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Ghorbani R, Alemzadeh A, Razi H. Microarray analysis of transcriptional responses to salt and drought stress in Arabidopsis thaliana. Heliyon 2019; 5:e02614. [PMID: 31844689 PMCID: PMC6895597 DOI: 10.1016/j.heliyon.2019.e02614] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/24/2019] [Accepted: 10/04/2019] [Indexed: 12/02/2022] Open
Abstract
Microarray expression profile analysis is a useful approach to increase our knowledge about genes involved in regulatory networks and signal transduction pathways related to abiotic stress tolerance. Salt and drought, as two important abiotic stresses, adversely affect plant productivity in the world every year. To understand stress response mechanisms and identify genes and proteins which play critical roles in these mechanisms, the study of individual genes and proteins cannot be considered as an effective approach. On the other hand, the availability of new global data provides us an effective way to shed some light on the central role of molecules involved in stress response mechanisms in the plant. A meta-analysis of salt and drought stress responses was carried out using 38 samples of different experiments from leaves and roots of Arabidopsis plants exposed to drought and salt stresses. We figured out the number of differentially expressed genes (DEGs) was higher in roots under both stresses. Also, we found that the number of common DEGs under both stresses was more in roots and also the number of common DEGs in both tissues under salt stress was more than drought stress. The highest percent of DEGs was related to cell and cell part (about 87%). Around 9% and 7% of DEGs in roots and leaves encoded transcription factors, respectively. Network analysis revealed that three transcription factor families HSF, AP2/ERF and C2H2, may have critical roles in salt and drought stress response mechanisms in Arabidopsis and some proteins like STZ may be introduced as a new candidate gene for enhancing salt and drought tolerance in crop plants.
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Affiliation(s)
| | - Abbas Alemzadeh
- Department of Crop Production and Plant Breeding, School of Agriculture, Shiraz University, Shiraz, Iran
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He F, Li H, Wang J, Su Y, Wang H, Feng C, Yang Y, Niu M, Liu C, Yin W, Xia X. PeSTZ1, a C2H2-type zinc finger transcription factor from Populus euphratica, enhances freezing tolerance through modulation of ROS scavenging by directly regulating PeAPX2. PLANT BIOTECHNOLOGY JOURNAL 2019; 17:2169-2183. [PMID: 30977939 PMCID: PMC6790368 DOI: 10.1111/pbi.13130] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/07/2019] [Accepted: 04/09/2019] [Indexed: 05/04/2023]
Abstract
In the present study, PeSTZ1, a cysteine-2/histidine-2-type zinc finger transcription factor, was isolated from the desert poplar, Populus euphratica, which serves as a model stress adaptation system for trees. PeSTZ1 was preferentially expressed in the young stems and was significantly up-regulated during chilling and freezing treatments. PeSTZ1 was localized to the nucleus and bound specifically to the PeAPX2 promoter. To examine the potential functions of PeSTZ1, we overexpressed it in poplar 84K hybrids (Populus alba × Populus glandulosa), which are known to be stress-sensitive. Upon exposure to freezing stress, transgenic poplars maintained higher photosynthetic activity and dissipated more excess light energy (in the form of heat) than wild-type poplars. Thus, PeSTZ1 functions as a transcription activator to enhance freezing tolerance without sacrificing growth. Under freezing stress, PeSTZ1 acts upstream of ASCORBATE PEROXIDASE2 (PeAPX2) and directly regulates its expression by binding to its promoter. Activated PeAPX2 promotes cytosolic APX that scavenges reactive oxygen species (ROS) under cold stress. PeSTZ1 may operate in parallel with C-REPEAT-BINDING FACTORS to regulate COLD-REGULATED gene expression. Moreover, PeSTZ1 up-regulation reduces malondialdehyde and ROS accumulation by activating the antioxidant system. Taken together, these results suggested that overexpressing PeSTZ1 in 84K poplar enhances freezing tolerance through the modulation of ROS scavenging via the direct regulation of PeAPX2 expression.
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Affiliation(s)
- Fang He
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Hui‐Guang Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Jing‐Jing Wang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Yanyan Su
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Hou‐Ling Wang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Cong‐Hua Feng
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Yanli Yang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Meng‐Xue Niu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Chao Liu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Weilun Yin
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Xinli Xia
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignNational Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
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103
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Li Z, Liu C, Zhang Y, Wang B, Ran Q, Zhang J. The bHLH family member ZmPTF1 regulates drought tolerance in maize by promoting root development and abscisic acid synthesis. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:5471-5486. [PMID: 31267122 PMCID: PMC6793450 DOI: 10.1093/jxb/erz307] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 06/13/2019] [Indexed: 05/21/2023]
Abstract
Drought stress is the most important environmental stress limiting maize production. ZmPTF1, a phosphate starvation-induced basic helix-loop-helix (bHLH) transcription factor, contributes to root development and low-phosphate tolerance in maize. Here, ZmPTF1 expression, drought tolerance, and the underlying mechanisms were studied by using maize ZmPTF1 overexpression lines and mutants. ZmPTF1 was found to be a positive regulator of root development, ABA synthesis, signalling pathways, and drought tolerance. ZmPTF1 was also found to bind to the G-box element within the promoter of 9-cis-epoxycarotenoid dioxygenase (NCED), C-repeat-binding factor (CBF4), ATAF2/NAC081, NAC30, and other transcription factors, and to act as a positive regulator of the expression of those genes. The dramatically upregulated NCEDs led to increased abscisic acid (ABA) synthesis and activation of the ABA signalling pathway. The up-regulated transcription factors hierarchically regulate the expression of genes involved in root development, stress responses, and modifications of transcriptional regulation. The improved root system, increased ABA content, and activated ABA-, CBF4-, ATAF2-, and NAC30-mediated stress responses increased the drought tolerance of the ZmPTF1 overexpression lines, while the mutants showed opposite trends. This study describes a useful gene for transgenic breeding and helps us understand the role of a bHLH protein in plant root development and stress responses.
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Affiliation(s)
- Zhaoxia Li
- School of Life Sciences, Shandong University, Jinan, Shandong, China
| | - Can Liu
- School of Life Sciences, Shandong University, Jinan, Shandong, China
| | - Ying Zhang
- School of Life Sciences, Shandong University, Jinan, Shandong, China
| | - Baomei Wang
- School of Life Sciences, Shandong University, Jinan, Shandong, China
| | - Qijun Ran
- School of Life Sciences, Shandong University, Jinan, Shandong, China
| | - Juren Zhang
- School of Life Sciences, Shandong University, Jinan, Shandong, China
- Correspondence:
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104
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Wang X, Niu X, Chen Y, Sun Z, Han A, Lou X, Ge J, Li X, Yang Y, Jian J, Gonçalves RJ, Guan W. Transcriptome sequencing of a toxic dinoflagellate, Karenia mikimotoi subjected to stress from solar ultraviolet radiation. HARMFUL ALGAE 2019; 88:101640. [PMID: 31582153 DOI: 10.1016/j.hal.2019.101640] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 07/08/2019] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
Solar ultraviolet radiation (UVR) is a stress factor in aquatic environments and may act directly or indirectly on orgnisms in the upper layers of the water column. However, UVR effects are usually species-specific and difficult to extrapolate. Here we use the HAB-forming, toxic dinoflagellate Karenia mikimotoi (which was found to be relatively resistant in previous studies) to investigate its transcriptional responses to a one-week UVR exposure. For this, batch cultures of K. mikimotoi were grown with and without UVR, and their transcriptomes (generated via RNAseq technology) were compared. RNA-seq generated 45.31 million reads, which were further assembled to 202600 unigenes (>300bp). Among these, ca. 61% were annotated with NCBI, NR, GO, KOG, PFAM, Swiss-Prot, and KEGG database. Transcriptomic analysis revealed 722 differentially expressed unigenes (DEGs, defined as being within a |log2 fold change| ≥ 2 and padj < 0.05) responding to solar UVR, which were only 0.36% of all unigenes. 716 unigenes were down-regulated, and only 6 unigenes were up-regulated in the UVR compared to non-UVR treatment. KEGG pathway further analysis revealed DEGs were involved in the different pathway; genes involved in the ribosome, endocytosis and steroid biosynthesis pathways were highly down-regulated, but this was not the case for those involved in the energy metabolisms (including photosynthesis, oxidative phosphorylation) which may contribute to the sustainable growth observed in UVR treatment. The up-regulated expression of both zinc-finger proteins (ZFPs) and ribosomal protein L11 (RPL11) may be one of the acclimated mechanisms against UVR. In addition, this work identified down-regulated genes involved in fatty acid degradation and the hydrophobic branched chain amino acids (e.g., Valine, leucine, and isoleucine), which act as structural components of cell membranes modulating lipid homeostasis or turnover. In conclusion, the present study suggests that the toxic dinoflagellate K. mikimotoi has limited transcriptomic regulation but confirms that it appears as a tolerant species in response to solar UVR. These findings expand current knowledge of gene expression in HAB-forming species in response to natural environment factors such as solar radiation.
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Affiliation(s)
- Xinjie Wang
- Department of Marine Biotechnology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035 China; Marine Biology Institute, Shantou University, Shantou, Guangdong 515063 China
| | - Xiaoqin Niu
- Department of Marine Biotechnology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035 China
| | - Yiji Chen
- Department of Marine Biotechnology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035 China
| | - Zhewei Sun
- Department of Marine Biotechnology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035 China
| | - Axiang Han
- Department of Marine Biotechnology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035 China
| | - Xiayuan Lou
- Department of Marine Biotechnology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035 China
| | - Jingke Ge
- Department of Marine Biotechnology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035 China
| | - Xuanwen Li
- Department of Marine Biotechnology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035 China
| | - Yuqian Yang
- Department of Marine Biotechnology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035 China
| | - Jianbo Jian
- Marine Biology Institute, Shantou University, Shantou, Guangdong 515063 China
| | - Rodrigo J Gonçalves
- Laboratorio de Oceanografía Biológica (LOBio), Centro para el Estudio de Sistemas Marinos (CESIMAR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). U9120ACD, Puerto Madryn, Argentina
| | - Wanchun Guan
- Department of Marine Biotechnology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035 China.
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105
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The Roles of Arabidopsis C1-2i Subclass of C2H2-type Zinc-Finger Transcription Factors. Genes (Basel) 2019; 10:genes10090653. [PMID: 31466344 PMCID: PMC6770587 DOI: 10.3390/genes10090653] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/19/2019] [Accepted: 08/27/2019] [Indexed: 01/07/2023] Open
Abstract
The Cys2His2 (C2H2)-type zinc-finger protein (ZFP) family, which includes 176 members in Arabidopsis thaliana, is one of the largest families of putative transcription factors in plants. Of the Arabidopsis ZFP members, only 33 members are conserved in other eukaryotes, with 143 considered to be plant specific. C2H2-type ZFPs have been extensively studied and have been shown to play important roles in plant development and environmental stress responses by transcriptional regulation. The ethylene-responsive element binding-factor-associated amphiphilic repression (EAR) domain (GCC box) has been found to have a critical role in the tolerance response to abiotic stress. Many of the plant ZFPs containing the EAR domain, such as AZF1/2/3, ZAT7, ZAT10, and ZAT12, have been shown to function as transcriptional repressors. In this review, we mainly focus on the C1-2i subclass of C2H2 ZFPs and summarize the latest research into their roles in various stress responses. The role of C2H2-type ZFPs in response to the abiotic and biotic stress signaling network is not well explained, and amongst them, C1-2i is one of the better-characterized classifications in response to environmental stresses. These studies of the C1-2i subclass ought to furnish the basis for future studies to discover the pathways and receptors concerned in stress defense. Research has implied possible protein-protein interactions between members of C1-2i under various stresses, for which we have proposed a hypothetical model.
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106
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Han G, Yuan F, Guo J, Zhang Y, Sui N, Wang B. AtSIZ1 improves salt tolerance by maintaining ionic homeostasis and osmotic balance in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 285:55-67. [PMID: 31203894 DOI: 10.1016/j.plantsci.2019.05.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 04/30/2019] [Accepted: 05/02/2019] [Indexed: 05/20/2023]
Abstract
C2H2-type zinc finger proteins play important roles in plant growth, development, and abiotic stress tolerance. Here, we explored the role of the C2H2-type zinc finger protein SALT INDUCED ZINC FINGER PROTEIN1 (AtSIZ1; At3G25910) in Arabidopsis thaliana under salt stress. AtSIZ1 expression was induced by salt treatment. During the germination stage, the germination rate, germination energy, germination index, cotyledon growth rate, and root length were significantly higher in AtSIZ1 overexpression lines than in the wild type under various stress treatments, whereas these indices were significantly reduced in AtSIZ1 loss-of-function mutants. At the mature seedling stage, the overexpression lines maintained higher levels of K+, proline, and soluble sugar, lower levels of Na+ and MDA, and lower Na+/K+ ratios than the wild type. Stress-related marker genes such as SOS1, AtP5CS1, AtGSTU5, COR15A, RD29A, and RD29B were expressed at higher levels in the overexpression lines than the wild type and loss-of-function mutants under salt treatment. These results indicate that AtSIZ1 improves salt tolerance in Arabidopsis by helping plants maintain ionic homeostasis and osmotic balance.
