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Zhang Y, Zheng J, Linyerera SM, Magwanga RO, Hou Y, Wang Y, Xu Y, Khan A, Yu S, Zhou Z, Liu F, Cai X. Overexpression and knockdown of cotton GhdadD gene reveals its drought and salt stress tolerance role. iScience 2024; 27:108664. [PMID: 38226165 PMCID: PMC10788213 DOI: 10.1016/j.isci.2023.108664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 08/11/2023] [Accepted: 12/05/2023] [Indexed: 01/17/2024] Open
Abstract
The 5'-deoxyadenosine deaminase (DADD), a member of the amidohydrolase family regulates biological purine metabolism. In this study, bioinformatic analysis, overexpression and knockdown of GhdadD gene were detected to identify its potential role in drought and salt stress tolerance. The results revealed that GhdadD was induced by ABA, Auxin, MBS and light responsive elements. In transgenic Arabidopsis, seed germination rate and root length were increased under drought or salt stress. GhdadD overexpressed seedlings resulted in higher plant height, less leaf damage and lower ion permeability. The expression of osmotic stress and ABA-responsive genes were up regulated. While in GhdadD-silenced cotton seedlings, CAT, SOD activity and soluble sugar content were reduced, MDA content was increased, and the stoma opening was depressed under drought or salt stress. Some osmics stress marker genes were also up regulated. These data indicating that GhdadD enhanced plant resistance to drought and salt stress through ABA pathways.
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Affiliation(s)
- Yuanyuan Zhang
- National Nanfan Research Institute (Sanya), Chinese Academy of Agriculture Sciences, Sanya 572025, China
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
| | - Jie Zheng
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
| | - Shiraku Margaret Linyerera
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
| | - Richard Odongo Magwanga
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
| | - Yuqing Hou
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
| | - Yuhong Wang
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
| | - Yanchao Xu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
| | - Aziz Khan
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
| | - Shuxun Yu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
| | - Zhongli Zhou
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
| | - Fang Liu
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China
| | - Xiaoyan Cai
- National Nanfan Research Institute (Sanya), Chinese Academy of Agriculture Sciences, Sanya 572025, China
- National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/Institute of Cotton Research, Chinese Academy of Agricultural Sciences (ICR, CAAS), Anyang, Henan 455000, China
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Lu Q, Houbaert A, Ma Q, Huang J, Sterck L, Zhang C, Benjamins R, Coppens F, Van Breusegem F, Russinova E. Adenosine monophosphate deaminase modulates BIN2 activity through hydrogen peroxide-induced oligomerization. THE PLANT CELL 2022; 34:3844-3859. [PMID: 35876813 PMCID: PMC9520590 DOI: 10.1093/plcell/koac203] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 06/17/2022] [Indexed: 05/06/2023]
Abstract
The Arabidopsis thaliana GSK3-like kinase, BRASSINOSTEROID-INSENSITIVE2 (BIN2) is a key negative regulator of brassinosteroid (BR) signaling and a hub for crosstalk with other signaling pathways. However, the mechanisms controlling BIN2 activity are not well understood. Here we performed a forward genetic screen for resistance to the plant-specific GSK3 inhibitor bikinin and discovered that a mutation in the ADENOSINE MONOPHOSPHATE DEAMINASE (AMPD)/EMBRYONIC FACTOR1 (FAC1) gene reduces the sensitivity of Arabidopsis seedlings to both bikinin and BRs. Further analyses revealed that AMPD modulates BIN2 activity by regulating its oligomerization in a hydrogen peroxide (H2O2)-dependent manner. Exogenous H2O2 induced the formation of BIN2 oligomers with a decreased kinase activity and an increased sensitivity to bikinin. By contrast, AMPD activity inhibition reduced the cytosolic reactive oxygen species (ROS) levels and the amount of BIN2 oligomers, correlating with the decreased sensitivity of Arabidopsis plants to bikinin and BRs. Furthermore, we showed that BIN2 phosphorylates AMPD to possibly alter its function. Our results uncover the existence of an H2O2 homeostasis-mediated regulation loop between AMPD and BIN2 that fine-tunes the BIN2 kinase activity to control plant growth and development.
