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Aksoy E, Yavuz C, Yagiz AK, Unel NM, Baloğlu MC. Genome-wide characterization and expression analysis of GATA transcription factors under combination of light wavelengths and drought stress in potato. PLANT DIRECT 2024; 8:e569. [PMID: 38659972 PMCID: PMC11042883 DOI: 10.1002/pld3.569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 01/25/2024] [Accepted: 01/31/2024] [Indexed: 04/26/2024]
Abstract
GATA is one of the prominent transcription factor families conserved among many organisms in eukaryotes and has different biological roles in many pathways, particularly in light regulation in plants. Although GATA transcription factors (TFs) have been identified in different crop species, their roles in abiotic stress tolerance have not been studied in potato. In this study, we identified 32 GATA TFs in potato (Solanum tuberosum) by in silico analyses, and expression levels of selected six genes were investigated in drought-tolerant (Sante) and sensitive (Agria) cultivars under light, drought, and combined (light + drought) stress conditions. According to the phylogenetic results, StGATA TFs were divided into four main groups (I, II, III, and IV) and different sub-groups in I and II (eight and five, respectively). StGATA genes were uniformly localized to each chromosome with a conserved exon/intron structure. The presence of cis-elements within the StGATA family further supported the possible involvement in abiotic stress tolerance and light response, tissue-specific expression, and hormonal regulation. Additional PPI investigations showed that these networks, especially for Groups I, II, and IV, play a significant role in response to light and drought stress. Six StGATAs were chosen from these groups for expressional profiling, and their expression in both Sante and Agria was mainly downregulated under purple and red lights, drought, and combined stress (blue + drought and purple + drought). The interactomes of selected StGATAs, StGATA3, StGATA24, and StGATA29 were analyzed, and the accessions with GATA motifs were checked for expression. The results showed that the target proteins, cyclin-P3-1, SPX domain-containing protein 1, mitochondrial calcium uniporter protein 2, mitogen-activated protein kinase kinase kinase YODA, and splicing factor 3 B subunit 4-like, mainly play a role in phytochrome-mediated stomatal patterning, development, and activity. Understanding the interactions between drought stress and the light response mechanisms in potato plants is essential. It will eventually be possible to enhance potato resilience to climate change by manipulating the TFs that play a role in these pathways.
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Affiliation(s)
- Emre Aksoy
- Faculty of Arts and Sciences, Department of BiologyMiddle East Technical UniversityAnkaraTürkiye
| | - Caner Yavuz
- Faculty of Agricultural Sciences and Technologies, Department of Agricultural Genetic EngineeringNiğde Ömer Halisdemir UniversityNiğdeTürkiye
| | - Ayten Kübra Yagiz
- Faculty of Agricultural Sciences and Technologies, Department of Agricultural Genetic EngineeringNiğde Ömer Halisdemir UniversityNiğdeTürkiye
| | - Necdet Mehmet Unel
- Plantomics Research Laboratory, Department of Genetics and Bioengineering, Faculty of Engineering and ArchitectureKastamonu UniversityKastamonuTürkiye
- Research and Application CenterKastamonu UniversityKastamonuTürkiye
| | - Mehmet Cengiz Baloğlu
- Plantomics Research Laboratory, Department of Genetics and Bioengineering, Faculty of Engineering and ArchitectureKastamonu UniversityKastamonuTürkiye
- Sabancı University Nanotechnology Research and Application Center (SUNUM)Sabancı UniversityTuzlaTürkiye
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Çelik S. Gene expression analysis of potato drought-responsive genes under drought stress in potato ( Solanum tuberosum L.) cultivars. PeerJ 2024; 12:e17116. [PMID: 38525286 PMCID: PMC10960530 DOI: 10.7717/peerj.17116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 02/26/2024] [Indexed: 03/26/2024] Open
Abstract
The potato (Solanum tuberosum L.), an important field crop consumed extensively worldwide, is adversely affected by abiotic stress factors especially drought. Therefore, it is vital to understand the genetic mechanism under drought stress to decrease loose of yield and quality . This trial aimed to screen drought-responsive gene expressions of potato and determine the drought-tolerant potato cultivar. The trial pattern is a completely randomized block design (CRBD) with four replications under greenhouse conditions. Four cultivars (Brooke, Orwell, Vr808, Shc909) were irrigated with four different water regimes (control and three stress conditions), and the gene expression levels of 10 potato genes were investigated. The stress treatments as follows: Control = 100% field capacity; slight drought = 75% field capacity; moderate drought = 50% field capacity, and severe drought 25% field capacity. To understand the gene expression under drought stress in potato genotypes, RT-qPCR analysis was performed and results showed that the genes most associated with drought tolerance were the StRD22 gene, MYB domain transcription factor, StERD7, Sucrose Synthase (SuSy), ABC Transporter, and StDHN1. The StHSP100 gene had the lowest genetic expression in all cultivars. Among the cultivars, the Orwell exhibited the highest expression of the StRD22 gene under drought stress. Overall, the cultivar with the highest gene expression was the Vr808, closely followed by the Brooke cultivar. As a result, it was determined that potato cultivars Orwell, Vr808, and Brooke could be used as parents in breeding programs to develop drought tolerant potato cultivars.
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Affiliation(s)
- Sadettin Çelik
- Genç Vocational School, Forestry Department, Bingol University, Bingol, Turkey
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3
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Ahmed M, Tóth Z, Decsi K. The Impact of Salinity on Crop Yields and the Confrontational Behavior of Transcriptional Regulators, Nanoparticles, and Antioxidant Defensive Mechanisms under Stressful Conditions: A Review. Int J Mol Sci 2024; 25:2654. [PMID: 38473901 DOI: 10.3390/ijms25052654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 02/20/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
One of the most significant environmental challenges to crop growth and yield worldwide is soil salinization. Salinity lowers soil solution water potential, causes ionic disequilibrium and specific ion effects, and increases reactive oxygen species (ROS) buildup, causing several physiological and biochemical issues in plants. Plants have developed biological and molecular methods to combat salt stress. Salt-signaling mechanisms regulated by phytohormones may provide additional defense in salty conditions. That discovery helped identify the molecular pathways that underlie zinc-oxide nanoparticle (ZnO-NP)-based salt tolerance in certain plants. It emphasized the need to study processes like transcriptional regulation that govern plants' many physiological responses to such harsh conditions. ZnO-NPs have shown the capability to reduce salinity stress by working with transcription factors (TFs) like AP2/EREBP, WRKYs, NACs, and bZIPs that are released or triggered to stimulate plant cell osmotic pressure-regulating hormones and chemicals. In addition, ZnO-NPs have been shown to reduce the expression of stress markers such as malondialdehyde (MDA) and hydrogen peroxide (H2O2) while also affecting transcriptional factors. Those systems helped maintain protein integrity, selective permeability, photosynthesis, and other physiological processes in salt-stressed plants. This review examined how salt stress affects crop yield and suggested that ZnO-NPs could reduce plant salinity stress instead of osmolytes and plant hormones.
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Affiliation(s)
- Mostafa Ahmed
- Festetics Doctoral School, Institute of Agronomy, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, 8360 Keszthely, Hungary
- Department of Agricultural Biochemistry, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Zoltán Tóth
- Institute of Agronomy, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, 8360 Keszthely, Hungary
| | - Kincső Decsi
- Institute of Agronomy, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, 8360 Keszthely, Hungary
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4
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Sun X, Tang M, Xu L, Luo X, Shang Y, Duan W, Huang Z, Jin C, Chen G. Genome-wide identification of long non-coding RNAs and their potential functions in radish response to salt stress. Front Genet 2023; 14:1232363. [PMID: 38028592 PMCID: PMC10656690 DOI: 10.3389/fgene.2023.1232363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 10/17/2023] [Indexed: 12/01/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) are increasingly recognized as cis- and trans-acting regulators of protein-coding genes in plants, particularly in response to abiotic stressors. Among these stressors, high soil salinity poses a significant challenge to crop productivity. Radish (Raphanus sativus L.) is a prominent root vegetable crop that exhibits moderate susceptibility to salt stress, particularly during the seedling stage. Nevertheless, the precise regulatory mechanisms through which lncRNAs contribute to salt response in radish remain largely unexplored. In this study, we performed genome-wide identification of lncRNAs using strand-specific RNA sequencing on radish fleshy root samples subjected to varying time points of salinity treatment. A total of 7,709 novel lncRNAs were identified, with 363 of them displaying significant differential expression in response to salt application. Furthermore, through target gene prediction, 5,006 cis- and 5,983 trans-target genes were obtained for the differentially expressed lncRNAs. The predicted target genes of these salt-responsive lncRNAs exhibited strong associations with various plant defense mechanisms, including signal perception and transduction, transcription regulation, ion homeostasis, osmoregulation, reactive oxygen species scavenging, photosynthesis, phytohormone regulation, and kinase activity. Notably, this study represents the first comprehensive genome-wide analysis of salt-responsive lncRNAs in radish, to the best of our knowledge. These findings provide a basis for future functional analysis of lncRNAs implicated in the defense response of radish against high salinity, which will aid in further understanding the regulatory mechanisms underlying radish response to salt stress.
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Affiliation(s)
- Xiaochuan Sun
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Mingjia Tang
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Liang Xu
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Key Laboratory of Horticultural Crop Biology and Genetic Improvement (East China) of MOAR, College of Horticulture, Nanjing Agricultural University, Nanjing, China
| | - Xiaobo Luo
- Guizhou Institute of Biotechnology, Guizhou Province Academy of Agricultural Sciences, Guiyang, China
| | - Yutong Shang
- Guizhou Institute of Biotechnology, Guizhou Province Academy of Agricultural Sciences, Guiyang, China
| | - Weike Duan
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Zhinan Huang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Cong Jin
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Guodong Chen
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
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Chiab N, Kammoun M, Nouri-Ellouz O, Gargouri-Bouzid R. New potential roles of StDREB1 and VvWRKY2 transcription factors in potato dormancy and sprouting patterns. JOURNAL OF PLANT PHYSIOLOGY 2023; 289:154077. [PMID: 37683547 DOI: 10.1016/j.jplph.2023.154077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 07/30/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023]
Abstract
In a previous study, transgenic potato plants overexpressing the StDREB1 or the VvWRKY2 transcription factor (TF) proved to have higher productivity and ameliorated tuber quality in comparison to wildtype (WT; the BF15 variety) plants. Interestingly, when stored at 4 °C, we noticed that the tubers of transgenic potato plants exhibited a delay in sprouting, hence a longer dormancy period. Therefore, we decided to study the dormancy and sprouting of these tubers (the two transgenic and the WT lines) through a physiological and biochemical characterization. WT and genetically modified (GM) tubers were stored at 4 °C for different periods (0, 30, 90, 180, and 240 days) followed by placing them in a germination chamber and the sprouting parameters were then monitored. According to our findings, the overexpression of these two TFs led to modifications in the sprouting kinetic of tubers through an extension of the dormancy period and changes in the sprouting process. Indeed, WT tubers emitted apical and lateral sprouts while those from GM plants showed mainly apical sprouts. In addition, higher reactive oxygen species (ROS) rates, indicators of tuber aging, were recorded in WT tubers compared to GM ones. The higher antioxidant enzyme activities in GM tubers seem to be responsible for aging modification in comparison to WT. The above results suggest the first report on new roles of the StDREB1 and VvWRKY2 TF which seemed to be involved in the regulation of potato tuber aging via a reduction of the main biochemical factors concentration and the ROS content leading to a longer dormancy period and a modified sprouting pattern.
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Affiliation(s)
- Nour Chiab
- Plant amelioration and Agri-resources valorization laboratory, National Engineering School of Sfax (ENIS), Soukra Road Km 4, 3038, Sfax, Tunisia.
| | - Mariem Kammoun
- Plant amelioration and Agri-resources valorization laboratory, National Engineering School of Sfax (ENIS), Soukra Road Km 4, 3038, Sfax, Tunisia
| | - Oumèma Nouri-Ellouz
- Plant amelioration and Agri-resources valorization laboratory, National Engineering School of Sfax (ENIS), Soukra Road Km 4, 3038, Sfax, Tunisia
| | - Radhia Gargouri-Bouzid
- Plant amelioration and Agri-resources valorization laboratory, National Engineering School of Sfax (ENIS), Soukra Road Km 4, 3038, Sfax, Tunisia
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6
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Charfeddine M, Chiab N, Charfeddine S, Ferjani A, Gargouri-Bouzid R. Heat, drought, and combined stress effect on transgenic potato plants overexpressing the StERF94 transcription factor. JOURNAL OF PLANT RESEARCH 2023; 136:549-562. [PMID: 36988761 DOI: 10.1007/s10265-023-01454-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 03/17/2023] [Indexed: 06/09/2023]
Abstract
Despite their economic importance worldwide, potato plants are sensitive to various abiotic constraints, such as drought and high temperatures, which cause significant losses in yields and tuber quality. Moreover, because of the climate change phenomenon, plants are frequently subjected to combined stresses, mainly high temperatures and drought. In this context, breeding for tolerant varieties should consider not only plant response to drought or high temperature but also to combined stresses. In the current study, we studied transgenic potato plants overexpressing an ethylene response transcription factor (TF; StERF94) involved in abiotic stress response signaling pathways. Our previous results showed that these transgenic plants display tolerance to salt stress more than wildtype (WT). In this work, we aimed to investigate the effects of drought, heat, and combined stresses on transgenic potato plants overexpressing StERF94 TF under in vitro culture conditions. The obtained results revealed that StERF94 overexpression improved the tolerance of the transgenic plants to drought, heat, and combined stresses through better control of the leaf water and chlorophyll contents, activation of antioxidant enzymes, and an accumulation of proline, especially in the leaves. Indeed, the expression level of antioxidant enzyme-encoding genes (CuZnSOD, FeSOD, CAT1, and CAT2) was significantly induced by the different stress conditions in the transgenic potato plants compared with the WT plants. This study further confirms that StERF94 TF may be implicated in regulating the expression of target genes encoding antioxidant enzymes.
