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Ferreira-Neto JRC, da Silva MD, Binneck E, Vilanova ECR, de Melo ALTM, da Silva JB, de Melo NF, Pandolfi V, Benko-Iseppon AM. From Genes to Stress Response: Genomic and Transcriptomic Data Suggest the Significance of the Inositol and Raffinose Family Oligosaccharide Pathways in Stylosanthes scabra, Adaptation to the Caatinga Environment. PLANTS (BASEL, SWITZERLAND) 2024; 13:1749. [PMID: 38999589 PMCID: PMC11243744 DOI: 10.3390/plants13131749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 05/27/2024] [Accepted: 06/19/2024] [Indexed: 07/14/2024]
Abstract
S. scabra is an important forage and extremophilic plant native to the Brazilian Caatinga semiarid region. It has only recently been subjected to omics-based investigations, and the generated datasets offer insights into biotechnologically significant candidates yet to be thoroughly examined. INSs (inositol and its derivatives) and RFO (raffinose oligosaccharide family) pathways emerge as pivotal candidates, given their critical roles in plant physiology. The mentioned compounds have also been linked to negative impacts on the absorption of nutrients in mammals, affecting overall nutritional intake and metabolism. Therefore, studying these metabolic pathways is important not just for plants but also for animals who depend on them as part of their diet. INS and RFO pathways in S. scabra stood out for their abundance of identified loci and enzymes. The enzymes exhibited genomic redundancy, being encoded by multiple loci and various gene families. The phylogenomic analysis unveiled an expansion of the PIP5K and GolS gene families relative to the immediate S. scabra ancestor. These enzymes are crucial for synthesizing key secondary messengers and the RFO precursor, respectively. Transcriptional control of the studied pathways was associated with DOF-type, C2H2, and BCP1 transcription factors. Identification of biological processes related to INS and RFO metabolic routes in S. scabra highlighted their significance in responding to stressful conditions prevalent in the Caatinga environment. Finally, RNA-Seq and qPCR data revealed the relevant influence of genes of the INS and RFO pathways in the S. scabra response to water deprivation. Our study deciphers the genetics and transcriptomics of the INS and RFO in S. scabra, shedding light on their importance for a Caatinga-native plant and paving the way for future biotechnological applications in this species and beyond.
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Affiliation(s)
- José Ribamar Costa Ferreira-Neto
- Plant Genetics and Biotechnology Laboratory, Center of Biosciences, Genetics Department, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife 50670-901, PE, Brazil; (M.D.d.S.); (E.C.R.V.); (A.L.T.M.d.M.); (J.B.d.S.); (V.P.)
| | - Manassés Daniel da Silva
- Plant Genetics and Biotechnology Laboratory, Center of Biosciences, Genetics Department, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife 50670-901, PE, Brazil; (M.D.d.S.); (E.C.R.V.); (A.L.T.M.d.M.); (J.B.d.S.); (V.P.)
| | - Eliseu Binneck
- Embrapa Soja—Brazilian Agricultural Research Corporation (Embrapa), Rodovia Carlos João Strass–Distrito de Warta, Londrina 86085-981, PR, Brazil;
| | - Elayne Cristina Ramos Vilanova
- Plant Genetics and Biotechnology Laboratory, Center of Biosciences, Genetics Department, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife 50670-901, PE, Brazil; (M.D.d.S.); (E.C.R.V.); (A.L.T.M.d.M.); (J.B.d.S.); (V.P.)
| | - Ana Luíza Trajano Mangueira de Melo
- Plant Genetics and Biotechnology Laboratory, Center of Biosciences, Genetics Department, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife 50670-901, PE, Brazil; (M.D.d.S.); (E.C.R.V.); (A.L.T.M.d.M.); (J.B.d.S.); (V.P.)
| | - Jéssica Barboza da Silva
- Plant Genetics and Biotechnology Laboratory, Center of Biosciences, Genetics Department, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife 50670-901, PE, Brazil; (M.D.d.S.); (E.C.R.V.); (A.L.T.M.d.M.); (J.B.d.S.); (V.P.)
| | - Natoniel Franklin de Melo
- Embrapa Semiárido—Brazilian Agricultural Research Corporation (Embrapa), Rodovia BR-428, Km 152, s/n–Zona Rural, Petrolina 56302-970, PE, Brazil;
| | - Valesca Pandolfi
- Plant Genetics and Biotechnology Laboratory, Center of Biosciences, Genetics Department, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife 50670-901, PE, Brazil; (M.D.d.S.); (E.C.R.V.); (A.L.T.M.d.M.); (J.B.d.S.); (V.P.)
| | - Ana Maria Benko-Iseppon
- Plant Genetics and Biotechnology Laboratory, Center of Biosciences, Genetics Department, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife 50670-901, PE, Brazil; (M.D.d.S.); (E.C.R.V.); (A.L.T.M.d.M.); (J.B.d.S.); (V.P.)
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Bouard W, Ouellet F, Houde M. Modulation of the wheat transcriptome by TaZFP13D under well-watered and drought conditions. PLANT MOLECULAR BIOLOGY 2024; 114:16. [PMID: 38332456 PMCID: PMC10853348 DOI: 10.1007/s11103-023-01403-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 11/16/2023] [Indexed: 02/10/2024]
Abstract
Maintaining global food security in the context of climate changes will be an important challenge in the next century. Improving abiotic stress tolerance of major crops such as wheat can contribute to this goal. This can be achieved by the identification of the genes involved and their use to develop tools for breeding programs aiming to generate better adapted cultivars. Recently, we identified the wheat TaZFP13D gene encoding Zinc Finger Protein 13D as a new gene improving water-stress tolerance. The current work analyzes the TaZFP13D-dependent transcriptome modifications that occur in well-watered and dehydration conditions to better understand its function during normal growth and during drought. Plants that overexpress TaZFP13D have a higher biomass under well-watered conditions, indicating a positive effect of the protein on growth. Survival rate and stress recovery after a severe drought stress are improved compared to wild-type plants. The latter is likely due the higher activity of key antioxidant enzymes and concomitant reduction of drought-induced oxidative damage. Conversely, down-regulation of TaZFP13D decreases drought tolerance and protection against drought-induced oxidative damage. RNA-Seq transcriptome analysis identified many genes regulated by TaZFP13D that are known to improve drought tolerance. The analysis also revealed several genes involved in the photosynthetic electron transfer chain known to improve photosynthetic efficiency and chloroplast protection against drought-induced ROS damage. This study highlights the important role of TaZFP13D in wheat drought tolerance, contributes to unravel the complex regulation governed by TaZFPs, and suggests that it could be a promising marker to select wheat cultivars with higher drought tolerance.
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Affiliation(s)
- William Bouard
- Département des Sciences biologiques, Université du Québec à Montréal, Montréal, QC, H3C 3P8, Canada
| | - François Ouellet
- Département des Sciences biologiques, Université du Québec à Montréal, Montréal, QC, H3C 3P8, Canada
| | - Mario Houde
- Département des Sciences biologiques, Université du Québec à Montréal, Montréal, QC, H3C 3P8, Canada.
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Sharma P, Lakra N, Goyal A, Ahlawat YK, Zaid A, Siddique KHM. Drought and heat stress mediated activation of lipid signaling in plants: a critical review. FRONTIERS IN PLANT SCIENCE 2023; 14:1216835. [PMID: 37636093 PMCID: PMC10450635 DOI: 10.3389/fpls.2023.1216835] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 07/19/2023] [Indexed: 08/29/2023]
Abstract
Lipids are a principal component of plasma membrane, acting as a protective barrier between the cell and its surroundings. Abiotic stresses such as drought and temperature induce various lipid-dependent signaling responses, and the membrane lipids respond differently to environmental challenges. Recent studies have revealed that lipids serve as signal mediators forreducing stress responses in plant cells and activating defense systems. Signaling lipids, such as phosphatidic acid, phosphoinositides, sphingolipids, lysophospholipids, oxylipins, and N-acylethanolamines, are generated in response to stress. Membrane lipids are essential for maintaining the lamellar stack of chloroplasts and stabilizing chloroplast membranes under stress. However, the effects of lipid signaling targets in plants are not fully understood. This review focuses on the synthesis of various signaling lipids and their roles in abiotic stress tolerance responses, providing an essential perspective for further investigation into the interactions between plant lipids and abiotic stress.
