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Liu H, Able AJ, Able JA. SMARTER De-Stressed Cereal Breeding. TRENDS IN PLANT SCIENCE 2016; 21:909-925. [PMID: 27514453 DOI: 10.1016/j.tplants.2016.07.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/30/2016] [Accepted: 07/05/2016] [Indexed: 05/06/2023]
Abstract
In cereal breeding programs, improved yield potential and stability are ultimate goals when developing new varieties. To facilitate achieving these goals, reproductive success under stressful growing conditions is of the highest priority. In recent times, small RNA (sRNA)-mediated pathways have been associated with the regulation of genes involved in stress adaptation and reproduction in both model plants and several cereals. Reproductive and physiological traits such as flowering time, reproductive branching, and root architecture can be manipulated by sRNA regulatory modules. We review sRNA-mediated pathways that could be exploited to expand crop diversity with adaptive traits and, in particular, the development of high-yielding stress-tolerant cereals: SMARTER cereal breeding through 'Small RNA-Mediated Adaptation of Reproductive Targets in Epigenetic Regulation'.
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Affiliation(s)
- Haipei Liu
- School of Agriculture, Food and Wine, University of Adelaide, Waite Research Institute, PMB 1, Glen Osmond, South Australia 5064, Australia
| | - Amanda J Able
- School of Agriculture, Food and Wine, University of Adelaide, Waite Research Institute, PMB 1, Glen Osmond, South Australia 5064, Australia
| | - Jason A Able
- School of Agriculture, Food and Wine, University of Adelaide, Waite Research Institute, PMB 1, Glen Osmond, South Australia 5064, Australia.
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102
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Liang C, Meng Z, Meng Z, Malik W, Yan R, Lwin KM, Lin F, Wang Y, Sun G, Zhou T, Zhu T, Li J, Jin S, Guo S, Zhang R. GhABF2, a bZIP transcription factor, confers drought and salinity tolerance in cotton (Gossypium hirsutum L.). Sci Rep 2016; 6:35040. [PMID: 27713524 PMCID: PMC5054369 DOI: 10.1038/srep35040] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 09/23/2016] [Indexed: 11/16/2022] Open
Abstract
The bZIP transcription factor (TF) act as an important regulator for the abscisic acid (ABA) mediated abiotic stresses signaling pathways in plants. Here, we reported the cloning and characterization of GhABF2, encoding for typical cotton bZIP TF. Overexpression of GhABF2 significantly improved drought and salt stress tolerance both in Arabidopsis and cotton. However, silencing of GhABF2 made transgenic cotton sensitive to PEG osmotic and salt stress. Expression of GhABF2 was induced by drought and ABA treatments but repressed by high salinity. Transcriptome analysis indicated that GhABF2 increases drought and salt tolerance by regulating genes related to ABA, drought and salt response. The proline contents, activity of superoxide dismutase (SOD) and catalase (CAT) were also significantly increased in GhABF2-overexpression cottons in comparison to wild type after drought and salt treatment. Further, an increase in fiber yield under drought and saline-alkali wetland exhibited the important role of GhABF2 in enhancing the drought and salt tolerance in transgenic lines. In conclusion, manipulation of GhABF2 by biotechnological tools could be a sustainable strategy to deploy drought and salt tolerance in cotton.