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Affiliation(s)
- Mariam Charfeddine
- Plant Amelioration and Valorization of Agri-resource Laboratory, National School of Engineers of Sfax (ENIS), Sfax, Tunisia
| | - Nour Chiab
- Plant Amelioration and Valorization of Agri-resource Laboratory, National School of Engineers of Sfax (ENIS), Sfax, Tunisia.
| | - Safa Charfeddine
- Plant Amelioration and Valorization of Agri-resource Laboratory, National School of Engineers of Sfax (ENIS), Sfax, Tunisia
| | - Aziza Ferjani
- Plant Amelioration and Valorization of Agri-resource Laboratory, National School of Engineers of Sfax (ENIS), Sfax, Tunisia
| | - Radhia Gargouri-Bouzid
- Plant Amelioration and Valorization of Agri-resource Laboratory, National School of Engineers of Sfax (ENIS), Sfax, Tunisia
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7
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Han X, Yang R, Zhang L, Wei Q, Zhang Y, Wang Y, Shi Y. A Review of Potato Salt Tolerance. Int J Mol Sci 2023; 24:10726. [PMID: 37445900 DOI: 10.3390/ijms241310726] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/16/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023] Open
Abstract
Potato is the world's fourth largest food crop. Due to limited arable land and an ever-increasing demand for food from a growing population, it is critical to increase crop yields on existing acreage. Soil salinization is an increasing problem that dramatically impacts crop yields and restricts the growing area of potato. One possible solution to this problem is the development of salt-tolerant transgenic potato cultivars. In this work, we review the current potato planting distribution and the ways in which it overlaps with salinized land, in addition to covering the development and utilization of potato salt-tolerant cultivars. We also provide an overview of the current progress toward identifying potato salt tolerance genes and how they may be deployed to overcome the current challenges facing potato growers.
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Affiliation(s)
- Xue Han
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Ruijie Yang
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Lili Zhang
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Qiaorong Wei
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Yu Zhang
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Yazhi Wang
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Ying Shi
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
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8
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DsDBF1, a Type A-5 DREB Gene, Identified and Characterized in the Moss Dicranum scoparium. LIFE (BASEL, SWITZERLAND) 2022; 13:life13010090. [PMID: 36676039 PMCID: PMC9862540 DOI: 10.3390/life13010090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/23/2022] [Accepted: 12/25/2022] [Indexed: 12/29/2022]
Abstract
Plant dehydration-responsive element binding (DREB) transcription factors (TFs) play important roles during stress tolerance by regulating the expression of numerous genes involved in stresses. DREB TFs have been extensively studied in a variety of angiosperms and bryophytes. To date, no information on the identification and characterization of DREB TFs in Dicranum scoparium has been reported. In this study, a new DBF1 gene from D. scoparium was identified by cloning and sequencing. Analysis of the conserved domain and physicochemical properties revealed that DsDBF1 protein has a classic AP2 domain encoding a 238 amino acid polypeptide with a molecular mass of 26 kDa and a pI of 5.98. Subcellular prediction suggested that DsDBF1 is a nuclear and cytoplasmic protein. Phylogenetic analysis showed that DsDBF1 belongs to group A-5 DREBs. Expression analysis by reverse transcription quantitative real-time polymerase chain reaction (RT-qPCR) revealed that DsDBF1 was significantly upregulated in response to abiotic stresses such as desiccation/rehydration, exposure to paraquat, CdCl2, high and freezing temperatures. Taken together, our data suggest that DsDBF1 could be a promising gene candidate to improve stress tolerance in crop plants, and the characterization of TFs of a stress tolerant moss such as D. scoparium provides a better understanding of plant adaptation mechanisms.
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9
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Ayadi M, Chiab N, Charfeddine S, Abdelhedi R, Dabous A, Talbi O, Mieulet D, Guiderdoni E, Aifa S, Gargouri-Bouzid R, Hanana M. Improved growth and tuber quality of transgenic potato plants overexpressing either NHX antiporter, CLC chloride channel, or both. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 189:46-58. [PMID: 36044822 DOI: 10.1016/j.plaphy.2022.07.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/11/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
The nutritional enhancement of potato plants (Solanum tuberosum L.,) is highly critical. As it is considered a worldwide basic vegetarian nutrition to maintain health. S. tuberosum is one of the foremost staples and the world's fourth-largest food crop. In advance, its need is increasing because of its high-industrial value and population blast. To improve both potato growth and behavior under harsh environmental conditions, we produced transgenic potato plants overexpressing either VvNHX (a sodium proton antiporter from Vitis vinifera), VvCLC (a chloride channel from Vitis vinifera), or both. Control and transgenic plants were grown in greenhouse and field under non-stressed conditions for 85 days in order to characterize their phenotype and evaluate their agronomical performance. To this aim, the evaluation of plant growth parameters, tuber yields and characteristics (calibers, eye number and color), the chemical composition of tubers, was conducted and compared between the different lines. The obtained results showed that transgenic plants displayed an improved growth (flowering precocity, gain of vigor and better vegetative growth) along with enhanced tuber yields and quality (increased protein and starch contents). Our findings provide then insight into the role played by the VvNHX antiport and the VvCLC channel and a greater understanding of the effect of their overexpression in potato plants.
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Affiliation(s)
- Mariem Ayadi
- Laboratory of Molecular and Cellular Screening Processes, Center of Biotechnology of Sfax, University of Sfax, Tunisia; Laboratory of Extremophile Plants, Biotechnology Center of Borj-Cédria, Hammam-Lif, Tunisia
| | - Nour Chiab
- Plant amelioration and Agri-resource valorization laboratory, National School of Engineers of Sfax (ENIS), Tunisia
| | - Safa Charfeddine
- Plant amelioration and Agri-resource valorization laboratory, National School of Engineers of Sfax (ENIS), Tunisia
| | - Rania Abdelhedi
- Laboratory of Molecular and Cellular Screening Processes, Center of Biotechnology of Sfax, University of Sfax, Tunisia
| | - Amira Dabous
- Laboratory of Extremophile Plants, Biotechnology Center of Borj-Cédria, Hammam-Lif, Tunisia
| | - Ons Talbi
- Laboratory of Extremophile Plants, Biotechnology Center of Borj-Cédria, Hammam-Lif, Tunisia
| | - Delphine Mieulet
- Cirad, UMR AGAP, Montpellier, France; Université de Montpellier, Cirad-Inra-Montpellier SupAgro, Montpellier, France
| | - Emmanuel Guiderdoni
- Cirad, UMR AGAP, Montpellier, France; Université de Montpellier, Cirad-Inra-Montpellier SupAgro, Montpellier, France
| | - Sami Aifa
- Laboratory of Molecular and Cellular Screening Processes, Center of Biotechnology of Sfax, University of Sfax, Tunisia
| | - Radhia Gargouri-Bouzid
- Plant amelioration and Agri-resource valorization laboratory, National School of Engineers of Sfax (ENIS), Tunisia
| | - Mohsen Hanana
- Laboratory of Extremophile Plants, Biotechnology Center of Borj-Cédria, Hammam-Lif, Tunisia.
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10
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Chiab N, Aoiadni N, Nouri-Ellouz O, Ghorbel-Koubaa F, Mellouli M, Sellami-Boudawara T, Kallel C, Makni-Ayadi F, Gargouri-Bouzid R. Subacute toxicity studies of meals prepared from genetically modified potato overexpressing the StDREB1 or the VvWRKY2 transcription factor in rats. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:5883-5890. [PMID: 35426948 DOI: 10.1002/jsfa.11938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/26/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Potato tubers from genetically modified plants overexpressing the StDREB1 or the VvWRKY2 transcription factors that exhibited improved tolerance to salt and resistance to Fusarium solani infection were characterized and evaluated for safety in a 30 day rat feeding study. Male Wistar rats were split into four groups and provided with a diet composed of 33% (w/w) of either one of the two genetically modified potatoes (GMPs), 33% of the commercial Spunta variety (Sp), or a control group fed with the basal rats' diet. The influence of the GMPs on rat behavior and overall health parameters was evaluated and compared with that of commercial potato (i.e. the Sp group) and control diet. RESULTS Small differences were noticed in the chemical composition of the different tubers, but all the diets were adjusted to an identical caloric level. Results showed no sign of toxic or detrimental effects on the rats' overall health as a result of these diets. The rats fed with the GMPs meal showed hematological and biochemical compositions of the plasma comparable to the control groups. No histopathological damage nor any structural disorganization, severe congestion, or acute inflammation were noticed in the rats' tissues. CONCLUSION Under these study conditions, the GMP diets did not induce any apparent or significant adverse effects on rats after 30 days of dietary administration in comparison with rats fed diets with the corresponding non-transgenic diet and the standard diet group. These two GMPs were therefore considered to be as safe as their commercial comparator. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Nour Chiab
- Laboratory of Plant amelioration and valorization of Agri-Resources, National school of Engineers of Sfax (ENIS), Sfax, Tunisia
| | - Nissaf Aoiadni
- Laboratory of Animal Ecophysiology, Faculty of Sciences of Sfax, Sfax, Tunisia
| | - Oumèma Nouri-Ellouz
- Laboratory of Plant amelioration and valorization of Agri-Resources, National school of Engineers of Sfax (ENIS), Sfax, Tunisia
| | | | - Manel Mellouli
- Anatomy and Pathological Cytology Laboratory, The University Hospital Complex (UHC) Habib Bourguiba, Sfax, Tunisia
| | - Tahya Sellami-Boudawara
- Anatomy and Pathological Cytology Laboratory, The University Hospital Complex (UHC) Habib Bourguiba, Sfax, Tunisia
| | - Chomous Kallel
- Hematology Laboratory, The University Hospital Complex (UHC) Habib Bourguiba, Sfax, Tunisia
| | - Fatma Makni-Ayadi
- Biochemistry Laboratory, The University Hospital Complex (UHC) Habib Bourguiba, Sfax, Tunisia
| | - Radhia Gargouri-Bouzid
- Laboratory of Plant amelioration and valorization of Agri-Resources, National school of Engineers of Sfax (ENIS), Sfax, Tunisia
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11
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Shi W, Ma Q, Yin W, Liu T, Song Y, Chen Y, Song L, Sun H, Hu S, Liu T, Jiang R, Lv D, Song B, Wang J, Liu X. The transcription factor StTINY3 enhances cold-induced sweetening resistance by coordinating starch resynthesis and sucrose hydrolysis in potato. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:4968-4980. [PMID: 35511088 DOI: 10.1093/jxb/erac171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 04/27/2022] [Indexed: 06/14/2023]
Abstract
The accumulation of reducing sugars in cold-stored tubers, known as cold-induced sweetening (CIS), negatively affects potato processing quality. The starch to sugar interconversion pathways that are altered in cold-stored CIS tubers have been elucidated, but the mechanism that regulates them remains largely unknown. This study identified a CBF/DREB transcription factor (StTINY3) that enhances CIS resistance by both activating starch biosynthesis and repressing the hydrolysis of sucrose to reducing sugars in detached cold-stored tubers. Silencing StTINY3 in a CIS-resistant genotype decreased CIS resistance, while overexpressing StTINY3 in a CIS-sensitive genotype increased CIS resistance, and altering StTINY3 expression was associated with expression changes in starch resynthesis-related genes. We showed first that overexpressing StTINY3 inhibited sucrose hydrolysis by enhancing expression of the invertase inhibitor gene StInvInh2, and second that StTINY3 promoted starch resynthesis by up-regulating a large subunit of the ADP-glucose pyrophosphorylase gene StAGPaseL3, and the glucose-6-phosphate transporter gene StG6PT2. Using electrophoretic mobility shift assays, we revealed that StTINY3 is a nuclear-localized transcriptional activator that directly binds to the dehydration-responsive element/CRT cis-element in the promoters of StInvInh2 and StAGPaseL3. Taken together, these findings established that StTINY3 influences CIS resistance in cold-stored tubers by coordinately modulating the starch to sugar interconversion pathways and is a good target for improving potato processing quality.