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Affiliation(s)
- Parul Sharma
- Department of Botany and Plant Physiology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana, India
| | - Nita Lakra
- Department of Molecular Biology, Biotechnology and Bioinformatics, Chaudhary Charan Singh (CCS) Haryana Agricultural University, Hisar, India
| | - Alisha Goyal
- Division of Crop Improvement, Indian Council of Agricultural Research (ICAR)—Central Soil Salinity Research Institute, Karnal, India
| | - Yogesh K. Ahlawat
- Department of Biological Sciences, Michigan Technological University, Houghton, MI, United States
- Horticultural Sciences Department, University of Florida, Gainesville, FL, United States
| | - Abbu Zaid
- Plant Physiology and Biochemistry Section, Department of Botany, Aligarh Muslim University, Aligarh, India
- Department of Botany, Government Gandhi Memorial (GGM) Science College, Cluster University Jammu, Jammu, India
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Gao Y, Cui Y, Zhao R, Chen X, Zhang J, Zhao J, Kong L. Cryo-Treatment Enhances the Embryogenicity of Mature Somatic Embryos via the lncRNA-miRNA-mRNA Network in White Spruce. Int J Mol Sci 2022; 23:ijms23031111. [PMID: 35163033 PMCID: PMC8834816 DOI: 10.3390/ijms23031111] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/09/2022] [Accepted: 01/14/2022] [Indexed: 12/04/2022] Open
Abstract
In conifers, somatic embryogenesis is uniquely initiated from immature embryos in a narrow time window, which is considerably hindered by the difficulty to induce embryogenic tissue (ET) from other tissues, including mature somatic embryos. In this study, the embryogenic ability of newly induced ET and DNA methylation levels was detected, and whole-transcriptome sequencing analyses were carried out. The results showed that ultra-low temperature treatment significantly enhanced ET induction from mature somatic embryos, with the induction rate from 0.4% to 15.5%, but the underlying mechanisms remain unclear. The newly induced ET showed higher capability in generating mature embryos than the original ET. DNA methylation levels fluctuated during the ET induction process. Here, WGCNA analysis revealed that OPT4, TIP1-1, Chi I, GASA5, GST, LAX3, WRKY7, MYBS3, LRR-RLK, PBL7, and WIN1 genes are involved in stress response and auxin signal transduction. Through co-expression analysis, lncRNAs MSTRG.505746.1, MSTRG.1070680.1, and MSTRG.33602.1 might bind to pre-novel_miR_339 to promote the expression of WRKY7 genes for stress response; LAX3 could be protected by lncRNAs MSTRG.1070680.1 and MSTRG.33602.1 via serving as sponges for novel_miR_495 to initiate auxin signal transduction; lncRNAs MSTRG.505746.1, MSTRG.1070680.1, and MSTRG.33602.1 might serve as sponges for novel_miR_527 to enhance the expression of Chi I for early somatic embryo development. This study provides new insight into the area of stress-enhanced early somatic embryogenesis in conifers, which is also attributable to practical applications.
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Affiliation(s)
- Ying Gao
- National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (Y.G.); (Y.C.); (R.Z.); (X.C.); (J.Z.)
| | - Ying Cui
- National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (Y.G.); (Y.C.); (R.Z.); (X.C.); (J.Z.)
| | - Ruirui Zhao
- National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (Y.G.); (Y.C.); (R.Z.); (X.C.); (J.Z.)
| | - Xiaoyi Chen
- National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (Y.G.); (Y.C.); (R.Z.); (X.C.); (J.Z.)
| | - Jinfeng Zhang
- National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (Y.G.); (Y.C.); (R.Z.); (X.C.); (J.Z.)
| | - Jian Zhao
- National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (Y.G.); (Y.C.); (R.Z.); (X.C.); (J.Z.)
- Correspondence: (J.Z.); (L.K.)
| | - Lisheng Kong
- National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (Y.G.); (Y.C.); (R.Z.); (X.C.); (J.Z.)
- Centre for Forest Biology, Department of Biology, University of Victoria, Victoria, BC V8W 3N5, Canada
- Correspondence: (J.Z.); (L.K.)
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Devitt JK, Chung A, Schenk JJ. Inferring the genetic responses to acute drought stress across an ecological gradient. BMC Genomics 2022; 23:3. [PMID: 34983380 PMCID: PMC8725310 DOI: 10.1186/s12864-021-08178-w] [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: 12/01/2020] [Accepted: 11/16/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND How do xerophytic species thrive in environments that experience extreme annual drought? Although critical to the survival of many species, the genetic responses to drought stress in many non-model organisms has yet to be explored. We investigated this question in Mentzelia section Bartonia (Loasaceae), which occurs throughout western North America, including arid lands. To better understand the genetic responses to drought stress among species that occur in different habitats, the gene expression levels of three species from Mentzelia were compared across a precipitation gradient. Two de novo reference transcriptomes were generated and annotated. Leaf and root tissues were collected from control and drought shocked plants and compared to one another for differential expression. A target-gene approach was also implemented to better understand how drought-related genes from model and crop species function in non-model systems. RESULTS When comparing the drought-shock treatment plants to their respective control plants, we identified 165 differentially expressed clusters across all three species. Differentially expressed genes including those associated with water movement, photosynthesis, and delayed senescence. The transcriptome profiling approach was coupled with a target genes approach that measured expression of 90 genes associated with drought tolerance in model organisms. Comparing differentially expressed genes with a ≥ 2 log-fold value between species and tissue types showed significant differences in drought response. In pairwise comparisons, species that occurred in drier environments differentially expressed greater genes in leaves when drought shocked than those from wetter environments, but expression in the roots mostly produced opposite results. CONCLUSIONS Arid-adapted species mount greater genetic responses compared to the mesophytic species, which has likely evolved in response to consistent annual drought exposure across generations. Drought responses also depended on organ type. Xerophytes, for example, mounted a larger response in leaves to downregulate photosynthesis and senescence, while mobilizing carbon and regulating water in the roots. The complexity of drought responses in Mentzelia suggest that whole organism responses need to be considered when studying drought and, in particular, the physiological mechanisms in which plants regulate water, carbon, cell death, metabolism, and secondary metabolites.
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Affiliation(s)
- Jessica K Devitt
- Department of Biology, Georgia Southern University, Statesboro, GA, 30460, USA.
| | - Albert Chung
- Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA, 90095-7246, USA
| | - John J Schenk
- Department of Environmental and Plant Biology, Ohio University, Athens, OH, 457012979, USA
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6
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Riemer E, Pullagurla NJ, Yadav R, Rana P, Jessen HJ, Kamleitner M, Schaaf G, Laha D. Regulation of plant biotic interactions and abiotic stress responses by inositol polyphosphates. FRONTIERS IN PLANT SCIENCE 2022; 13:944515. [PMID: 36035672 PMCID: PMC9403785 DOI: 10.3389/fpls.2022.944515] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/20/2022] [Indexed: 05/14/2023]
Abstract
Inositol pyrophosphates (PP-InsPs), derivatives of inositol hexakisphosphate (phytic acid, InsP6) or lower inositol polyphosphates, are energy-rich signaling molecules that have critical regulatory functions in eukaryotes. In plants, the biosynthesis and the cellular targets of these messengers are not fully understood. This is because, in part, plants do not possess canonical InsP6 kinases and are able to synthesize PP-InsP isomers that appear to be absent in yeast or mammalian cells. This review will shed light on recent discoveries in the biosynthesis of these enigmatic messengers and on how they regulate important physiological processes in response to abiotic and biotic stresses in plants.
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Affiliation(s)
- Esther Riemer
- Departmentof Plant Nutrition, Institute of Crop Science and Resource Conservation, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
- *Correspondence: Esther Riemer,
| | | | - Ranjana Yadav
- Department of Biochemistry, Indian Institute of Science, Bengaluru, India
| | - Priyanshi Rana
- Department of Biochemistry, Indian Institute of Science, Bengaluru, India
| | - Henning J. Jessen
- Department of Chemistry and Pharmacy & CIBSS – The Center of Biological Signaling Studies, Albert-Ludwigs University Freiburg, Freiburg, Germany
| | - Marília Kamleitner
- Departmentof Plant Nutrition, Institute of Crop Science and Resource Conservation, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Gabriel Schaaf
- Departmentof Plant Nutrition, Institute of Crop Science and Resource Conservation, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Debabrata Laha
- Department of Biochemistry, Indian Institute of Science, Bengaluru, India
- Debabrata Laha,
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Rabbi SMHA, Kumar A, Mohajeri Naraghi S, Simsek S, Sapkota S, Solanki S, Alamri MS, Elias EM, Kianian S, Missaoui A, Mergoum M. Genome-Wide Association Mapping for Yield and Related Traits Under Drought Stressed and Non-stressed Environments in Wheat. Front Genet 2021; 12:649988. [PMID: 34239537 PMCID: PMC8258415 DOI: 10.3389/fgene.2021.649988] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 04/28/2021] [Indexed: 12/02/2022] Open
Abstract
Understanding the genetics of drought tolerance in hard red spring wheat (HRSW) in northern USA is a prerequisite for developing drought-tolerant cultivars for this region. An association mapping (AM) study for drought tolerance in spring wheat in northern USA was undertaken using 361 wheat genotypes and Infinium 90K single-nucleotide polymorphism (SNP) assay. The genotypes were evaluated in nine different locations of North Dakota (ND) for plant height (PH), days to heading (DH), yield (YLD), test weight (TW), and thousand kernel weight (TKW) under rain-fed conditions. Rainfall data and soil type of the locations were used to assess drought conditions. A mixed linear model (MLM), which accounts for population structure and kinship (PC+K), was used for marker–trait association. A total of 69 consistent QTL involved with drought tolerance-related traits were identified, with p ≤ 0.001. Chromosomes 1A, 3A, 3B, 4B, 4D, 5B, 6A, and 6B were identified to harbor major QTL for drought tolerance. Six potential novel QTL were identified on chromosomes 3D, 4A, 5B, 7A, and 7B. The novel QTL were identified for DH, PH, and TKW. The findings of this study can be used in marker-assisted selection (MAS) for drought-tolerance breeding in spring wheat.