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Affiliation(s)
- Chengzhen Liang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Zhaohong Meng
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Zhigang Meng
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Waqas Malik
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.,Department of Plant Breeding and Genetics, Bahauddin Zakariya University, Multan, Pakistan
| | - Rong Yan
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.,College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China
| | - Khin Myat Lwin
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.,Biotechnology Research Department, Ministry of Science and Technology, Naypyidaw, Myanmar
| | - Fazhuang Lin
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yuan Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guoqing Sun
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Tao Zhou
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Tao Zhu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jianying Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Shuangxia Jin
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Sandui Guo
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Rui Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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103
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Liu H, Able AJ, Able JA. Water-deficit stress-responsive microRNAs and their targets in four durum wheat genotypes. Funct Integr Genomics 2016; 17:237-251. [PMID: 27562677 DOI: 10.1007/s10142-016-0515-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 12/25/2022]
Abstract
MicroRNAs (miRNAs) guide regulation at the post-transcriptional level by inducing messenger RNA (mRNA) degradation or translational inhibition of their target protein-coding genes. Durum wheat miRNAs may contribute to the genotypic water-deficit stress response in different durum varieties. Further investigation of the interactive miRNA-target regulatory modules and experimental validation of their response to water stress will contribute to our understanding of the small RNA-mediated molecular networks underlying stress adaptation in durum wheat. In this study, a comprehensive genome-wide in silico analysis using the updated Triticum transcriptome assembly identified 2055 putative targets for 113 conserved durum miRNAs and 131 targets for four novel durum miRNAs that putatively contribute to genotypic stress tolerance. Predicted mRNA targets encode various transcription factors, binding proteins and functional enzymes, which play vital roles in multiple biological pathways such as hormone signalling and metabolic processes. Quantitative PCR profiling further characterised 43 targets and 5 miRNAs with stress-responsive and/or genotype-dependent differential expression in two stress-tolerant and two stress-sensitive durum genotypes subjected to pre-anthesis water-deficit stress. Furthermore, a 5' RLM-RACE approach validated nine mRNA targets cleaved by water-deficit stress-responsive miRNAs, which, to our knowledge, has not been previously reported in durum wheat. The present study provided experimental evidence of durum miRNAs and target genes in response to water-deficit stress in contrasting durum varieties, providing new insights into the regulatory roles of the miRNA-guided RNAi mechanism underlying stress adaptation in durum wheat.
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Affiliation(s)
- Haipei Liu
- School of Agriculture, Food and Wine, University of Adelaide, Waite Research Institute, PMB 1, Glen Osmond, South Australia, 5064, Australia
| | - Amanda J Able
- School of Agriculture, Food and Wine, University of Adelaide, Waite Research Institute, PMB 1, Glen Osmond, South Australia, 5064, Australia
| | - Jason A Able
- School of Agriculture, Food and Wine, University of Adelaide, Waite Research Institute, PMB 1, Glen Osmond, South Australia, 5064, Australia.
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104
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Iwamoto M, Tagiri A. MicroRNA-targeted transcription factor gene RDD1 promotes nutrient ion uptake and accumulation in rice. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2016; 85:466-77. [PMID: 26729506 DOI: 10.1111/tpj.13117] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 12/11/2015] [Accepted: 12/21/2015] [Indexed: 05/20/2023]
Abstract
Fertilizers are often potential environmental pollutants, therefore increasing productivity and the efficiency of nutrient uptake to boost crop yields without the risk of environmental pollution is a desirable goal. Here, we show that the transcription factor encoding gene RDD1 plays a role in improving the uptake and accumulation of various nutrient ions in rice. RDD1 was found to be targeted by the microRNA miR166. An RDD1 transgene driven by a strong constitutive promoter exhibited a diurnally oscillating expression similar to that of the endogenous RDD1, and nucleotide substitution within the miR166 recognition site to prevent miR166-RDD1 mRNA pairing resulted in constitutive RDD1 expression. The RDD1 protein was localized to vascular tissue because miR166 repressed RDD1 expression in the mesophyll. The overexpression of RDD1 induced the expression of genes associated with the transport of several nutrients such as NH4(+), Na(+), SO4(2-), Cl(-), PO4(3-) and sucrose, and the uptake and accumulation of various nutrient ions under low-nutrient conditions. Moreover, the overexpression of RDD1 increased nitrogen responsiveness and grain productivity. Our results suggest that RDD1 can contribute to the increased grain productivity of rice via inducing the efficient uptake and accumulation of various nutrient ions.