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Affiliation(s)
- Weiling Shi
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education. Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, PR China
| | - Qiuqin Ma
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Wang Yin
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Tiantian Liu
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education. Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, PR China
| | - Yuhao Song
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Yuanya Chen
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Linjin Song
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Hui Sun
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Shuting Hu
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Tengfei Liu
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education. Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, PR China
| | - Rui Jiang
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Dianqiu Lv
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Botao Song
- Key Laboratory of Horticultural Plant Biology (HZAU), Ministry of Education. Key Laboratory of Potato Biology and Biotechnology, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, PR China
| | - Jichun Wang
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
| | - Xun Liu
- Chongqing Key Laboratory of Biology and Genetic Breeding for Tuber and Root Crops, Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, PR China
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Xu HR, Liu Y, Yu TF, Hou ZH, Zheng JC, Chen J, Zhou YB, Chen M, Fu JD, Ma YZ, Wei WL, Xu ZS. Comprehensive Profiling of Tubby-Like Proteins in Soybean and Roles of the GmTLP8 Gene in Abiotic Stress Responses. FRONTIERS IN PLANT SCIENCE 2022; 13:844545. [PMID: 35548296 PMCID: PMC9083326 DOI: 10.3389/fpls.2022.844545] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 03/15/2022] [Indexed: 05/24/2023]
Abstract
Tubby-like proteins (TLPs) are transcription factors that are widely present in eukaryotes and generally participate in growth and developmental processes. Using genome databases, a total of 22 putative TLP genes were identified in the soybean genome, and unevenly distributed across 13 chromosomes. Phylogenetic analysis demonstrated that the predicted GmTLP proteins were divided into five groups (I-V). Gene structure, protein motifs, and conserved domains were analyzed to identify differences and common features among the GmTLPs. A three-dimensional protein model was built to show the typical structure of TLPs. Analysis of publicly available gene expression data showed that GmTLP genes were differentially expressed in response to abiotic stresses. Based on those data, GmTLP8 was selected to further explore the role of TLPs in soybean drought and salt stress responses. GmTLP8 overexpressors had improved tolerance to drought and salt stresses, whereas the opposite was true of GmTLP8-RNAi lines. 3,3-diaminobenzidine and nitro blue tetrazolium staining and physiological indexes also showed that overexpression of GmTLP8 enhanced the tolerance of soybean to drought and salt stresses; in addition, downstream stress-responsive genes were upregulated in response to drought and salt stresses. This study provides new insights into the function of GmTLPs in response to abiotic stresses.
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Affiliation(s)
- Hong-Ru Xu
- College of Agriculture, Yangtze University/Hubei Collaborative Innovation Center for Grain Industry/Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou, China
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Ying Liu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Tai-Fei Yu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Ze-Hao Hou
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Jia-Cheng Zheng
- College of Agronomy, Anhui Science and Technology University, Fengyang, China
| | - Jun Chen
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Yong-Bin Zhou
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Ming Chen
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Jin-Dong Fu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - You-Zhi Ma
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
| | - Wen-Liang Wei
- College of Agriculture, Yangtze University/Hubei Collaborative Innovation Center for Grain Industry/Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou, China
| | - Zhao-Shi Xu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS)/National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Beijing, China
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Genome-Wide Identification, Characterization, and Expression Profiling of AP2/ERF Superfamily Genes under Different Development and Abiotic Stress Conditions in Pecan ( Carya illinoinensis). Int J Mol Sci 2022; 23:ijms23062920. [PMID: 35328341 PMCID: PMC8950532 DOI: 10.3390/ijms23062920] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/03/2022] [Accepted: 03/04/2022] [Indexed: 02/01/2023] Open
Abstract
The ethylene-responsive element (AP2/ERF) is one of the keys and conserved transcription factors (TFs) in plants that play a vital role in regulating plant growth, development, and stress response. A total of 202 AP2/ERF genes were identified from the pecan genome and renamed according to the chromosomal distribution of the CiAP2/ERF genes. They were divided into four subfamilies according to the domain and phylogenetic analysis, including 26 AP2, 168 ERF, six RAV, and two Soloist gene family members. These genes were distributed randomly across the 16 chromosomes, and we found 19 tandem and 146 segmental duplications which arose from ancient duplication events. The gene structure and conserved motif analysis demonstrated the conserved nature of intron/exon organization and motifs among the AP2/ERF genes. Several cis-regulatory elements, which were related to light responsiveness, stress, and defense responses, were identified in the promoter regions of AP2/ERFs. The expression profiling of 202 CiAP2/ERF genes was assessed by using RNA-Seq data and qRT-PCR during development (pistillate flowering development, graft union development, and kernel development) and under abiotic stresses (waterlogging, drought). Moreover, the results suggested that the ERF-VII members may play a critical role in waterlogging stress. These findings provided new insights into AP2/ERF gene evolution and divergence in pecan and can be considered a valuable resource for further functional validation, as well as for utilization in a stress-resistance-variety development program.
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Behera TK, Krishna R, Ansari WA, Aamir M, Kumar P, Kashyap SP, Pandey S, Kole C. Approaches Involved in the Vegetable Crops Salt Stress Tolerance Improvement: Present Status and Way Ahead. FRONTIERS IN PLANT SCIENCE 2022; 12:787292. [PMID: 35281697 PMCID: PMC8916085 DOI: 10.3389/fpls.2021.787292] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 12/03/2021] [Indexed: 05/12/2023]
Abstract
Salt stress is one of the most important abiotic stresses as it persists throughout the plant life cycle. The productivity of crops is prominently affected by soil salinization due to faulty agricultural practices, increasing human activities, and natural processes. Approximately 10% of the total land area (950 Mha) and 50% of the total irrigated area (230 Mha) in the world are under salt stress. As a consequence, an annual loss of 12 billion US$ is estimated because of reduction in agriculture production inflicted by salt stress. The severity of salt stress will increase in the upcoming years with the increasing world population, and hence the forced use of poor-quality soil and irrigation water. Unfortunately, majority of the vegetable crops, such as bean, carrot, celery, eggplant, lettuce, muskmelon, okra, pea, pepper, potato, spinach, and tomato, have very low salinity threshold (ECt, which ranged from 1 to 2.5 dS m-1 in saturated soil). These crops used almost every part of the world and lakes' novel salt tolerance gene within their gene pool. Salt stress severely affects the yield and quality of these crops. To resolve this issue, novel genes governing salt tolerance under extreme salt stress were identified and transferred to the vegetable crops. The vegetable improvement for salt tolerance will require not only the yield influencing trait but also target those characters or traits that directly influence the salt stress to the crop developmental stage. Genetic engineering and grafting is the potential tool which can improve salt tolerance in vegetable crop regardless of species barriers. In the present review, an updated detail of the various physio-biochemical and molecular aspects involved in salt stress have been explored.
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Affiliation(s)
| | - Ram Krishna
- ICAR-Directorate of Onion and Garlic Research, Pune, India
| | | | - Mohd Aamir
- ICAR-Indian Institute of Vegetable Research, Varanasi, Varanasi, India
| | - Pradeep Kumar
- ICAR-Central Arid Zone Research Institute, Jodhpur, India
| | | | - Sudhakar Pandey
- ICAR-Indian Institute of Vegetable Research, Varanasi, Varanasi, India
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ain-Ali QU, Mushtaq N, Amir R, Gul A, Tahir M, Munir F. Genome-wide promoter analysis, homology modeling and protein interaction network of Dehydration Responsive Element Binding (DREB) gene family in Solanum tuberosum. PLoS One 2021; 16:e0261215. [PMID: 34914734 PMCID: PMC8675703 DOI: 10.1371/journal.pone.0261215] [Citation(s) in RCA: 2] [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: 05/28/2021] [Accepted: 11/27/2021] [Indexed: 12/24/2022] Open
Abstract
Dehydration Responsive Element Binding (DREB) regulates the expression of numerous stress-responsive genes, and hence plays a pivotal role in abiotic stress responses and tolerance in plants. The study aimed to develop a complete overview of the cis-acting regulatory elements (CAREs) present in S. tuberosum DREB gene promoters. A total of one hundred and four (104) cis-regulatory elements (CREs) were identified from 2.5kbp upstream of the start codon (ATG). The in-silico promoter analysis revealed variable sets of cis-elements and functional diversity with the predominance of light-responsive (30%), development-related (20%), abiotic stress-responsive (14%), and hormone-responsive (12%) elements in StDREBs. Among them, two light-responsive elements (Box-4 and G-box) were predicted in 64 and 61 StDREB genes, respectively. Two development-related motifs (AAGAA-motif and as-1) were abundant in StDREB gene promoters. Most of the DREB genes contained one or more Myeloblastosis (MYB) and Myelocytometosis (MYC) elements associated with abiotic stress responses. Hormone-responsive element i.e. ABRE was found in 59 out of 66 StDREB genes, which implied their role in dehydration and salinity stress. Moreover, six proteins were chosen corresponding to A1-A6 StDREB subgroups for secondary structure analysis and three-dimensional protein modeling followed by model validation through PROCHECK server by Ramachandran Plot. The predicted models demonstrated >90% of the residues in the favorable region, which further ensured their reliability. The present study also anticipated pocket binding sites and disordered regions (DRs) to gain insights into the structural flexibility and functional annotation of StDREB proteins. The protein association network determined the interaction of six selected StDREB proteins with potato proteins encoded by other gene families such as MYB and NAC, suggesting their similar functional roles in biological and molecular pathways. Overall, our results provide fundamental information for future functional analysis to understand the precise molecular mechanisms of the DREB gene family in S. tuberosum.
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Affiliation(s)
- Qurat-ul ain-Ali
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Nida Mushtaq
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Rabia Amir
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Alvina Gul
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Muhammad Tahir
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Faiza Munir
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
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Hezema YS, Shukla MR, Goel A, Ayyanath MM, Sherif SM, Saxena PK. Rootstocks Overexpressing StNPR1 and StDREB1 Improve Osmotic Stress Tolerance of Wild-Type Scion in Transgrafted Tobacco Plants. Int J Mol Sci 2021; 22:8398. [PMID: 34445105 PMCID: PMC8395105 DOI: 10.3390/ijms22168398] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 12/24/2022] Open
Abstract
In grafted plants, the movement of long-distance signals from rootstocks can modulate the development and function of the scion. To understand the mechanisms by which tolerant rootstocks improve scion responses to osmotic stress (OS) conditions, mRNA transport of osmotic responsive genes (ORGs) was evaluated in a tomato/potato heterograft system. In this system, Solanum tuberosum was used as a rootstock and Solanum lycopersicum as a scion. We detected changes in the gene expression levels of 13 out of the 21 ORGs tested in the osmotically stressed plants; of these, only NPR1 transcripts were transported across the graft union under both normal and OS conditions. Importantly, OS increased the abundance of StNPR1 transcripts in the tomato scion. To examine mRNA mobility in transgrafted plants, StNPR1 and StDREB1 genes representing the mobile and non-mobile transcripts, respectively, were overexpressed in tobacco (Nicotiana tabacum). The evaluation of transgenic tobacco plants indicated that overexpression of these genes enhanced the growth and improved the physiological status of transgenic plants growing under OS conditions induced by NaCl, mannitol and polyethylene glycol (PEG). We also found that transgenic tobacco rootstocks increased the OS tolerance of the WT-scion. Indeed, WT scions on transgenic rootstocks had higher ORGs transcript levels than their counterparts on non-transgenic rootstocks. However, neither StNPR1 nor StDREB1 transcripts were transported from the transgenic rootstock to the wild-type (WT) tobacco scion, suggesting that other long-distance signals downstream these transgenes could have moved across the graft union leading to OS tolerance. Overall, our results signify the importance of StNPR1 and StDREB1 as two anticipated candidates for the development of stress-resilient crops through transgrafting technology.
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Affiliation(s)
- Yasmine S. Hezema
- Gosling Research Institute for Plant Preservation, Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada; (Y.S.H.); (M.R.S.); (A.G.); (M.M.A.)
- Department of Horticulture, Damanhour University, Damanhour 22713, El-Beheira, Egypt
| | - Mukund R. Shukla
- Gosling Research Institute for Plant Preservation, Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada; (Y.S.H.); (M.R.S.); (A.G.); (M.M.A.)
| | - Alok Goel
- Gosling Research Institute for Plant Preservation, Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada; (Y.S.H.); (M.R.S.); (A.G.); (M.M.A.)
| | - Murali M. Ayyanath
- Gosling Research Institute for Plant Preservation, Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada; (Y.S.H.); (M.R.S.); (A.G.); (M.M.A.)
| | - Sherif M. Sherif
- Alson H. Smith Jr. Agricultural Research and Extension Center, School of Plant and Environmental Sciences, Virginia Tech, Winchester, VA 22602, USA
| | - Praveen K. Saxena
- Gosling Research Institute for Plant Preservation, Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada; (Y.S.H.); (M.R.S.); (A.G.); (M.M.A.)
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The Genetic Regulation of Secondary Metabolic Pathways in Response to Salinity and Drought as Abiotic Stresses. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11156668] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Global development has generated a plethora of unfavorable and adverse environmental factors for the living organisms in the ecosystem. Plants are sessile organisms, and they are crucial to sustain life on earth. Since plants are sessile, they face a great number of environmental challenges related to abiotic stresses, such as temperature fluctuation, drought, salinity, flood and metal contamination. Salinity and drought are considered major abiotic stresses that negatively affect the plants’ growth and production of useful content. However, plants have evolved various molecular mechanisms to increase their tolerance to these environmental stresses. There is a whole complex system of communication (cross-talk) through massive signaling cascades that are activated and modulated in response to salinity and drought. Secondary metabolites are believed to play significant roles in the plant’s response and resistance to salinity and drought stress. Until recently, attempts to unravel the biosynthetic pathways were limited mainly due to the inadequate plant genomics resources. However, recent advancements in generating high-throughput “omics” datasets, computational tools and functional genomics approach integration have aided in the elucidation of biosynthetic pathways of many plant bioactive metabolites. This review gathers comprehensive knowledge of plants’ complex system that is involved in the response and resistance to salinity and water deficit stresses as abiotic stress. Additionally, it offers clues in determining the genes involved in this complex and measures its activity. It covers basic information regarding the signaling molecules involved in salinity and drought resistance and how plant hormones regulate the cross-talking mechanism with emphasis on transcriptional activity. Moreover, it discusses many studies that illustrate the relationship between salinity and drought and secondary metabolite production. Furthermore, several transcriptome analysis research papers of medicinal plants are illustrated. The aim of this review is to be a key for any researcher that is aspiring to study the relationship between salinity and drought stresses and secondary metabolite production at the transcriptome and transcription level.