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Affiliation(s)
- S M Hisam A Rabbi
- Department of Plant Sciences, North Dakota State University, Fargo, ND, United States
| | - Ajay Kumar
- Department of Plant Sciences, North Dakota State University, Fargo, ND, United States
| | | | - Senay Simsek
- Department of Plant Sciences, North Dakota State University, Fargo, ND, United States
| | - Suraj Sapkota
- Institute of Plant Breeding, Genetics, and Genomics, University of Georgia, Griffin, GA, United States
| | - Shyam Solanki
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, United States
| | - Mohammed S Alamri
- Department of Food Sciences and Nutrition, King Saud University, Riyadh, Saudi Arabia
| | - Elias M Elias
- Department of Plant Sciences, North Dakota State University, Fargo, ND, United States
| | - Shahryar Kianian
- United States Department of Agriculture-The Agricultural Research Service (USDA-ARS) Cereal Disease Laboratory, University of Minnesota, St. Paul, MN, United States
| | - Ali Missaoui
- Institute of Plant Breeding, Genetics, and Genomics, University of Georgia, Griffin, GA, United States.,Department of Crop and Soil Sciences, University of Georgia, Griffin, GA, United States
| | - Mohamed Mergoum
- Institute of Plant Breeding, Genetics, and Genomics, University of Georgia, Griffin, GA, United States.,Department of Crop and Soil Sciences, University of Georgia, Griffin, GA, United States
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Asakura H, Yamakawa T, Tamura T, Ueda R, Taira S, Saito Y, Abe K, Asakura T. Transcriptomic and Metabolomic Analyses Provide Insights into the Upregulation of Fatty Acid and Phospholipid Metabolism in Tomato Fruit under Drought Stress. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:2894-2905. [PMID: 33645220 DOI: 10.1021/acs.jafc.0c06168] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Transcriptome and metabolome analysis in tomato (Solanum lycopersicum) fruits cultivated under drought conditions showed that drought stress promoted fatty acid synthesis and increased the content of fatty acids in fruits. The accumulation of some phospholipids composed of palmitic acid and oleic acid also was significantly increased, especially in seeds. Moreover, inositol, which is a component of cell membranes and cell walls, was increased through the activity of the myoinositol monophosphatase 1-mediated pathway. In mature fruits, the levels of metabolic regulators such as β-alanine and 4-aminobutyric acid were elevated. These results showed that these compounds are drought-responsive and enhance drought tolerance and subsequently they could enhance the nutritional value and health benefits of tomato fruit.
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Affiliation(s)
- Hiroko Asakura
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Takashi Yamakawa
- Department of Global Agricultural Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Tomoko Tamura
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan
| | - Reiko Ueda
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Shu Taira
- Faculty of Food and Agricultural Sciences, Cluster of Agricultural Sciences, Fukushima University, Fukushima 960-1296, Japan
| | - Yoshikazu Saito
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Keiko Abe
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
- Life Science & Environmental Research Center (LiSE), Kanagawa Institute of Industrial Science and Technology (KISTEC), Ebina, Kanagawa 243-0435, Japan
| | - Tomiko Asakura
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
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Li Y, Si YT, He YX, Li JX. Comparative analysis of drought-responsive and -adaptive genes in Chinese wingnut (Pterocarya stenoptera C. DC). BMC Genomics 2021; 22:155. [PMID: 33663380 PMCID: PMC7934232 DOI: 10.1186/s12864-021-07470-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 02/23/2021] [Indexed: 12/02/2022] Open
Abstract
Background Drought is the main stress factor for the cultivation of Pterocarya stenoptera in urban areas, and this factor will cause its dehydration and affect its growth. Identifying drought-related genes will be useful for understanding the drought adaptation mechanism of P. stenoptera. Results We used physiological indicator detection, comparative transcriptome sequencing, and reanalysis on the results of previous landscape genomics studies to investigate the drought adaptation mechanism in P. stenoptera. The changes in malondialdehyde content showed that P. stenoptera was remarkably affected by drought stress, and the increase in soluble sugar content suggested its important role in response to drought stress. Results of comparative transcriptome sequencing showed that P. stenoptera initiated a series of programs, such as increasing the gene expression of unsaturated fatty acids, tyrosine, and plant pathogen resistance, to deal with the transient drought stress. According to the annotated results in a previous study, P. stenoptera adapts to the long-term differential drought stress by regulating the thickness of cell walls and expressing upper or lower limits of the downstream genes in the hormone signaling pathway. Through the comparative analysis of drought-responsive and -adaptive genes in P. stenoptera, this study supports the hypothesis that the environment-responsive genes (ERGs) introduced by the transient environmental stresses will be substantially more than the environment-adaptive genes (EAGs) in response to long-term differential environmental stresses, and the EAGs are not necessarily ERGs. Conclusions Our study identified drought-responsive and -adaptive genes in P. stenoptera and revealed that P. stenoptera increased the gene expression of unsaturated fatty acids, tyrosine, and plant pathogen resistance in response to transient drought stress. This study reveals the different adaptation mechanism of P. stenoptera under the transient and long-term differential drought stresses. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07470-z.
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Affiliation(s)
- Yong Li
- Innovation Platform of Molecular Biology, College of Landcape and Art, Henan Agricultural University, Zhengzhou, China.
| | - Yu-Tao Si
- Innovation Platform of Molecular Biology, College of Landcape and Art, Henan Agricultural University, Zhengzhou, China
| | - Yan-Xia He
- School of Life Sciences, Henan University, Kaifeng, China
| | - Jia-Xin Li
- Innovation Platform of Molecular Biology, College of Landcape and Art, Henan Agricultural University, Zhengzhou, China
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Jiang M, Liu Y, Li R, Li S, Tan Y, Huang J, Shu Q. An Inositol 1, 3, 4, 5, 6-Pentakisphosphate 2-Kinase 1 Mutant with a 33-nt Deletion Showed Enhanced Tolerance to Salt and Drought Stress in Rice. PLANTS 2020; 10:plants10010023. [PMID: 33374298 PMCID: PMC7824669 DOI: 10.3390/plants10010023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/22/2020] [Accepted: 12/22/2020] [Indexed: 01/24/2023]
Abstract
OsIPK1 encodes inositol 1,3,4,5,6-pentakisphosphate 2-kinase, which catalyzes the conversion of myo-inositol-1,3,4,5,6-pentakisphosphate to myo-inositol-1,2,3,4,5,6-hexakisphosphate (IP6) in rice. By clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated protein (Cas9)-mediated mutagenesis in the 3rd exon of the gene, three OsIPK1 mutations, i.e., osipk1_1 (a 33-nt deletion), osipk1_2 (a 1-nt deletion), and osipk1_3 (a 2-nt deletion) were identified in T0 plants of the rice line Xidao #1 (wild type, WT). A transfer DNA free line with the homozygous osipk1_1 mutation was developed; however, no homozygous mutant lines could be developed for the other two mutations. The comparative assay showed that the osipk1_1 mutant line had a significantly lower level of phytic acid (PA, IP6; −19.5%) in rice grain and agronomic traits comparable to the WT. However, the osipk1_1 mutant was more tolerant to salt and drought stresses than the WT, with significantly lower levels of inositol triphosphate (IP3), reactive oxygen species (ROS) and induced IP6, and higher activities of antioxidant enzymes in seedlings subjected to these stresses. Further analyses showed that the transcription of stress response genes was significantly upregulated in the osipk1_1 mutant under stress. Thus, the low phytic acid mutant osipk1_1 should have potential applications in rice breeding and production.