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Affiliation(s)
- Guoliang Han
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China
| | - Fang Yuan
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China
| | - Jianrong Guo
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China
| | - Yi Zhang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China
| | - Na Sui
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China
| | - Baoshan Wang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji'nan, Shandong, 250014, China.
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107
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Niu SH, Liu SW, Ma JJ, Han FX, Li Y, Li W. The transcriptional activity of a temperature-sensitive transcription factor module is associated with pollen shedding time in pine. TREE PHYSIOLOGY 2019; 39:1173-1186. [PMID: 31073594 DOI: 10.1093/treephys/tpz023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 02/07/2019] [Accepted: 02/18/2019] [Indexed: 06/09/2023]
Abstract
It has long been known that the pollen shedding time in pine trees is correlated with temperature, but the molecular basis for this has remained largely unknown. To better understand the mechanisms driving temperature response and to identify the hub regulators of pollen shedding time regulation in Pinus tabuliformis Carr., we identified a set of temperature-sensitive genes by carrying out a comparative transcriptome analysis using six early pollen shedding trees (EPs) and six late pollen shedding trees (LPs) during mid-winter and at three consecutive time points in early spring. We carried out a weighted gene co-expression network analysis and constructed a transcription factor (TF) collaborative network, merging the common but differentially expressed TFs of the EPs and LPs into a joint network. We found five hub genes in the core TF module whose expression was rapidly induced by low temperatures. The transcriptional activity of this TF module was strongly associated with pollen shedding time, and likely to produce the fine balance between cold hardiness and growth activity in early spring. We confirmed the key role of temperature in regulating flowering time and identified a transcription factor module associated with pollen shedding time in P. tabuliformis. This suggests that repression of growth activity by repressors is the main mechanism balancing growth and cold hardiness in pine trees in early spring. Our results provide new insights into the molecular mechanisms regulating seasonal flowering time in pines.
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Affiliation(s)
- Shi-Hui Niu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Forest Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, PR China
| | - Shuang-Wei Liu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Forest Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, PR China
| | - Jing-Jing Ma
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Forest Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, PR China
| | - Fang-Xu Han
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Forest Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, PR China
| | - Yue Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Forest Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, PR China
| | - Wei Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Forest Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, PR China
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108
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Pan L, Yu X, Shao J, Liu Z, Gao T, Zheng Y, Zeng C, Liang C, Chen C. Transcriptomic profiling and analysis of differentially expressed genes in asparagus bean (Vigna unguiculata ssp. sesquipedalis) under salt stress. PLoS One 2019; 14:e0219799. [PMID: 31299052 PMCID: PMC6625716 DOI: 10.1371/journal.pone.0219799] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 07/01/2019] [Indexed: 01/17/2023] Open
Abstract
Asparagus bean (Vigna unguiculata ssp. sesquipedalis) is a warm season legume which is widely distributed over subtropical regions and semiarid areas. It is mainly grown as a significant protein source in developing countries. Salinity, as one of the main abiotic stress factors, constrains the normal growth and yield of asparagus bean. This study used two cultivars (a salt-sensitive genotype and a salt-tolerant genotype) under salt stress vs. control to identify salt-stress-induced genes in asparagus bean using RNA sequencing. A total of 692,086,838 high-quality clean reads, assigned to 121,138 unigenes, were obtained from control and salt-treated libraries. Then, 216 root-derived DEGs (differentially expressed genes) and 127 leaf-derived DEGs were identified under salt stress between the two cultivars. Of these DEGs, thirteen were assigned to six transcription factors (TFs), including AP2/EREBP, CCHC(Zn), C2H2, WRKY, WD40-like and LIM. GO analysis indicated four DEGs might take effects on the "oxidation reduction", "transport" and "signal transduction" process. Moreover, expression of nine randomly-chosen DEGs was verified by quantitative real-time-PCR (qRT-PCR) analysis. Predicted function of the nine tested DEGs was mainly involved in the KEGG pathway of cation transport, response to osmotic stress, and phosphorelay signal transduction system. A salt-stress-related pathway of "SNARE interactions in vesicular transport" was concerned. As byproducts, 15, 321 microsatellite markers were found in all the unigenes, and 17 SNP linked to six salt-stress induced DEGs were revealed. These candidate genes provide novel insights for understanding the salt tolerance mechanism of asparagus bean in the future.
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Affiliation(s)
- Lei Pan
- Hubei Province Engineering Research Center of Legume Plants, School of Life Sciences, Jianghan University, Wuhan, China
- Computational Biology Institute and Center for Biomolecular Sciences, Department of Physics, The George Washington University, Washington, DC, United States of America
| | - Xiaolu Yu
- Hubei Province Engineering Research Center of Legume Plants, School of Life Sciences, Jianghan University, Wuhan, China
| | - Jingjie Shao
- Hubei Province Engineering Research Center of Legume Plants, School of Life Sciences, Jianghan University, Wuhan, China
| | - Zhichao Liu
- Computational Biology Institute and Center for Biomolecular Sciences, Department of Physics, The George Washington University, Washington, DC, United States of America
| | - Tong Gao
- Hubei Province Engineering Research Center of Legume Plants, School of Life Sciences, Jianghan University, Wuhan, China
| | - Yu Zheng
- Institute for Interdisciplinary Research, Jianghan University, Wuhan, China
| | - Chen Zeng
- Computational Biology Institute and Center for Biomolecular Sciences, Department of Physics, The George Washington University, Washington, DC, United States of America
| | - Chengzhi Liang
- Institute of Genetics and Development, Chinese Academy of Sciences, Beijing, China
| | - Chanyou Chen
- Hubei Province Engineering Research Center of Legume Plants, School of Life Sciences, Jianghan University, Wuhan, China
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109
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Liu C, Ma H, Zhou J, Li Z, Peng Z, Guo F, Zhang J. TsHD1 and TsNAC1 cooperatively play roles in plant growth and abiotic stress resistance of Thellungiella halophile. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 99:81-97. [PMID: 30851211 DOI: 10.1111/tpj.14310] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 02/18/2019] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
T. HALOPHILA HOMEOBOX PROTEIN 1(TsHD1) cloned from the halophyte Thellungiella halophila is a homeodomain (HD) transcription factor gene and functions as a collaborator of TsNAC1. TsHD1 can form heterodimers with TsNAC1 via the interaction between its zinc finger (ZF) domain and the A subdomain of TsNAC1. The overexpression of TsHD1 improved the heat stress resistance of T. halophila and retarded its vegetative growth slightly. The co-overexpression of TsHD1 and TsNAC1 highly improved heat and drought stress resistance by increasing the accumulation of heat shock proteins and enhancing the expression levels of drought stress response genes, such as MYB DOMAIN PROTEIN 77 and MYB DOMAIN PROTEIN 96 (MYB77and MYB96) and SALT TOLERANCE ZINC FINGER 10 and SALT TOLERANCE ZINC FINGER 18 (ZAT10 and ZAT18), but seriously retarded the vegetative growth of T. halophila by restraining cell expansion. The heterodimer of TsHD1 and TsNAC1 has higher transcriptional activation activity and higher stability compared with the homodimer of TsHD1 or TsNAC1. The binding sites of the TsHD1 and TsNAC1 heterodimers were found to exist in the promoters of most upregulated genes in Cauliflower mosaic virus 35S promoter (P35S)::TsHD1 and P35S::TsNAC1 transgene lines compared with the wild type using RNA-seq and genomic data analyses. Moreover, the binding sites in the promoter region of the most downregulated genes were located in the vicinity of the TATA-box. This study reveals that TsNAC1 and TsHD1 play roles in plant growth and abiotic stress resistance synergistically, and the effects depend on the heterodimer binding to the specific target sites in the promoter region.
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Affiliation(s)
- Can Liu
- School of Life Sciences, Shandong University, Qingdao, Shandong, China
| | - Haizhen Ma
- School of Life Sciences, Shandong University, Qingdao, Shandong, China
| | - Jie Zhou
- School of Life Sciences, Shandong University, Qingdao, Shandong, China
| | - Zhaoxia Li
- School of Life Sciences, Shandong University, Qingdao, Shandong, China
| | - Zhenghua Peng
- School of Life Sciences, Shandong University, Qingdao, Shandong, China
| | - Fei Guo
- School of Computer Science and Technology, Tianjin University, Tianjin, China
| | - Juren Zhang
- School of Life Sciences, Shandong University, Qingdao, Shandong, China
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110
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Palmer NA, Basu S, Heng-Moss T, Bradshaw JD, Sarath G, Louis J. Fall armyworm (Spodoptera frugiperda Smith) feeding elicits differential defense responses in upland and lowland switchgrass. PLoS One 2019; 14:e0218352. [PMID: 31194847 PMCID: PMC6564039 DOI: 10.1371/journal.pone.0218352] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 05/30/2019] [Indexed: 12/14/2022] Open
Abstract
Switchgrass (Panicum virgatum L.) is a low input, high biomass perennial grass being developed for the bioenergy sector. Upland and lowland cultivars can differ in their responses to insect herbivory. Fall armyworm [FAW; Spodoptera frugiperda JE Smith (Lepidoptera: Noctuidae)] is a generalist pest of many plant species and can feed on switchgrass as well. Here, in two different trials, FAW larval mass were significantly reduced when fed on lowland cultivar Kanlow relative to larvae fed on upland cultivar Summer plants after 10 days. Hormone content of plants indicated elevated levels of the plant defense hormone jasmonic acid (JA) and its bioactive conjugate JA-Ile although significant differences were not observed. Conversely, the precursor to JA, 12-oxo-phytodienoic acid (OPDA) levels were significantly different between FAW fed Summer and Kanlow plants raising the possibility of differential signaling by OPDA in the two cultivars. Global transcriptome analysis revealed a stronger response in Kanlow plant relative to Summer plants. Among these changes were a preferential upregulation of several branches of terpenoid and phenylpropanoid biosynthesis in Kanlow plants suggesting that enhanced biosynthesis or accumulation of antifeedants could have negatively impacted FAW larval mass gain on Kanlow plants relative to Summer plants. A comparison of the switchgrass-FAW RNA-Seq dataset to those from maize-FAW and switchgrass-aphid interactions revealed that key components of plant responses to herbivory, including induction of JA biosynthesis, key transcription factors and JA-inducible genes were apparently conserved in switchgrass and maize. In addition, these data affirm earlier studies with FAW and aphids that the cultivar Kanlow can provide useful genetics for the breeding of switchgrass germplasm with improved insect resistance.
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Affiliation(s)
- Nathan A. Palmer
- Wheat, Sorghum, and Forage Research Unit, USDA-ARS, Lincoln, NE, United States of America
| | - Saumik Basu
- Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE, United States of America
| | - Tiffany Heng-Moss
- Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE, United States of America
| | - Jeffrey D. Bradshaw
- Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE, United States of America
| | - Gautam Sarath
- Wheat, Sorghum, and Forage Research Unit, USDA-ARS, Lincoln, NE, United States of America
- Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE, United States of America
| | - Joe Louis
- Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE, United States of America
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, United States of America
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Sun M, Shen Y, Yin K, Guo Y, Cai X, Yang J, Zhu Y, Jia B, Sun X. A late embryogenesis abundant protein GsPM30 interacts with a receptor like cytoplasmic kinase GsCBRLK and regulates environmental stress responses. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 283:70-82. [PMID: 31128717 DOI: 10.1016/j.plantsci.2019.02.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 02/17/2019] [Accepted: 02/22/2019] [Indexed: 06/09/2023]
Abstract
A Glycine soja receptor like cytoplasmic kinase GsCBRLK was previously characterized as a positive regulator of salt tolerance. However, how GsCBRLK regulates stress responses remains obscure. Here, we report the interaction between GsCBRLK and a group 3 late embryogenesis abundant protein GsPM30, and suggest its role in stress responses. GsPM30 was found to physically associate with GsCBRLK through yeast two hybrid assays, which was verified by bimolecular fluorescence complementation analysis. Deletion analyses showed that the N-terminal variable domain of GsCBRLK was sufficient for GsPM30 interaction. Besides GsPM30, GsCBRLK could associate with several group 3 LEAs, of which the N-terminus sequences show high identity with GsPM30. Lower binding affinity or even no interaction was observed between GsCBRLK and other group 3 LEAs, which are less closely related to GsPM30. Furthermore, we observed that GsPM30 could localize surrounding the internal circumference of plant cells, as well as in cytoplasm and nucleus. In addition, GUS staining and quantitative real-time PCR results suggested the ubiquitous expression in different tissues and induced expression by NaCl and mannitol treatments for GsPM30. Consistently, GsPM30 overexpression in Arabidopsis caused increased tolerance to high salinity and dehydration/water deficit at both the young and adult seedling stages. Our results demonstrated the interaction between GsCBRLK and LEAs, and revealed the positive role of GsPM30 in stress responses.
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Affiliation(s)
- Mingzhe Sun
- Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Yang Shen
- Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Kuide Yin
- Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Yongxia Guo
- Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Xiaoxi Cai
- Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Junkai Yang
- Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Yanming Zhu
- Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Bowei Jia
- Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China.
| | - Xiaoli Sun
- Crop Stress Molecular Biology Laboratory, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China.