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18
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Manna M, Thakur T, Chirom O, Mandlik R, Deshmukh R, Salvi P. Transcription factors as key molecular target to strengthen the drought stress tolerance in plants. PHYSIOLOGIA PLANTARUM 2021; 172:847-868. [PMID: 33180329 DOI: 10.1111/ppl.13268] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/23/2020] [Accepted: 11/07/2020] [Indexed: 05/03/2023]
Abstract
Amid apprehension of global climate change, crop plants are inevitably confronted with a myriad of abiotic stress factors during their growth that inflicts a serious threat to their development and overall productivity. These abiotic stresses comprise extreme temperature, pH, high saline soil, and drought stress. Among different abiotic stresses, drought is considered the most calamitous stressor with its serious impact on the crops' yield stability. The development of climate-resilient crops that withstands reduced water availability is a major focus of the scientific fraternity to ensure the food security of the sharply increasing population. Numerous studies aim to recognize the key regulators of molecular and biochemical processes associated with drought stress tolerance response. A few potential candidates are now considered as promising targets for crop improvement. Transcription factors act as a key regulatory switch controlling the gene expression of diverse biological processes and, eventually, the metabolic processes. Understanding the role and regulation of the transcription factors will facilitate the crop improvement strategies intending to develop and deliver agronomically-superior crops. Therefore, in this review, we have emphasized the molecular avenues of the transcription factors that can be exploited to engineer drought tolerance potential in crop plants. We have discussed the molecular role of several transcription factors, such as basic leucine zipper (bZIP), dehydration responsive element binding (DREB), DNA binding with one finger (DOF), heat shock factor (HSF), MYB, NAC, TEOSINTE BRANCHED1/CYCLOIDEA/PCF (TCP), and WRKY. We have also highlighted candidate transcription factors that can be used for the development of drought-tolerant crops.
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Affiliation(s)
- Mrinalini Manna
- National Institute of Plant Genome Research, New Delhi, India
| | - Tanika Thakur
- Agriculture Biotechnology Department, National Agri-Food Biotechnology Institute, Mohali, Punjab, India
| | - Oceania Chirom
- National Institute of Plant Genome Research, New Delhi, India
| | - Rushil Mandlik
- Agriculture Biotechnology Department, National Agri-Food Biotechnology Institute, Mohali, Punjab, India
| | - Rupesh Deshmukh
- Agriculture Biotechnology Department, National Agri-Food Biotechnology Institute, Mohali, Punjab, India
| | - Prafull Salvi
- Agriculture Biotechnology Department, National Agri-Food Biotechnology Institute, Mohali, Punjab, India
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Raina M, Kumar A, Yadav N, Kumari S, Yusuf MA, Mustafiz A, Kumar D. StCaM2, a calcium binding protein, alleviates negative effects of salinity and drought stress in tobacco. PLANT MOLECULAR BIOLOGY 2021; 106:85-108. [PMID: 33629224 DOI: 10.1007/s11103-021-01131-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 02/09/2021] [Indexed: 05/20/2023]
Abstract
KEY MESSAGE Overexpression of StCaM2 in tobacco promotes plant growth and confers increased salinity and drought tolerance by enhancing the photosynthetic efficiency, ROS scavenging, and recovery from membrane injury. Calmodulins (CaMs) are important Ca2+ sensors that interact with effector proteins and drive a network of signal transduction pathways involved in regulating the growth and developmental pattern of plants under stress. Herein, using in silico analysis, we identified 17 CaM isoforms (StCaM) in potato. Expression profiling revealed different temporal and spatial expression patterns of these genes, which were modulated under abiotic stress. Among the identified StCaM genes, StCaM2 was found to have the largest number of abiotic stress responsive promoter elements. In addition, StCaM2 was upregulated in response to some of the selected abiotic stress in potato tissues. Overexpression of StCaM2 in transgenic tobacco plants enhanced their tolerance to salinity and drought stress. Accumulation of reactive oxygen species was remarkably decreased in transgenic lines compared to that in wild type plants. Chlorophyll a fluorescence analysis suggested better performance of photosystem II in transgenic plants under stress compared to that in wild type plants. The increase in salinity stress tolerance in StCaM2-overexpressing plants was also associated with a favorable K+/Na+ ratio. The enhanced tolerance to abiotic stresses correlated with the increase in the activities of anti-oxidative enzymes in transgenic tobacco plants. Overall, our results suggest that StCaM2 can be a novel candidate for conferring salt and drought tolerance in plants.
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Affiliation(s)
- Meenakshi Raina
- Department of Botany, Central University of Jammu, Rahya-Suchani (Bagla), Dist- Samba, Jammu and Kashmir, 181143, India
| | - Ashish Kumar
- Plant Molecular Biology Laboratory, Faculty of Life Sciences and Biotechnology, South Asian University, Akbar Bhawan, Chanakyapuri, New Delhi, 110021, India
| | - Nikita Yadav
- Plant Molecular Biology Laboratory, Faculty of Life Sciences and Biotechnology, South Asian University, Akbar Bhawan, Chanakyapuri, New Delhi, 110021, India
| | - Sumita Kumari
- Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu and Kashmir, India
| | - Mohd Aslam Yusuf
- Department of Bioengineering, Integral University, Dasauli, Kursi Road, Lucknow, 226026, India
| | - Ananda Mustafiz
- Plant Molecular Biology Laboratory, Faculty of Life Sciences and Biotechnology, South Asian University, Akbar Bhawan, Chanakyapuri, New Delhi, 110021, India.
| | - Deepak Kumar
- Department of Botany, Central University of Jammu, Rahya-Suchani (Bagla), Dist- Samba, Jammu and Kashmir, 181143, India.
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India.
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Riaz MW, Lu J, Shah L, Yang L, Chen C, Mei XD, Xue L, Manzoor MA, Abdullah M, Rehman S, Si H, Ma C. Expansion and Molecular Characterization of AP2/ERF Gene Family in Wheat ( Triticum aestivum L.). Front Genet 2021; 12:632155. [PMID: 33868370 PMCID: PMC8044323 DOI: 10.3389/fgene.2021.632155] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/04/2021] [Indexed: 01/02/2023] Open
Abstract
The AP2/ERF is a large protein family of transcription factors, playing an important role in signal transduction, plant growth, development, and response to various stresses. AP2/ERF super-family is identified and functionalized in a different plant but no comprehensive and systematic analysis in wheat (Triticum aestivum L.) has been reported. However, a genome-wide and functional analysis was performed and identified 322 TaAP2/ERF putative genes from the wheat genome. According to the phylogenetic and structural analysis, TaAP2/ERF genes were divided into 12 subfamilies (Ia, Ib, Ic, IIa, IIb, IIc, IIIa, IIIb, IIIc, IVa, IVb, and IVc). Furthermore, conserved motifs and introns/exons analysis revealed may lead to functional divergence within clades. Cis-Acting analysis indicated that many elements were involved in stress-related and plant development. Chromosomal location showed that 320 AP2/ERF genes were distributed among 21 chromosomes and 2 genes were present in a scaffold. Interspecies microsynteny analysis revealed that maximum orthologous between Arabidopsis, rice followed by wheat. Segment duplication events have contributed to the expansion of the AP2/ERF family and made this family larger than rice and Arabidopsis. Additionally, AP2/ERF genes were differentially expressed in wheat seedlings under the stress treatments of heat, salt, and drought, and expression profiles were verified by qRT-PCR. Remarkably, the RNA-seq data exposed that AP2/ERF gene family might play a vital role in stress-related. Taken together, our findings provided useful and helpful information to understand the molecular mechanism and evolution of the AP2/ERF gene family in wheat.
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Affiliation(s)
- Muhammad Waheed Riaz
- College of Agronomy, Anhui Agricultural University, Hefei, China.,Key Laboratory of Wheat Biology and Genetic Improvement on Southern Yellow & Huai River Valley, Ministry of Agriculture and Rural Affairs, Hefei, China
| | - Jie Lu
- College of Agronomy, Anhui Agricultural University, Hefei, China.,Key Laboratory of Wheat Biology and Genetic Improvement on Southern Yellow & Huai River Valley, Ministry of Agriculture and Rural Affairs, Hefei, China
| | - Liaqat Shah
- Department of Botany, Mir Chakar Khan Rind University, Sibi, Pakistan
| | - Liu Yang
- College of Agronomy, Anhui Agricultural University, Hefei, China.,Key Laboratory of Wheat Biology and Genetic Improvement on Southern Yellow & Huai River Valley, Ministry of Agriculture and Rural Affairs, Hefei, China
| | - Can Chen
- College of Agronomy, Anhui Agricultural University, Hefei, China.,Key Laboratory of Wheat Biology and Genetic Improvement on Southern Yellow & Huai River Valley, Ministry of Agriculture and Rural Affairs, Hefei, China
| | - Xu Dong Mei
- College of Agronomy, Anhui Agricultural University, Hefei, China.,Key Laboratory of Wheat Biology and Genetic Improvement on Southern Yellow & Huai River Valley, Ministry of Agriculture and Rural Affairs, Hefei, China
| | - Liu Xue
- College of Agronomy, Anhui Agricultural University, Hefei, China.,Key Laboratory of Wheat Biology and Genetic Improvement on Southern Yellow & Huai River Valley, Ministry of Agriculture and Rural Affairs, Hefei, China
| | | | - Muhammad Abdullah
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Shamsur Rehman
- National Engineering Laboratory of Crop Stress Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Hongqi Si
- College of Agronomy, Anhui Agricultural University, Hefei, China.,Key Laboratory of Wheat Biology and Genetic Improvement on Southern Yellow & Huai River Valley, Ministry of Agriculture and Rural Affairs, Hefei, China
| | - Chuanxi Ma
- College of Agronomy, Anhui Agricultural University, Hefei, China.,Key Laboratory of Wheat Biology and Genetic Improvement on Southern Yellow & Huai River Valley, Ministry of Agriculture and Rural Affairs, Hefei, China.,National United Engineering Laboratory for Crop Stress Resistance Breeding, Hefei, China.,Anhui Key Laboratory of Crop Biology, Hefei, China
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21
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Unravelling Differences in Candidate Genes for Drought Tolerance in Potato ( Solanum tuberosum L.) by Use of New Functional Microsatellite Markers. Genes (Basel) 2021; 12:genes12040494. [PMID: 33800602 PMCID: PMC8067248 DOI: 10.3390/genes12040494] [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: 02/23/2021] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 12/26/2022] Open
Abstract
Potato is regarded as drought sensitive and most vulnerable to climate changes. Its cultivation in drought prone regions or under conditions of more frequent drought periods, especially in subtropical areas, requires intensive research to improve drought tolerance in order to guarantee high yields under limited water supplies. A candidate gene approach was used to develop functional simple sequence repeat (SSR) markers for association studies in potato with the aim to enhance breeding for drought tolerance. SSR primer combinations, mostly surrounding interrupted complex and compound repeats, were derived from 103 candidate genes for drought tolerance. Validation of the SSRs was performed in an association panel representing 34 mainly starch potato cultivars. Seventy-five out of 154 SSR primer combinations (49%) resulted in polymorphic, highly reproducible banding patterns with polymorphic information content (PIC) values between 0.11 and 0.90. Five SSR markers identified allelic differences between the potato cultivars that showed significant associations with drought sensitivity. In all cases, the group of drought-sensitive cultivars showed predominantly an additional allele, indicating that selection against these alleles by marker-assisted breeding might confer drought tolerance. Further studies of these differences in the candidate genes will elucidate their role for an improved performance of potatoes under water-limited conditions.
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22
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Chiab N, Kammoun M, Charfeddine S, Bouaziz D, Gouider M, Gargouri-Bouzid R. Impact of the overexpression of the StDREB1 transcription factor on growth parameters, yields, and chemical composition of tubers from greenhouse and field grown potato plants. JOURNAL OF PLANT RESEARCH 2021; 134:249-259. [PMID: 33462768 DOI: 10.1007/s10265-020-01245-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
Potato plants are often exposed to biotic and abiotic stresses that negatively impact their growth, development, and yield. Plants respond to different stresses by inducing large numbers of stress-responsive genes, which can be either functional or regulatory genes. Among regulatory genes, Dehydration Responsive Element Binding (DREB) genes are considered as one of the main groups of transcriptional regulators. The overexpression of these factors in several transgenic plants leads to enhancement of abiotic stress tolerance. However, a number of reports showed that the overexpression of DREB factors under control of constitutive promoter, affects their morphology and production. Therefore, it becomes interesting to evaluate the effect of the overexpression of this StDREB1 transcription factor on plant growth, morphology, yield and tuber composition under both greenhouse and field culture conditions. To our knowledge, there is no available data on the effect of DREBA-4 overexpression on potato plants morphology and yield. Indeed, most studies focused on DREB genes from A-1 and A-2 groups for other plant species. Our results showed that StDREB1, a A-4 group of DREB gene from potato (Solanum tuberosum L.), overexpressing plants did not show any growth retardation. On the contrary, they seem to be more vigorous, and produced higher tuber weight in greenhouse and field culture than the wild type (WT) plants. Moreover, the overexpression of StDREB1 transcription factor seemed to have an effect on tuber quality in terms of dry matter, starch contents and reducing sugars in comparison to the WT tubers. These data suggest that the StDREB1 gene from A-4 group of DREB subfamily can be a good candidate in potato breeding for stress tolerance.