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Affiliation(s)
- Qing Lu
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | | | - Qian Ma
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Jingjing Huang
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Lieven Sterck
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Cheng Zhang
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - René Benjamins
- Plant Developmental Biology, Wageningen University Research, 6708 PB Wageningen, The Netherlands
| | - Frederik Coppens
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Frank Van Breusegem
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
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3
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Lindell SD, Maechling S, Klein R, Freigang J, Laber B, Blanazs L, Leonhardt M, Haupt S, Petry T, Sabina RL. Mechanism and structure based design of inhibitors of AMP and adenosine deaminase. Bioorg Med Chem 2021; 43:116272. [PMID: 34157570 DOI: 10.1016/j.bmc.2021.116272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 10/21/2022]
Abstract
Inhibitors of the enzyme adenosine monophosphate deaminase (AMPD) show interesting levels of herbicidal activity. An enzyme mechanism-based approach has been used to design new inhibitors of AMPD starting from nebularine (6) and resulting in the synthesis of 2-deoxy isonebularine (16). This compound is a potent inhibitor of the related enzyme adenosine deaminase (ADA; IC50 16 nM), binding over 5000 times more strongly than nebularine. It is proposed that the herbicidal activity of compound 16 is due to 5́-phosphorylation in planta to give an inhibitor of AMPD. Subsequently, an enzyme structure-based approach was used to design new non-ribosyl AMPD inhibitors. The initial lead structure was discovered by in silico screening of a virtual library against plant AMPD. In a second step, binding to AMPD was further optimised via more detailed molecular modeling leading to 2-(benzyloxy)-5-(imidazo[2,1-f][1,2,4]triazin-7-yl)benzoic acid (36) (IC50 300 nM). This compound does not inhibit ADA and shows excellent selectivity for plant over human AMPD.
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Affiliation(s)
- Stephen D Lindell
- Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany.
| | - Simon Maechling
- Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Robert Klein
- Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Jörg Freigang
- Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Bernd Laber
- Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Lisa Blanazs
- Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Merisa Leonhardt
- Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Susanne Haupt
- Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Thomas Petry
- Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Richard L Sabina
- Department of Biomedical Sciences, Oakland University, William Beaumont School of Medicine, Rochester, MI 48309, USA
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4
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Straube H, Niehaus M, Zwittian S, Witte CP, Herde M. Enhanced nucleotide analysis enables the quantification of deoxynucleotides in plants and algae revealing connections between nucleoside and deoxynucleoside metabolism. THE PLANT CELL 2021; 33:270-289. [PMID: 33793855 PMCID: PMC8136904 DOI: 10.1093/plcell/koaa028] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/12/2020] [Indexed: 05/02/2023]
Abstract
Detecting and quantifying low-abundance (deoxy)ribonucleotides and (deoxy)ribonucleosides in plants remains difficult; this is a major roadblock for the investigation of plant nucleotide (NT) metabolism. Here, we present a method that overcomes this limitation, allowing the detection of all deoxy- and ribonucleotides as well as the corresponding nucleosides from the same plant sample. The method is characterized by high sensitivity and robustness enabling the reproducible detection and absolute quantification of these metabolites even if they are of low abundance. Employing the new method, we analyzed Arabidopsis thaliana null mutants of CYTIDINE DEAMINASE, GUANOSINE DEAMINASE, and NUCLEOSIDE HYDROLASE 1, demonstrating that the deoxyribonucleotide (dNT) metabolism is intricately interwoven with the catabolism of ribonucleosides (rNs). In addition, we discovered a function of rN catabolic enzymes in the degradation of deoxyribonucleosides in vivo. We also determined the concentrations of dNTs in several mono- and dicotyledonous plants, a bryophyte, and three algae, revealing a correlation of GC to AT dNT ratios with genomic GC contents. This suggests a link between the genome and the metabolome previously discussed but not experimentally addressed. Together, these findings demonstrate the potential of this new method to provide insight into plant NT metabolism.