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112
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Gao W, Yu C, Ai L, Zhou Y, Duan L. Gene Expression Profiles Deciphering the Pathways of Coronatine Alleviating Water Stress in Rice ( Oryza sativa L.) Cultivar Nipponbare (Japonica). Int J Mol Sci 2019; 20:ijms20102543. [PMID: 31126161 PMCID: PMC6567010 DOI: 10.3390/ijms20102543] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 04/18/2019] [Accepted: 04/24/2019] [Indexed: 11/16/2022] Open
Abstract
Coronatine (COR) is a structural and functional analog of methyl jasmonic acid (MeJA), which can alleviate stress on plant. We studied the effects of COR on the drought stress of rice (Oryza sativa L.). Pre-treatment with COR significantly increased the biomass, relative water and proline content, and DPPH (1,1-diphenyl-2-picrylhydrazyl)-radical scavenging activity, decreased the electrolyte leakage and MDA (Malondialdehyde) content in order to maintain the stability of cell membrane. Meanwhile, we determined how COR alleviates water stress by Nipponbare gene expression profiles and cDNA microarray analyses. Seedlings were treated with 0.1 μmol L−1 COR at the three leafed stage for 12 h, followed with 17.5% polyethylene glycol (PEG). Whole genome transcript analysis was determined by employing the Rice Gene Chip (Affymetrix), a total of 870 probe sets were identified to be up or downregulated due to COR treatment under drought stress. Meanwhile, the real-time quantitative PCR (RT-qPCR) method was used to verify some genes; it indicated that there was a good agreement between the microarray data and RT-qPCR results. Our data showed that the differentially expressed genes were involved in stress response, signal transduction, metabolism and tissue structure development. Some important genes response to stress were induced by COR, which may enhance the expression of functional genes implicated in many kinds of metabolism, and play a role in defense response of rice seedling to drought stress. This study will aid in the analysis of the expressed gene induced by COR.
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Affiliation(s)
- Wei Gao
- Engineering Center for Plant Growth Regulators MOE, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Chunxin Yu
- Engineering Center for Plant Growth Regulators MOE, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Lin Ai
- Engineering Center for Plant Growth Regulators MOE, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Yuyi Zhou
- Engineering Center for Plant Growth Regulators MOE, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Liusheng Duan
- Engineering Center for Plant Growth Regulators MOE, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
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Ectopic expression of GmZAT4, a putative C2H2-type zinc finger protein, enhances PEG and NaCl stress tolerances in Arabidopsis thaliana. 3 Biotech 2019; 9:166. [PMID: 30997303 DOI: 10.1007/s13205-019-1673-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 03/09/2019] [Indexed: 01/19/2023] Open
Abstract
The zinc finger protein (ZFP) transcription factor family plays an important role in regulating plant growth, development, and response to abiotic stress. In this study, we aimed to determine the role of GmZAT4, a C2H2-type transcription factor, in abiotic stress tolerance. The complete coding sequence of the GmZAT4 gene was isolated from soybean root RNA, which shows highest expression level compared with leaf, flower and other tissues. Using multiple sequence alignment and conserved domain analysis, we showed that GmZAT4 is a typical C2H2-type transcription factor which is comprised of two C2H2 domains, including a highly conserved QALGGH motif, and implied the regulation of abiotic stress tolerance in plant. A phylogenetic tree revealed that the soybean GmZAT4 gene clustered with ZAT4 from Glycine soja and AZF1, AZF2, and AZF3 from Arabidopsis thaliana. The mRNA expression levels of GmZAT4 were determined in two soybean cultivars by quantitative reverse transcription (qRT)-PCR and compared. The results showed higher expression (up to 60, 25 and 4 times, respectively) in the drought-tolerant type (Jinda 74) compared to the drought-sensitive soybean cultivar (Jinda 53) following treatment with 18% PEG, 150 mM NaCl, or 100 µM abscisic acid (ABA). GmZAT4 was ectopically over-expressed in A. thaliana to determine its role in abiotic stress tolerance. GmZAT4 overexpression enhanced the tolerance of A. thaliana to treatment with 20% PEG and 150 mM NaCl, and improved the germination rate following treatment with 1 µM or 2 µM ABA. The expression profiles of marker genes in the ABA signaling pathway, such as RD29A, RD29B, ABI, and RAD, indicated that GmZAT4 enhanced the abiotic stress tolerance of Arabidopsis. These results suggest that the C2H2-type ZFP encoded by GmZAT4 plays an important role in PEG and NaCl stress tolerance and ABA responses in soybean and A. thaliana.
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Han YC, Fu CC. Cold-inducible MaC2H2s are associated with cold stress response of banana fruit via regulating MaICE1. PLANT CELL REPORTS 2019; 38:673-680. [PMID: 30826844 DOI: 10.1007/s00299-019-02399-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 02/23/2019] [Indexed: 05/21/2023]
Abstract
MaC2H2s are involved in cold stress response of banana fruit via repressing the transcription of MaICE1. Although C2H2 zinc finger proteins have been found to be involved in banana fruit ripening through transcriptional controlling of ethylene biosynthetic genes, their involvement in cold stress of banana remains elusive. In this study, another C2H2-ZFP gene from banana fruit was identified, which was named as MaC2H2-3. Gene expression analysis revealed that MaC2H2-1, MaC2H2-2 and MaC2H2-3 were cold inducible in the peel of banana during low temperature storage. MaC2H2-3 functions as a transcriptional repressor and localizes predominantly in nucleus. Particularly, promoters of MaC2H2-2 and MaC2H2-3 were noticeably activated by cold as well, further indicating the potential roles of C2H2 in cold stress of banana. Moreover, MaC2H2-2 and MaC2H2-3 significantly repressed the transcription of MaICE1, a key component in cold signaling pathway. Overall, these findings suggest that MaC2H2s may take part in controlling cold stress of banana through suppressing the transcription of MaICE1, providing new insight of the regulatory basis of C2H2 in cold stress.
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Affiliation(s)
- Yan-Chao Han
- Institute of Food Science, Zhejiang Academy of Agricultural Science, Key Laboratory of Post-Harvest Handing of Fruits, Ministry of Agriculture, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Key Laboratory of China Light Industry, Hangzhou, 310021, People's Republic of China
| | - Chang-Chun Fu
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, People's Republic of China.
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Noman A, Aqeel M, Khalid N, Islam W, Sanaullah T, Anwar M, Khan S, Ye W, Lou Y. Zinc finger protein transcription factors: Integrated line of action for plant antimicrobial activity. Microb Pathog 2019; 132:141-149. [PMID: 31051192 DOI: 10.1016/j.micpath.2019.04.042] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 03/11/2019] [Accepted: 04/29/2019] [Indexed: 11/17/2022]
Abstract
The plants resist/tolerate unfavorable conditions in their natural habitats by using different but aligned and integrated defense mechanisms. Such defense responses include not only morphological and physiological adaptations but also the genomic and transcriptomic reconfiguration. Microbial attack on plants activates multiple pro-survival pathways such as transcriptional reprogramming, hypersensitive response (HR), antioxidant defense system and metabolic remodeling. Up-regulation of these processes during biotic stress conditions directly relates with plant survival. Over the years, hundreds of plant transcription factors (TFs) belonging to diverse families have been identified. Zinc finger protein (ZFP) TFs have crucial role in phytohormone response, plant growth and development, stress tolerance, transcriptional regulation, RNA binding and protein-protein interactions. Recent research progress has revealed regulatory and biological functions of ZFPs in incrementing plant resistance to pathogens. Integration of transcriptional activity with metabolic modulations has miniaturized plant innate immunity. However, the precise roles of different zinc finger TFs in plant immunity to pathogens have not been thoroughly analyzed. This review consolidates the pivotal functioning of zinc finger TFs and proposes the integrative understanding as foundation for the plant growth and development including the stress responses.
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Affiliation(s)
- Ali Noman
- Institute of Insect Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, PR China; Department of Botany, Government College University, Faisalabad, Pakistan; College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, PR China.
| | - Muhammad Aqeel
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Science, Lanzhou University, Lanzhou, Gansu, PR China
| | - Noreen Khalid
- Department of Botany, Government College Women University, Sialkot, Pakistan
| | - Waqar Islam
- Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, 350007, China; Institute of Geography, Fujian Normal University, Fuzhou, 350007, China
| | - Tayyaba Sanaullah
- Institute of Pure and Applied Biology, Bahaud Din Zakria University, Multan, Pakistan
| | - Muhammad Anwar
- College of Life Science and Oceanology, Shenzhen University, Shenzhen, PR China
| | - Shahbaz Khan
- College of Agriculture, Shangxi Agricultural University, Jinzhong, PR China
| | - Wenfeng Ye
- Institute of Insect Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, PR China
| | - Yonggen Lou
- Institute of Insect Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, PR China.
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116
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Lee HG, Seo PJ. MYB96 recruits the HDA15 protein to suppress negative regulators of ABA signaling in Arabidopsis. Nat Commun 2019. [PMID: 30979883 DOI: 10.1038/s41467-019-09417-9411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023] Open
Abstract
Unlike activation of target genes in response to abscisic acid (ABA), how MYB96 transcription factor represses ABA-repressible genes to further enhance ABA responses remains unknown. Here, we show MYB96 interacts with the histone modifier HDA15 to suppress negative regulators of early ABA signaling. The MYB96-HDA15 complex co-binds to the promoters of a subset of RHO GTPASE OF PLANTS (ROP) genes, ROP6, ROP10, and ROP11, and represses their expression by removing acetyl groups of histone H3 and H4 from the cognate regions, particularly in the presence of ABA. In support, HDA15-deficient mutants display reduced ABA sensitivity and are susceptible to drought stress with derepression of the ROP genes, as observed in the myb96-1 mutant. Biochemical and genetic analyses show that MYB96 and HDA15 are interdependent in the regulation of ROP suppression. Thus, MYB96 confers maximal ABA sensitivity by regulating both positive and negative regulators of ABA signaling through distinctive molecular mechanisms.
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Affiliation(s)
- Hong Gil Lee
- Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Pil Joon Seo
- Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea.
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, 08826, Republic of Korea.
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117
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Lee HG, Seo PJ. MYB96 recruits the HDA15 protein to suppress negative regulators of ABA signaling in Arabidopsis. Nat Commun 2019; 10:1713. [PMID: 30979883 PMCID: PMC6461653 DOI: 10.1038/s41467-019-09417-1] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 03/06/2019] [Indexed: 12/18/2022] Open
Abstract
Unlike activation of target genes in response to abscisic acid (ABA), how MYB96 transcription factor represses ABA-repressible genes to further enhance ABA responses remains unknown. Here, we show MYB96 interacts with the histone modifier HDA15 to suppress negative regulators of early ABA signaling. The MYB96-HDA15 complex co-binds to the promoters of a subset of RHO GTPASE OF PLANTS (ROP) genes, ROP6, ROP10, and ROP11, and represses their expression by removing acetyl groups of histone H3 and H4 from the cognate regions, particularly in the presence of ABA. In support, HDA15-deficient mutants display reduced ABA sensitivity and are susceptible to drought stress with derepression of the ROP genes, as observed in the myb96-1 mutant. Biochemical and genetic analyses show that MYB96 and HDA15 are interdependent in the regulation of ROP suppression. Thus, MYB96 confers maximal ABA sensitivity by regulating both positive and negative regulators of ABA signaling through distinctive molecular mechanisms. MYB96 can regulate both positive and negative regulators of ABA signaling to maximize plant drought tolerance. Here, the authors show that MYB96 represses expression of ABA negative regulators in Arabidopsis by interacting with HDA15 and promoting histone deacetylation at the cognate regions.
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Affiliation(s)
- Hong Gil Lee
- Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Pil Joon Seo
- Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea. .,Plant Genomics and Breeding Institute, Seoul National University, Seoul, 08826, Republic of Korea.
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118
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Singh P, Mathew IE, Verma A, Tyagi AK, Agarwal P. Analysis of Rice Proteins with DLN Repressor Motif/S. Int J Mol Sci 2019; 20:ijms20071600. [PMID: 30935059 PMCID: PMC6479872 DOI: 10.3390/ijms20071600] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 01/25/2019] [Accepted: 01/31/2019] [Indexed: 12/12/2022] Open
Abstract
Transcriptional regulation includes both activation and repression of downstream genes. In plants, a well-established class of repressors are proteins with an ERF-associated amphiphilic repression/EAR domain. They contain either DLNxxP or LxLxL as the identifying hexapeptide motif. In rice (Oryza sativa), we have identified a total of 266 DLN repressor proteins, with the former motif and its modifications thereof comprising 227 transcription factors and 39 transcriptional regulators. Apart from DLNxxP motif conservation, DLNxP and DLNxxxP motifs with variable numbers/positions of proline and those without any proline conservation have been identified. Most of the DLN repressome proteins have a single DLN motif, with higher relative percentage in the C-terminal region. We have designed a simple yeast-based experiment wherein a DLN motif can successfully cause strong repression of downstream reporter genes, when fused to a transcriptional activator of rice or yeast. The DLN hexapeptide motif is essential for repression, and at least two “DLN” residues cause maximal repression. Comparatively, rice has more DLN repressor encoding genes than Arabidopsis, and DLNSPP motif from rice is 40% stronger than the known Arabidopsis SRDX motif. The study reports a straightforward assay to analyze repressor activity, along with the identification of a strong DLN repressor from rice.