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Affiliation(s)
- Nour Chiab
- Laboratoire d'amelioration des plantes et valorisation des agro-ressources, Ecole Nationale d'ingenieurs de Sfax (ENIS), Route Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia.
| | - Mariem Kammoun
- Laboratoire d'amelioration des plantes et valorisation des agro-ressources, Ecole Nationale d'ingenieurs de Sfax (ENIS), Route Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia
| | - Safa Charfeddine
- Laboratoire d'amelioration des plantes et valorisation des agro-ressources, Ecole Nationale d'ingenieurs de Sfax (ENIS), Route Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia
| | - Donia Bouaziz
- Laboratoire d'amelioration des plantes et valorisation des agro-ressources, Ecole Nationale d'ingenieurs de Sfax (ENIS), Route Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia
| | - Mbarka Gouider
- Laboratoire d'amelioration des plantes et valorisation des agro-ressources, Ecole Nationale d'ingenieurs de Sfax (ENIS), Route Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia
| | - Radhia Gargouri-Bouzid
- Laboratoire d'amelioration des plantes et valorisation des agro-ressources, Ecole Nationale d'ingenieurs de Sfax (ENIS), Route Soukra Km 4, B.P 1173, 3038, Sfax, Tunisia
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23
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Li W, Chen Y, Ye M, Lu H, Wang D, Chen Q. Evolutionary history of the C-repeat binding factor/dehydration-responsive element-binding 1 (CBF/DREB1) protein family in 43 plant species and characterization of CBF/DREB1 proteins in Solanum tuberosum. BMC Evol Biol 2020; 20:142. [PMID: 33143637 PMCID: PMC7607821 DOI: 10.1186/s12862-020-01710-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 10/26/2020] [Indexed: 11/10/2022] Open
Abstract
Background Plants are easily affected by temperature variations, and high temperature (heat stress) and low temperature (cold stress) will lead to poor plant development and reduce crop yields. Therefore, it is very important to identify resistance genes for improving the ability of plants to resist heat stress or cold stress by using modern biotechnology. Members of the C-repeat binding factor/Dehydration responsive element-binding 1 (CBF/DREB1) protein family are related to the stress resistance of many plant species. These proteins affect the growth and development of plants and play vital roles during environmental stress (cold, heat, drought, salt, etc.). In this study, we identified CBF/DREB1 genes from 43 plant species (including algae, moss, ferns, gymnosperms, angiosperms) by using bioinformatic methods to clarify the characteristics of the CBF/DREB1 protein family members and their functions in potato under heat and cold stresses. Results In this study, we identified 292 CBF/DREB1 proteins from 43 plant species. However, no CBF/DREB1 protein was found in algae, moss, ferns, or gymnosperms; members of this protein family exist only in angiosperms. Phylogenetic analysis of all the CBF/DREB1 proteins revealed five independent groups. Among them, the genes of group I do not exist in eudicots and are found only in monocots, indicating that these genes have a special effect on monocots. The analysis of motifs, gene duplication events, and the expression data from the PGSC website revealed the gene structures, evolutionary relationships, and expression patterns of the CBF/DREB1 proteins. In addition, analysis of the transcript levels of the 8 CBF/DREB1 genes in potato (Solanum tuberosum) under low-temperature and high-temperature stresses showed that these genes were related to temperature stresses. In particular, the expression levels of StCBF3 and StCBF4 in the leaves, stems, and roots significantly increased under high-temperature conditions, which suggested that StCBF3 and StCBF4 may be closely related to heat tolerance in potato. Conclusion Overall, members of the CBF/DREB1 protein family exist only in angiosperms and plays an important role in the growth and development of plants. In addition, the CBF/DREB1 protein family is related to the heat and cold resistance of potato. Our research revealed the evolution of the CBF/DREB1 family, and is useful for studying the precise functions of the CBF/DREB1 proteins when the plants are developing and are under temperature stress.
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Affiliation(s)
- Wan Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yue Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Minghui Ye
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Haibin Lu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - Dongdong Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - Qin Chen
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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24
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Niu X, Luo T, Zhao H, Su Y, Ji W, Li H. Identification of wheat DREB genes and functional characterization of TaDREB3 in response to abiotic stresses. Gene 2020; 740:144514. [PMID: 32112985 DOI: 10.1016/j.gene.2020.144514] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/08/2020] [Accepted: 02/25/2020] [Indexed: 01/21/2023]
Abstract
As an important transcription factor family, DREB transcription factors play important roles in response to abiotic stresses. In this study, we identified wheat DREB genes at genome-level, and characterized the functions of TaDREB genes. Totally, there are 210 TaDREB genes, which can be divided into 6 subgroups. Some of these genes display tissue-specific expression patterns. Among them, the expression of three TaDREB3 homoeologous genes is induced by abiotic stresses. Meanwhile, as alternatively spliced genes, they generate three isoforms respectively. Transcripts I and II encode DREB proteins, while transcript III does not generate DREB proteins. Transgenic Arabidopsis over-expressing TaDREB3-AI displayed enhanced resistance to drought, salt and heat stresses. The physical indexes and the expression of stress-related genes further verified the functions in response to abiotic stresses. Our results lay a foundation for further study of wheat DREB genes. Especially, our findings indicate that TaDREB3 genes can be used for crop genetic improvement.
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Affiliation(s)
- Xin Niu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China.
| | - Tengli Luo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China.
| | - Hongyan Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China.
| | - Yali Su
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China.
| | - Wanquan Ji
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China.
| | - Haifeng Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China; Xinjiang Agricultural Vocational Technical College, Changji, China.
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25
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Li H, Dong Q, Zhao Q, Shi S, Ran K. Isolation, sequencing, and expression analysis of 30 AP2/ERF transcription factors in apple. PeerJ 2020; 8:e8391. [PMID: 31988809 PMCID: PMC6970539 DOI: 10.7717/peerj.8391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 12/13/2019] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND AP2/ERF transcription factors are involved in the regulation of plant growth, development, and stress responses. Our research objective was to characterize novel apple (Malus × domestica Borkh.) genes encoding AP2/ERF transcription factors involved in regulation of plant growth, development, and stress response. The transcriptional level of apple AP2/ERF genes in different tissues and under various biotic and abiotic stress was determined to provide valuable insights into the function of AP2/ERF transcription factors in apple. METHODS Thirty full-length cDNA sequences of apple AP2/ERF genes were isolated from 'Zihong Fuji' apple (Malus × domestica cv. Zihong Fuji) via homologous comparison and RT-PCR confirmation, and the obtained cDNA sequences and the deduced amino acid sequences were analyzed with bioinformatics methods. Expression levels of apple AP2/ERF genes were detected in 16 different tissues using a known array. Expression patterns of apple AP2/ERF genes were detected in response to Alternaria alternata apple pathotype (AAAP) infection using RNA-seq with existing data, and the expression of apple AP2/ERF genes was analyzed under NaCl and mannitol treatments using qRT-PCR. RESULTS The sequencing results produced 30 cDNAs (designated as MdERF3-8, MdERF11, MdERF16-19, MdERF22-28, MdERF31-35, MdERF39, MdAP2D60, MdAP2D62-65, and MdRAV2). Phylogenetic analysis revealed that MdERF11/16, MdERF33/35, MdERF34/39, and MdERF18/23 belonged to groups A-2, A-4, A-5, and A-6 of the DREB subfamily, respectively; MdERF31, MdERF19, MdERF4/25/28/32, MdERF24, MdERF5/6/27, and MdERF3/7/8/17/22/26 belonged to groups B-1, B-2, B-3, B-4, B-5, and B-6 of the ERF subfamily, respectively; MdAP2D60 and MdAP2D62/63/64/65 belonged to the AP2 subfamily; and MdRAV2 belonged to the RAV subfamily. Array results indicated that 30 apple AP2/ERF genes were expressed in all examined tissues to different degrees. RNA-seq results using previously reported data showed that many members of the apple ERF and DREB subfamilies were induced by Alternaria alternate apple pathotype (AAAP) infection. Under salt treatment, many members in the apple ERF and DREB subfamilies were transcriptionally up or down-regulated. Under mannitol treatment, many members of the apple ERF, DREB, and AP2 subfamilies were induced at the transcriptional level. Taken together, the results indicated that the cloned apple AP2/ERF genes were expressed in all examined tissues. These genes were up-regulated or down-regulated in response to AAAP infection and to salt or mannitol treatment, which suggested they may be involved in regulating growth, development, and stress response in apple.
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Affiliation(s)
- Huifeng Li
- Shandong Institute of Pomology, Tai’an, China
| | - Qinglong Dong
- College of Horticulture, Northwest A and F University, Yangling, China
| | - Qiang Zhao
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Song Shi
- Nanjing Agricultural University, Nanjing, China
| | - Kun Ran
- Shandong Institute of Pomology, Tai’an, China
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Sarkar T, Thankappan R, Mishra GP, Nawade BD. Advances in the development and use of DREB for improved abiotic stress tolerance in transgenic crop plants. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2019; 25:1323-1334. [PMID: 31736537 PMCID: PMC6825097 DOI: 10.1007/s12298-019-00711-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 05/07/2019] [Accepted: 08/29/2019] [Indexed: 05/09/2023]
Abstract
Abiotic stresses negatively influence the survival, biomass production, and yield of crops. Tolerance to diverse abiotic stresses in plants is regulated by multiple genes responding differently to various stress conditions. Genetic engineering approaches have helped develop transgenic crops with improved abiotic stress tolerance including yields. The dehydration-responsive element binding protein (DREB) is a stress-responsive transcription factor that modulates the expression of downstream stress-inducible genes, which confer simultaneous tolerance to multiple stresses. This review focuses on advances in the development of DREB transgenic crops and their characterization under various abiotic stress conditions. It further discusses the mechanistic aspects of abiotic stress tolerance, yield gain, the fate of transgenic plants under controlled and field conditions and future research directions toward commercialization of DREB transgenic crops.
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Affiliation(s)
- Tanmoy Sarkar
- ICAR-Directorate of Groundnut Research, Post Box 1, Junagadh, Gujarat 362001 India
- Central Sericultural Research & Training Institute (CSRTI), Mysuru, Karnataka 570 008 India
| | | | - Gyan P. Mishra
- ICAR-Directorate of Groundnut Research, Post Box 1, Junagadh, Gujarat 362001 India
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, Delhi 110012 India
| | - Bhagwat D. Nawade
- ICAR-Directorate of Groundnut Research, Post Box 1, Junagadh, Gujarat 362001 India
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27
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Srivastava R, Kumar R. The expanding roles of APETALA2/Ethylene Responsive Factors and their potential applications in crop improvement. Brief Funct Genomics 2019; 18:240-254. [PMID: 30783669 DOI: 10.1093/bfgp/elz001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 11/29/2018] [Accepted: 01/23/2019] [Indexed: 01/10/2023] Open
Abstract
Understanding the molecular basis of the gene-regulatory networks underlying agronomic traits or plant responses to abiotic/biotic stresses is very important for crop improvement. In this context, transcription factors, which either singularly or in conjugation directly control the expression of many target genes, are suitable candidates for improving agronomic traits via genetic engineering. In this regard, members of one of the largest class of plant-specific APETALA2/Ethylene Response Factor (AP2/ERF) superfamily, which is implicated in various aspects of development and plant stress adaptation responses, are considered high-value targets for crop improvement. Besides their long-known regulatory roles in mediating plant responses to abiotic stresses such as drought and submergence, the novel roles of AP2/ERFs during fruit ripening or secondary metabolites production have also recently emerged. The astounding functional plasticity of AP2/ERF members is considered to be achieved by their interplay with other regulatory networks and signalling pathways. In this review, we have integrated the recently accumulated evidence from functional genomics studies and described their newly emerged functions in plants. The key structural features of AP2/ERF proteins and the modes of their action are briefly summarized. The importance of AP2/ERFs in plant development and stress responses and a summary of the event of their successful applications in crop improvement programs are also provided. Altogether, we envisage that the synthesized information presented in this review will be useful to design effective strategies for improving agronomic traits in crop plants.