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Affiliation(s)
- Henryk Straube
- Department of Molecular Nutrition and Biochemistry of Plants, Leibniz Universität Hannover, Hannover 30419, Germany
| | - Markus Niehaus
- Department of Molecular Nutrition and Biochemistry of Plants, Leibniz Universität Hannover, Hannover 30419, Germany
| | - Sarah Zwittian
- Department of Molecular Nutrition and Biochemistry of Plants, Leibniz Universität Hannover, Hannover 30419, Germany
| | - Claus-Peter Witte
- Department of Molecular Nutrition and Biochemistry of Plants, Leibniz Universität Hannover, Hannover 30419, Germany
| | - Marco Herde
- Department of Molecular Nutrition and Biochemistry of Plants, Leibniz Universität Hannover, Hannover 30419, Germany
- Author for correspondence:
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5
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Shi L, Wu Z, Zhang Y, Zhang Z, Fang W, Wang Y, Wan Z, Wang K, Ke S. Herbicidal Secondary Metabolites from Actinomycetes: Structure Diversity, Modes of Action, and Their Roles in the Development of Herbicides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:17-32. [PMID: 31809036 DOI: 10.1021/acs.jafc.9b06126] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Weeds had caused significant loss for crop production in the process of agriculture. Herbicides have played an important role in securing crop production. However, the high reliance on herbicides has led to environmental issues as well as the evolution of herbicide resistance. Thus, there is an urgent need for new herbicides with safer toxicological profiles and novel modes of action. Actinomycetes produce very diverse bioactive compounds, of which some show potent biopesticidal activity. The herbicidal secondary metabolites from actinomycetes can be classified into several groups, such as amino acids, peptides, nucleosides, macrolides, lactones, amide, amines, etc., some of which have been successfully developed as commercial herbicides. The structure diversity and evolved biological activity of secondary metabolites from actinomycetes can offer opportunities for the development of both directly used bioherbicides and synthetic herbicides with new target sites, and thus, this review focuses on the structure, herbicidal activity, and modes of action of secondary metabolites from actinomycetes.
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Affiliation(s)
- Liqiao Shi
- Hubei Biopesticide Engineering Research Centre , Hubei Academy of Agricultural Sciences , Wuhan , Hubei 430064 , People's Republic of China
| | - Zhaoyuan Wu
- Hubei Biopesticide Engineering Research Centre , Hubei Academy of Agricultural Sciences , Wuhan , Hubei 430064 , People's Republic of China
| | - Yani Zhang
- Hubei Biopesticide Engineering Research Centre , Hubei Academy of Agricultural Sciences , Wuhan , Hubei 430064 , People's Republic of China
| | - Zhigang Zhang
- Hubei Biopesticide Engineering Research Centre , Hubei Academy of Agricultural Sciences , Wuhan , Hubei 430064 , People's Republic of China
| | - Wei Fang
- Hubei Biopesticide Engineering Research Centre , Hubei Academy of Agricultural Sciences , Wuhan , Hubei 430064 , People's Republic of China
| | - Yueying Wang
- Hubei Biopesticide Engineering Research Centre , Hubei Academy of Agricultural Sciences , Wuhan , Hubei 430064 , People's Republic of China
| | - Zhongyi Wan
- Hubei Biopesticide Engineering Research Centre , Hubei Academy of Agricultural Sciences , Wuhan , Hubei 430064 , People's Republic of China
| | - Kaimei Wang
- Hubei Biopesticide Engineering Research Centre , Hubei Academy of Agricultural Sciences , Wuhan , Hubei 430064 , People's Republic of China
| | - Shaoyong Ke
- Hubei Biopesticide Engineering Research Centre , Hubei Academy of Agricultural Sciences , Wuhan , Hubei 430064 , People's Republic of China
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6
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Witte CP, Herde M. Nucleotide Metabolism in Plants. PLANT PHYSIOLOGY 2020; 182:63-78. [PMID: 31641078 PMCID: PMC6945853 DOI: 10.1104/pp.19.00955] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 10/15/2019] [Indexed: 05/14/2023]
Abstract
Nucleotide metabolism is an essential function in plants.
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Affiliation(s)
- Claus-Peter Witte
- Leibniz Universität Hannover, Department of Molecular Nutrition and Biochemistry of Plants, Herrenhäuser Strasse 2, 30419 Hannover, Germany
| | - Marco Herde
- Leibniz Universität Hannover, Department of Molecular Nutrition and Biochemistry of Plants, Herrenhäuser Strasse 2, 30419 Hannover, Germany
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7
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Nagappa LK, Singh D, Dey S, Kumar KA, Balaram H. Biochemical and physiological investigations on adenosine 5' monophosphate deaminase from Plasmodium spp. Mol Microbiol 2019; 112:699-717. [PMID: 31132185 DOI: 10.1111/mmi.14313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/22/2019] [Indexed: 11/29/2022]
Abstract
The interplay between ATP generating and utilizing pathways in a cell is responsible for maintaining cellular ATP/energy homeostasis that is reflected by Adenylate Energy Charge (AEC) ratio. Adenylate kinase (AK), that catalyzes inter-conversion of ADP, ATP and AMP, plays a major role in maintaining AEC and is regulated by cellular AMP levels. Hence, the enzymes AMP deaminase (AMPD) and nucleotidases, which catabolize AMP, indirectly regulate AK activity and in-turn affect AEC. Here, we present the first report on AMPD from Plasmodium, the causative agent of malaria. The recombinant enzyme expressed in Saccharomyces cerevisiae was studied using functional complementation assay and residues vital for enzyme activity have been identified. Similarities and differences between Plasmodium falciparum AMPD (PfAMPD) and its homologs from yeast, Arabidopsis and humans are also discussed. The AMPD gene was deleted in the murine malaria parasite P. berghei and was found to be dispensable during all stages of the parasite life cycle. However, when episomal expression was attempted, viable parasites were not obtained, suggesting that perturbing AMP homeostasis by over-expressing AMPD might be lethal. As AMPD is known to be allosterically modulated by ATP, GTP and phosphate, allosteric activators of PfAMPD could be developed as anti-parasitic agents.