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Affiliation(s)
- Meng Jiang
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou 310058, China; (M.J.); (Y.L.); (S.L.); (Y.T.); (J.H.)
- Hainan Institute of Zhejiang University, Yongyou Industry Park, Yazhou Bay Sci-Tech City, Sanya 572000, China
| | - Yanhua Liu
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou 310058, China; (M.J.); (Y.L.); (S.L.); (Y.T.); (J.H.)
| | - Ruiqing Li
- College of Agronomy, Anhui Agricultural University, Hefei 230036, China;
| | - Shan Li
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou 310058, China; (M.J.); (Y.L.); (S.L.); (Y.T.); (J.H.)
| | - Yuanyuan Tan
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou 310058, China; (M.J.); (Y.L.); (S.L.); (Y.T.); (J.H.)
| | - Jianzhong Huang
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou 310058, China; (M.J.); (Y.L.); (S.L.); (Y.T.); (J.H.)
- Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou 310058, China
| | - Qingyao Shu
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou 310058, China; (M.J.); (Y.L.); (S.L.); (Y.T.); (J.H.)
- Hainan Institute of Zhejiang University, Yongyou Industry Park, Yazhou Bay Sci-Tech City, Sanya 572000, China
- Correspondence:
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Na JK, Metzger JD. A putative tomato inositol polyphosphate 5-phosphatase, Le5PT1, is involved in plant growth and abiotic stress responses. 3 Biotech 2020; 10:28. [PMID: 31950007 DOI: 10.1007/s13205-019-2023-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 12/20/2019] [Indexed: 12/16/2022] Open
Abstract
Based on sequence similarity to Arabidopsis inositol polyphosphate 5-phosphatases (5PTases) involved in abiotic stress responses and development, four tomato cDNAs (Le5PT1-4) encoding putative 5PTase proteins were identified. The predicted protein sequences of the Le5PTs include conserved catalytic domains required for 5PTase enzyme activity. Le5PT1, 2, and 3 showed high amino acid sequence identity with At5PTase2, At5PTase1 and At5PTase3, and At5PTase5 and At5PTase6, respectively. The expression of Le5PT1 was downregulated soon after initiation of dehydration and salt stress as well as exposure to polyethylene glycol (PEG) and NaCl, but not by exogenous ABA treatment. On the other hand, the expression of Le5PT2 gradually increased with time in all treatments. Transgenic tobacco plants overexpressing Le5PT1 exhibited reduced growth in height, leaf area, and dry weight compared to wild type plants. Transgenic plants also had lower water use efficiency (WUE) than wild type and the downregulation of the drought-responsive gene, NtERD10B. Together these results suggest that Le5PT1 may have a negative role in response to water deficit through the repression of drought-inducible genes that in turn affects plant growth and development.
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Affiliation(s)
- Jong-Kuk Na
- 1Depeatment of Controlled Agriculture, Kangwon National University, Chuncheon, Republic of Korea
- 2Department of Horticulture and Crop Science, Ohio State University, Columbus, OH 43210 USA
| | - James D Metzger
- 2Department of Horticulture and Crop Science, Ohio State University, Columbus, OH 43210 USA
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Li P, Li B, Seneweera S, Zong Y, Li FY, Han Y, Hao X. Photosynthesis and yield response to elevated CO 2, C 4 plant foxtail millet behaves similarly to C 3 species. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 285:239-247. [PMID: 31203889 DOI: 10.1016/j.plantsci.2019.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/28/2019] [Accepted: 05/08/2019] [Indexed: 05/14/2023]
Abstract
Foxtail millet (Setaria italica) is a nutrient-rich food source traditionally grown in arid and semi-arid areas, as it is well adapted to drought climate. Yet there is limited information as how the crop responses to the changing climate. In order to investigate the response of foxtail millet to elevated [CO2] and the underlying mechanism, the crop was grown at ambient [CO2] (400 μmol mol-1) and elevated [CO2] (600 μmol mol-1) in an open-top chamber (OTC) experimental facility in North China. The changes in leaf photosynthesis, chlorophyll fluorescence, biomass, yield and global gene expression in response to elevated [CO2] were determined. Despite foxtail millet being a C4 photosynthetic crop, photosynthetic rates (PN) and intrinsic water-use efficiency (WUEi), were increased under elevated [CO2]. Similarly, grain yield and above-ground biomass also significantly increased (P < 0.05) for the two years of experimentation under elevated [CO2]. Increases in seeds and tiller number, spike and stem weight were the main contributors to the increased grain yield and biomass. Using transcriptomic analyses, this study further identified some genes which play a role in cell wall reinforcement, shoot initiation, stomatal conductance, carbon fixation, glycolysis / gluconeogenesis responsive to elevated [CO2]. Changes in these genes reduced plant height, increased stem diameters, and promote CO2 fixation. Higher photosynthetic rates at elevated [CO2] demonstrated that foxtail millet was not photosynthetically saturated at elevated [CO2] and its photosynthesis response to elevated [CO2] were analogous to C3 plants.
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Affiliation(s)
- Ping Li
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China; Shanxi Key Laboratory of Genetic Resources and Genetic Improvement of Minor Crops, Taigu 030801, Shanxi, China
| | - Bingyan Li
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Saman Seneweera
- National Institute of Fundamental Studies, Kandy 20000, Sri Lanka
| | - Yuzheng Zong
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Frank Yonghong Li
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China; Ecology, College of Life Sciences, Inner Mongolia University, Huhehot 010021, China
| | - Yuanhuai Han
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China; Shanxi Key Laboratory of Genetic Resources and Genetic Improvement of Minor Crops, Taigu 030801, Shanxi, China; Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Taiyuan 030031, Shanxi, China
| | - Xingyu Hao
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China.
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Akbudak MA, Filiz E. Whirly (Why) transcription factors in tomato (Solanum lycopersicum L.): genome-wide identification and transcriptional profiling under drought and salt stresses. Mol Biol Rep 2019; 46:4139-4150. [PMID: 31089915 DOI: 10.1007/s11033-019-04863-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 05/06/2019] [Indexed: 01/02/2023]
Abstract
Whirly (Why) transcription factor (TFs) constitute one of the important TF families which plays essential roles in plant metabolism to cope with environmental stresses. In the present study, Why genes were identified at genome-wide scale in tomato (Solanum lycopersicum), and bioinformatics analyses were implemented. Validation of Why genes expressions under drought and salt stresses were also performed using RT-qPCR. The analyses revealed the presence of two Why genes in tomato genome, SlWhy1 (Solyc05g007100.2.1) and SlWhy2 (Solyc11g044750.1.1). Both genes contained Whirly transcription factor domain structure (PF08536), and Why proteins were in basic character (pI ≥ 7). While the lengths of the proteins ranged from 268 to 236 amino acid residues for SlWhy1 and SlWhy2 respectively, exon numbers identified in both genes were seven. According to the digital expression data, SlWhy genes are expressed at medium level in different anatomical parts and developmental stages. In the promotor sequence analysis, 13 types of putative TF binding sites were identified, and the highest motif number was 46, found for GATA TF. Gene co-expression analyses revealed that complex networks for SlWhy genes, which are connected with various metabolic pathways. Based on the RT-qPCR data, both SlWhy1 and SlWhy2 genes were up-regulated under salt and drought stresses. 3D structure analyses revealed that SlWhy1 protein had a more diverged structure than SlWhy2 protein, based on their comparisons in Arabidopsis and potato. The results obtained in the present study could be a useful scientific basis for understanding Why genes in tomato and their functions under abiotic stress conditions.
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Affiliation(s)
- M Aydın Akbudak
- Department of Agricultural Biotechnology, Akdeniz University, Antalya, Turkey.
| | - Ertugrul Filiz
- Department of Crop and Animal Production, Cilimli Vocational School, Duzce University, 81750, Duzce, Cilimli, Turkey.