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Affiliation(s)
- Rajat Srivastava
- Plant Translational Research Laboratory, Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Rahul Kumar
- Plant Translational Research Laboratory, Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, India
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28
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Charfeddine M, Charfeddine S, Ghazala I, Bouaziz D, Bouzid RG. Investigation of the response to salinity of transgenic potato plants overexpressing the transcription factor StERF94. J Biosci 2019. [DOI: 10.1007/s12038-019-9959-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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29
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Wang L, Liu Y, Li D, Feng S, Yang J, Zhang J, Zhang J, Wang D, Gan Y. Improving salt tolerance in potato through overexpression of AtHKT1 gene. BMC PLANT BIOLOGY 2019; 19:357. [PMID: 31419943 PMCID: PMC6697938 DOI: 10.1186/s12870-019-1963-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Accepted: 08/06/2019] [Indexed: 05/07/2023]
Abstract
BACKGROUND Survival of plants in response to salinity stress is typically related to Na+ toxicity, but little is known about how heterologous high-affinity potassium transporter (HKT) may help alleviate salt-induced damages in potato (Solanum tuberosum L.). RESULTS In this study, we used the Arabidopsis thaliana high-affinity potassium transporter gene (AtHKT1) to enhance the capacity of potato plants to tolerate salinity stress by decreasing Na+ content and improving K+/Na+ ratio in plant leaves, while maintaining osmotic balance. Seven AtHKT1 transformed potato lines (namely T1, T2, T3, T5, T11, T13 and T15) were compared with non-transgenic control plant at molecule and whole-plant levels. The lines T3 and T13 had the highest AtHKT1 expression with the tolerance index (an quantitative assessment) being 6.8 times that of the control. At 30 days under 100 and 150 mmol L- 1 NaCl stress treatments, the T3 and T13 lines had least reductions in net photosynthetic rate, stomatal conductance and transpiration rate among the seven lines, leading to the increased water use efficiency and decreased yield loss. CONCLUSIONS We conclude that the constitutive overexpression of AtHKT1 reduces Na+ accumulation in potato leaves and promotes the K+/Na+ homeostasis that minimizes osmotic imbalance, maintains photosynthesis and stomatal conductance, and increases plant productivity.
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Affiliation(s)
- Li Wang
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, 730070 China
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Yuhui Liu
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, 730070 China
| | - Dan Li
- Longdong University, Qingyang, 745000 Gansu China
| | - Shoujiang Feng
- Institute of Soil, Fertilizer and Water-saving Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou, 730070 China
| | - Jiangwei Yang
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Jingjing Zhang
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, 730070 China
| | - Junlian Zhang
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, 730070 China
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070 China
| | - Di Wang
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, 730070 China
- College of Agronomy, Gansu Agricultural University, Lanzhou, 730070 China
| | - Yantai Gan
- Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Swift Current, SK S9H 3X2 Canada
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30
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El-Esawi MA, Alayafi AA. Overexpression of StDREB2 Transcription Factor Enhances Drought Stress Tolerance in Cotton ( Gossypium barbadense L.). Genes (Basel) 2019; 10:genes10020142. [PMID: 30769841 PMCID: PMC6409991 DOI: 10.3390/genes10020142] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/17/2019] [Accepted: 01/21/2019] [Indexed: 01/24/2023] Open
Abstract
Drought stress significantly restricts plant growth and crop productivity. Cotton is the most important textile fiber and oilseed crop worldwide, and its cultivation is affected by drought stress, particularly in dry regions. Improving cotton tolerance to drought stress using the advanced genetic engineering technologies is a promising strategy to maintain crop production and fiber quality and meet the increasing worldwide fiber and oil demand. Dehydration-responsive element binding (DREB) transcription factors play a main role in regulating stresses-tolerance pathways in plant. This study investigated whether potato DREB2 (StDREB2) overexpression can improve drought tolerance in cotton. StDREB2 transcription factor was isolated and overexpressed in cotton. Plant biomass, boll number, relative water content, soluble sugars content, soluble protein content, chlorophyll content, proline content, gas-exchange parameters, and antioxidants enzymes (POD, CAT, SOD, GST) activity of the StDREB2-overexpressing cotton plants were higher than those of wild type plants. By contrast, the contents of malondialdehyde, hydrogen peroxide and superoxide anion of StDREB2-overexpressing transgenic plants were significantly lower than that of the wild type plants. Moreover, the transgenic cotton lines revealed higher expression levels of antioxidant genes (SOD, CAT, POD, GST) and stress-tolerant genes (GhERF2, GhNAC3, GhRD22, GhDREB1A, GhDREB1B, GhDREB1C) compared to wild-type plants. Taken together, these findings showed that StDREB2 overexpression augments drought stress tolerance in cotton by inducing plant biomass, gas-exchange characteristics, reactive oxygen species (ROS) scavenging, antioxidant enzymes activities, osmolytes accumulation, and expression of stress-related genes. As a result, StDREB2 could be an important candidate gene for drought-tolerant cotton breeding.
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Affiliation(s)
- Mohamed A El-Esawi
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
| | - Aisha A Alayafi
- Biological Sciences Department, Faculty of Science, University of Jeddah, Jeddah 21577, Saudi Arabia.
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Sharma V, Goel P, Kumar S, Singh AK. An apple transcription factor, MdDREB76, confers salt and drought tolerance in transgenic tobacco by activating the expression of stress-responsive genes. PLANT CELL REPORTS 2019; 38:221-241. [PMID: 30511183 DOI: 10.1007/s00299-018-2364-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
KEY MESSAGE An apple gene, MdDREB76 encodes a functional transcription factor and imparts salinity and drought stress endurance to transgenic tobacco by activating expression of stress-responsive genes. The dehydration-responsive element (DRE)-binding protein (DREB) transcription factors are well known to be involved in regulating abiotic stress-mediated gene expression in plants. In this study, MdDREB76 gene was isolated from apple (Malus x domestica), which encodes a functional transcription factor protein. Overexpression of MdDREB76 in tobacco conferred salt and drought stress tolerance to transgenic lines by inducing antioxidant enzymes, such as superoxide dismutase, ascorbate peroxidase and catalase. The higher membrane stability index, relative water content, proline, total soluble sugar content and lesser H2O2content, electrolyte leakage and lipid peroxidation in transgenics support the improved physiological status of transgenic plants as compared to WT plants under salinity and drought stresses. The MdDREB76 overexpression upregulated the expression of stress-responsive genes that provide salinity and drought stress endurance to the plants. Compared to WT plants, transgenic lines exhibited healthy growth and higher yield under stress conditions. The present study reports MdDREB76 as a key regulator that switches on the battery of downstream genes which impart salt and osmotic stress endurance to the transgenic plants and can be used for genetic engineering of crop plants to combat salinity and drought stresses.
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Affiliation(s)
- Vishal Sharma
- Department of Biotechnology, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176 061, India
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Parul Goel
- Department of Biotechnology, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176 061, India
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Sanjay Kumar
- Department of Biotechnology, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176 061, India
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Anil Kumar Singh
- Department of Biotechnology, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176 061, India.
- Academy of Scientific and Innovative Research, New Delhi, India.
- ICAR-Indian Institute of Agricultural Biotechnology, Ranchi, 834 010, India.
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Shi J, Wang N, Zhou H, Xu Q, Yan G. The role of gibberellin synthase gene
GhGA2ox1
in upland cotton (
Gossypium hirsutum
L.) responses to drought and salt stress. Biotechnol Appl Biochem 2019; 66:298-308. [DOI: 10.1002/bab.1725] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 12/28/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Jian‐Bin Shi
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences Anyang People's Republic of China
| | - Ning Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences Anyang People's Republic of China
| | - Hong Zhou
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences Anyang People's Republic of China
| | - Qing‐Hua Xu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences Anyang People's Republic of China
| | - Gen‐Tu Yan
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences Anyang People's Republic of China
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Tang W, Luo C. Overexpression of Zinc Finger Transcription Factor ZAT6 Enhances Salt Tolerance. Open Life Sci 2018; 13:431-445. [PMID: 33817112 PMCID: PMC7874681 DOI: 10.1515/biol-2018-0052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 07/23/2018] [Indexed: 12/20/2022] Open
Abstract
The purpose of the present investigation is to examine the function of the C2H2-type zinc finger transcription factor of Arabidopsis thaliana 6 (ZAT6) in salt stress tolerance in cells of rice (Oryza sativa L.), cotton (Gossypium hirsutum L.) and slash pine (Pinus elliottii Engelm.). Cells of O. sativa, G. hirsutum, and P. elliottii overexpressing ZAT6 were generated using Agrobacterium-mediated genetic transformation. Molecular and functional analysis of transgenic cell lines demonstrate that overexpression of ZAT6 increased tolerance to salt stress by decreasing lipid peroxidation and increasing the content of abscisic acid (ABA) and GA8, as well as enhancing the activities of antioxidant enzymes such as ascorbate peroxidise (APOX), catalase (CAT), glutathione reductase (GR), and superoxide dismutase (SOD). In rice cells, ZAT6 also increased expression of Ca2+-dependent protein kinase genes OsCPK9 and OsCPK25 by 5–7 fold under NaCl stress. Altogether, our results suggest that overexpression of ZAT6 enhanced salt stress tolerance by increasing antioxidant enzyme activity, hormone content and expression of Ca2+-dependent protein kinase in transgenic cell lines of different plant species.
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Affiliation(s)
- Wei Tang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei 434025, China
| | - Caroline Luo
- Department of Microbiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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34
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Shi J, Wang J, Wang N, Zhou H, Xu Q, Yan G. Overexpression of StGA2ox1 Gene Increases the Tolerance to Abiotic Stress in Transgenic Potato (Solanum tuberosum L.) Plants. Appl Biochem Biotechnol 2018; 187:1204-1219. [DOI: 10.1007/s12010-018-2848-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 07/23/2018] [Indexed: 12/01/2022]
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35
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Muñiz García MN, Cortelezzi JI, Fumagalli M, Capiati DA. Expression of the Arabidopsis ABF4 gene in potato increases tuber yield, improves tuber quality and enhances salt and drought tolerance. PLANT MOLECULAR BIOLOGY 2018; 98:137-152. [PMID: 30143991 DOI: 10.1007/s11103-018-0769-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 08/21/2018] [Indexed: 05/23/2023]
Abstract
In this study we show that expression of the Arabidopsis ABF4 gene in potato increases tuber yield under normal and abiotic stress conditions, improves storage capability and processing quality of the tubers, and enhances salt and drought tolerance. Potato is the third most important food crop in the world. Potato plants are susceptible to salinity and drought, which negatively affect crop yield, tuber quality and market value. The development of new varieties with higher yields and increased tolerance to adverse environmental conditions is a main objective in potato breeding. In addition, tubers suffer from undesirable sprouting during storage that leads to major quality losses; therefore, the control of tuber sprouting is of considerable economic importance. ABF (ABRE-binding factor) proteins are bZIP transcription factors that regulate abscisic acid signaling during abiotic stress. ABF proteins also play an important role in the tuberization induction. We developed transgenic potato plants constitutively expressing the Arabidopsis ABF4 gene (35S::ABF4). In this study, we evaluated the performance of 35S::ABF4 plants grown in soil, determining different parameters related to tuber yield, tuber quality (carbohydrates content and sprouting behavior) and tolerance to salt and drought stress. Besides enhancing salt stress and drought tolerance, constitutive expression of ABF4 increases tuber yield under normal and stress conditions, enhances storage capability and improves the processing quality of the tubers.
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Affiliation(s)
- María Noelia Muñiz García
- Institute of Genetic Engineering and Molecular Biology "Dr. Héctor Torres" (INGEBI), National Scientific and Technical Research Council (CONICET), Vuelta de Obligado 2490, C1428ADN, Buenos Aires, Argentina
| | - Juan Ignacio Cortelezzi
- Institute of Genetic Engineering and Molecular Biology "Dr. Héctor Torres" (INGEBI), National Scientific and Technical Research Council (CONICET), Vuelta de Obligado 2490, C1428ADN, Buenos Aires, Argentina
| | - Marina Fumagalli
- Institute of Genetic Engineering and Molecular Biology "Dr. Héctor Torres" (INGEBI), National Scientific and Technical Research Council (CONICET), Vuelta de Obligado 2490, C1428ADN, Buenos Aires, Argentina
| | - Daniela A Capiati
- Institute of Genetic Engineering and Molecular Biology "Dr. Héctor Torres" (INGEBI), National Scientific and Technical Research Council (CONICET), Vuelta de Obligado 2490, C1428ADN, Buenos Aires, Argentina.
- Biochemistry Department, School of Exact and Natural Sciences, University of Buenos Aires, Buenos Aires, Argentina.
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36
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De Lepeleire J, Strobbe S, Verstraete J, Blancquaert D, Ambach L, Visser RGF, Stove C, Van Der Straeten D. Folate Biofortification of Potato by Tuber-Specific Expression of Four Folate Biosynthesis Genes. MOLECULAR PLANT 2018; 11:175-188. [PMID: 29277427 DOI: 10.1016/j.molp.2017.12.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 12/08/2017] [Accepted: 12/08/2017] [Indexed: 05/24/2023]
Abstract
Insufficient dietary intake of micronutrients, known as "hidden hunger", is a devastating global burden, affecting two billion people. Deficiency of folates (vitamin B9), which are known to play a central role in C1 metabolism, causes birth defects in at least a quarter million people annually. Biofortification to enhance the level of naturally occurring folates in crop plants, proves to be an efficient and cost-effective tool in fighting folate deficiency. Previously, introduction of folate biosynthesis genes GTPCHI and ADCS, proven to be a successful biofortification strategy in rice and tomato, turned out to be insufficient to adequately increase folate levels in potato tubers. Here, we provide a proof of concept that additional introduction of HPPK/DHPS and/or FPGS, downstream genes in mitochondrial folate biosynthesis, enables augmentation of folates to satisfactory levels (12-fold) and ensures folate stability upon long-term storage of tubers. In conclusion, this engineering strategy can serve as a model in the creation of folate-accumulating potato cultivars, readily applicable in potato-consuming populations suffering from folate deficiency.