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Affiliation(s)
- Lakshmeesha Kempaiah Nagappa
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bengaluru, India
| | - Dipti Singh
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Sandeep Dey
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Kota Arun Kumar
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Hemalatha Balaram
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bengaluru, India
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8
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Soltabayeva A, Srivastava S, Kurmanbayeva A, Bekturova A, Fluhr R, Sagi M. Early Senescence in Older Leaves of Low Nitrate-Grown Atxdh1 Uncovers a Role for Purine Catabolism in N Supply. PLANT PHYSIOLOGY 2018; 178:1027-1044. [PMID: 30190419 PMCID: PMC6236613 DOI: 10.1104/pp.18.00795] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 08/25/2018] [Indexed: 05/19/2023]
Abstract
The nitrogen (N)-rich ureides allantoin and allantoate, which are products of purine catabolism, play a role in N delivery in Leguminosae. Here, we examined their role as an N source in nonlegume plants using Arabidopsis (Arabidopsis thaliana) plants mutated in XANTHINE DEHYDROGENASE1 (AtXDH1), a catalytic bottleneck in purine catabolism. Older leaves of the Atxdh1 mutant exhibited early senescence, lower soluble protein, and lower organic N levels as compared with wild-type older leaves when grown with 1 mm nitrate but were comparable to the wild type under 5 mm nitrate. Similar nitrate-dependent senescence phenotypes were evident in the older leaves of allantoinase (Ataln) and allantoate amidohydrolase (Ataah) mutants, which also are impaired in purine catabolism. Under low-nitrate conditions, xanthine accumulated in older leaves of Atxdh1, whereas allantoin accumulated in both older and younger leaves of Ataln but not in wild-type leaves, indicating the remobilization of xanthine-degraded products from older to younger leaves. Supporting this notion, ureide transporter expression was enhanced in older leaves of the wild type in low-nitrate as compared with high-nitrate conditions. Elevated transcripts and proteins of AtXDH and AtAAH were detected in low-nitrate-grown wild-type plants, indicating regulation at protein and transcript levels. The higher nitrate reductase activity in Atxdh1 leaves compared with wild-type leaves indicated a need for nitrate assimilation products. Together, these results indicate that the absence of remobilized purine-degraded N from older leaves of Atxdh1 caused senescence symptoms, a result of higher chloroplastic protein degradation in older leaves of low-nitrate-grown plants.
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Affiliation(s)
- Aigerim Soltabayeva
- Plant Stress Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus 84990, Israel
| | - Sudhakar Srivastava
- Plant Stress Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus 84990, Israel
| | - Assylay Kurmanbayeva
- Plant Stress Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus 84990, Israel
| | - Aizat Bekturova
- Plant Stress Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus 84990, Israel
| | - Robert Fluhr
- Department of Plant Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Moshe Sagi
- Plant Stress Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus 84990, Israel
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9
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Chew BL, Fisk ID, Fray R, Tucker GA, Bodi Z, Ferguson A, Xia W, Seymour GB. The effect of adenosine monophosphate deaminase overexpression on the accumulation of umami-related metabolites in tomatoes. PLANT CELL REPORTS 2017; 36:81-87. [PMID: 27662835 DOI: 10.1007/s00299-016-2058-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 09/13/2016] [Indexed: 05/05/2023]
Abstract
This study highlights the changes in umami-related nucleotide and glutamate levels when the AMP deaminase gene was elevated in transgenic tomato. Taste is perceived as one of a combination of five sensations, sweet, sour, bitter, salty, and umami. The umami taste is best known as a savoury sensation and plays a central role in food flavour, palatability, and eating satisfaction. Umami flavour can be imparted by the presence of glutamate and is greatly enhanced by the addition of ribonucleotides, such as inosine monophosphate (IMP) and guanosine monophosphate (GMP). The production of IMP is regulated by the enzyme adenosine monophosphate (AMP) deaminase which functions to convert AMP into IMP. We have generated transgenic tomato (Solanum lycopersicum) lines over expressing AMP deaminase under the control of a fruit-specific promoter. The transgenic lines showed substantially enhanced levels of AMP deaminase expression in comparison to the wild-type control. Elevated AMP deaminase levels resulted in the reduced accumulation of glutamate and increased levels of the umami nucleotide GMP. AMP concentrations were unchanged. The effects on the levels of glutamate and GMP were unexpected and are discussed in relation to the metabolite flux within this pathway.