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Affiliation(s)
- Masao Iwamoto
- Division of Plant Sciences, National Institute of Agrobiological Sciences, Tsukuba Ibaraki, 305-8602, Japan
- JST, PRESTO, Kawaguchi, Saitama, 332-0012, Japan
| | - Akemi Tagiri
- Division of Plant Sciences, National Institute of Agrobiological Sciences, Tsukuba Ibaraki, 305-8602, Japan
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105
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Yadav D, Shavrukov Y, Bazanova N, Chirkova L, Borisjuk N, Kovalchuk N, Ismagul A, Parent B, Langridge P, Hrmova M, Lopato S. Constitutive overexpression of the TaNF-YB4 gene in transgenic wheat significantly improves grain yield. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:6635-6650. [PMID: 26220082 PMCID: PMC4623681 DOI: 10.1093/jxb/erv370] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Heterotrimeric nuclear factors Y (NF-Ys) are involved in regulation of various vital functions in all eukaryotic organisms. Although a number of NF-Y subunits have been characterized in model plants, only a few have been functionally evaluated in crops. In this work, a number of genes encoding NF-YB and NF-YC subunits were isolated from drought-tolerant wheat (Triticum aestivum L. cv. RAC875), and the impact of the overexpression of TaNF-YB4 in the Australian wheat cultivar Gladius was investigated. TaNF-YB4 was isolated as a result of two consecutive yeast two-hybrid (Y2H) screens, where ZmNF-YB2a was used as a starting bait. A new NF-YC subunit, designated TaNF-YC15, was isolated in the first Y2H screen and used as bait in a second screen, which identified two wheat NF-YB subunits, TaNF-YB2 and TaNF-YB4. Three-dimensional modelling of a TaNF-YB2/TaNF-YC15 dimer revealed structural determinants that may underlie interaction selectivity. The TaNF-YB4 gene was placed under the control of the strong constitutive polyubiquitin promoter from maize and introduced into wheat by biolistic bombardment. The growth and yield components of several independent transgenic lines with up-regulated levels of TaNF-YB4 were evaluated under well-watered conditions (T1-T3 generations) and under mild drought (T2 generation). Analysis of T2 plants was performed in large deep containers in conditions close to field trials. Under optimal watering conditions, transgenic wheat plants produced significantly more spikes but other yield components did not change. This resulted in a 20-30% increased grain yield compared with untransformed control plants. Under water-limited conditions transgenic lines maintained parity in yield performance.
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Affiliation(s)
- Dinesh Yadav
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
| | - Yuri Shavrukov
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
| | - Natalia Bazanova
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
| | - Larissa Chirkova
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
| | - Nikolai Borisjuk
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
| | - Nataliya Kovalchuk
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
| | - Ainur Ismagul
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
| | - Boris Parent
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
| | - Peter Langridge
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
| | - Maria Hrmova
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
| | - Sergiy Lopato
- University of Adelaide, Australian Centre for Plant Functional Genomics, Urrbrae SA 5064, Australia
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106
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He X, Qu B, Li W, Zhao X, Teng W, Ma W, Ren Y, Li B, Li Z, Tong Y. The Nitrate-Inducible NAC Transcription Factor TaNAC2-5A Controls Nitrate Response and Increases Wheat Yield. PLANT PHYSIOLOGY 2015; 169:1991-2005. [PMID: 26371233 PMCID: PMC4634051 DOI: 10.1104/pp.15.00568] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 09/14/2015] [Indexed: 05/18/2023]
Abstract
Nitrate is a major nitrogen resource for cereal crops; thus, understanding nitrate signaling in cereal crops is valuable for engineering crops with improved nitrogen use efficiency. Although several regulators have been identified in nitrate sensing and signaling in Arabidopsis (Arabidopsis thaliana), the equivalent information in cereals is missing. Here, we isolated a nitrate-inducible and cereal-specific NAM, ATAF, and CUC (NAC) transcription factor, TaNAC2-5A, from wheat (Triticum aestivum). A chromatin immunoprecipitation assay showed that TaNAC2-5A could directly bind to the promoter regions of the genes encoding nitrate transporter and glutamine synthetase. Overexpression of TaNAC2-5A in wheat enhanced root growth and nitrate influx rate and, hence, increased the root's ability to acquire nitrogen. Furthermore, we found that TaNAC2-5A-overexpressing transgenic wheat lines had higher grain yield and higher nitrogen accumulation in aerial parts and allocated more nitrogen in grains in a field experiment. These results suggest that TaNAC2-5A is involved in nitrate signaling and show that it is an exciting gene resource for breeding crops with more efficient use of fertilizer.
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Affiliation(s)
- Xue He
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing 100101, China (X.H., B.Q., W.L., X.Z., W.T., W.M., B.L., Z.L., Y.T.); andCollege of Agronomy/State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China (Y.R.)
| | - Baoyuan Qu
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing 100101, China (X.H., B.Q., W.L., X.Z., W.T., W.M., B.L., Z.L., Y.T.); andCollege of Agronomy/State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China (Y.R.)
| | - Wenjing Li
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing 100101, China (X.H., B.Q., W.L., X.Z., W.T., W.M., B.L., Z.L., Y.T.); andCollege of Agronomy/State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China (Y.R.)