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Affiliation(s)
- Jolien De Lepeleire
- Laboratory of Functional Plant Biology, Department of Biology, Ghent University, K.L. Ledeganckstraat 35, 9000 Ghent, Belgium
| | - Simon Strobbe
- Laboratory of Functional Plant Biology, Department of Biology, Ghent University, K.L. Ledeganckstraat 35, 9000 Ghent, Belgium
| | - Jana Verstraete
- Laboratory of Toxicology, Department of Bioanalysis, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Dieter Blancquaert
- Laboratory of Functional Plant Biology, Department of Biology, Ghent University, K.L. Ledeganckstraat 35, 9000 Ghent, Belgium
| | - Lars Ambach
- Laboratory of Toxicology, Department of Bioanalysis, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Richard G F Visser
- Plant Breeding, Wageningen University & Research, Droevendaalsesteeg 1, 6700 Wageningen, the Netherlands
| | - Christophe Stove
- Plant Breeding, Wageningen University & Research, Droevendaalsesteeg 1, 6700 Wageningen, the Netherlands
| | - Dominique Van Der Straeten
- Laboratory of Functional Plant Biology, Department of Biology, Ghent University, K.L. Ledeganckstraat 35, 9000 Ghent, Belgium.
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Li S, Zhao Q, Zhu D, Yu J. A DREB-Like Transcription Factor From Maize ( Zea mays), ZmDREB4.1, Plays a Negative Role in Plant Growth and Development. FRONTIERS IN PLANT SCIENCE 2018; 9:395. [PMID: 29670637 PMCID: PMC5893645 DOI: 10.3389/fpls.2018.00395] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 03/12/2018] [Indexed: 05/21/2023]
Abstract
The DREB (dehydration-responsive element binding)-type transcription factors are classified into six subgroups, named A-1 to A-6. The members of DREB A-1 and A-2 subgroups have been reported to be involved in response to various abiotic stresses. However, there were only a few genes belonging to A-3 to A-6 subgroups to be reported. In this study, we cloned a DREB A-4 subgroup gene from maize (Zea mays), ZmDREB4.1, and analyzed its characteristics and functions. ZmDREB4.1 was expressed in roots, stems, and leaves at very low levels. It was not induced by any biotic or abiotic treatment. ZmDREB4.1 was located in the nucleus, could directly bind to the DRE element and functioned as a transcriptional activator. The constitutive expression of ZmDREB4.1 in tobacco (Nicotiana tabacum L.) repressed leaf extension and hypocotyl, petiole and stem elongation. In maize, overexpression of ZmDREB4.1 repressed calli growth and regeneration. Further analysis showed that the smaller leaves of transgenic tobacco resulted from inhibition of cell division. The contents of cytokinin and auxin in transgenic leaves were severely decreased. The shorter hypocotyls, stems and petioles of transgenic tobacco were caused by inhibition of cell elongation. The transgenic hypocotyls, stems and petioles contained reduced gibberellin levels. Application of exogenous GA3 rescued the shorter hypocotyls, stems and petioles, but not the smaller leaves. These results demonstrated that ZmDREB4.1 plays an important role in the negative regulation of plant growth and development.
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38
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Kumar J, Singh S, Singh M, Srivastava PK, Mishra RK, Singh VP, Prasad SM. Transcriptional regulation of salinity stress in plants: A short review. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.plgene.2017.04.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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39
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Guleria P, Kumar V, Guleria S. Genetic Engineering: A Possible Strategy for Protein-Energy Malnutrition Regulation. Mol Biotechnol 2017; 59:499-517. [PMID: 28828714 DOI: 10.1007/s12033-017-0033-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Protein-energy malnutrition (PEM) has adversely affected the generations of developing countries. It is a syndrome that in severity causes death. PEM generally affects infants of 1-5 age group. This manifestation is maintained till adulthood in the form of poor brain and body development. The developing nations are continuously making an effort to curb PEM. However, it is still a prime concern as it was in its early years of occurrence. Transgenic crops with high protein and enhanced nutrient content have been successfully developed. Present article reviews the studies documenting genetic engineering-mediated improvement in the pulses, cereals, legumes, fruits and other crop plants in terms of nutritional value, stress tolerance, longevity and productivity. Such genetically engineered crops can be used as a possible remedial tool to eradicate PEM.
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Affiliation(s)
- Praveen Guleria
- Department of Biotechnology, DAV University, Jalandhar, Punjab, 144012, India.
| | - Vineet Kumar
- Department of Biotechnology, DAV University, Jalandhar, Punjab, 144012, India.,Department of Biotechnology, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Shiwani Guleria
- Department of Microbiology, Lovely Professional University, Phagwara, Punjab, 144411, India
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40
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Sharma S, Gupta R, Deswal R. Dioscorea alata tuber proteome analysis shows over thirty dioscorin isoforms and novel tuber proteins. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 114:128-137. [PMID: 28292708 DOI: 10.1016/j.plaphy.2017.03.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 02/25/2017] [Accepted: 03/01/2017] [Indexed: 06/06/2023]
Abstract
In Dioscorea, dioscorin (31 kDa) is the major storage protein constituting 85% of the total tuber proteins. An integrated proteomic and biochemical approach was used to understand the physiological role of dioscorin in the two contrasting growth stages (germinating and mature tuber). HPLC analysis showed 3 fold reduction in mannitol and 12.88 and 1.24 fold increase in sucrose and maltose in the germinating tuber. A 1.8 and 3 fold increase in sucrose phosphate synthase and mannitol dehydrogenase activity respectively was observed in the germinating tuber while a 2 fold higher invertase probably lowers the sucrose accumulation in the mature tuber. SDS-PAGE and 2-D maps of the mature and germinating tubers confirmed depletion (more than 50%) of dioscorin on germination. Dioscorin was purified using ion exchange and gel filtration chromatography with 43.32 fold purification and 38.16 yield. Out of a trail of 35 spots at 31 kDa only 12 spots (identified as dioscorin isoforms) were present in the 2D gel of the purified fraction. To search for other tuber proteins besides dioscorin, the unbound fractions of DEAE column were analysed by 2DGE. DREB 1A, caffeic acid 3-O-methyltransferase and Rab-1 small GTP binding protein were identified perhaps for the first time in the Dioscorea proteome. The interactome analysis revealed these to be involved in oxidative stress, carotenoid synthesis and vesicular transport. This is perhaps the first attempt to identify tuber proteome (although limited) and to understand the physiological significance of these proteins.
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Affiliation(s)
- Shruti Sharma
- Molecular Physiology and Proteomics Laboratory, Department of Botany, University of Delhi, India
| | - Ravi Gupta
- Department of Plant Bioscience, Pusan National University, Miryang, South Korea
| | - Renu Deswal
- Molecular Physiology and Proteomics Laboratory, Department of Botany, University of Delhi, India.
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41
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Pruthvi V, Rama N, Parvathi MS, Nataraja KN. Transgenic tobacco plants constitutively expressing peanut BTF3 exhibit increased growth and tolerance to abiotic stresses. PLANT BIOLOGY (STUTTGART, GERMANY) 2017; 19:377-385. [PMID: 27981726 DOI: 10.1111/plb.12533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 12/11/2016] [Indexed: 06/06/2023]
Abstract
Abiotic stresses limit crop growth and productivity worldwide. Cellular tolerance, an important abiotic stress adaptive trait, involves coordinated activities of multiple proteins linked to signalling cascades, transcriptional regulation and other diverse processes. Basal transcriptional machinery is considered to be critical for maintaining transcription under stressful conditions. From this context, discovery of novel basal transcription regulators from stress adapted crops like peanut would be useful for improving tolerance of sensitive plant types. In this study, we prospected a basal transcription factor, BTF3 from peanut (Arachis hypogaea L) and studied its relevance in stress acclimation by over expression in tobacco. AhBTF3 was induced under PEG-, NaCl-, and methyl viologen-induced stresses in peanut. The constitutive expression of AhBTF3 in tobacco increased plant growth under non stress condition. The transgenic plants exhibited superior phenotype compared to wild type under mannitol- and NaCl-induced stresses at seedling level. The enhanced cellular tolerance of transgenic plants was evidenced by higher cell membrane stability, reactive oxygen species (ROS) scavenging activity, seedling survival and vigour than wild type. The transgenic lines showed better in vitro regeneration capacity on growth media supplemented with NaCl than wild type. Superior phenotype of transgenic plants under osmotic and salinity stresses seems to be due to constitutive activation of genes of multiple pathways linked to growth and stress adaptation. The study demonstrated that AhBTF3 is a positive regulator of growth and stress acclimation and hence can be considered as a potential candidate gene for crop improvement towards stress adaptation.
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Affiliation(s)
- V Pruthvi
- Department of Crop Physiology, University of Agricultural Sciences, Bengaluru, Karnataka, India
| | - N Rama
- Department of Crop Physiology, University of Agricultural Sciences, Bengaluru, Karnataka, India
| | - M S Parvathi
- Department of Crop Physiology, University of Agricultural Sciences, Bengaluru, Karnataka, India
| | - K N Nataraja
- Department of Crop Physiology, University of Agricultural Sciences, Bengaluru, Karnataka, India
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42
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Yang G, Yu L, Zhang K, Zhao Y, Guo Y, Gao C. A ThDREB gene from Tamarix hispida improved the salt and drought tolerance of transgenic tobacco and T. hispida. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 113:187-197. [PMID: 28222350 DOI: 10.1016/j.plaphy.2017.02.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 01/19/2017] [Accepted: 02/07/2017] [Indexed: 05/04/2023]
Abstract
Dehydration-responsive element-binding (DREB) transcription factors are important abiotic stress tolerance related genes, and some reports on the roles of DREB have primarily addressed herbal plants. To explore the abiotic stress tolerance role of DREB (ThDREB) from Tamarix hispida, a ThDREB gene with a complete ORF of 783 bp that encodes a 28.74 kDa protein with 260 amino acids, was isolated and functionally annotated. ThDREB expression was highly induced by NaCl, PEG, NaHCO3 and CdCl2 treatments, and the highest expression level (369.2-fold of control) was found for the roots that were under NaCl stress for 6 h. The tobacco plants that were transformed by ThDREB were conferred with higher germination rates, fresh weights and root lengths than the wild type (WT) tobacco plants under NaCl and mannitol treatments. The total chlorophyll content (tcc), superoxide dismutase (SOD) and peroxidase (POD) activities were also higher in the transgenic lines in comparison with the WT, and the malondialdehyde (MDA) and H2O2 content, electrolyte leakage (EL) rate and ROS as tracked by staining were generated to a lesser degree in ThDREB transgenic plants than in the WT under NaCl and mannitol stress. Furthermore, the transient overexpression analysis of ThDREB in T. hispida also improved plant salt and drought tolerance in comparison with the empty vector-transformed lines. Our results indicated that ThDREB expression could effectively improve tolerance to salt and drought stress by enhancing the antioxidase activity that keeps the ROS at a low accumulation level and makes them easy to scavenge.
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Affiliation(s)
- Guiyan Yang
- Laboratory of Walnut Research Center, College of Forestry, Northwest A & F University, Yangling 712100, Shaanxi, China; State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China
| | - Lili Yu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China
| | - Kaimin Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China
| | - Yulin Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China
| | - Yucong Guo
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China
| | - Caiqiu Gao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, China.
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Li H, Wang Y, Wu M, Li L, Li C, Han Z, Yuan J, Chen C, Song W, Wang C. Genome-Wide Identification of AP2/ERF Transcription Factors in Cauliflower and Expression Profiling of the ERF Family under Salt and Drought Stresses. FRONTIERS IN PLANT SCIENCE 2017; 8:946. [PMID: 28642765 PMCID: PMC5462956 DOI: 10.3389/fpls.2017.00946] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 05/22/2017] [Indexed: 05/18/2023]
Abstract
The AP2/ERF transcription factors (TFs) comprise one of the largest gene superfamilies in plants. These TFs perform vital roles in plant growth, development, and responses to biotic and abiotic stresses. In this study, 171 AP2/ERF TFs were identified in cauliflower (Brassica oleracea L. var. botrytis), one of the most important horticultural crops in Brassica. Among these TFs, 15, 9, and 1 TFs were classified into the AP2, RAV, and Soloist family, respectively. The other 146 TFs belong to ERF family, which were further divided into the ERF and DREB subfamilies. The ERF subfamily contained 91 TFs, while the DREB subfamily contained 55 TFs. Phylogenetic analysis results indicated that the AP2/ERF TFs can be classified into 13 groups, in which 25 conserved motifs were confirmed. Some motifs were group- or subgroup- specific, implying that they are significant to the functions of the AP2/ERF TFs of these clades. In addition, 35 AP2/ERF TFs from the 13 groups were selected randomly and then used for expression pattern analysis under salt and drought stresses. The majority of these AP2/ERF TFs exhibited positive responses to these stress conditions. In specific, Bra-botrytis-ERF054a, Bra-botrytis-ERF056, and Bra-botrytis-CRF2a demonstrated rapid responses. By contrast, six AP2/ERF TFs were showed to delay responses to both stresses. The AP2/ERF TFs exhibiting specific expression patterns under salt or drought stresses were also confirmed. Further functional analysis indicated that ectopic overexpression of Bra-botrytis-ERF056 could increase tolerance to both salt and drought treatments. These findings provide new insights into the AP2/ERF TFs present in cauliflower, and offer candidate AP2/ERF TFs for further studies on their roles in salt and drought stress tolerance.