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Affiliation(s)
- Bee Lynn Chew
- School of Biological Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Ian D Fisk
- Division of Food Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Rupert Fray
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Gregory A Tucker
- Division of Nutritional Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Zsuzsanna Bodi
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Alison Ferguson
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Wei Xia
- Division of Nutritional Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Graham B Seymour
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK.
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10
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Nomura Y, Izumi A, Fukunaga Y, Kusumi K, Iba K, Watanabe S, Nakahira Y, Weber APM, Nozawa A, Tozawa Y. Diversity in guanosine 3',5'-bisdiphosphate (ppGpp) sensitivity among guanylate kinases of bacteria and plants. J Biol Chem 2014; 289:15631-41. [PMID: 24722991 PMCID: PMC4140918 DOI: 10.1074/jbc.m113.534768] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 03/20/2014] [Indexed: 11/06/2022] Open
Abstract
The guanosine 3',5'-bisdiphosphate (ppGpp) signaling system is shared by bacteria and plant chloroplasts, but its role in plants has remained unclear. Here we show that guanylate kinase (GK), a key enzyme in guanine nucleotide biosynthesis that catalyzes the conversion of GMP to GDP, is a target of regulation by ppGpp in chloroplasts of rice, pea, and Arabidopsis. Plants have two distinct types of GK that are localized to organelles (GKpm) or to the cytosol (GKc), with both enzymes being essential for growth and development. We found that the activity of rice GKpm in vitro was inhibited by ppGpp with a Ki of 2.8 μM relative to the substrate GMP, whereas the Km of this enzyme for GMP was 73 μM. The IC50 of ppGpp for GKpm was ∼10 μM. In contrast, the activity of rice GKc was insensitive to ppGpp, as was that of GK from bakers' yeast, which is also a cytosolic enzyme. These observations suggest that ppGpp plays a pivotal role in the regulation of GTP biosynthesis in chloroplasts through specific inhibition of GKpm activity, with the regulation of GTP biosynthesis in chloroplasts thus being independent of that in the cytosol. We also found that GKs of Escherichia coli and Synechococcus elongatus PCC 7942 are insensitive to ppGpp, in contrast to the ppGpp sensitivity of the Bacillus subtilis enzyme. Our biochemical characterization of GK enzymes has thus revealed a novel target of ppGpp in chloroplasts and has uncovered diversity among bacterial GKs with regard to regulation by ppGpp.