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Ximénez-Embún MG, González-Guzmán M, Arbona V, Gómez-Cadenas A, Ortego F, Castañera P. Plant-Mediated Effects of Water Deficit on the Performance of Tetranychus evansi on Tomato Drought-Adapted Accessions. FRONTIERS IN PLANT SCIENCE 2018; 9:1490. [PMID: 30386357 PMCID: PMC6199365 DOI: 10.3389/fpls.2018.01490] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 09/25/2018] [Indexed: 05/25/2023]
Abstract
Climate change is expected to increase drought periods and the performance and dispersal of some invasive species such as Tetranychus evansi, which has been reported to take advantage of the nutritional changes induced by water-shortage on the tomato cultivar Moneymaker (MM). We have examined the implications for mite's biology of four accessions of the drought-adapted tomatoes, "Tomàtiga de Ramellet" (TR), under moderate drought stress. Mite performance was enhanced by drought in two accessions (TR61 and TR154), but not in the other two accessions (TR58 and TR126). We selected one accession of each outcome (i.e., TR154 and TR126) to further analyze plant nutritional parameters. We found that free sugars and most essential amino acids for mites were induced by drought and/or mite infestation on MM and TR154 plants, whereas sugars were not altered and a reduced number of essential amino acids were induced by drought in TR126. Remarkably, mite performance was enhanced by leaf infiltration of free sugars, essential amino acids mixture, and L-proline on well-watered MM and by free sugars on drought-stressed TR126 plants. These results indicate a positive link between the induction of soluble carbohydrates and amino acids used by the plant for osmotic adjustment and mite performance. The effects of drought and/or mite infestation on the defense response of plants was analyzed at three levels: phytohormone accumulation, the transcript levels of marker genes linked to jasmonates (JAs), salicylic acid (SA), and abscisic acid (ABA) pathways, and the activity of defense proteins. The ability of T. evansi to downregulate the accumulation of defense-related phytohormones was noted on MM and the two TR accessions analyzed (TR126 and TR154), though differences in the induction of protein defense genes and activities by drought and/or mite infestation were observed among them. These results emphasize the importance of studying plant biotic and abiotic stress factors in combination and provides an experimental framework for screening drought-tolerant tomato accessions that will be also resistant to herbivore mites.
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Affiliation(s)
- Miguel G. Ximénez-Embún
- Laboratorio de Interacción Planta-Insecto, Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas, CSIC, Madrid, Spain
| | - Miguel González-Guzmán
- Laboratorio de Interacción Planta-Insecto, Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas, CSIC, Madrid, Spain
| | - Vicent Arbona
- Ecofisiologia i Biotecnologia, Departament de Ciències Agràries i del Medi Natural, Universitat Jaume I, Castellón de la Plana, Spain
| | - Aurelio Gómez-Cadenas
- Ecofisiologia i Biotecnologia, Departament de Ciències Agràries i del Medi Natural, Universitat Jaume I, Castellón de la Plana, Spain
| | - Félix Ortego
- Laboratorio de Interacción Planta-Insecto, Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas, CSIC, Madrid, Spain
| | - Pedro Castañera
- Laboratorio de Interacción Planta-Insecto, Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas, CSIC, Madrid, Spain
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15
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Razali R, Bougouffa S, Morton MJL, Lightfoot DJ, Alam I, Essack M, Arold ST, Kamau AA, Schmöckel SM, Pailles Y, Shahid M, Michell CT, Al-Babili S, Ho YS, Tester M, Bajic VB, Negrão S. The Genome Sequence of the Wild Tomato Solanum pimpinellifolium Provides Insights Into Salinity Tolerance. FRONTIERS IN PLANT SCIENCE 2018; 9:1402. [PMID: 30349549 PMCID: PMC6186997 DOI: 10.3389/fpls.2018.01402] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 09/04/2018] [Indexed: 05/19/2023]
Abstract
Solanum pimpinellifolium, a wild relative of cultivated tomato, offers a wealth of breeding potential for desirable traits such as tolerance to abiotic and biotic stresses. Here, we report the genome assembly and annotation of S. pimpinellifolium 'LA0480.' Moreover, we present phenotypic data from one field experiment that demonstrate a greater salinity tolerance for fruit- and yield-related traits in S. pimpinellifolium compared with cultivated tomato. The 'LA0480' genome assembly size (811 Mb) and the number of annotated genes (25,970) are within the range observed for other sequenced tomato species. We developed and utilized the Dragon Eukaryotic Analyses Platform (DEAP) to functionally annotate the 'LA0480' protein-coding genes. Additionally, we used DEAP to compare protein function between S. pimpinellifolium and cultivated tomato. Our data suggest enrichment in genes involved in biotic and abiotic stress responses. To understand the genomic basis for these differences in S. pimpinellifolium and S. lycopersicum, we analyzed 15 genes that have previously been shown to mediate salinity tolerance in plants. We show that S. pimpinellifolium has a higher copy number of the inositol-3-phosphate synthase and phosphatase genes, which are both key enzymes in the production of inositol and its derivatives. Moreover, our analysis indicates that changes occurring in the inositol phosphate pathway may contribute to the observed higher salinity tolerance in 'LA0480.' Altogether, our work provides essential resources to understand and unlock the genetic and breeding potential of S. pimpinellifolium, and to discover the genomic basis underlying its environmental robustness.
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Affiliation(s)
- Rozaimi Razali
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Salim Bougouffa
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Mitchell J. L. Morton
- Division of Biological and Environmental Sciences and Engineering, The Bioactives Lab, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Damien J. Lightfoot
- Division of Biological and Environmental Sciences and Engineering, The Bioactives Lab, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Intikhab Alam
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Division of Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Magbubah Essack
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Stefan T. Arold
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Division of Biological and Environmental Sciences and Engineering, The Bioactives Lab, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Allan A. Kamau
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Division of Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Sandra M. Schmöckel
- Division of Biological and Environmental Sciences and Engineering, The Bioactives Lab, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Yveline Pailles
- Division of Biological and Environmental Sciences and Engineering, The Bioactives Lab, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Mohammed Shahid
- International Center for Biosaline Agriculture, Dubai, United Arab Emirates
| | - Craig T. Michell
- Red Sea Research Center, Biological and Environmental Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Salim Al-Babili
- Division of Biological and Environmental Sciences and Engineering, The Bioactives Lab, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Yung Shwen Ho
- Division of Biological and Environmental Sciences and Engineering, The Bioactives Lab, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Mark Tester
- Division of Biological and Environmental Sciences and Engineering, The Bioactives Lab, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Vladimir B. Bajic
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Division of Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Sónia Negrão
- Division of Biological and Environmental Sciences and Engineering, The Bioactives Lab, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
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16
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Bruňáková K, Čellárová E. Modulation of anthraquinones and phloroglucinols biosynthesis in Hypericum spp. by cryogenic treatment. J Biotechnol 2017; 251:59-67. [DOI: 10.1016/j.jbiotec.2017.04.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/17/2017] [Accepted: 04/12/2017] [Indexed: 02/01/2023]
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17
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Alimohammadi M, Lahiani MH, McGehee D, Khodakovskaya M. Polyphenolic extract of InsP 5-ptase expressing tomato plants reduce the proliferation of MCF-7 breast cancer cells. PLoS One 2017; 12:e0175778. [PMID: 28448505 PMCID: PMC5407797 DOI: 10.1371/journal.pone.0175778] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Accepted: 03/09/2017] [Indexed: 01/15/2023] Open
Abstract
In recent years, by extensive achievements in understanding the mechanisms and the pathways affected by cancer, the focus of cancer research is shifting from developing new chemotherapy methods to using natural compounds with therapeutic properties to reduce the adverse effects of synthetic drugs on human health. We used fruit extracts from previously generated human type I InsP 5-ptase gene expressing transgenic tomato plants for assessment of the anti-cancer activity of established genetically modified tomato lines. Cellular assays (MTT, Fluorescent microscopy, Flow Cytometry analysis) were used to confirm that InsP 5-ptase fruit extract was more effective for reducing the proliferation of breast cancer cells compared to wild-type tomato fruit extract. Metabolome analysis of InsP 5-ptase expressing tomato fruits performed by LC-MS identified tomato metabolites that may play a key role in the increased anti-cancer activity observed for the transgenic fruits. Total transcriptome analysis of cancer cells (MCF-7 line) exposed to an extract of transgenic fruits revealed a number of differently regulated genes in the cells treated with transgenic extract compared to untreated cells or cells treated with wild-type tomato extract. Together, this data demonstrate the potential role of the plant derived metabolites in suppressing cell viability of cancer cells and further prove the potential application of plant genetic engineering in the cancer research and drug discovery.
