019; 101:183-202. [PMID: 31286324 DOI: 10.1007/s11103-019-00900-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 06/29/2019] [Indexed: 05/25/2023]
Abstract
Isoforms of 2-OGDH E1 subunit are not functionally redundant in plant growth and development of A. thaliana. The tricarboxylic acid cycle enzyme 2-oxoglutarate dehydrogenase (2-OGDH) converts 2-oxoglutarate (2-OG) to succinyl-CoA concomitant with the reduction of NAD+. 2-OGDH has an essential role in plant metabolism, being both a limiting step during mitochondrial respiration as well as a key player in carbon-nitrogen interactions. In Arabidopsis thaliana two genes encode for E1 subunit of 2-OGDH but the physiological roles of each isoform remain unknown. Thus, in the present study we isolated Arabidopsis T-DNA insertion knockout mutant lines for each of the genes encoding the E1 subunit of 2-OGDH enzyme. All mutant plants exhibited substantial reduction in both respiration and CO2 assimilation rates. Furthermore, mutant lines exhibited reduced levels of chlorophylls and nitrate, increased levels of sucrose, malate and fumarate and minor changes in total protein and starch levels in leaves. Despite the similar metabolic phenotypes for the two E1 isoforms the reduction in the expression of each gene culminated in different responses in terms of plant growth and seed production indicating distinct roles for each isoform. Collectively, our results demonstrated the importance of the E1 subunit of 2-OGDH in both autotrophic and heterotrophic tissues and suggest that the two E1 isoforms are not functionally redundant in terms of plant growth in A. thaliana.
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Affiliation(s)
- Jorge A Condori-Apfata
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Willian Batista-Silva
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - David Barbosa Medeiros
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Jonas Rafael Vargas
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Luiz Mário Lopes Valente
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Elmien Heyneke
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam Golm, Germany
| | - Jorge Luis Pérez-Diaz
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam Golm, Germany
| | - Wagner L Araújo
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.
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15
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Huang S, Braun HP, Gawryluk RMR, Millar AH. Mitochondrial complex II of plants: subunit composition, assembly, and function in respiration and signaling. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 98:405-417. [PMID: 30604579 DOI: 10.1111/tpj.14227] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 05/20/2023]
Abstract
Complex II [succinate dehydrogenase (succinate-ubiquinone oxidoreductase); EC 1.3.5.1; SDH] is the only enzyme shared by both the electron transport chain and the tricarboxylic acid (TCA) cycle in mitochondria. Complex II in plants is considered unusual because of its accessory subunits (SDH5-SDH8), in addition to the catalytic subunits of SDH found in all eukaryotes (SDH1-SDH4). Here, we review compositional and phylogenetic analysis and biochemical dissection studies to both clarify the presence and propose a role for these subunits. We also consider the wider functional and phylogenetic evidence for SDH assembly factors and the reports from plants on the control of SDH1 flavination and SDH1-SDH2 interaction. Plant complex II has been shown to influence stomatal opening, the plant defense response and reactive oxygen species-dependent stress responses. Signaling molecules such as salicyclic acid (SA) and nitric oxide (NO) are also reported to interact with the ubiquinone (UQ) binding site of SDH, influencing signaling transduction in plants. Future directions for SDH research in plants and the specific roles of its different subunits and assembly factors are suggested, including the potential for reverse electron transport to explain the succinate-dependent production of reactive oxygen species in plants and new avenues to explore the evolution of plant mitochondrial complex II and its utility.