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Affiliation(s)
- Yuhta Nomura
- From the Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan, the Proteo-Science Center and the Venture Business Laboratory, Ehime University, Matsuyama 790-8577, Japan
| | - Atsushi Izumi
- the Proteo-Science Center and the Venture Business Laboratory, Ehime University, Matsuyama 790-8577, Japan
| | - Yoshinori Fukunaga
- From the Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan, the Proteo-Science Center and the Venture Business Laboratory, Ehime University, Matsuyama 790-8577, Japan
| | - Kensuke Kusumi
- the Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - Koh Iba
- the Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | - Seiya Watanabe
- the Faculty of Agriculture, Ehime University, Matsuyama 790-8566, Japan
| | - Yoichi Nakahira
- the Proteo-Science Center and the Venture Business Laboratory, Ehime University, Matsuyama 790-8577, Japan
| | - Andreas P M Weber
- the Institute for Plant Biochemistry, Cluster of Excellence on Plant Sciences, Heinrich-Heine University, Düsseldorf D-40225, Germany
| | - Akira Nozawa
- the Proteo-Science Center and the Venture Business Laboratory, Ehime University, Matsuyama 790-8577, Japan
| | - Yuzuru Tozawa
- the Proteo-Science Center and the Venture Business Laboratory, Ehime University, Matsuyama 790-8577, Japan,
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11
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Paul AL, Denison FC, Schultz ER, Zupanska AK, Ferl RJ. 14-3-3 phosphoprotein interaction networks - does isoform diversity present functional interaction specification? FRONTIERS IN PLANT SCIENCE 2012; 3:190. [PMID: 22934100 PMCID: PMC3422896 DOI: 10.3389/fpls.2012.00190] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 08/02/2012] [Indexed: 05/02/2023]
Abstract
The 14-3-3 proteins have emerged as major phosphoprotein interaction proteins and thereby constitute a key node in the Arabidopsis Interactome Map, a node through which a large number of important signals pass. Throughout their history of discovery and description, the 14-3-3s have been described as protein families and there has been some evidence that the different 14-3-3 family members within any organism might carry isoform-specific functions. However, there has also been evidence for redundancy of 14-3-3 function, suggesting that the perceived 14-3-3 diversity may be the accumulation of neutral mutations over evolutionary time and as some 14-3-3 genes develop tissue or organ-specific expression. This situation has led to a currently unresolved question - does 14-3-3 isoform sequence diversity indicate functional diversity at the biochemical or cellular level? We discuss here some of the key observations on both sides of the resulting debate, and present a set of contrastable observations to address the theory functional diversity does exist among 14-3-3 isoforms. The resulting model suggests strongly that there are indeed functional specificities in the 14-3-3s of Arabidopsis. The model further suggests that 14-3-3 diversity and specificity should enter into the discussion of 14-3-3 roles in signal transduction and be directly approached in 14-3-3 experimentation. It is hoped that future studies involving 14-3-3s will continue to address specificity in experimental design and analysis.
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Affiliation(s)
- Anna-Lisa Paul
- Program in Plant Molecular and Cellular Biology, Horticultural Science Department, University of FloridaGainesville, FL, USA
| | - Fiona C. Denison
- Program in Plant Molecular and Cellular Biology, Horticultural Science Department, University of FloridaGainesville, FL, USA
| | - Eric R. Schultz
- Program in Plant Molecular and Cellular Biology, Horticultural Science Department, University of FloridaGainesville, FL, USA
| | - Agata K. Zupanska
- Program in Plant Molecular and Cellular Biology, Horticultural Science Department, University of FloridaGainesville, FL, USA
| | - Robert J. Ferl
- Program in Plant Molecular and Cellular Biology, Horticultural Science Department, University of FloridaGainesville, FL, USA
- Interdisciplinary Center for Biotechnology Research, University of FloridaGainesville, FL, USA
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12
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Sato Y, Horinouchi S, Ohnishi Y. Characterization of a thermostable adenosine 5'-monophosphate deaminase gene in Streptomyces murinus. J GEN APPL MICROBIOL 2012; 58:65-70. [PMID: 22449752 DOI: 10.2323/jgam.58.65] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Yukihide Sato
- Gifu R&D Center, Amano Enzyme, Inc., Kakamigahara, Gifu 509-0109, Japan
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13
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Minami S, Sato M, Shiraiwa Y, Iwamoto K. Molecular characterization of adenosine 5'-monophosphate deaminase--the key enzyme responsible for the umami taste of nori (Porphyra yezoensis Ueda, Rhodophyta). MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2011; 13:1140-1147. [PMID: 21519809 DOI: 10.1007/s10126-011-9377-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Accepted: 03/22/2011] [Indexed: 05/30/2023]
Abstract
The enzyme adenosine 5'-monophosphate deaminase (AMPD, EC 3.5.4.6) catalyzes the conversion of adenosine 5'-monophosphate to inosine 5'-mononucleotide (IMP). IMP is generally known as the compound responsible for the umami taste of the edible red alga Porphyra yezoensis Ueda that is known in Japan as nori. Therefore, we suspect that AMPD plays a key role in providing a favorable nori taste. In this study, we undertake the molecular characterization of nori-derived AMPD. The nori AMPD protein has a molecular mass of 55 kDa as estimated from both gel filtration and sodium dodecyl sulfate polyacrylamide gel electrophoresis. The calculated molecular mass from the amino acid sequence deduced from cDNA is 57.1 kDa. The isoelectric point is 5.71. The coding region of AMPD consists of 1,566 bp encoding 522 amino acids and possesses a transmembrane domain and two N-glycosylation sites. The sequence identity of nori AMPD in human and yeast AMPDs was found to be less than 50% and 20% in DNA and amino acid sequences, respectively. Proline in the conserved motif of [SA]-[LIVM]-[NGS]-[STA]-D-D-P was found to be converted to glutamate. These results indicate that nori AMPD is a novel type of AMPD.