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Affiliation(s)
- Purnima Singh
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India.
| | - Iny Elizebeth Mathew
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India.
| | - Ankit Verma
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India.
| | - Akhilesh K Tyagi
- Department of Plant Molecular Biology, South Campus Delhi University, New Delhi-110021, India.
| | - Pinky Agarwal
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India.
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119
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Sun B, Zhao Y, Shi S, Yang M, Xiao K. TaZFP1, a C2H2 type-ZFP gene of T. aestivum, mediates salt stress tolerance of plants by modulating diverse stress-defensive physiological processes. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 136:127-142. [PMID: 30665058 DOI: 10.1016/j.plaphy.2019.01.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/10/2019] [Accepted: 01/11/2019] [Indexed: 05/21/2023]
Abstract
Salt stress suppresses plant growth, development, and crop productivity. In this study, we characterized the role of TaZFP1, a C2H2 type-zinc finger protein family member of T. aestivum, in salt stress tolerance. TaZFP1 possesses a conserved C2H2 motif (CX2-4CX12HX3-5H) shared by plant ZFP proteins, translocates to the nucleus after endoplasmic reticulum (ER) assortment, and displays a ZF 3-D structure similar to its eukaryote homologs. The transcripts of TaZFP1 were upregulated during salt stress condition and this effect was restored under normal conditions. Compared to wild type (WT), the transgenic lines of TaZFP1 overexpression or knockdown displayed improved phenotypes, biomass, photosynthesis parameters (Pn, ΨPSII, and NPQ), osmolytes contents (i.e. proline and soluble sugar), and enhanced antioxidant enzyme (AE) activity following salt stress treatment. A set of genes associated with proline synthesis (i.e., NtP5CS1 and NtP5CS2) and encoding AEs (i.e., NtSOD2, NtCAT1, and NtPOD4) were upregulated in the salt-challenged transgenic lines of TaZFP1 expression. Additionally, the transgenic lines exhibited similar stomata movement patterns and leaf water retention properties under salinity conditions compared to those induced by exogenous abscisic acid (ABA) treatment, suggesting that the TaZFP1-mediated salt response is dependent on the ABA signaling. High throughput RNAseq analysis revealed significant alteration of gene transcription in transgenic lines upon salt stress. Among them, the differentially expressed genes (DEGs) represented by the gene ontology (GO) terms were associated with organic acid, carboxylic acid, carbohydrate, and coenzyme as well as organonitrogen compounds, translation, peptide metabolism, and peptide biosynthesis. A set of upregulated DEGs were found to be thylakoid- and photosystem-associated, which is consistent with the TaZFP1-mediated improvement in photosynthesis in salt-stressed transgenic lines. Our investigation indicated that the TaZFP1-mediated salt tolerance is ascribed to the regulation of gene functions related to photosynthesis, osmolytes metabolism and ROS homeostasis mediated by ABA signaling.
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Affiliation(s)
- Binggao Sun
- College of Agronomy, Hebei Agricultural University, Key Laboratory of Crop Growth Regulation of Hebei Province, 289 Lingyusi Street, Baoding, 071001, PR China
| | - Yingjia Zhao
- College of Agronomy, Hebei Agricultural University, Key Laboratory of Crop Growth Regulation of Hebei Province, 289 Lingyusi Street, Baoding, 071001, PR China
| | - Shuya Shi
- College of Agronomy, Hebei Agricultural University, Key Laboratory of Crop Growth Regulation of Hebei Province, 289 Lingyusi Street, Baoding, 071001, PR China
| | - Mengya Yang
- College of Agronomy, Hebei Agricultural University, Key Laboratory of Crop Growth Regulation of Hebei Province, 289 Lingyusi Street, Baoding, 071001, PR China
| | - Kai Xiao
- College of Agronomy, Hebei Agricultural University, Key Laboratory of Crop Growth Regulation of Hebei Province, 289 Lingyusi Street, Baoding, 071001, PR China.
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The Biological Significance and Regulatory Mechanism of c-Myc Binding Protein 1 (MBP-1). Int J Mol Sci 2018; 19:ijms19123868. [PMID: 30518090 PMCID: PMC6320933 DOI: 10.3390/ijms19123868] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 01/04/2023] Open
Abstract
Alternatively translated from the ENO gene and expressed in an array of vertebrate and plant tissues, c-Myc binding protein 1 (MBP-1) participates in the regulation of growth in organisms, their development and their environmental responses. As a transcriptional repressor of multiple proto-oncogenes, vertebrate MBP-1 interacts with other cellular factors to attenuate the proliferation and metastasis of lung, breast, esophageal, gastric, bone, prostrate, colorectal, and cervical cancer cells. Due to its tumor-suppressive property, MBP-1 and its downstream targets have been investigated as potential prognostic markers and therapeutic targets for various cancers. In plants, MBP-1 plays an integral role in regulating growth and development, fertility and abiotic stress responses. A better understanding of the functions and regulatory factors of MBP-1 in plants may advance current efforts to maximize plant resistance against drought, high salinity, low temperature, and oxidative stress, thus optimizing land use and crop yields. In this review article, we summarize the research advances in biological functions and mechanistic pathways underlying MBP-1, describe our current knowledge of the ENO product and propose future research directions on vertebrate health as well as plant growth, development and abiotic stress responses.
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Peethambaran PK, Glenz R, Höninger S, Shahinul Islam SM, Hummel S, Harter K, Kolukisaoglu Ü, Meynard D, Guiderdoni E, Nick P, Riemann M. Salt-inducible expression of OsJAZ8 improves resilience against salt-stress. BMC PLANT BIOLOGY 2018; 18:311. [PMID: 30497415 DOI: 10.1186/s12870-018-1521-1520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 11/13/2018] [Indexed: 05/26/2023]
Abstract
BACKGROUND Productivity of important crop rice is greatly affected by salinity. The plant hormone jasmonate plays a vital role in salt stress adaptation, but also evokes detrimental side effects if not timely shut down again. As novel strategy to avoid such side effects, OsJAZ8, a negative regulator of jasmonate signalling, is expressed under control of the salt-inducible promoter of the transcription factor ZOS3-11, to obtain a transient jasmonate signature in response to salt stress. To modulate the time course of jasmonate signalling, either a full-length or a dominant negative C-terminally truncated version of OsJAZ8 driven by the ZOS3-11 promoter were expressed in a stable manner either in tobacco BY-2 cells, or in japonica rice. RESULTS The transgenic tobacco cells showed reduced mortality and efficient cycling under salt stress adaptation. This was accompanied by reduced sensitivity to Methyl jasmonate and increased responsiveness to auxin. In the case of transgenic rice, the steady-state levels of OsJAZ8 transcripts were more efficiently induced under salt stress compared to the wild type, this induction was more pronounced in the dominant-negative OsJAZ8 variant. CONCLUSIONS The result concluded that, more efficient activation of OsJAZ8 was accompanied by improved salt tolerance of the transgenic seedlings and demonstrates the impact of temporal signatures of jasmonate signalling for stress tolerance.
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Affiliation(s)
| | - René Glenz
- Karlsruhe Institute of Technology, Botanical Institute, Karlsruhe, Germany
| | - Sabrina Höninger
- Karlsruhe Institute of Technology, Botanical Institute, Karlsruhe, Germany
| | - S M Shahinul Islam
- Karlsruhe Institute of Technology, Botanical Institute, Karlsruhe, Germany
| | - Sabine Hummel
- University Tübingen, Zentrum für Molekularbiologie der Pflanzen (ZMBP), Plant Physiology, Tübingen, Germany
| | - Klaus Harter
- University Tübingen, Zentrum für Molekularbiologie der Pflanzen (ZMBP), Plant Physiology, Tübingen, Germany
| | - Üner Kolukisaoglu
- University Tübingen, Zentrum für Molekularbiologie der Pflanzen (ZMBP), Plant Physiology, Tübingen, Germany
| | - Donaldo Meynard
- Centre de coopération internationale en recherche agronomique pour le développement (CIRAD), unité mixte de recherche (UMR) Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales (AGAP), 34398, Montpellier, France
- Univ Montpellier, Cirad, Inra, Montpellier SupAgro, Montpellier, France
| | - Emmanuel Guiderdoni
- Centre de coopération internationale en recherche agronomique pour le développement (CIRAD), unité mixte de recherche (UMR) Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales (AGAP), 34398, Montpellier, France
- Univ Montpellier, Cirad, Inra, Montpellier SupAgro, Montpellier, France
| | - Peter Nick
- Karlsruhe Institute of Technology, Botanical Institute, Karlsruhe, Germany
| | - Michael Riemann
- Karlsruhe Institute of Technology, Botanical Institute, Karlsruhe, Germany.
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Peethambaran PK, Glenz R, Höninger S, Shahinul Islam SM, Hummel S, Harter K, Kolukisaoglu Ü, Meynard D, Guiderdoni E, Nick P, Riemann M. Salt-inducible expression of OsJAZ8 improves resilience against salt-stress. BMC PLANT BIOLOGY 2018; 18:311. [PMID: 30497415 PMCID: PMC6267056 DOI: 10.1186/s12870-018-1521-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 11/13/2018] [Indexed: 05/06/2023]
Abstract
BACKGROUND Productivity of important crop rice is greatly affected by salinity. The plant hormone jasmonate plays a vital role in salt stress adaptation, but also evokes detrimental side effects if not timely shut down again. As novel strategy to avoid such side effects, OsJAZ8, a negative regulator of jasmonate signalling, is expressed under control of the salt-inducible promoter of the transcription factor ZOS3-11, to obtain a transient jasmonate signature in response to salt stress. To modulate the time course of jasmonate signalling, either a full-length or a dominant negative C-terminally truncated version of OsJAZ8 driven by the ZOS3-11 promoter were expressed in a stable manner either in tobacco BY-2 cells, or in japonica rice. RESULTS The transgenic tobacco cells showed reduced mortality and efficient cycling under salt stress adaptation. This was accompanied by reduced sensitivity to Methyl jasmonate and increased responsiveness to auxin. In the case of transgenic rice, the steady-state levels of OsJAZ8 transcripts were more efficiently induced under salt stress compared to the wild type, this induction was more pronounced in the dominant-negative OsJAZ8 variant. CONCLUSIONS The result concluded that, more efficient activation of OsJAZ8 was accompanied by improved salt tolerance of the transgenic seedlings and demonstrates the impact of temporal signatures of jasmonate signalling for stress tolerance.
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Affiliation(s)
| | - René Glenz
- Karlsruhe Institute of Technology, Botanical Institute, Karlsruhe, Germany
| | - Sabrina Höninger
- Karlsruhe Institute of Technology, Botanical Institute, Karlsruhe, Germany
| | | | - Sabine Hummel
- University Tübingen, Zentrum für Molekularbiologie der Pflanzen (ZMBP), Plant Physiology, Tübingen, Germany
| | - Klaus Harter
- University Tübingen, Zentrum für Molekularbiologie der Pflanzen (ZMBP), Plant Physiology, Tübingen, Germany
| | - Üner Kolukisaoglu
- University Tübingen, Zentrum für Molekularbiologie der Pflanzen (ZMBP), Plant Physiology, Tübingen, Germany
| | - Donaldo Meynard
- Centre de coopération internationale en recherche agronomique pour le développement (CIRAD), unité mixte de recherche (UMR) Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales (AGAP), 34398 Montpellier, France
- Univ Montpellier, Cirad, Inra, Montpellier SupAgro, Montpellier, France
| | - Emmanuel Guiderdoni
- Centre de coopération internationale en recherche agronomique pour le développement (CIRAD), unité mixte de recherche (UMR) Amélioration Génétique et Adaptation des Plantes méditerranéennes et tropicales (AGAP), 34398 Montpellier, France
- Univ Montpellier, Cirad, Inra, Montpellier SupAgro, Montpellier, France
| | - Peter Nick
- Karlsruhe Institute of Technology, Botanical Institute, Karlsruhe, Germany
| | - Michael Riemann
- Karlsruhe Institute of Technology, Botanical Institute, Karlsruhe, Germany
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Cui B, Pan Q, Clarke D, Villarreal MO, Umbreen S, Yuan B, Shan W, Jiang J, Loake GJ. S-nitrosylation of the zinc finger protein SRG1 regulates plant immunity. Nat Commun 2018; 9:4226. [PMID: 30315167 PMCID: PMC6185907 DOI: 10.1038/s41467-018-06578-3] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 08/29/2018] [Indexed: 11/13/2022] Open
Abstract
Nitric oxide (NO) orchestrates a plethora of incongruent plant immune responses, including the reprograming of global gene expression. However, the cognate molecular mechanisms remain largely unknown. Here we show a zinc finger transcription factor (ZF-TF), SRG1, is a central target of NO bioactivity during plant immunity, where it functions as a positive regulator. NO accumulation promotes SRG1 expression and subsequently SRG1 occupies a repeated canonical sequence within target promoters. An EAR domain enables SRG1 to recruit the corepressor TOPLESS, suppressing target gene expression. Sustained NO synthesis drives SRG1 S-nitrosylation predominantly at Cys87, relieving both SRG1 DNA binding and transcriptional repression activity. Accordingly, mutation of Cys87 compromises NO-mediated control of SRG1-dependent transcriptional suppression. Thus, the SRG1-SNO formation may contribute to a negative feedback loop that attenuates the plant immune response. SRG1 Cys87 is evolutionary conserved and thus may be a target for redox regulation of ZF-TF function across phylogenetic kingdoms.