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Affiliation(s)
- Hui Li
- College of Life Sciences, Nankai UniversityTianjin, China
- College of Horticulture and Landscape, Tianjin Agricultural UniversityTianjin, China
| | - Yu Wang
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Mei Wu
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Lihong Li
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Cong Li
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Zhanpin Han
- College of Horticulture and Landscape, Tianjin Agricultural UniversityTianjin, China
| | - Jiye Yuan
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Chengbin Chen
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Wenqin Song
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Chunguo Wang
- College of Life Sciences, Nankai UniversityTianjin, China
- *Correspondence: Chunguo Wang
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Zong JM, Li XW, Zhou YH, Wang FW, Wang N, Dong YY, Yuan YX, Chen H, Liu XM, Yao N, Li HY. The AaDREB1 Transcription Factor from the Cold-Tolerant Plant Adonis amurensis Enhances Abiotic Stress Tolerance in Transgenic Plant. Int J Mol Sci 2016; 17:ijms17040611. [PMID: 27110776 PMCID: PMC4849061 DOI: 10.3390/ijms17040611] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 04/15/2016] [Accepted: 04/18/2016] [Indexed: 11/28/2022] Open
Abstract
Dehydration-responsive element binding (DREB) transcription factors (TFs) play important roles in the regulation of plant resistance to environmental stresses and can specifically bind to dehydration-responsive element/C-repeat element (DRE/CRT) proteins (G/ACCGAC) and activate expression of many stress-inducible genes. Here, we cloned and characterized a novel gene (AaDREB1) encoding the DREB1 transcription factor from the cold-tolerant plant Adonis amurensis. Quantitative real-time (qRT)-PCR results indicated that AaDREB1 expression was induced by salt, drought, cold stress, and abscisic acid application. A yeast one-hybrid assay demonstrated that AaDREB1 encodes a transcription activator and specifically binds to DRE/CRT. Furthermore, transgenic Arabidopsis and rice harboring AaDREB1 showed enhanced tolerance to salt, drought, and low temperature. These results indicated that AaDREB1 might be useful in genetic engineering to improve plant stress tolerance.
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MESH Headings
- Abscisic Acid/pharmacology
- Adonis/genetics
- Adonis/metabolism
- Amino Acid Sequence
- Arabidopsis/genetics
- Arabidopsis/growth & development
- Arabidopsis/metabolism
- Cold Temperature
- DNA, Plant/chemistry
- DNA, Plant/isolation & purification
- DNA, Plant/metabolism
- Droughts
- Molecular Sequence Data
- Oryza/genetics
- Oryza/growth & development
- Oryza/metabolism
- Phylogeny
- Plant Proteins/chemistry
- Plant Proteins/genetics
- Plant Proteins/metabolism
- Plants, Genetically Modified/classification
- Plants, Genetically Modified/genetics
- Plants, Genetically Modified/growth & development
- Plants, Genetically Modified/physiology
- Plasmids/genetics
- Plasmids/metabolism
- Salts/pharmacology
- Sequence Alignment
- Sequence Analysis, DNA
- Stress, Physiological/drug effects
- Stress, Physiological/genetics
- Transcription Factors/chemistry
- Transcription Factors/genetics
- Transcription Factors/metabolism
- Two-Hybrid System Techniques
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Affiliation(s)
- Jun-Mei Zong
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Xiao-Wei Li
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Yuan-Hang Zhou
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Fa-Wei Wang
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Nan Wang
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Yuan-Yuan Dong
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Yan-Xi Yuan
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Huan Chen
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Xiu-Ming Liu
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Na Yao
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
| | - Hai-Yan Li
- College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun 130118, Jilin, China.
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45
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Chen N, Su M, Chi X, Zhang Z, Pan L, Chen M, Wang T, Wang M, Yang Z, Yu S. Transcriptome analysis reveals salt-stress-regulated biological processes and key pathways in roots of peanut (Arachis hypogaea L.). Genes Genomics 2016. [DOI: 10.1007/s13258-016-0395-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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46
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Wang H, Wang H, Shao H, Tang X. Recent Advances in Utilizing Transcription Factors to Improve Plant Abiotic Stress Tolerance by Transgenic Technology. FRONTIERS IN PLANT SCIENCE 2016; 7:67. [PMID: 26904044 PMCID: PMC4746321 DOI: 10.3389/fpls.2016.00067] [Citation(s) in RCA: 182] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 01/14/2016] [Indexed: 05/18/2023]
Abstract
Agricultural production and quality are adversely affected by various abiotic stresses worldwide and this will be exacerbated by the deterioration of global climate. To feed a growing world population, it is very urgent to breed stress-tolerant crops with higher yields and improved qualities against multiple environmental stresses. Since conventional breeding approaches had marginal success due to the complexity of stress tolerance traits, the transgenic approach is now being popularly used to breed stress-tolerant crops. So identifying and characterizing the critical genes involved in plant stress responses is an essential prerequisite for engineering stress-tolerant crops. Far beyond the manipulation of single functional gene, engineering certain regulatory genes has emerged as an effective strategy now for controlling the expression of many stress-responsive genes. Transcription factors (TFs) are good candidates for genetic engineering to breed stress-tolerant crop because of their role as master regulators of many stress-responsive genes. Many TFs belonging to families AP2/EREBP, MYB, WRKY, NAC, bZIP have been found to be involved in various abiotic stresses and some TF genes have also been engineered to improve stress tolerance in model and crop plants. In this review, we take five large families of TFs as examples and review the recent progress of TFs involved in plant abiotic stress responses and their potential utilization to improve multiple stress tolerance of crops in the field conditions.
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Affiliation(s)
- Hongyan Wang
- Institute of Technology, Yantai Academy of China Agriculture UniversityYantai, China
| | - Honglei Wang
- Institute of Technology, Yantai Academy of China Agriculture UniversityYantai, China
| | - Hongbo Shao
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Provincial Key Laboratory of Agrobiology, Institute of Biotechnology, Jiangsu Academy of Agricultural SciencesNanjing, China
- Key Laboratory of Coastal Biology and Bioresources Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of SciencesYantai, China
| | - Xiaoli Tang
- Key Laboratory of Coastal Biology and Bioresources Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of SciencesYantai, China
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47
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Zhang J, Yu G, Wen W, Ma X, Xu B, Huang B. Functional characterization and hormonal regulation of the PHEOPHYTINASE gene LpPPH controlling leaf senescence in perennial ryegrass. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:935-45. [PMID: 26643195 PMCID: PMC4737083 DOI: 10.1093/jxb/erv509] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Chlorophyll (Chl) degradation occurs naturally during leaf maturation and senescence, and can be induced by stresses, both processes involving the regulation of plant hormones. The objective of this study was to determine the functional roles and hormonal regulation of a gene encoding pheophytin pheophorbide hydrolyase (PPH) that catabolizes Chl degradation during leaf senescence in perennial grass species. A PPH gene, LpPPH, was cloned from perennial ryegrass (Lolium perenne L.). LpPPH was localized in the chloroplast. Overexpressing LpPPH accelerated Chl degradation in wild tobacco, and rescued the stay-green phenotype of the Arabidopsis pph null mutant. The expression level of LpPPH was positively related to the extent of leaf senescence. Exogenous application of abscisic acid (ABA) and ethephon (an ethylene-releasing agent) accelerated the decline in Chl content in leaves of perennial ryegrass, whereas cytokinin (CK) and aminoethoxyvinylglycine (AVG; an ethylene biosynthesis inhibitor) treatments suppressed leaf senescence, corresponding to the up- or down-regulation of LpPPH expression. The promoters of five orthologous PPH genes were predicted to share conserved cis-elements potentially recognized by transcription factors in the ABA and CK pathways. Taken together, the results suggested that LpPPH-mediated Chl breakdown could be regulated positively by ABA and ethylene, and negatively by CK, and LpPPH could be a direct downstream target gene of transcription factors in the ABA and CK signaling pathways.
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Affiliation(s)
- Jing Zhang
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095, PR China Department of Plant Biology and Pathology, Rutgers, the State University of New Jersey, New Brunswick, NJ 08901, USA
| | - Guohui Yu
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Wuwu Wen
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Xiqing Ma
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095, PR China Department of Plant Biology and Pathology, Rutgers, the State University of New Jersey, New Brunswick, NJ 08901, USA
| | - Bin Xu
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Bingru Huang
- Department of Plant Biology and Pathology, Rutgers, the State University of New Jersey, New Brunswick, NJ 08901, USA
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Liu XQ, Liu CY, Guo Q, Zhang M, Cao BN, Xiang ZH, Zhao AC. Mulberry Transcription Factor MnDREB4A Confers Tolerance to Multiple Abiotic Stresses in Transgenic Tobacco. PLoS One 2015; 10:e0145619. [PMID: 26695076 PMCID: PMC4687919 DOI: 10.1371/journal.pone.0145619] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 12/07/2015] [Indexed: 12/13/2022] Open
Abstract
The dehydration responsive element binding (DREB) transcription factors have been reported to be involved in stress responses. Most studies have focused on DREB genes in subgroups A-1 and A-2 in herbaceous plants, but there have been few reports on the functions of DREBs from the A-3-A-6 subgroups and in woody plants. Moreover, mulberry trees are ecologically and economically important perennial woody plants, but there has been little research on its stress physiology, biochemistry and molecular biology. In this study, a DREB gene from the mulberry tree, designated as MnDREB4A, classified into the A-4 subgroup by our previous study, was selected for further characterization. Our results showed that the MnDREB4A protein was localized to the nucleus where it activated transcription. The promoter of MnDREB4A can direct prominent expression downstream of the β-glucuronidase (GUS) gene under heat, cold, drought and salt stress, and GUS staining was deepest after 12 h of stress treatment. The MnDREB4A-overexpression transgenic tobacco showed the improved growth phenotype under untreated conditions, such as greener leaves, longer roots, and lower water loss and senescence rates. Overexpression of MnDREB4A in tobacco can significantly enhance tolerance to heat, cold, drought, and salt stresses in transgenic plants. The leaf discs and seedlings of transgenic plants reduced leaf wilting and senescence rates compared to the wild type plants under the different stress conditions. Further investigation showed that transgenic plants also had higher water contents and proline contents, and lower malondialdehyde contents under untreated condition and stress conditions. Our results indicate that the MnDREB4A protein plays an important role in plant stress tolerance.
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Affiliation(s)
- Xue-Qin Liu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry, Southwest University, Chongqing, 400716, China
| | - Chang-Ying Liu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry, Southwest University, Chongqing, 400716, China
| | - Qing Guo
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry, Southwest University, Chongqing, 400716, China
| | - Meng Zhang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry, Southwest University, Chongqing, 400716, China
| | - Bo-Ning Cao
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry, Southwest University, Chongqing, 400716, China
| | - Zhong-Huai Xiang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry, Southwest University, Chongqing, 400716, China
| | - Ai-Chun Zhao
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry, Southwest University, Chongqing, 400716, China
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49
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Genome-wide analysis and expression profiling of the ERF transcription factor family in potato (Solanum tuberosum L.). Mol Biotechnol 2015; 57:348-58. [PMID: 25491236 DOI: 10.1007/s12033-014-9828-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The ERF transcription factors belong to the AP2/ERF superfamily, one of the largest transcription factor families in plants. They play important roles in plant development processes, as well as in the response to biotic, abiotic, and hormone signaling. In the present study, 155 putative ERF transcription factor genes were identified from the potato (Solanum tuberosum) genome database, and compared with those from Arabidopsis thaliana. The StERF proteins are divided into ten phylogenetic groups. Expression analyses of five StERFs were carried out by semi-quantitative RT-PCR and compared with published RNA-seq data. These latter analyses were used to distinguish tissue-specific, biotic, and abiotic stress genes as well as hormone-responsive StERF genes. The results are of interest to better understand the role of the AP2/ERF genes in response to diverse types of stress in potatoes. A comprehensive analysis of the physiological functions and biological roles of the ERF family genes in S. tuberosum is required to understand crop stress tolerance mechanisms.
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50
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The SsDREB Transcription Factor from the Succulent Halophyte Suaeda salsa Enhances Abiotic Stress Tolerance in Transgenic Tobacco. Int J Genomics 2015; 2015:875497. [PMID: 26504772 PMCID: PMC4609462 DOI: 10.1155/2015/875497] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Accepted: 06/07/2015] [Indexed: 11/17/2022] Open
Abstract
Dehydration-responsive element-binding (DREB) transcription factor (TF) plays a key role for abiotic stress tolerance in plants. In this study, a novel cDNA encoding DREB transcription factor, designated SsDREB, was isolated from succulent halophyte Suaeda salsa. This protein was classified in the A-6 group of DREB subfamily based on multiple sequence alignments and phylogenetic characterization. Yeast one-hybrid assays showed that SsDREB protein specifically binds to the DRE sequence and could activate the expression of reporter genes in yeast, suggesting that the SsDREB protein was a CBF/DREB transcription factor. Real-time RT-PCR showed that SsDREB was significantly induced under salinity and drought stress. Overexpression of SsDREB cDNA in transgenic tobacco plants exhibited an improved salt and drought stress tolerance in comparison to the nontransformed controls. The transgenic plants revealed better growth, higher chlorophyll content, and net photosynthesis rate, as well as higher level of proline and soluble sugars. The semiquantitative PCR of transgenics showed higher expression of stress-responsive genes. These data suggest that the SsDREB transcription factor is involved in the regulation of salt stress tolerance in tobacco by the activation of different downstream gene expression.
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