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开放科学(资源服务)标识码(OSID):
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番茄(Solanum lycopersicum)是世界上最主要的蔬菜作物之一. 番茄在生长发育过程中受到了低温、高温、盐碱、水淹、干旱等非生物胁迫的影响,限制其生长、发育甚至最后导致植株的死亡. 热激因子(Heat Shock Factor,HSF)是植物响应高温胁迫的主要调控因子,并参与盐、干旱等胁迫反应过程[1]. 热激因子可分为A,B,C等3类[2-3];其中,A类基因具有转录激活功能[4-5],B类基因起转录抑制作用,B类转录激活因子又可以作为A类转录激活因子的共激活因子,具有辅助激活功能[6-7];而C类基因因为不具有AHA基序,被推测可能不具有转录活性[8-9],但研究发现,C类基因在水稻[10-11]、拟南芥[12-13]、茶[14]、番茄[15-16]等植物中均能受低温显著诱导,是否具有耐寒功能迄今未得到证实. 本研究对番茄SlHsfC1基因在低温、高温、水淹和盐胁迫下的表达特性进行分析,构建该基因的过表达载体,并分析该基因过表达对转基因植株耐寒性的影响,初步证实该基因过表达能增强转基因番茄植株的耐寒性. 该研究结果拟对今后揭示该基因如何参与番茄冷调控的分子机制奠定一定的基础.
Analysis of Expression Characteristicsand Cold-Tolerance Function of the Heat Shock Factor C1 Gene in Tomato
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摘要: 番茄热激因子基因SlHsfC1受低温诱导表达, 但是否具有耐寒功能尚不清楚. 本研究分析了番茄SlHsfC1基因在低温、高温、水淹和盐胁迫下的表达特性, 以及该基因过表达对转基因植株耐寒性的影响; 初步证实该基因受到低温、高温、水淹和盐胁迫时可诱导表达, 过表达能增强转基因番茄植株的耐寒性. 该结果为今后揭示该基因参与番茄冷调控的分子机制奠定了基础.Abstract: The expression of tomato heat shock factor gene SlHsfC1 can be induced by low temperature, but it is not clear whether it has the function of cold tolerance. Therefore, this study analyzed the expression characteristics of tomato SlHsfC1 gene under low temperature, high temperature, water-logging and salt stress, and the effect of overexpression of this gene on cold tolerance of transgenic plants. It was confirmed that expression of this gene can be induced by low temperature, high temperature, water-logging and salt stress. Overexpression of SlHsfC1 gene can enhance the cold tolerance of transgenic tomato plants. The results laid the foundation for revealing the molecular mechanism of this gene involved in regulation of tomato cold tolerance in the future.
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Key words:
- tomato /
- SlHsfC1 gene /
- cold tolerance /
- low temperature induced expression .
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表 1 引物序列
引物名称 引物序列(5'→3') 位置 P1 CGTTCGATGACGAAAATGGAAG Tipt P2 TCTTCTCTACAACCACCACGAC SlHsfC1 P3 AAGTGAAACCTCCCAAGTTAAC SlHsfC1 P4 AAGCTTACCATGGAGGCTAACAATATTA SlHsfC1 P5 CTCGAGCTCTAAAATCCACCACCGAA SlHsfC1 P6 CATGAGCGAAACCCTATAGGAACC nptII上游 P7 AGGAGCAAGGTGAGATGACAGGAG nptII下游 P8 CGTGAGAAGAAACGGAGACTTGTG SlHsfC1上游 P9 CGACGACGGTGAGGACTGACAG SlHsfC1下游 P10 ACCTTTGCTGAATACCCTCCATTG ELF1-α上游 P11 CACAGTTCACTTCCCCTTCTTCTG ELF1-α下游 -
[1] KUMAR S V, WIGGE P A. H2A Z-Containing Nucleosomes Mediate the Thermosensory Response in Arabidopsis[J]. Cell, 2010, 140(1): 136-147. doi: 10.1016/j.cell.2009.11.006 [2] CHENG Q, ZHOU Y, LIU Z, et al. An Alternatively Spliced Heat Shock Transcription Factor, OsHSFA2dI, Functions in the Heat Stress-Induced Unfolded Protein Response in Rice[J]. Plant Biology (Stuttgart, Germany), 2015, 17(2): 419-429. doi: 10.1111/plb.12267 [3] SINGH A, MITTAL D, LAVANIA D, et al. OsHsfA2c and OsHsfB4b are Involved in the Transcriptional Regulation of Cytoplasmic OsClpB (Hsp100) Gene in Rice (Oryza sativa L. )[J]. Cell Stress and Chaperones, 2012, 17(2): 243-254. doi: 10.1007/s12192-011-0303-5 [4] 万发香, 田婷婷, 杜小兵, 等. 热激因子基因AtHSFa1a提高烟草的耐热性研究[J]. 