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Affiliation(s)
- Beimi Cui
- Jiangsu Normal University - Edinburgh University, Centre for Transformative Biotechnology of Medicinal and Food Plants, Jiangsu Normal University, 101 Shanghai Road, Xuzhou, P.R. China
- Key Laboratory of Biotechnology for Medicinal Plants, Jiangsu Normal University, 101 Shanghai Road, Xuzhou, P.R. China
- Institute of Molecular Plant Sciences, University of Edinburgh, Edinburgh, EH9 3BF, UK
| | - Qiaona Pan
- Jiangsu Normal University - Edinburgh University, Centre for Transformative Biotechnology of Medicinal and Food Plants, Jiangsu Normal University, 101 Shanghai Road, Xuzhou, P.R. China
- Key Laboratory of Biotechnology for Medicinal Plants, Jiangsu Normal University, 101 Shanghai Road, Xuzhou, P.R. China
- Institute of Molecular Plant Sciences, University of Edinburgh, Edinburgh, EH9 3BF, UK
| | - David Clarke
- School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK
| | | | - Saima Umbreen
- Institute of Molecular Plant Sciences, University of Edinburgh, Edinburgh, EH9 3BF, UK
| | - Bo Yuan
- Jiangsu Normal University - Edinburgh University, Centre for Transformative Biotechnology of Medicinal and Food Plants, Jiangsu Normal University, 101 Shanghai Road, Xuzhou, P.R. China
- Key Laboratory of Biotechnology for Medicinal Plants, Jiangsu Normal University, 101 Shanghai Road, Xuzhou, P.R. China
| | - Weixing Shan
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jihong Jiang
- Jiangsu Normal University - Edinburgh University, Centre for Transformative Biotechnology of Medicinal and Food Plants, Jiangsu Normal University, 101 Shanghai Road, Xuzhou, P.R. China
- Key Laboratory of Biotechnology for Medicinal Plants, Jiangsu Normal University, 101 Shanghai Road, Xuzhou, P.R. China
| | - Gary J Loake
- Jiangsu Normal University - Edinburgh University, Centre for Transformative Biotechnology of Medicinal and Food Plants, Jiangsu Normal University, 101 Shanghai Road, Xuzhou, P.R. China.
- Institute of Molecular Plant Sciences, University of Edinburgh, Edinburgh, EH9 3BF, UK.
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Faraji S, Rasouli SH, Kazemitabar SK. Genome-wide exploration of C2H2 zinc finger family in durum wheat (Triticum turgidum ssp. Durum): insights into the roles in biological processes especially stress response. Biometals 2018; 31:1019-1042. [PMID: 30288657 DOI: 10.1007/s10534-018-0146-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 09/22/2018] [Indexed: 11/30/2022]
Abstract
C2H2 type of zinc finger transcription factors (C2H2-ZFP TFs) play crucial roles in plant developments and stress response. Regarding its importance, genome-wide study of C2H2-ZFs were performed in multiple important plant species, but any such investigation was not fulfilled in Triticum turgidum ssp. Durum (durum wheat) as an important nutritional crop. The present study identified 122 C2H2-ZFs in durum wheat and physically mapped them onto the genome. The phylogenetic analysis classified these TFs into six major groups. Genes structure and conserved motifs assay showed TtC2H2-ZF involvement in the important cellular functions. Comparative phylogeny between durum wheat TtC2H2-ZF genes and the orthologs in rice revealed the evolutionary relationships of C2H2-ZF proteins. The gene ontology and promoter cis-element analysis indicated that most of TtC2H2-ZF genes are involved in multiple molecular functions including metal ion-binding and various stimuli responses. Further, the miRNAs targeting TtC2H2-ZF transcripts, homology modeling and proteins interaction network were also demonstrated, suggesting the vital cellular functions of TtC2H2-ZFs during various circumstances. The expression heatmap demonstrated differential and tissue-specific expression patterns of these genes. Expression profiling of this gene family members in response to dehydration and heat stresses showed differential expression pattern of these genes at multiple time points of stresses. This study can prepare a comprehensive overview of the durum wheat C2H2-ZF gene family and may provide a new perspective on the evolution of them, which will form the basis for further investigation of the roles of this family members and future genetic engineering studies in crops.
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Affiliation(s)
- Sahar Faraji
- Department of Plant Breeding, Faculty of Crop Science, Sari Agricultural Sciences and Natural Resources University (SANRU), Sari, Iran.
| | - Seyyed Hamidreza Rasouli
- Department of Entrepreneurship Technology, Faculty of Management, Payame Noor University (PNU), Babol, Iran
| | - Seyyed Kamal Kazemitabar
- Department of Plant Breeding, Faculty of Crop Science, Sari Agricultural Sciences and Natural Resources University (SANRU), Sari, Iran
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Bhatta M, Morgounov A, Belamkar V, Baenziger PS. Genome-Wide Association Study Reveals Novel Genomic Regions for Grain Yield and Yield-Related Traits in Drought-Stressed Synthetic Hexaploid Wheat. Int J Mol Sci 2018; 19:E3011. [PMID: 30279375 PMCID: PMC6212811 DOI: 10.3390/ijms19103011] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 09/27/2018] [Accepted: 09/29/2018] [Indexed: 01/09/2023] Open
Abstract
Synthetic hexaploid wheat (SHW; 2n = 6x = 42, AABBDD, Triticum aestivum L.) is produced from an interspecific cross between durum wheat (2n = 4x = 28, AABB, T. turgidum L.) and goat grass (2n = 2x = 14, DD, Aegilops tauschii Coss.) and is reported to have significant novel alleles-controlling biotic and abiotic stresses resistance. A genome-wide association study (GWAS) was conducted to unravel these loci [marker⁻trait associations (MTAs)] using 35,648 genotyping-by-sequencing-derived single nucleotide polymorphisms in 123 SHWs. We identified 90 novel MTAs (45, 11, and 34 on the A, B, and D genomes, respectively) and haplotype blocks associated with grain yield and yield-related traits including root traits under drought stress. The phenotypic variance explained by the MTAs ranged from 1.1% to 32.3%. Most of the MTAs (120 out of 194) identified were found in genes, and of these 45 MTAs were in genes annotated as having a potential role in drought stress. This result provides further evidence for the reliability of MTAs identified. The large number of MTAs (53) identified especially on the D-genome demonstrate the potential of SHWs for elucidating the genetic architecture of complex traits and provide an opportunity for further improvement of wheat under rapidly changing climatic conditions.
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Affiliation(s)
- Madhav Bhatta
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA.
| | - Alexey Morgounov
- International Maize and Wheat Improvement Center (CIMMYT), 06511 Emek, Ankara, Turkey.
| | - Vikas Belamkar
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA.
| | - P Stephen Baenziger
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA.
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Yuan X, Huang P, Wang R, Li H, Lv X, Duan M, Tang H, Zhang H, Huang J. A Zinc Finger Transcriptional Repressor Confers Pleiotropic Effects on Rice Growth and Drought Tolerance by Down-Regulating Stress-Responsive Genes. PLANT & CELL PHYSIOLOGY 2018; 59:2129-2142. [PMID: 30020522 DOI: 10.1093/pcp/pcy133] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Indexed: 05/23/2023]
Abstract
The C2H2-type zinc finger proteins (ZFPs) are involved in a wide range of plant development and stress responses. Many studies have shown the positive roles of ZFP genes in stress tolerance. However, overexpression of ZFP genes usually leads to the side effect of growth retardation. Here we report a new member of the ZFP family, Oryza sativa drought-responsive zinc finger protein 1 (OsDRZ1), positively regulating both stress tolerance and plant architecture in rice (Oryza sativa L.). OsDRZ1 was expressed throughout all tissues examined and could be induced by multiple abiotic stresses. OsDRZ1 protein was localized mostly in the nucleus. Unlike most reported rice ZFPs functioning as transcriptional activators, OsDRZ1 is a transcriptional repressor. Overexpression of OsDRZ1 in rice increased seedling drought tolerance and the transgenic plants appeared to accumulate more free proline and fewer reactive oxygen species (ROS), and elevate the activities of antioxidant enzymes. In contrast, RNA interference (RNAi) of OsDRZ1 led to lower activities of antioxidative response and more sensitivity to drought. RNA sequencing analysis revealed that the genes down-regulated by OsDRZ1 were mostly down-regulated by drought, implying the critical role of OsDRZ1 in modulating drought-responsive gene expression. A cupin gene OsGLP1 (germin-like protein1) was identified as one of the potential target genes of OsDRZ1, as suggested by real-time PCR and transient expression analysis in rice protoplasts. Moreover, overexpression of OsDRZ1 did not lead to growth inhibition but the promotion of rice growth, implying the potential application prospective of OsDRZ1 in engineering drought-tolerant crops.
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Affiliation(s)
- Xi Yuan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Peng Huang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Ruqin Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Haoyuan Li
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xueqing Lv
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Min Duan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Haijuan Tang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Hongsheng Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Ji Huang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing, China
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127
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Lawrence SD, Novak NG. Comparative analysis of the genetic variability within the Q-type C2H2 zinc-finger transcription factors in the economically important cabbage, canola and Chinese cabbage genomes. Hereditas 2018; 155:29. [PMID: 30258345 PMCID: PMC6150991 DOI: 10.1186/s41065-018-0065-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 08/22/2018] [Indexed: 12/29/2022] Open
Abstract
Background Brassica oleracea, B. rapa and B. napus encompass many economically important vegetable and oil crops; such as cabbage, broccoli, canola and Chinese cabbage. The genome sequencing of these species allows for gene discovery with an eye towards discerning the natural variability available for future breeding. The Q-type C2H2 zinc-finger protein (ZFP) transcription factors contain zinc finger motifs with a conserved QALGGH as part of the motif and they may play a critical role in the plants response to stress. While they may contain from one to five ZF domains (ZFD) this work focuses on the ZFPs that contain two zinc-fingers, which bind to the promoter of genes, and negatively regulate transcription via the EAR motif. B. oleracea and rapa are diploid and evolved into distinct species about 3.7 million years ago. B. napus is polyploid and formed by fusion of the diploids about 7500 years ago. Results This work identifies a total of 146 Q-type C2H2-ZFPs with 37 in B. oleracea, 35 in B. rapa and 74 in B. napus. The level of sequence similarity and arrangement of these genes on their chromosomes have mostly remained intact in B. napus, when compared to the chromosomes inherited from either B. rapa or oleracea. In contrast, the difference between the protein sequences of the orthologs of B. rapa and oleracea is greater and their organization on the chromosomes is much more divergent. In general, the 146 proteins are highly conserved especially within the known motifs. Differences within subgroups of ZFPs were identified. Considering that B. napus has twice the number of these proteins in its genome, RNA-Seq data was mined and the expression of 68 of the 74 genes was confirmed. Conclusion Alignment of these proteins gives a snapshot of the variability that may be available naturally in Brassica species. The aim is to study how different ZFPs bind different genes or how dissimilar EAR motifs alter the negative regulation of the genes bound to the ZFP. Results from such studies could be used to enhance tolerance in future Brassica breeding programs. Electronic supplementary material The online version of this article (10.1186/s41065-018-0065-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Susan D Lawrence
- Invasive Insect Biocontrol and Behavior Lab, USDA-ARS, 10300 Baltimore Ave., BARC-West Bldg 007, Rm 301, Beltsville, MD 20705 USA
| | - Nicole G Novak
- Invasive Insect Biocontrol and Behavior Lab, USDA-ARS, 10300 Baltimore Ave., BARC-West Bldg 007, Rm 301, Beltsville, MD 20705 USA
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128
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Wu R, Duan L, Pruneda-Paz JL, Oh DH, Pound M, Kay S, Dinneny JR. The 6xABRE Synthetic Promoter Enables the Spatiotemporal Analysis of ABA-Mediated Transcriptional Regulation. PLANT PHYSIOLOGY 2018; 177:1650-1665. [PMID: 29884679 PMCID: PMC6084650 DOI: 10.1104/pp.18.00401] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 05/16/2018] [Indexed: 05/17/2023]
Abstract
The water stress-associated hormone abscisic acid (ABA) acts through a well-defined signal transduction cascade to mediate downstream transcriptional events important for acclimation to stress. Although ABA signaling is known to function in specific tissues to regulate root growth, little is understood regarding the spatial pattern of ABA-mediated transcriptional regulation. Here, we describe the construction and evaluation of an ABSCISIC ACID RESPONSIVE ELEMENT (ABRE)-based synthetic promoter reporter that reveals the transcriptional response of tissues to different levels of exogenous ABA and stresses. Genome-scale yeast one-hybrid screens complemented these approaches and revealed how promoter sequence and architecture affect the recruitment of diverse transcription factors (TFs) to the ABRE. Our analysis also revealed ABA-independent activity of the ABRE-reporter under nonstress conditions, with expression being enriched at the quiescent center and stem cell niche. We show that the WUSCHEL RELATED HOMEOBOX5 and NAC DOMAIN PROTEIN13 TFs regulate QC/SCN expression of the ABRE reporter, which highlights the convergence of developmental and DNA-damage signaling pathways onto this cis-element in the absence of water stress. This work establishes a tool to study the spatial pattern of ABA-mediated transcriptional regulation and a repertoire of TF-ABRE interactions that contribute to the developmental and environmental control of gene expression in roots.