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Affiliation(s)
- Seiko Minami
- Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 985-8555, Japan
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14
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Denison FC, Paul AL, Zupanska AK, Ferl RJ. 14-3-3 proteins in plant physiology. Semin Cell Dev Biol 2011; 22:720-7. [PMID: 21907297 DOI: 10.1016/j.semcdb.2011.08.006] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Accepted: 08/15/2011] [Indexed: 12/18/2022]
Abstract
Plant 14-3-3 isoforms, like their highly conserved homologues in mammals, function by binding to phosphorylated client proteins to modulate their function. Through the regulation of a diverse range of proteins including kinases, transcription factors, structural proteins, ion channels and pathogen defense-related proteins, they are being implicated in an expanding catalogue of physiological functions in plants. 14-3-3s themselves are affected, both transcriptionally and functionally, by the extracellular and intracellular environment of the plant. They can modulate signaling pathways that transduce inputs from the environment and also the downstream proteins that elicit the physiological response. This review covers some of the key emerging roles for plant 14-3-3s including their role in the response to the plant extracellular environment, particularly environmental stress, pathogens and light conditions. We also address potential key roles in primary metabolism, hormone signaling, growth and cell division.
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Affiliation(s)
- Fiona C Denison
- Department of Horticultural Sciences, University of Florida, Gainesville, FL 32611, United States
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15
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Petkovic M, Seddon KR, Rebelo LPN, Silva Pereira C. Ionic liquids: a pathway to environmental acceptability. Chem Soc Rev 2010; 40:1383-403. [PMID: 21116514 DOI: 10.1039/c004968a] [Citation(s) in RCA: 660] [Impact Index Per Article: 47.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ionic liquids were initially proposed as replacements for conventional organic solvents; however, their chemistry has developed remarkably and offers unexpected opportunities in numerous fields, ranging from electrochemistry to biology. As a consequence of ionic liquids advancing towards potential and actual applications, a comprehensive determination of their environmental, health and safety impact is now required. This critical review aims to present an overview of the current understanding of the toxicity and environmental impact of the principal ionic liquid groups, and highlights some emerging concerns. Each cation type is considered separately, examining the significance of the biological data, and identifying the most critical questions, some yet unresolved. The need for more, and more detailed, studies is highlighted (176 references).
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Affiliation(s)
- Marija Petkovic
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, 2780-157, Oeiras, Portugal
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16
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Lindell SD, Maechling S, Sabina RL. Synthesis and Biochemical Testing of 3-(Carboxyphenylethyl)imidazo[2,1-f][1,2,4]triazines as Inhibitors of AMP Deaminase. ACS Med Chem Lett 2010; 1:286-9. [PMID: 24900209 DOI: 10.1021/ml100092a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 06/09/2010] [Indexed: 11/29/2022] Open
Abstract
C-Ribosyl imidazo[2,1-f][1,2,4]triazines and 3-[2-(3-carboxyphenyl)ethyl]-3,6,7,8-tetrahydroimidazo[4,5-d][1,3]diazepin-8-ols represent two classes of known AMP deaminase inhibitors. A combination of the aglycone from the former class with the ribose phosphate mimic from the latter led to the 3-[2-(3-carboxyphenyl)ethyl]imidazo[2,1-f][1,2,4]triazines, which represent a new class of AMP deaminase inhibitors. The best compound, 3-[2-(3-carboxy-5,6,7,8-tetrahydronaphthyl)ethyl]imidazo[2,1-f][1,2,4]triazine (8), was a good inhibitor of all three human AMPD recombinant isozymes (AMPD1, AMPD2, and AMPD3; IC50 = 0.9-5.7 μM) but a poor inhibitor of the plant recombinant enzyme (Arabidopsis FAC1; IC50 = 200 μM).