西南大学学报(自然科学版), 2011, 33(10): 75-80. doi: http://xbgjxt.swu.edu.cn/article/id/jsunsxnnydxxb201110016 [5] GIESGUTH M, SAHM A, SIMON S, et al. Redox-Dependent Translocation of the Heat Shock Transcription Factor AtHSFA8 from the Cytosol to the Nucleus in Arabidopsis Thaliana[J]. FEBS Letters, 2015, 589(6): 718-725. doi: 10.1016/j.febslet.2015.01.039 [6] RÖTH S, MIRUS O, BUBLAK D, et al. DNA-Binding and Repressor Function are Prerequisites for the Turnover of the Tomato Heat Stress Transcription Factor HsfB1[J]. The Plant Journal, 2017, 89(1): 31-44. doi: 10.1111/tpj.13317 [7] BHARTI K, VON KOSKULL-DÖRING P, BHARTI S, et al. Tomato Heat Stress Transcription Factor HsfB1 Represents a Novel Type of General Transcription Coactivator with a Histone-Like Motif Interacting with the Plant CREB Binding Protein Ortholog HAC1[J]. The Plant Cell, 2004, 16(6): 1521-1535. doi: 10.1105/tpc.019927 [8] KOTAK S, PORT M, GANGULI A, et al. Characterization of C-Terminal Domains of Arabidopsis Heat Stress Transcription Factors (HSFS) and Identification of a New Signature Combination of Plant Class a HSFS with AHA and NES Motifs Essential for Activator Function and Intracellular Localization[J]. The Plant Journal, 2004, 39(1): 98-112. doi: 10.1111/j.1365-313X.2004.02111.x [9] MA J, XU Z S, WANG F, et al. Genome-Wide Analysis of HSF Family Transcription Factors and Their Responses to Abiotic Stresses in Two Chinese Cabbage Varieties[J]. Acta Physiologiae Plantarum, 2014, 36(2): 513-523. doi: 10.1007/s11738-013-1432-5 [10] MILLER G, SUZUKI N, RIZHSKY L, et al. Double Mutants Deficient in Cytosolic and Thylakoid Ascorbate Peroxidase Reveal a Complex Mode of Interaction between Reactive Oxygen Species, Plant Development, and Response to Abiotic Stresses[J]. Plant Physiology, 2007, 144(4): 1777-1785. doi: 10.1104/pp.107.101436 [11] MITTAL D, CHAKRABARTI S, SARKAR A, et al. Heat Shock Factor Gene Family in Rice: Genomic Organization and Transcript Expression Profiling in Response to High Temperature, Low Temperature and Oxidative Stresses[J]. Plant Physiology and Biochemistry, 2009, 47(9): 785-795. [12] MITTAL D, MADHYASTHA D A, GROVER A. Genome-Wide Transcriptional Profiles during Temperature and Oxidative Stress Reveal Coordinated Expression Patterns and Overlapping Regulons in Rice[J]. PLoS One, 2012, 7(7): e40899. doi: 10.1371/journal.pone.0040899 [13] PARK S, LEE C M, DOHERTY C J, et al. Regulation of the Arabidopsis CBF Regulon by a Complex Low-Temperature Regulatory Network[J]. The Plant Journal, 2015, 82(2): 193-207. doi: 10.1111/tpj.12796 [14] LIU Z W, WU Z J, LI X H, et al. Identification, Classification, and Expression Profiles of Heat Shock Transcription Factors in Tea Plant (Camellia sinensis) under Temperature Stress[J]. Gene, 2016, 576(1): 52-59. doi: 10.1016/j.gene.2015.09.076 [15] 田小琴. 番茄花序间隔节位的QTL定位及ShHsfC1的功能分析[D]. 武汉: 华中农业大学, 2018. [16] BARRERO-GIL J, HUERTAS R, RAMBLA J L, et al. Tomato Plants Increase Their Tolerance to Low Temperature in a Chilling Acclimation Process Entailing Comprehensive Transcriptional and Metabolic Adjustments[J]. Plant, Cell & Environment, 2016, 39(10): 2303-2318. [17] 潘阳露. 番茄转录因子SlbZIP38响应干旱和高盐胁迫的功能研究[D]. 重庆: 西南大学, 2018. [18] ACHARD P, GONG F, CHEMINANT S, et al. The Cold-Inducible CBF1 Factor-Dependent Signaling Pathway Modulates the Accumulation of the Growth-Repressing DELLA Proteins via Its Effect on Gibberellin Metabolism[J]. The Plant Cell, 2008, 20(8): 2117-2129. doi: 10.1105/tpc.108.058941 [19] ZHANG D, SUN W, SINGH R, et al. GRF-Interacting Factor1 Regulates Shoot Architecture and Meristem Determinacy in Maize[J]. The Plant Cell, 2018, 30(2): 360-374. doi: 10.1105/tpc.17.00791 [20] LANTZOUNI O, ALKOFER A, FALTER-BRAUN P, et al. GROWTH-REGULATING FACTORS Interact with DELLAs and Regulate Growth in Cold Stress[J]. The Plant Cell, 2020, 32(4): 1018-1034. doi: 10.1105/tpc.19.00784