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Affiliation(s)
- Rui Wu
- Carnegie Institution for Science, Department of Plant Biology, Stanford, California 94305
- Temasek Lifesciences Laboratory, 117604, Singapore, Singapore
- National University of Singapore, Department of Biological Sciences, 117543, Singapore, Singapore
| | - Lina Duan
- Carnegie Institution for Science, Department of Plant Biology, Stanford, California 94305
| | - José L Pruneda-Paz
- University of California San Diego, Section of Cell and Developmental Biology, La Jolla, California 92093
| | - Dong-Ha Oh
- Louisiana State University, Department of Biological Sciences, Baton Rouge, Louisiana 70803
| | - Michael Pound
- University of Nottingham, School of Computer Science, Jubilee Campus, Nottingham, NG8 1BB, United Kingdom
| | - Steve Kay
- University of Southern California, The Keck School of Medicine, Los Angeles, California 90089
| | - José R Dinneny
- Carnegie Institution for Science, Department of Plant Biology, Stanford, California 94305
- Temasek Lifesciences Laboratory, 117604, Singapore, Singapore
- National University of Singapore, Department of Biological Sciences, 117543, Singapore, Singapore
- Stanford University, Department of Biology, Stanford, California 94305
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129
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Lawrence SD, Novak NG. Over-expression of StZFP2 in Solanum tuberosum L. var. Kennebec (potato) inhibits growth of Tobacco Hornworm larvae (THW, Manduca sexta L.). PLANT SIGNALING & BEHAVIOR 2018; 13:e1489668. [PMID: 29947577 PMCID: PMC6128685 DOI: 10.1080/15592324.2018.1489668] [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: 03/30/2018] [Revised: 06/01/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
Tobacco hornworm (Manduca sexta, THW) is a voracious pest of tomato and potato. StZFP2 is a Q-type C2H2 zinc finger transcription factor (TF) that is induced upon wounding and infestation. Previous work has shown that Q-type C2H2 TFs are involved in stress responses and when over expressed, can enhance protection against drought, salinity or pathogen infection. Twelve transgenic lines (S1-S12) were tested that over-express StZFP2. Feeding S6 or S8 to THW significantly lowered larval weight (21-37%) as well as increased expression of StPIN2 in comparison to untransformed Kennebec. The increase in StPIN2, a classic marker for insect defense in potato, is consistent with the decreases in larval weight gain.
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Affiliation(s)
- S. D. Lawrence
- Invasive Insect Biocontrol and Behavior Lab, USDA-ARS, Beltsville, MD, USA
| | - N. G. Novak
- Invasive Insect Biocontrol and Behavior Lab, USDA-ARS, Beltsville, MD, USA
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130
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Lawrence SD, Novak NG. The remarkable plethora of infestation-responsive Q-type C2H2 transcription factors in potato. BMC Res Notes 2018; 11:398. [PMID: 29921330 PMCID: PMC6011193 DOI: 10.1186/s13104-018-3503-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Accepted: 06/12/2018] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE Q-type C2H2 transcription factors (TF) play crucial roles in the plant response to stress, often leading to regulation of downstream genes required for tolerance to these challenges. An infestation-responsive Q-type C2H2 TF (StZFP2) is induced by wounding and infestation in potato. While mining the Solanum tuberosum Group Phureja genome for additional members of this family of proteins, five StZFP2-like genes were found on a portion of chromosome 11. The objective of this work was to differentiate these genes in tissue specificity and expression upon infestation. RESULTS Examination of different tissues showed that young roots had the highest amounts of transcripts for five of the genes. Expression of their transcripts upon excision or infestation by Manduca sexta, showed that all six genes were induced. Overall, each gene showed variations in its response to infestation and specificity for tissue expression. The six genes encode very similar proteins but most likely play unique roles in the plant response to infestation. In contrast, only two homologs have been identified in Arabidopsis and tomato. Overexpression of similar genes has led to enhanced tolerance to, for example, salinity, drought and pathogen stress. Discovery of these new StZFP2 homologs could provide additional resources for potato breeders.
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Affiliation(s)
- Susan D. Lawrence
- Invasive Insect Biocontrol and Behavior Lab, USDA-ARS, 10300 Baltimore Ave., BARC-West Bldg 007, Rm 301, Beltsville, MD 20705 USA
| | - Nicole G. Novak
- Invasive Insect Biocontrol and Behavior Lab, USDA-ARS, 10300 Baltimore Ave., BARC-West Bldg 007, Rm 301, Beltsville, MD 20705 USA
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131
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Shiri Y, Solouki M, Ebrahimie E, Emamjomeh A, Zahiri J. Unraveling the transcriptional complexity of compactness in sistan grape cluster. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 270:198-208. [PMID: 29576073 DOI: 10.1016/j.plantsci.2018.02.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 02/06/2018] [Accepted: 02/10/2018] [Indexed: 06/08/2023]
Abstract
Yaghooti grape of Sistan is the earliest ripening grape in Iran, harvested every May annually. It is adapted to dry conditions in Sistan region and its water requirement is less than the other grape cultivars. The transcriptional complexity of this grape was studied in three stages of cluster development. Totally, 24121 genes were expressed in different cluster development steps (step 1: cluster formation, step 2: berry formation, step 3: final size of cluster) of which 3040 genes in the first stage, 2381 genes in the second stage and 2400 genes in the third stage showed a significant increase in expression. GO analysis showed that when the clusters are ripening, the activity of the nucleus, cytoplasmic, cytosol, membrane and chloroplast genes in the cluster architecture cells decreases. In contrast, the activity of the endoplasmic reticulum, vacuole and extracellular region genes enhances. When Yaghooti grape is growing and developing, some of metabolic pathways were activated in the response to biotic and abiotic stresses. Gene co-expression network reconstruction showed that AGAMOUS is a key gene in compactness of Sistan grape cluster, because it influences on expression of GA gene which leads to increase cluster length and berries size.
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Affiliation(s)
- Yasoub Shiri
- PhD student of biotechnology, Department of Plant Breeding and Biotechnology (PBB), Faculty of Agriculture, University of Zabol, Zabol, Iran
| | - Mahmood Solouki
- Laboratory of Computational Biotechnology and Bioinformatics (CBB), Department of Plant Breeding and Biotechnology (PBB), Faculty of Agriculture, University of Zabol, Zabol, Iran.
| | - Esmaeil Ebrahimie
- School of Medicine, The University of Adelaide, SA, Australia; School of Information Technology and Mathematical Sciences, Division of Information Technology, Engineering and the Environment, University of South Australia, Adelaide, Australia; Institute of Biotechnology, Shiraz University, Shiraz, Iran; School of Biological Sciences, Faculty of Science and Engineering, Flinders University, Adelaide, Australia
| | - Abbasali Emamjomeh
- Laboratory of Computational Biotechnology and Bioinformatics (CBB), Department of Plant Breeding and Biotechnology (PBB), Faculty of Agriculture, University of Zabol, Zabol, Iran
| | - Javad Zahiri
- Bioinformatics and Computational Omics Lab (BioCOOL), Department of Biophysics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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Meng LS. Compound Synthesis or Growth and Development of Roots/Stomata Regulate Plant Drought Tolerance or Water Use Efficiency/Water Uptake Efficiency. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:3595-3604. [PMID: 29589939 DOI: 10.1021/acs.jafc.7b05990] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Water is crucial to plant growth and development because it serves as a medium for all cellular functions. Thus, the improvement of plant drought tolerance or water use efficiency/water uptake efficiency is important in modern agriculture. In this review, we mainly focus on new genetic factors for ameliorating drought tolerance or water use efficiency/water uptake efficiency of plants and explore the involvement of these genetic factors in the regulation of improving plant drought tolerance or water use efficiency/water uptake efficiency, which is a result of altered stomata density and improving root systems (primary root length, hair root growth, and lateral root number) and enhanced production of osmotic protectants, which is caused by transcription factors, proteinases, and phosphatases and protein kinases. These results will help guide the synthesis of a model for predicting how the signals of genetic and environmental stress are integrated at a few genetic determinants to control the establishment of either water use efficiency or water uptake efficiency. Collectively, these insights into the molecular mechanism underpinning the control of plant drought tolerance or water use efficiency/water uptake efficiency may aid future breeding or design strategies to increase crop yield.
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Affiliation(s)
- Lai-Sheng Meng
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , People's Republic of China
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Carvajal F, Rosales R, Palma F, Manzano S, Cañizares J, Jamilena M, Garrido D. Transcriptomic changes in Cucurbita pepo fruit after cold storage: differential response between two cultivars contrasting in chilling sensitivity. BMC Genomics 2018; 19:125. [PMID: 29415652 PMCID: PMC5804050 DOI: 10.1186/s12864-018-4500-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 01/28/2018] [Indexed: 11/18/2022] Open
Abstract
Background Zucchini fruit is susceptible to chilling injury (CI), but the response to low storage temperature is cultivar dependent. Previous reports about the response of zucchini fruit to chilling storage have been focused on the physiology and biochemistry of this process, with little information about the molecular mechanisms underlying it. In this work, we present a comprehensive analysis of transcriptomic changes that take place after cold storage in zucchini fruit of two commercial cultivars with contrasting response to chilling stress. Results RNA-Seq analysis was conducted in exocarp of fruit at harvest and after 14 days of storage at 4 and 20 °C. Differential expressed genes (DEGs) were obtained comparing fruit stored at 4 °C with their control at 20 °C, and then specific and common up and down-regulated DEGs of each cultivar were identified. Functional analysis of these DEGs identified similarities between the response of zucchini fruit to low temperature and other stresses, with an important number of GO terms related to biotic and abiotic stresses overrepresented in both cultivars. This study also revealed several molecular mechanisms that could be related to chilling tolerance, since they were up-regulated in cv. Natura (CI tolerant) or down-regulated in cv. Sinatra (CI sensitive). These mechanisms were mainly those related to carbohydrate and energy metabolism, transcription, signal transduction, and protein transport and degradation. Among DEGs belonging to these pathways, we selected candidate genes that could regulate or promote chilling tolerance in zucchini fruit including the transcription factors MYB76-like, ZAT10-like, DELLA protein GAIP, and AP2/ERF domain-containing protein. Conclusions This study provides a broader understanding of the important mechanisms and processes related to coping with low temperature stress in zucchini fruit and allowed the identification of some candidate genes that may be involved in the acquisition of chilling tolerance in this crop. These genes will be the basis of future studies aimed to identify markers involved in cold tolerance and aid in zucchini breeding programs. Electronic supplementary material The online version of this article (10.1186/s12864-018-4500-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- F Carvajal
- Department of Plant Physiology, Facultad de Ciencias, University of Granada, Fuentenueva s/n, 18071, Granada, Spain
| | - R Rosales
- Department of Plant Physiology, Facultad de Ciencias, University of Granada, Fuentenueva s/n, 18071, Granada, Spain
| | - F Palma
- Department of Plant Physiology, Facultad de Ciencias, University of Granada, Fuentenueva s/n, 18071, Granada, Spain
| | - S Manzano
- Department of Biology and Geology, Agrifood Campus of International Excellence (CeiA3), CIAIMBITAL, University of Almería, La Cañada de San Urbano s/n, 04120, Almería, Spain
| | - J Cañizares
- Institute for the Conservation and Breeding of Agricultural Biodiversity (COMAV-UPV), Universitat Politécnica de Valencia, Camino de Vera s/n, 46022, Valencia, Spain
| | - M Jamilena
- Department of Biology and Geology, Agrifood Campus of International Excellence (CeiA3), CIAIMBITAL, University of Almería, La Cañada de San Urbano s/n, 04120, Almería, Spain
| | - D Garrido
- Department of Plant Physiology, Facultad de Ciencias, University of Granada, Fuentenueva s/n, 18071, Granada, Spain.
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134
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Shen Q, Yu J, Fu L, Wu L, Dai F, Jiang L, Wu D, Zhang G. Ionomic, metabolomic and proteomic analyses reveal molecular mechanisms of root adaption to salt stress in Tibetan wild barley. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 123:319-330. [PMID: 29289898 DOI: 10.1016/j.plaphy.2017.12.032] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 12/14/2017] [Accepted: 12/20/2017] [Indexed: 05/18/2023]
Abstract
In our previous study, Tibetan wild barley (Hordeum spontaneum L.) has been found to be rich in the elite accessions with strong abiotic stress tolerance, including salt stress tolerance. However, the molecular mechanism of salt tolerance underlying the wild barley remains to be elucidated. In this study, two Tibetan wild barley accessions, XZ26 (salt-tolerant) and XZ169 (salt-sensitive), were used to investigate ionomic, metabolomic and proteomic responses in roots when exposed to 0, 200 (moderate) and 400 mM (high) salinity. XZ26 showed stronger root growth and maintained higher K concentrations when compared with XZ169 under moderate salinity, while no significant difference was found between the two accessions under high salinity. A total of 574 salt-regulated proteins and 153 salt-regulated metabolites were identified in the roots of both accessions based on quantitative proteomic (iTRAQ methods) and metabolomic (GC-TOF/MS) analysis. XZ26 developed its root adaptive strategies mainly by accumulating more compatible solutes such as proline and inositol, acquiring greater antioxidant ability to cope with ROS, and consuming less energy under salt stress for producing biomass. These findings provide a better understanding of molecular responses of root adaptive strategies to salt stress in the wild barley.