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Affiliation(s)
- Mohammad Alimohammadi
- Department of Biology, University of Arkansas at Little Rock, Little Rock, Arkansas, United States of America
| | - Mohamed Hassen Lahiani
- Department of Biology, University of Arkansas at Little Rock, Little Rock, Arkansas, United States of America
| | - Diamond McGehee
- Department of Biology, University of Arkansas at Little Rock, Little Rock, Arkansas, United States of America
| | - Mariya Khodakovskaya
- Department of Biology, University of Arkansas at Little Rock, Little Rock, Arkansas, United States of America
- Institute of Biology and Soil Sciences, Far-Eastern Branch of Russian Academy of Sciences, Vladivostok, Russia
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18
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Hou Q, Ufer G, Bartels D. Lipid signalling in plant responses to abiotic stress. PLANT, CELL & ENVIRONMENT 2016; 39:1029-48. [PMID: 26510494 DOI: 10.1111/pce.12666] [Citation(s) in RCA: 317] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 10/16/2015] [Accepted: 10/19/2015] [Indexed: 05/18/2023]
Abstract
Lipids are one of the major components of biological membranes including the plasma membrane, which is the interface between the cell and the environment. It has become clear that membrane lipids also serve as substrates for the generation of numerous signalling lipids such as phosphatidic acid, phosphoinositides, sphingolipids, lysophospholipids, oxylipins, N-acylethanolamines, free fatty acids and others. The enzymatic production and metabolism of these signalling molecules are tightly regulated and can rapidly be activated upon abiotic stress signals. Abiotic stress like water deficit and temperature stress triggers lipid-dependent signalling cascades, which control the expression of gene clusters and activate plant adaptation processes. Signalling lipids are able to recruit protein targets transiently to the membrane and thus affect conformation and activity of intracellular proteins and metabolites. In plants, knowledge is still scarce of lipid signalling targets and their physiological consequences. This review focuses on the generation of signalling lipids and their involvement in response to abiotic stress. We describe lipid-binding proteins in the context of changing environmental conditions and compare different approaches to determine lipid-protein interactions, crucial for deciphering the signalling cascades.
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Affiliation(s)
- Quancan Hou
- University of Bonn IMBIO Bonn Germany, Kirschallee 1, Bonn, D-53115, Germany
| | - Guido Ufer
- University of Bonn IMBIO Bonn Germany, Kirschallee 1, Bonn, D-53115, Germany
| | - Dorothea Bartels
- University of Bonn IMBIO Bonn Germany, Kirschallee 1, Bonn, D-53115, Germany
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19
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Singh A, Bhatnagar N, Pandey A, Pandey GK. Plant phospholipase C family: Regulation and functional role in lipid signaling. Cell Calcium 2015; 58:139-46. [DOI: 10.1016/j.ceca.2015.04.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 04/04/2015] [Accepted: 04/06/2015] [Indexed: 01/03/2023]
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20
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Alimohammadi M, Lahiani MH, Khodakovskaya MV. Genetic reduction of inositol triphosphate (InsP₃) increases tolerance of tomato plants to oxidative stress. PLANTA 2015; 242:123-135. [PMID: 25893866 DOI: 10.1007/s00425-015-2289-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 03/27/2015] [Indexed: 06/04/2023]
Abstract
We demonstrate here that the reduction of InsP 3 , the key component of the phosphoinositol pathway, results in changes in ROS-scavenging machinery and, subsequently, increases the tolerance of tomato plants to light stress. Different plant stress signaling pathways share similar elements and, therefore, 'cross-talk' between the various pathways can exist. Links between the phosphoinositol signaling pathway and light signaling were recently found. Tomato plants expressing InsP 5-ptase and exhibiting reduction in the level of inositol 1,4,5-triphosphate (InsP3) demonstrated enhanced tolerance to stress caused by continuous light exposure. To understand the molecular basis of observed stress tolerance in tomato lines with decreased amount of InsP3, we monitored the expression of enzymatic antioxidants as well as important factors in light signaling associated with non-enzymatic antioxidants (secondary metabolites). Here, we demonstrated that InsP 5-ptase transgenic plants accumulate less hydroxide peroxide and maintain higher chlorophyll content during stress caused by continuous light exposure. This observation can be explained by documented activation of multiple enzymatic antioxidants (LeAPX1, SICAT2, LeSOD) at levels of gene expression and enzymatic activities during continuous light exposure. In addition, we noticed the up-regulation of photoreceptors LePHYB and LeCHS1, key enzymes in flavonoid biosynthesis pathway, transcription factors LeHY5, SIMYB12, and early light-inducible protein (LeELIP) genes in transgenic tomato seedlings exposed to blue or red light. Our study confirmed the existence of a correlation between phosphoinositol signaling pathway modification, increased tolerance to stress caused by continuous light exposure, activation of ROS-scavenging enzymes, and up-regulation of molecular activators of non-enzymatic antioxidants in InsP 5-ptase expressing tomato lines.
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21
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Horta LP, Braga MR, Lemos-Filho JP, Modolo LV. Organ-coordinated response of early post-germination mahogany seedlings to drought. TREE PHYSIOLOGY 2014; 34:355-366. [PMID: 24690672 DOI: 10.1093/treephys/tpu017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Water deficit tolerance during post-germination stages is critical for seedling recruitment. In this work, we studied the effect of water deficit on morphological and biochemical responses in different organs of newly germinated mahogany (Swietenia macrophylla King) seedlings, a woody species that occurs in the Amazon rainforest. The root : shoot ratio increased under water deficit. The leaf number and water potential were not altered, although reductions in leaf area and stomatal conductance were observed. Osmotic potential became more negative in leaves of seedlings under severe stress. Water deficit increased fructose, glucose, sucrose and myo-inositol levels in leaves. Stems accumulated fructose, glucose and l-proline. Nitric oxide (NO) levels increased in the vascular cylinder of roots under severe stress while superoxide anion levels decreased due to augmented superoxide dismutase activity in this organ. Water deficit induced glutathione reductase activity in both roots and stems. Upon moderate or severe stress, catalase activity decreased in leaves and remained unaffected in the other seedling organs, allowing for an increase of hydrogen peroxide (H2O2) levels in leaves. Overall, the increase of signaling molecules in distinct organs-NO in roots, l-proline in stems and H2O2 and myo-inositol in leaves-contributed to the response of mahogany seedlings to water deficit by triggering biochemical processes that resulted in the attenuation of oxidative stress and the establishment of osmotic adjustment. Therefore, this body of evidence reveals that the development of newly germinated mahogany seedlings may occur in both natural habitats and crop fields even when water availability is greatly limited.
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Affiliation(s)
- Lívia P Horta
- Grupo de Estudos em Bioquímica de Plantas (GEBioPlan), Departamento de Botânica, ICB, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
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PI-PLC: Phosphoinositide-Phospholipase C in Plant Signaling. SIGNALING AND COMMUNICATION IN PLANTS 2014. [DOI: 10.1007/978-3-642-42011-5_2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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23
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Pokotylo I, Kolesnikov Y, Kravets V, Zachowski A, Ruelland E. Plant phosphoinositide-dependent phospholipases C: variations around a canonical theme. Biochimie 2013; 96:144-57. [PMID: 23856562 DOI: 10.1016/j.biochi.2013.07.004] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 07/04/2013] [Indexed: 01/01/2023]
Abstract
Phosphoinositide-specific phospholipase C (PI-PLC) cleaves, in a Ca(2+)-dependent manner, phosphatidylinositol-4,5-bisphosphate (PI-4,5-P2) into diacylglycerol (DAG) and inositol triphosphate (IP3). PI-PLCs are multidomain proteins that are structurally related to the PI-PLCζs, the simplest animal PI-PLCs. Like these animal counterparts, they are only composed of EF-hand, X/Y and C2 domains. However, plant PI-PLCs do not have a conventional EF-hand domain since they are often truncated, while some PI-PLCs have no EF-hand domain at all. Despite this simple structure, plant PI-PLCs are involved in many essential plant processes, either associated with development or in response to environmental stresses. The action of PI-PLCs relies on the mediators they produce. In plants, IP3 does not seem to be the sole active soluble molecule. Inositol pentakisphosphate (IP5) and inositol hexakisphosphate (IP6) also transmit signals, thus highlighting the importance of coupling PI-PLC action with inositol-phosphate kinases and phosphatases. PI-PLCs also produce a lipid molecule, but plant PI-PLC pathways show a peculiarity in that the active lipid does not appear to be DAG but its phosphorylated form, phosphatidic acid (PA). Besides, PI-PLCs can also act by altering their substrate levels. Taken together, plant PI-PLCs show functional differences when compared to their animal counterparts. However, they act on similar general signalling pathways including calcium homeostasis and cell phosphoproteome. Several important questions remain unanswered. The cross-talk between the soluble and lipid mediators generated by plant PI-PLCs is not understood and how the coupling between PI-PLCs and inositol-kinases or DAG-kinases is carried out remains to be established.
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Affiliation(s)
- Igor Pokotylo
- Institute of Bioorganic Chemistry and Petrochemistry, NAS of Ukraine, Kiev, Ukraine.