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Affiliation(s)
- Shaobai Huang
- School of Molecular Sciences & ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, 6009, Crawley, WA, Australia
| | - Hans-Peter Braun
- Institute of Plant Genetics, Leibniz Universität Hannover, 30419, Hannover, Germany
| | | | - A Harvey Millar
- School of Molecular Sciences & ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, 6009, Crawley, WA, Australia
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16
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Heidorn-Czarna M, Domanski D, Kwasniak-Owczarek M, Janska H. Targeted Proteomics Approach Toward Understanding the Role of the Mitochondrial Protease FTSH4 in the Biogenesis of OXPHOS During Arabidopsis Seed Germination. FRONTIERS IN PLANT SCIENCE 2018; 9:821. [PMID: 29963070 PMCID: PMC6014109 DOI: 10.3389/fpls.2018.00821] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/28/2018] [Indexed: 05/23/2023]
Abstract
Seed germination provides an excellent model to study the process of mitochondrial biogenesis. It is a complex and strictly regulated process which requires a proper biogenesis of fully active organelles from existing promitochondrial structures. We have previously reported that the lack of the inner mitochondrial membrane protease FTSH4 delayed Arabidopsis seed germination. Here, we implemented a targeted mass spectrometry-based approach, Multiple Reaction Monitoring (MRM), with stable-isotope-labeled standard peptides for increased sensitivity, to quantify mitochondrial proteins in dry and germinating wild-type and ftsh4 mutant seeds, lacking the FTSH4 protease. Using total seed protein extracts we measured the abundance of the peptide targets belonging to the OXPHOS complexes, AOX1A, transport, and inner membrane scaffold as well as mitochondrial proteins that are highly specific to dry and germinating seeds. The MRM assay showed that the abundance of these proteins in ftsh4 did not differ substantially from that observed in wild-type at the level of dry seed and after stratification, but we observed a reduction in protein abundance in most of the examined OXPHOS subunits in the later stages of germination. These changes in OXPHOS protein levels in ftsh4 mutants were accompanied by a lower cytochrome pathway activity as well as an increased AOX1A amount at the transcript and protein level and alternative pathway activity. The analyses of the steady-state transcript levels of mitochondrial and nuclear genes encoding OXPHOS subunits did not show significant difference in their amount, indicating that the observed changes in the OXPHOS occurred at the post-transcriptional level. At the time when ftsh4 seeds were fully germinated, the abundance of the OXPHOS proteins in the mutant was either slightly lowered or comparable to these amounts in wild-type seeds at the similar developmental stage. By the implementation of an integrative approach combining targeted proteomics, quantitative transcriptomics, and physiological studies we have shown that the FTSH4 protease has an important role in the biogenesis of OXPHOS and thus biogenesis of mitochondria during germination of Arabidopsis seeds.
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Affiliation(s)
- Malgorzata Heidorn-Czarna
- Department of Cellular Molecular Biology, Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
| | - Dominik Domanski
- Mass Spectrometry Laboratory, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | | | - Hanna Janska
- Department of Cellular Molecular Biology, Faculty of Biotechnology, University of Wrocław, Wrocław, Poland
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17
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Wingler A. Transitioning to the Next Phase: The Role of Sugar Signaling throughout the Plant Life Cycle. PLANT PHYSIOLOGY 2018; 176:1075-1084. [PMID: 28974627 PMCID: PMC5813577 DOI: 10.1104/pp.17.01229] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 09/26/2017] [Indexed: 05/17/2023]
Abstract
Developmental transitions depend on the availability of sufficient carbon resources, which is sensed by sugar signaling pathways for high and low carbon availability.
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Affiliation(s)
- Astrid Wingler
- School of Biological, Earth and Environmental Sciences, University College Cork, T23 TK30, Cork, Ireland
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18
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Zhou Y, Xu D, Jia L, Huang X, Ma G, Wang S, Zhu M, Zhang A, Guan M, Lu K, Xu X, Wang R, Li J, Qu C. Genome-Wide Identification and Structural Analysis of bZIP Transcription Factor Genes in Brassica napus. Genes (Basel) 2017; 8:genes8100288. [PMID: 29064393 PMCID: PMC5664138 DOI: 10.3390/genes8100288] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 10/16/2017] [Accepted: 10/19/2017] [Indexed: 12/14/2022] Open
Abstract
The basic region/leucine zipper motif (bZIP) transcription factor family is one of the largest families of transcriptional regulators in plants. bZIP genes have been systematically characterized in some plants, but not in rapeseed (Brassica napus). In this study, we identified 247 BnbZIP genes in the rapeseed genome, which we classified into 10 subfamilies based on phylogenetic analysis of their deduced protein sequences. The BnbZIP genes were grouped into functional clades with Arabidopsis genes with similar putative functions, indicating functional conservation. Genome mapping analysis revealed that the BnbZIPs are distributed unevenly across all 19 chromosomes, and that some of these genes arose through whole-genome duplication and dispersed duplication events. All expression profiles of 247 bZIP genes were extracted from RNA-sequencing data obtained from 17 different B. napus ZS11 tissues with 42 various developmental stages. These genes exhibited different expression patterns in various tissues, revealing that these genes are differentially regulated. Our results provide a valuable foundation for functional dissection of the different BnbZIP homologs in B. napus and its parental lines and for molecular breeding studies of bZIP genes in B. napus.
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Affiliation(s)
- Yan Zhou
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Daixiang Xu
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Ledong Jia
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Xiaohu Huang
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Guoqiang Ma
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Shuxian Wang
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Meichen Zhu
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Aoxiang Zhang
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Mingwei Guan
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Kun Lu
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Xinfu Xu
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Rui Wang
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Jiana Li
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
| | - Cunmin Qu
- Chongqing Rapeseed Engineering Research Center, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing 400716, China.
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