| | - Xueqiang Zhao
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing 100101, China (X.H., B.Q., W.L., X.Z., W.T., W.M., B.L., Z.L., Y.T.); andCollege of Agronomy/State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China (Y.R.)
| | - Wan Teng
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing 100101, China (X.H., B.Q., W.L., X.Z., W.T., W.M., B.L., Z.L., Y.T.); andCollege of Agronomy/State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China (Y.R.)
| | - Wenying Ma
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing 100101, China (X.H., B.Q., W.L., X.Z., W.T., W.M., B.L., Z.L., Y.T.); andCollege of Agronomy/State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China (Y.R.)
| | - Yongzhe Ren
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing 100101, China (X.H., B.Q., W.L., X.Z., W.T., W.M., B.L., Z.L., Y.T.); andCollege of Agronomy/State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China (Y.R.)
| | - Bin Li
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing 100101, China (X.H., B.Q., W.L., X.Z., W.T., W.M., B.L., Z.L., Y.T.); andCollege of Agronomy/State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China (Y.R.)
| | - Zhensheng Li
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing 100101, China (X.H., B.Q., W.L., X.Z., W.T., W.M., B.L., Z.L., Y.T.); andCollege of Agronomy/State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China (Y.R.)
| | - Yiping Tong
- State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Sciences, Chinese Academy of Sciences, Beijing 100101, China (X.H., B.Q., W.L., X.Z., W.T., W.M., B.L., Z.L., Y.T.); andCollege of Agronomy/State Key Laboratory of Wheat and Maize Crop Science/Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China (Y.R.)
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107
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López-Arredondo D, González-Morales SI, Bello-Bello E, Alejo-Jacuinde G, Herrera L. Engineering food crops to grow in harsh environments. F1000Res 2015; 4:651. [PMID: 26380074 PMCID: PMC4560252 DOI: 10.12688/f1000research.6538.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/28/2015] [Indexed: 12/18/2022] Open
Abstract
Achieving sustainable agriculture and producing enough food for the increasing global population will require effective strategies to cope with harsh environments such as water and nutrient stress, high temperatures and compacted soils with high impedance that drastically reduce crop yield. Recent advances in the understanding of the molecular, cellular and epigenetic mechanisms that orchestrate plant responses to abiotic stress will serve as the platform to engineer improved crop plants with better designed root system architecture and optimized metabolism to enhance water and nutrients uptake and use efficiency and/or soil penetration. In this review we discuss such advances and how the generated knowledge could be used to integrate effective strategies to engineer crops by gene transfer or genome editing technologies.
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Affiliation(s)
| | - Sandra Isabel González-Morales
- Laboratorio Nacional de Genómica para la Biodiversidad, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Irapuato, Guanajuato, 36821, Mexico
| | - Elohim Bello-Bello
- Laboratorio Nacional de Genómica para la Biodiversidad, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Irapuato, Guanajuato, 36821, Mexico
| | - Gerardo Alejo-Jacuinde
- Laboratorio Nacional de Genómica para la Biodiversidad, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Irapuato, Guanajuato, 36821, Mexico
| | - Luis Herrera
- Laboratorio Nacional de Genómica para la Biodiversidad, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Irapuato, Guanajuato, 36821, Mexico
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108
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Abstract
The transcription factor NUCLEAR FACTOR Y (NF-Y) plays an essential role in many developmental and stress-responsive processes in plants. NF-Y composed of 3 subunits, NF-YA, NF-YB, and NF-YC, targets the CCAAT box, a common cis-element in eukaryotic promoters. We recently identified a gene TaNF-YA10-1 from the wheat salinity tolerant cultivar SR3 and found that recombinant TaNF-YA10-1 could successfully bind to the CCAAT motif in vitro. We also showed that the constitutive expression of TaNF-YA10-1 in Arabidopsis thaliana significantly increased the plant's sensitivity to salinity. Here, we further demonstrated that TaNF-YA10-1 -overexpressing plants conferred drought tolerance as judged from the relative root length and whole-plant growth under drought stress. These results suggest that TaNF-YA10-1 functions independently in salinity and drought stress. Our findings are helpful in understanding the distinct roles of NF-YA in plant stress responses.
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Affiliation(s)
- Xiaoyan Ma
- a The Key Laboratory of Plant Cell Engineering and Germplasm Innovation; Ministry of Education; School of Life Science; Shandong University ; Jinan , PR China
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