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24
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Gillaspy GE. The Role of Phosphoinositides and Inositol Phosphates in Plant Cell Signaling. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 991:141-57. [DOI: 10.1007/978-94-007-6331-9_8] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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25
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Heilmann I, Perera IY. Measurement of inositol (1,4,5) trisphosphate in plant tissues by a competitive receptor binding assay. Methods Mol Biol 2013; 1009:33-41. [PMID: 23681521 DOI: 10.1007/978-1-62703-401-2_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The phosphoinositide signaling pathway is important for plant responses to many different stresses. As part of the responses to a stimulus, InsP3 levels may increase rapidly and transiently. The receptor binding assay for InsP3 described here is easy to use and an ideal method to monitor and compare InsP3 levels in multiple samples from large scale experiments. The method is based on competitive binding of InsP3 to the mammalian brain InsP3 specific receptor protein. This chapter describes a protocol for extracting and neutralizing plant samples and performing the receptor binding assay (using a commercially available kit). The protocol described has been used effectively to monitor InsP3 levels in plant tissues of different origin and in response to different stresses.
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Affiliation(s)
- Ingo Heilmann
- Department of Cellular Biochemistry, Institute for Biochemistry and Biotechnology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
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26
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Regulation of Leaf Senescence: Role of Reactive Oxygen Species. PLASTID DEVELOPMENT IN LEAVES DURING GROWTH AND SENESCENCE 2013. [DOI: 10.1007/978-94-007-5724-0_17] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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27
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Lawlor DW. Genetic engineering to improve plant performance under drought: physiological evaluation of achievements, limitations, and possibilities. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:83-108. [PMID: 23162116 DOI: 10.1093/jxb/ers326] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Fully drought-resistant crop plants would be beneficial, but selection breeding has not produced them. Genetic modification of species by introduction of very many genes is claimed, predominantly, to have given drought resistance. This review analyses the physiological responses of genetically modified (GM) plants to water deficits, the mechanisms, and the consequences. The GM literature neglects physiology and is unspecific in definitions, which are considered here, together with methods of assessment and the type of drought resistance resulting. Experiments in soil with cessation of watering demonstrate drought resistance in GM plants as later stress development than in wild-type (WT) plants. This is caused by slower total water loss from the GM plants which have (or may have-morphology is often poorly defined) smaller total leaf area (LA) and/or decreased stomatal conductance (g (s)), associated with thicker laminae (denser mesophyll and smaller cells). Non-linear soil water characteristics result in extreme stress symptoms in WT before GM plants. Then, WT and GM plants are rewatered: faster and better recovery of GM plants is taken to show their greater drought resistance. Mechanisms targeted in genetic modification are then, incorrectly, considered responsible for the drought resistance. However, this is not valid as the initial conditions in WT and GM plants are not comparable. GM plants exhibit a form of 'drought resistance' for which the term 'delayed stress onset' is introduced. Claims that specific alterations to metabolism give drought resistance [for which the term 'constitutive metabolic dehydration tolerance' (CMDT) is suggested] are not critically demonstrated, and experimental tests are suggested. Small LA and g (s) may not decrease productivity in well-watered plants under laboratory conditions but may in the field. Optimization of GM traits to environment has not been analysed critically and is required in field trials, for example of recently released oilseed rape and maize which show 'drought resistance', probably due to delayed stress onset. Current evidence is that GM plants may not be better able to cope with drought than selection-bred cultivars.
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Affiliation(s)
- David W Lawlor
- Plant Biology & Crop Science, Rothamsted Research, Harpenden, Herts, AL5 2AJ, UK.
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Khanna-Chopra R. Leaf senescence and abiotic stresses share reactive oxygen species-mediated chloroplast degradation. PROTOPLASMA 2012; 249:469-81. [PMID: 21805384 DOI: 10.1007/s00709-011-0308-z] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Accepted: 07/19/2011] [Indexed: 05/18/2023]
Abstract
Leaf senescence is a genetically programmed decline in various cellular processes including photosynthesis and involves the hydrolysis of macromolecules such as proteins, lipids, etc. It is governed by the developmental age and is induced or enhanced by environmental stresses such as drought, heat, salinity and others. Internal factors such as reproductive structures also influence the rate of leaf senescence. Reactive oxygen species (ROS) generation is one of the earliest responses of plant cells under abiotic stresses and senescence. Chloroplasts are the main targets of ROS-linked damage during various environmental stresses and natural senescence as ROS detoxification systems decline with age. Plants adapt to environmental stresses through the process of acclimation, which involves less ROS production coupled with an efficient antioxidant defence. Chloroplasts are a major site of protein degradation, and ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) is rapidly and selectively degraded during senescence and stress. The process of protein degradation is initiated by ROS and involves the action of proteolytic enzymes such as cysteine and serine proteases. The mechanism of Rubisco degradation still remains to be elucidated. The molecular understanding of leaf senescence was achieved through the characterization of senescence-associated genes and various senescence mutants of Arabidopsis, which is a suitable model plant showing monocarpic senescence. The regulation of senescence involves many regulatory elements composed of positive and negative elements to fine-tune the initiation and progression of senescence. This review gives an overview on chloroplast protein degradation during leaf senescence and abiotic stresses and also highlights the role of ROS management in both processes.
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Affiliation(s)
- Renu Khanna-Chopra
- Stress Physiology and Biochemistry Laboratory, Water Technology Centre, Indian Agricultural Research Institute, New Delhi, 110012, India.
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Oraby H, Ahmad R. Physiological and biochemical changes of CBF3 transgenic oat in response to salinity stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2012; 185-186:331-9. [PMID: 22325896 DOI: 10.1016/j.plantsci.2012.01.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Revised: 01/06/2012] [Accepted: 01/06/2012] [Indexed: 05/06/2023]
Abstract
Salinity is a major abiotic constraint affecting oat productivity. Several physiological and biochemical traits have been found to be related to yield maintenance under salinity. The impact of introducing the Arabidopsis CBF3 gene controlled by the rd29A stress-inducible promoter in T(2) transgenic oat on salinity tolerance and associated physiological changes were studied. Compared with the non-transgenic control, transgenic T(2) plants exhibited greater growth and showed significant maintenance of leaf area, relative water content, chlorophyll content, photosynthetic and transpiration rates as well as increased levels of proline and soluble sugars under high salt stress. These physiological changes delayed leaf-wilting symptoms, increased tolerance and reduced yield loss. At a salinity stress level of 100mM, the CBF3-overexpressing transgenic oat showed a yield loss of 4-11% compared with >56% for the non-transgenic control. These results demonstrate that stress-inducible over-expression of CBF3 may have the potential to enhance abiotic stress tolerance in oat.
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Affiliation(s)
- Hesham Oraby
- Department of Plant Science, Laval University, Quebec, QC, Canada.
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30
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Khodakovskaya MV, de Silva K, Biris AS, Dervishi E, Villagarcia H. Carbon nanotubes induce growth enhancement of tobacco cells. ACS NANO 2012; 6:2128-35. [PMID: 22360840 DOI: 10.1021/nn204643g] [Citation(s) in RCA: 247] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Carbon nanotubes have shown promise as regulators of seed germination and plant growth. Here, we demonstrate that multiwalled carbon nanotubes (MWCNTs) have the ability to enhance the growth of tobacco cell culture (55-64% increase over control) in a wide range of concentrations (5-500 μg/mL). Activated carbon (AC) stimulated cell growth (16% increase) only at low concentrations (5 μg/mL) while dramatically inhibited the cellular growth at higher concentrations (100-500 μg/mL). We found a correlation between the activation of cells growth exposed to MWCNTs and the upregulation of genes involved in cell division/cell wall formation and water transport. The expression of the tobacco aquaporin (NtPIP1) gene, as well as production of the NtPIP1 protein, significantly increased in cells exposed to MWCNTs compared to control cells or those exposed to AC. The expression of marker genes for cell division (CycB) and cell wall extension (NtLRX1) was also up-regulated in cells exposed to MWCNTs compared to control cells or those exposed to activated carbon only.
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Affiliation(s)
- Mariya V Khodakovskaya
- Department of Applied Science, University of Arkansas at Little Rock, Arkansas 72204, USA.