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Affiliation(s)
- Qiufang Shen
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Jiahua Yu
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Liangbo Fu
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Liyuan Wu
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Fei Dai
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Lixi Jiang
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Dezhi Wu
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China.
| | - Guoping Zhang
- Department of Agronomy, Key Laboratory of Crop Germplasm Resource of Zhejiang Province, Zhejiang University, Hangzhou 310058, China
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135
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Busatto N, Farneti B, Commisso M, Bianconi M, Iadarola B, Zago E, Ruperti B, Spinelli F, Zanella A, Velasco R, Ferrarini A, Chitarrini G, Vrhovsek U, Delledonne M, Guzzo F, Costa G, Costa F. Apple fruit superficial scald resistance mediated by ethylene inhibition is associated with diverse metabolic processes. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2018; 93:270-285. [PMID: 29160608 DOI: 10.1111/tpj.13774] [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: 09/08/2017] [Revised: 10/31/2017] [Accepted: 11/03/2017] [Indexed: 05/07/2023]
Abstract
Fruits stored at low temperature can exhibit different types of chilling injury. In apple, one of the most serious physiological disorders is superficial scald, which is characterized by discoloration and brown necrotic patches on the fruit exocarp. Although this phenomenon is widely ascribed to the oxidation of α-farnesene, its physiology is not yet fully understood. To elucidate the mechanism of superficial scald development and possible means of prevention, we performed an integrated metabolite screen, including an analysis of volatiles, phenols and lipids, together with a large-scale transcriptome study. We also determined that prevention of superficial scald, through the use of an ethylene action inhibitor, is associated with the triggering of cold acclimation-related processes. Specifically, the inhibition of ethylene perception stimulated the production of antioxidant compounds to scavenge reactive oxygen species, the synthesis of fatty acids to stabilize plastid and vacuole membranes against cold temperature, and the accumulation of the sorbitol, which can act as a cryoprotectant. The pattern of sorbitol accumulation was consistent with the expression profile of a sorbitol 6-phosphate dehydrogenase, MdS6PDH, the overexpression of which in transgenic Arabidopsis thaliana plants confirmed its involvement in the cold acclimation and freezing tolerance.
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Affiliation(s)
- Nicola Busatto
- Research and Innovation Centre, Fondazione Edmund Mach, via Mach 1, 38010, San Michele all' Adige, Trento, Italy
| | - Brian Farneti
- Research and Innovation Centre, Fondazione Edmund Mach, via Mach 1, 38010, San Michele all' Adige, Trento, Italy
| | - Mauro Commisso
- Department of Biotechnology, University of Verona, Strada le Grazie 15, Cà Vignal 1, 37134, Verona, Italy
| | - Martino Bianconi
- Department of Biotechnology, University of Verona, Strada le Grazie 15, Cà Vignal 1, 37134, Verona, Italy
| | - Barbara Iadarola
- Department of Biotechnology, University of Verona, Strada le Grazie 15, Cà Vignal 1, 37134, Verona, Italy
| | - Elisa Zago
- Department of Biotechnology, University of Verona, Strada le Grazie 15, Cà Vignal 1, 37134, Verona, Italy
| | - Benedetto Ruperti
- Department of Agronomy, Food, Natural Resources, Animal and Environment (DAFNAE), University of Padova, 35020, Legnaro, Italy
| | - Francesco Spinelli
- Department of Agricultural Science, University of Bologna, Via Fanin 46, 40127, Bologna, Italy
| | - Angelo Zanella
- Laimburg Research Centre for Agriculture and Forestry, via Laimburg 6, 39040, Ora, BZ, Italy
| | - Riccardo Velasco
- Research and Innovation Centre, Fondazione Edmund Mach, via Mach 1, 38010, San Michele all' Adige, Trento, Italy
| | - Alberto Ferrarini
- Department of Biotechnology, University of Verona, Strada le Grazie 15, Cà Vignal 1, 37134, Verona, Italy
| | - Giulia Chitarrini
- Research and Innovation Centre, Fondazione Edmund Mach, via Mach 1, 38010, San Michele all' Adige, Trento, Italy
| | - Urska Vrhovsek
- Research and Innovation Centre, Fondazione Edmund Mach, via Mach 1, 38010, San Michele all' Adige, Trento, Italy
| | - Massimo Delledonne
- Department of Biotechnology, University of Verona, Strada le Grazie 15, Cà Vignal 1, 37134, Verona, Italy
| | - Flavia Guzzo
- Department of Biotechnology, University of Verona, Strada le Grazie 15, Cà Vignal 1, 37134, Verona, Italy
| | - Guglielmo Costa
- Department of Agricultural Science, University of Bologna, Via Fanin 46, 40127, Bologna, Italy
| | - Fabrizio Costa
- Research and Innovation Centre, Fondazione Edmund Mach, via Mach 1, 38010, San Michele all' Adige, Trento, Italy
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136
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Liu X, Wei W, Zhu W, Su L, Xiong Z, Zhou M, Zheng Y, Zhou DX. Histone Deacetylase AtSRT1 Links Metabolic Flux and Stress Response in Arabidopsis. MOLECULAR PLANT 2017; 10:1510-1522. [PMID: 29107034 DOI: 10.1016/j.molp.2017.10.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 10/16/2017] [Accepted: 10/16/2017] [Indexed: 05/19/2023]
Abstract
How plant metabolic flux alters gene expression to optimize plant growth and response to stress remains largely unclear. Here, we report that Arabidopsis thaliana NAD+-dependent histone deacetylase AtSRT1 negatively regulates plant tolerance to stress and glycolysis but stimulates mitochondrial respiration. We found that AtSRT1 interacts with Arabidopsis cMyc-Binding Protein 1 (AtMBP-1), a transcriptional repressor produced by alternative translation of the cytosolic glycolytic enolase gene LOS2/ENO2. We demonstrated that AtSRT1 could associate with the chromatin of AtMBP-1 targets LOS2/ENO2 and STZ/ZAT10, both of which encode key stress regulators, and reduce the H3K9ac levels at these genes to repress their transcription. Overexpression of both AtSRT1 and AtMBP-1 had synergistic effects on the expression of glycolytic genes, glycolytic enzymatic activities, and mitochondrial respiration. Furthermore, we found that AtMBP-1 is lysine-acetylated and vulnerable to proteasomal protein degradation, while AtSRT1 could remove its lysine acetylation and significantly enhance its stability in vivo. Taken together, these results indicate that AtSRT1 regulates primary metabolism and stress response by both epigenetic regulation and modulation of AtMBP-1 transcriptional activity in Arabidopsis.
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Affiliation(s)
- Xiaoyun Liu
- Institute for Interdisciplinary Research, Jianghan University, Wuhan 430056, China
| | - Wei Wei
- Institute for Interdisciplinary Research, Jianghan University, Wuhan 430056, China.
| | - Wenjun Zhu
- College of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Lufang Su
- Institute for Interdisciplinary Research, Jianghan University, Wuhan 430056, China
| | - Zeyang Xiong
- Institute for Interdisciplinary Research, Jianghan University, Wuhan 430056, China
| | - Man Zhou
- Institute for Interdisciplinary Research, Jianghan University, Wuhan 430056, China
| | - Yu Zheng
- Institute for Interdisciplinary Research, Jianghan University, Wuhan 430056, China
| | - Dao-Xiu Zhou
- Institute Plant Science Paris-Saclay (IPS2), CNRS, INRA, Université Paris-sud 11, Université Paris-Saclay, B630, 91405 Orsay, France.
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137
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Wei Q, Zhang F, Sun F, Luo Q, Wang R, Hu R, Chen M, Chang J, Yang G, He G. A wheat MYB transcriptional repressor TaMyb1D regulates phenylpropanoid metabolism and enhances tolerance to drought and oxidative stresses in transgenic tobacco plants. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 265:112-123. [PMID: 29223332 DOI: 10.1016/j.plantsci.2017.09.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 09/15/2017] [Accepted: 09/29/2017] [Indexed: 05/24/2023]
Abstract
MYB transcription factors are involved in the regulation of plant development and response to biotic and abiotic stress. In this study, TaMyb1D, a novel subgroup 4 gene of the R2R3-MYB subfamily, was cloned from wheat (Triticum aestivum L.). TaMyb1D was localized in the nucleus and functioned as a transcriptional repressor. The overexpression of TaMyb1D in tobacco (Nicotiana tabacum) plants repressed the expression of genes related to phenylpropanoid metabolism and down-regulated the accumulation of lignin in stems and flavonoids in leaves. These changes affected plant development under normal conditions. The expression of TaMyb1D was ubiquitous and up-regulated by PEG6000 and H2O2 treatments in wheat. TaMyb1D-overexpressing transgenic tobacco plants exhibited higher relative water content and lower water loss rate during drought stress, as well as higher chlorophyll content in leaves during oxidative stress. The transgenic plants showed a lower leakage of ions as well as reduced malondialdehyde and H2O2 levels during conditions of drought and oxidative stresses. In addition, TaMyb1D up-regulated the expression levels of ROS- and stress-related genes in response to drought stress. Therefore, the overexpression of TaMyb1D enhanced tolerance to drought and oxidative stresses in tobacco plants. Our study demonstrates that TaMyb1D functions as a negative regulator of phenylpropanoid metabolism and a positive regulator of plant tolerance to drought and oxidative stresses.
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Affiliation(s)
- Qiuhui Wei
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Fan Zhang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Fusheng Sun
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Qingchen Luo
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Ruibin Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Rui Hu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Mingjie Chen
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Junli Chang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Guangxiao Yang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Guangyuan He
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
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138
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Aljaafri WAR, McNeece BT, Lawaju BR, Sharma K, Niruala PM, Pant SR, Long DH, Lawrence KS, Lawrence GW, Klink VP. A harpin elicitor induces the expression of a coiled-coil nucleotide binding leucine rich repeat (CC-NB-LRR) defense signaling gene and others functioning during defense to parasitic nematodes. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 121:161-175. [PMID: 29107936 DOI: 10.1016/j.plaphy.2017.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/06/2017] [Accepted: 10/09/2017] [Indexed: 05/23/2023]
Abstract
The bacterial effector harpin induces the transcription of the Arabidopsis thaliana NON-RACE SPECIFIC DISEASE RESISTANCE 1/HARPIN INDUCED1 (NDR1/HIN1) coiled-coil nucleotide binding leucine rich repeat (CC-NB-LRR) defense signaling gene. In Glycine max, Gm-NDR1-1 transcripts have been detected within root cells undergoing a natural resistant reaction to parasitism by the syncytium-forming nematode Heterodera glycines, functioning in the defense response. Expressing Gm-NDR1-1 in Gossypium hirsutum leads to resistance to Meloidogyne incognita parasitism. In experiments presented here, the heterologous expression of Gm-NDR1-1 in G. hirsutum impairs Rotylenchulus reniformis parasitism. These results are consistent with the hypothesis that Gm-NDR1-1 expression functions broadly in generating a defense response. To examine a possible relationship with harpin, G. max plants topically treated with harpin result in induction of the transcription of Gm-NDR1-1. The result indicates the topical treatment of plants with harpin, itself, may lead to impaired nematode parasitism. Topical harpin treatments are shown to impair G. max parasitism by H. glycines, M. incognita and R. reniformis and G. hirsutum parasitism by M. incognita and R. reniformis. How harpin could function in defense has been examined in experiments showing it also induces transcription of G. max homologs of the proven defense genes ENHANCED DISEASE SUSCEPTIBILITY1 (EDS1), TGA2, galactinol synthase, reticuline oxidase, xyloglucan endotransglycosylase/hydrolase, alpha soluble N-ethylmaleimide-sensitive fusion protein (α-SNAP) and serine hydroxymethyltransferase (SHMT). In contrast, other defense genes are not directly transcriptionally activated by harpin. The results indicate harpin induces pathogen associated molecular pattern (PAMP) triggered immunity (PTI) and effector-triggered immunity (ETI) defense processes in the root, activating defense to parasitic nematodes.
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Affiliation(s)
- Weasam A R Aljaafri
- Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, Mississippi State, MS 39762, United States.
| | - Brant T McNeece
- Department of Biological Sciences, Mississippi State University, Mississippi State, MS 39762, United States.
| | - Bisho R Lawaju
- Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, Mississippi State, MS 39762, United States.
| | - Keshav Sharma
- Department of Biological Sciences, Mississippi State University, Mississippi State, MS 39762, United States.
| | - Prakash M Niruala
- Department of Biological Sciences, Mississippi State University, Mississippi State, MS 39762, United States.
| | - Shankar R Pant
- Department of Biological Sciences, Mississippi State University, Mississippi State, MS 39762, United States.
| | - David H Long
- Albaugh, LLC, 4060 Dawkins Farm Drive, Olive Branch, MS 38654, United States.
| | - Kathy S Lawrence
- Department of Entomology and Plant Pathology, Auburn University, 209 Life Science Building, Auburn, AL 36849, United States.
| | - Gary W Lawrence
- Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, Mississippi State, MS 39762, United States.
| | - Vincent P Klink
- Department of Biological Sciences, Mississippi State University, Mississippi State, MS 39762, United States.