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Affiliation(s)
- Stephen D. Lindell
- Bayer CropScience AG, Werk Höchst, G836, D-65926 Frankfurt am Main, Germany
| | - Simon Maechling
- Bayer CropScience AG, Werk Höchst, G836, D-65926 Frankfurt am Main, Germany
| | - Richard L. Sabina
- Department of Biomedical Sciences, Oakland University William Beaumont School of Medicine, Rochester, Michigan 48309
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17
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Chevalier D, Morris ER, Walker JC. 14-3-3 and FHA domains mediate phosphoprotein interactions. ANNUAL REVIEW OF PLANT BIOLOGY 2009; 60:67-91. [PMID: 19575580 DOI: 10.1146/annurev.arplant.59.032607.092844] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Many aspects of plant growth and development require specific protein interactions to carry out biochemical and cellular functions. Several proteins mediate these interactions, two of which specifically recognize phosphoproteins: 14-3-3 proteins and proteins with FHA domains. These are the only phosphobinding domains identified in plants. Both domains are present in animals and plants, and are used by plant proteins to regulate metabolic, developmental, and signaling pathways. 14-3-3s regulate sugar metabolism, proton gradients, and control transcription factor localization. FHA domains are modular domains often found in multidomain proteins that are involved in signal transduction and plant development.
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Affiliation(s)
- David Chevalier
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, Missouri 65211, USA
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18
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Kirkman JK, Lindell SD, Maechling S, Slawin AMZ, Moody CJ. Synthesis of 3-(carboxyarylalkyl)imidazo[2,1-f][1,2,4]triazines as potential inhibitors of AMP deaminase. Org Biomol Chem 2008; 6:4452-9. [PMID: 19005607 DOI: 10.1039/b810850a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C-Ribosyl 1,2,4-triazolo[1,2,4]triazines which are able to undergo covalent hydration are of interest as potential inhibitors of AMP deaminase. In a search for compounds with improved bioavailability we have synthesized compounds in which the sugar has been replaced by carboxyarylalkyl based ribose phosphate mimics. The target carboxyarylalkyl imidazotriazines 11 and 12 were synthesized using a linear seven step sequence starting from simple benzoate derivatives. Alternatively, the hydroxyethyl imidazotriazine 39 is available in five steps and this synthon was used to prepare the imidazotriazines 34 and 48 in a short convergent manner.
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Affiliation(s)
- Joseph K Kirkman
- Department of Chemistry, School of Biological and Chemical Sciences, University of Exeter, Stocker Road, Exeter, EX4 4QD, UK
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19
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Riewe D, Grosman L, Zauber H, Wucke C, Fernie AR, Geigenberger P. Metabolic and developmental adaptations of growing potato tubers in response to specific manipulations of the adenylate energy status. PLANT PHYSIOLOGY 2008; 146:1579-98. [PMID: 18305207 PMCID: PMC2287335 DOI: 10.1104/pp.108.115758] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2008] [Accepted: 02/21/2008] [Indexed: 05/20/2023]
Abstract
Heterotrophic carbon metabolism has been demonstrated to be limited by oxygen availability in a variety of plant tissues, which in turn inevitably affects the adenylate status. To study the effect of altering adenylate energy metabolism, without changing the oxygen supply, we expressed a plastidially targeted ATP/ADP hydrolyzing phosphatase (apyrase) in tubers of growing potato (Solanum tuberosum) plants under the control of either inducible or constitutive promoters. Inducible apyrase expression in potato tubers, for a period of 24 h, resulted in a decrease in the ATP-content and the ATP-ADP ratio in the tubers. As revealed by metabolic profiling, this was accompanied by a decrease in the intermediates of sucrose to starch conversion and several plastidially synthesized amino acids, indicating a general depression of tuber metabolism. Constitutive tuber-specific apyrase expression did not lead to a reduction of ATP, but rather a decrease in ADP and an increase in AMP levels. Starch accumulation was strongly inhibited and shifted to the production of amylopectin instead of amylose in these tubers. Furthermore, the levels of almost all amino acids were decreased, although soluble sugars and hexose-Ps were highly abundant. Respiration was elevated in the constitutively expressing lines indicating a compensation for the dramatic increase in ATP hydrolysis. The increase in respiration did not affect the internal oxygen tensions in the tubers. However, the tubers developed a ginger-like phenotype having an elevated surface-volume ratio and a reduced mass per tuber. Decreased posttranslational redox activation of ADP-glucose pyrophosphorylase and a shift in the ratio of soluble starch synthase activity to granule-bound starch synthase activity were found to be partially responsible for the alterations in starch structure and abundance. The activity of alcohol dehydrogenase was decreased and pyruvate decarboxylase was induced, but this was neither reflected by an increase in fermentation products nor in the cellular redox state, indicating that fermentation was not yet induced in the transgenic lines. When taken together the combined results of these studies allow the identification of both short- and long-term adaptation of plant metabolism and development to direct changes in the adenylate status.
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Affiliation(s)
- David Riewe
- Max-Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany
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