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31
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Alimohammadi M, de Silva K, Ballu C, Ali N, Khodakovskaya MV. Reduction of inositol (1,4,5)-trisphosphate affects the overall phosphoinositol pathway and leads to modifications in light signalling and secondary metabolism in tomato plants. JOURNAL OF EXPERIMENTAL BOTANY 2012; 63:825-35. [PMID: 21994174 PMCID: PMC3254682 DOI: 10.1093/jxb/err306] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 08/26/2011] [Accepted: 08/30/2011] [Indexed: 05/07/2023]
Abstract
The phosphoinositol pathway is one of the major eukaryotic signalling pathways. The metabolite of the phosphoinositol pathway, inositol- (1,4,5) trisphosphate (InsP(3)), is a regulator of plant responses to a wide variety of stresses, including light, drought, cold, and salinity. It was found that the expression of InsP 5-ptase, the enzyme that hydrolyses InsP(3), also dramatically affects the levels of inositol phosphate metabolites and the secondary metabolites in transgenic tomato plants. Tomato plants expressing InsP 5-ptase exhibited a reduction in the levels of several important inositol phosphates, including InsP(1), InsP(2), InsP(3), and InsP(4). Reduced levels of inositol phosphates accompanied an increase in the accumulation of phenylpropanoids (rutin, chlorogenic acid) and ascorbic acid (vitamin C) in the transgenic fruits of tomato plants. The enhanced accumulation of these metabolites in transgenic tomato plants was in direct correspondence with the observed up-regulation of the genes that express the key enzymes of ascorbic acid metabolism (myo-inositol oxygenase, MIOX; L-galactono-γ-lactone dehydrogenase, GLDH) and phenylpropanoid metabolism (chalcone synthase, CHS1; cinnamoyl-CoA shikimate/quinate transferase, HCT). To understand the molecular links between the activation of different branches of plant metabolism and InsP(3) reduction in tomato fruits, the expression of transcription factors known to be involved in light signalling was analysed by real-time RT-PCR. The expression of LeHY5, SIMYB12, and LeELIP was found to be higher in fruits expressing InsP 5-ptase. These results suggest possible interconnections between phosphoinositol metabolism, light signalling, and secondary metabolism in plants. Our study also revealed the biotechnological potential for the genetic improvement of crop plants by the manipulation of the phosphoinositol pathway.
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Affiliation(s)
- Mohammad Alimohammadi
- Department of Applied Science, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
| | - Kanishka de Silva
- Department of Applied Science, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
| | - Clarisse Ballu
- Department of Applied Science, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
- CFAI EIA – ITII Poitou-Charentes, La Couronne, France, 16400
| | - Nawab Ali
- Graduate Institute of Technology, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
| | - Mariya V. Khodakovskaya
- Department of Applied Science, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
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Du H, Liu L, You L, Yang M, He Y, Li X, Xiong L. Characterization of an inositol 1,3,4-trisphosphate 5/6-kinase gene that is essential for drought and salt stress responses in rice. PLANT MOLECULAR BIOLOGY 2011; 77:547-63. [PMID: 22038091 DOI: 10.1007/s11103-011-9830-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Accepted: 09/12/2011] [Indexed: 05/06/2023]
Abstract
Drought and salt stresses are major limiting factors for crop production. To identify critical genes for stress resistance in rice (Oryza sativa L.), we screened T-DNA mutants and identified a drought- and salt-hypersensitive mutant dsm3. The mutant phenotype was caused by a T-DNA insertion in a gene encoding a putative inositol 1,3,4-trisphosphate 5/6-kinase previously named OsITPK2 with unknown function. Under drought stress conditions, the mutant had significantly less accumulation of osmolytes such as proline and soluble sugar and showed significantly reduced root volume, spikelet fertility, biomass, and grain yield; however, malondialdehyde level was increased in the mutant. Interestingly, overexpression of DSM3 (OsITPK2) in rice resulted in drought- and salt-hypersensitive phenotypes and physiological changes similar to those in the mutant. Inositol trisphosphate (IP3) level was decreased in the overexpressors under normal condition and drought stress. A few genes related to osmotic adjustment and reactive oxygen species scavenging were down-regulated in the mutant and overexpression lines. The expression level of DSM3 promoter-driven β-glucuronidase (GUS) reporter gene in rice was induced by drought, salt and abscisic acid. Protoplast transient expression assay indicated that DSM3 is an endoplasmic reticulum protein. Sequence analysis revealed six putative ITPKs in rice. Transcript level analysis of OsITPK genes revealed that they had different tempo-spatial expression patterns, and the responses of DSM3 to abiotic stresses, including drought, salinity, cold, and high temperature, were distinct from the other five members in rice. These results together suggest that DSM3/OsITPK2 is an important member of the OsITPK family for stress responses, and an optimal expression level is essential for drought and salt tolerance in rice.
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Affiliation(s)
- Hao Du
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, 430070 Wuhan, China
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Abstract
The simple polyol, myo-inositol, is used as a building block of a cellular language that plays various roles in signal transduction. This review describes the terminology used to denote myo-inositol-containing molecules, with an emphasis on how phosphate and fatty acids are added to create second messengers used in signaling. Work in model systems has delineated the genes and enzymes required for synthesis and metabolism of many myo-inositol-containing molecules, with genetic mutants and measurement of second messengers playing key roles in developing our understanding. There is increasing evidence that molecules such as myo- inositol(1,4,5)trisphosphate and phosphatidylinositol(4,5)bisphosphate are synthesized in response to various signals plants encounter. In particular, the controversial role of myo-inositol(1,4,5)trisphosphate is addressed, accompanied by a discussion of the multiple enzymes that act to regulate this molecule. We are also beginning to understand new connections of myo-inositol signaling in plants. These recent discoveries include the novel roles of inositol phosphates in binding to plant hormone receptors and that of phosphatidylinositol(3)phosphate binding to pathogen effectors.
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Affiliation(s)
- Glenda E Gillaspy
- Department of Biochemistry, Virginia Tech, Blacksburg, VA 24061, USA
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Complex genetic, photothermal, and photoacoustic analysis of nanoparticle-plant interactions. Proc Natl Acad Sci U S A 2010; 108:1028-33. [PMID: 21189303 DOI: 10.1073/pnas.1008856108] [Citation(s) in RCA: 206] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Understanding the nature of interactions between engineered nanomaterials and plants is crucial in comprehending the impact of nanotechnology on the environment and agriculture with a focus on toxicity concerns, plant disease treatment, and genetic engineering. To date, little progress has been made in studying nanoparticle-plant interactions at single nanoparticle and genetic levels. Here, we introduce an advanced platform integrating genetic, Raman, photothermal, and photoacoustic methods. Using this approach, we discovered that multiwall carbon nanotubes induce previously unknown changes in gene expression in tomato leaves and roots, particularly, up-regulation of the stress-related genes, including those induced by pathogens and the water-channel LeAqp2 gene. A nano-bubble amplified photothermal/photoacoustic imaging, spectroscopy, and burning technique demonstrated the detection of multiwall carbon nanotubes in roots, leaves, and fruits down to the single nanoparticle and cell level. Thus, our integrated platform allows the study of nanoparticles' impact on plants with higher sensitivity and specificity, compared to existing assays.
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Xue-Xuan X, Hong-Bo S, Yuan-Yuan M, Gang X, Jun-Na S, Dong-Gang G, Cheng-Jiang R. Biotechnological implications from abscisic acid (ABA) roles in cold stress and leaf senescence as an important signal for improving plant sustainable survival under abiotic-stressed conditions. Crit Rev Biotechnol 2010; 30:222-30. [PMID: 20572794 DOI: 10.3109/07388551.2010.487186] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In the past few years, the signal transduction of the plant hormone abscisic acid (ABA) has been studied extensively and has revealed an unanticipated complex. ABA, characterized as an intracellular messenger, has been proven to act a critical function at the heart of a signaling network operation. It has been found that ABA plays an important role in improving plant tolerance to cold, as well as triggering leaf senescence for years. In addition, there have been many reports suggesting that the signaling pathways for leaf senescence and plant defense responses may overlap. Therefore, the objective was to review what is known about the involvement of ABA signaling in plant responses to cold stress and regulation of leaf senescence. An overview about how ABA is integrated into sugars and reactive oxygen species signaling pathways, to regulate plant cold tolerance and leaf senescence, is provided. These roles can provide important implications for biotechnologically improving plant cold tolerance.
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Affiliation(s)
- X Xue-Xuan
- State Key Laboratory of Soil Erosion and Dryland Farming, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling, China
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36
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Boss WF, Sederoff HW, Im YJ, Moran N, Grunden AM, Perera IY. Basal signaling regulates plant growth and development. PLANT PHYSIOLOGY 2010; 154:439-43. [PMID: 20921159 PMCID: PMC2948987 DOI: 10.1104/pp.110.161232] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Accepted: 07/02/2010] [Indexed: 05/18/2023]
Affiliation(s)
- Wendy F Boss
- Department of Plant Biology, North Carolina State University, Raleigh, North Carolina 27695, USA.
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