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139
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Geilen K, Heilmann M, Hillmer S, Böhmer M. WRKY43 regulates polyunsaturated fatty acid content and seed germination under unfavourable growth conditions. Sci Rep 2017; 7:14235. [PMID: 29079824 DOI: 10.1038/s41598-017-14695-14690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 10/16/2017] [Indexed: 05/24/2023] Open
Abstract
Seed germination and postgerminative growth of Arabidopsis thaliana and various other plant species are arrested in response to unfavourable environmental conditions by signalling events involving the phytohormone abscisic acid (ABA). In this study, we showed that loss of the seed-specific WRKY DNA-BINDING PROTEIN 43 (WRKY43) conferred increased tolerance towards high salt, high osmolarity and low temperature during seed germination in Arabidopsis. The wrky43 loss of function lines displayed increased inhibition of seed germination in response to exogenous ABA; whereas lines overexpressing WRKY43 were more tolerant towards exogenous ABA. Biochemical analysis of fatty acid composition revealed that loss of WRKY43 increased polyunsaturated fatty acid content in seeds, particularly 18:2Δ9,12 and 18:3Δ9,12,15 in triacylglycerols and phospholipids, indicating an important physiological effect on fatty acid desaturation with ramifications for the tolerance of plants to cold and osmotic stress and possibly, for oilseed engineering. Molecular analyses showed that ABA-induced regulation of FUSCA3, ZAT10 and seed storage proteins were absent in the wrky43 mutant. In summary, WRKY43 encodes for a novel positive regulator of ABA-dependent gene regulation and as a potent modulator of fatty acid desaturation and seed filling, which results in increased tolerance to abiotic stress.
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Affiliation(s)
- Katja Geilen
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität, Schlossplatz 7, Münster, Germany
| | - Mareike Heilmann
- Institute of Biochemistry/Biotechnology, Martin-Luther University Halle-Wittenberg, Kurt-Mothes-Straße 3, D-06120, Halle, Germany
| | - Stefan Hillmer
- Electron Microscopy Core Facility, University of Heidelberg, Im Neuenheimer Feld 345, 69120, Heidelberg, Germany
| | - Maik Böhmer
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität, Schlossplatz 7, Münster, Germany.
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140
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WRKY43 regulates polyunsaturated fatty acid content and seed germination under unfavourable growth conditions. Sci Rep 2017; 7:14235. [PMID: 29079824 PMCID: PMC5660175 DOI: 10.1038/s41598-017-14695-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 10/16/2017] [Indexed: 11/13/2022] Open
Abstract
Seed germination and postgerminative growth of Arabidopsis thaliana and various other plant species are arrested in response to unfavourable environmental conditions by signalling events involving the phytohormone abscisic acid (ABA). In this study, we showed that loss of the seed-specific WRKY DNA-BINDING PROTEIN 43 (WRKY43) conferred increased tolerance towards high salt, high osmolarity and low temperature during seed germination in Arabidopsis. The wrky43 loss of function lines displayed increased inhibition of seed germination in response to exogenous ABA; whereas lines overexpressing WRKY43 were more tolerant towards exogenous ABA. Biochemical analysis of fatty acid composition revealed that loss of WRKY43 increased polyunsaturated fatty acid content in seeds, particularly 18:2Δ9,12 and 18:3Δ9,12,15 in triacylglycerols and phospholipids, indicating an important physiological effect on fatty acid desaturation with ramifications for the tolerance of plants to cold and osmotic stress and possibly, for oilseed engineering. Molecular analyses showed that ABA-induced regulation of FUSCA3, ZAT10 and seed storage proteins were absent in the wrky43 mutant. In summary, WRKY43 encodes for a novel positive regulator of ABA-dependent gene regulation and as a potent modulator of fatty acid desaturation and seed filling, which results in increased tolerance to abiotic stress.
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141
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Huang L, Jia J, Zhao X, Zhang M, Huang X, E Ji, Ni L, Jiang M. The ascorbate peroxidase APX1 is a direct target of a zinc finger transcription factor ZFP36 and a late embryogenesis abundant protein OsLEA5 interacts with ZFP36 to co-regulate OsAPX1 in seed germination in rice. Biochem Biophys Res Commun 2017; 495:339-345. [PMID: 29106954 DOI: 10.1016/j.bbrc.2017.10.128] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 10/24/2017] [Indexed: 11/30/2022]
Abstract
Seed germination is a vital developmental process. Abscisic acid (ABA) is an essential repressor of seed germination, while ROS (reactive oxygen species) also plays a vital role in regulating seed germination. ABA could inhibit the production of ROS in seed germination, but the mechanism of ABA reduced ROS production in seed germination was hitherto unknown. Here, by ChIP (chromatin immunoprecipitation)-seq, we found that ZFP36, a rice zinc finger transcription factor, could directly bind to the promoter of OsAPX1, coding an ascorbate peroxidase (APX) which has the most affinity for H2O2 (substrate; a type of ROS), and act as a transcriptional activator of OsAPX1 promoter. Moreover, ZFP36 could interact with a late embryogenesis abundant protein OsLEA5 to co-regulate the promoter activity of OsAPX1. The seed germination is highly inhibited in ZFP36 overexpression plants under ABA treatment, while an RNA interference (RNAi) mutant of OsLEA5 rice seeds were less sensitive to ABA, and exogenous ASC (ascorbate acid) could alleviate the inhibition induced by ABA. Thus, our conclusion is that OsAPX1 is a direct target of ZFP36 and OsLEA5 could interact with ZFP36 to co-regulate ABA-inhibited seed germination by controlling the expression of OsAPX1.
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Affiliation(s)
- Liping Huang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Jing Jia
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Xixi Zhao
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - MengYao Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Xingxiu Huang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - E Ji
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Lan Ni
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Mingyi Jiang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China; National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China.
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142
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Liu D, Yang L, Luo M, Wu Q, Liu S, Liu Y. Molecular cloning and characterization of PtrZPT2-1, a ZPT2 family gene encoding a Cys2/His2-type zinc finger protein from trifoliate orange (Poncirus trifoliata (L.) Raf.) that enhances plant tolerance to multiple abiotic stresses. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 263:66-78. [PMID: 28818385 DOI: 10.1016/j.plantsci.2017.07.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 07/11/2017] [Accepted: 07/12/2017] [Indexed: 05/20/2023]
Abstract
In plants, most Cys2/His2 (C2H2) zinc finger proteins with two zinc finger domains (ZPT2) are involved in abiotic stress responses. In this study, a ZPT2 family gene PtrZPT2-1 was cloned from trifoliate orange (Poncirus trifoliata (L.) Raf.). PtrZPT2-1 is composed of 245 amino acids, has a putative molecular weight of 25.99kDa and an isoelectric point of 8.41. PtrZPT2-1 contained two C2H2 zinc finger domains, one nuclear localization signal (B-box), one transcription repression domain (DLN-box), and one protein-protein interaction domain (L-box). PtrZPT2-1 was localized to the nucleus. The PtrZPT2-1 expression was strongly induced by cold, drought, salt and ABA stresses. Overexpression of PtrZPT2-1 increased the survival rates, and the ABA, soluble sugar and proline levels but decreased the ion leakage, the malondialdehyde (MDA) content and reduced the H2O2 accumulation in the transgenic tobacco after cold, drought or salt treatments. Furthermore, the expression levels of 15 abiotic stress-related genes were significantly increased in the transgenic tobacco overexpressing PtrZPT2-1 after cold, drought or salt stress treatments. Our results indicated that overexpression of PtrZPT2-1 in the transgenic tobacco could improve the cold, drought and salt resistance of the plants by increasing the levels of osmotic regulatory solutes and decreasing the accumulation of H2O2.
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Affiliation(s)
- Dechun Liu
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Li Yang
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Man Luo
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Qi Wu
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Shanbei Liu
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yong Liu
- Department of Pomology, College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China.
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143
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Hura T, Dziurka M, Hura K, Ostrowska A, Dziurka K, Gadzinowska J. Wheat and rye genome confer specific phytohormone profile features and interplay under water stress in two phenotypes of triticale. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 118:494-509. [PMID: 28756347 DOI: 10.1016/j.plaphy.2017.07.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 07/17/2017] [Accepted: 07/18/2017] [Indexed: 05/04/2023]
Abstract
The aim of the experiment was to determine phytohormone profile of triticale and quality-based relationships between the analyzed groups of phytohormones. The study involved two triticale phenotypes, a long-stemmed one and a semi-dwarf one with Dw1 gene, differing in mechanisms of acclimation to drought and controlled by wheat or rye genome. Water deficit in the leaves triggered a specific phytohormone response in both winter triticale phenotypes attributable to the dominance of wheat (semi-dwarf cultivar) or rye (long-stemmed cultivar) genome. Rye genome in long-stemmed triticale was responsible for specific increase (tillering: gibberellic acid; heading: N6-isopentenyladenine, trans-zeatin-9-riboside, cis-zeatin-9-riboside; flowering: N6-isopentenyladenine, indolebutyric acid, salicylic acid) or decrease (heading: trans-zeatin) in the content of some phytohormones. Wheat genome in semi-dwarf triticale controlled a specific increase in trans-zeatin content at heading and anthesis in gibberellin A1 during anthesis. The greatest number of changes in the phytohormone levels was observed in the generative phase. In both triticale types, the pool of investigated phytohormones was dominated by abscisic acid and gibberellins. The semi-dwarf cultivar with Dw1 gene was less sensitive to gibberellins and its mechanisms of acclimation to water stress were mainly ABA-dependent. An increase in ABA and gibberellins during drought and predominance of these hormones in the total pool of analyzed phytohormones indicated their equal share in drought acclimation mechanisms in long-stemmed cultivar.
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Affiliation(s)
- Tomasz Hura
- Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, 30-239 Kraków, Niezapominajek 21, Poland.
| | - Michał Dziurka
- Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, 30-239 Kraków, Niezapominajek 21, Poland
| | - Katarzyna Hura
- Department of Plant Physiology, Faculty of Agriculture and Economics, Agricultural University, Podłużna 3, 30-239 Kraków, Poland
| | - Agnieszka Ostrowska
- Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, 30-239 Kraków, Niezapominajek 21, Poland
| | - Kinga Dziurka
- Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, 30-239 Kraków, Niezapominajek 21, Poland
| | - Joanna Gadzinowska
- Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, 30-239 Kraków, Niezapominajek 21, Poland
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144
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Wani SH, Dutta T, Neelapu NRR, Surekha C. Transgenic approaches to enhance salt and drought tolerance in plants. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.plgene.2017.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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145
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Fukushima A, Iwasa M, Nakabayashi R, Kobayashi M, Nishizawa T, Okazaki Y, Saito K, Kusano M. Effects of Combined Low Glutathione with Mild Oxidative and Low Phosphorus Stress on the Metabolism of Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2017; 8:1464. [PMID: 28894456 PMCID: PMC5581396 DOI: 10.3389/fpls.2017.01464] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 08/07/2017] [Indexed: 05/29/2023]
Abstract
Plants possess highly sensitive mechanisms that monitor environmental stress levels for a dose-dependent fine-tuning of their growth and development. Differences in plant responses to severe and mild abiotic stresses have been recognized. Although many studies have revealed that glutathione can contribute to plant tolerance to various environmental stresses, little is known about the relationship between glutathione and mild abiotic stress, especially the effect of stress-induced altered glutathione levels on the metabolism. Here, we applied a systems biology approach to identify key pathways involved in the gene-to-metabolite networks perturbed by low glutathione content under mild abiotic stress in Arabidopsis thaliana. We used glutathione synthesis mutants (cad2-1 and pad2-1) and plants overexpressing the gene encoding γ-glutamylcysteine synthetase, the first enzyme of the glutathione biosynthetic pathway. The plants were exposed to two mild stress conditions-oxidative stress elicited by methyl viologen and stress induced by the limited availability of phosphate. We observed that the mutants and transgenic plants showed similar shoot growth as that of the wild-type plants under mild abiotic stress. We then selected the synthesis mutants and performed multi-platform metabolomics and microarray experiments to evaluate the possible effects on the overall metabolome and the transcriptome. As a common oxidative stress response, several flavonoids that we assessed showed overaccumulation, whereas the mild phosphate stress resulted in increased levels of specific kaempferol- and quercetin-glycosides. Remarkably, in addition to a significant increased level of sugar, osmolytes, and lipids as mild oxidative stress-responsive metabolites, short-chain aliphatic glucosinolates over-accumulated in the mutants, whereas the level of long-chain aliphatic glucosinolates and specific lipids decreased. Coordinated gene expressions related to glucosinolate and flavonoid biosynthesis also supported the metabolite responses in the pad2-1 mutant. Our results suggest that glutathione synthesis mutants accelerate transcriptional regulatory networks to control the biosynthetic pathways involved in glutathione-independent scavenging metabolites, and that they might reconfigure the metabolic networks in primary and secondary metabolism, including lipids, glucosinolates, and flavonoids. This work provides a basis for the elucidation of the molecular mechanisms involved in the metabolic and transcriptional regulatory networks in response to combined low glutathione content with mild oxidative and nutrient stress in A. thaliana.
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Affiliation(s)
| | - Mami Iwasa
- RIKEN Center for Sustainable Resource ScienceYokohama, Japan
- Nissan Chemical Industries, Ltd.Funabashi, Japan
| | - Ryo Nakabayashi
- RIKEN Center for Sustainable Resource ScienceYokohama, Japan
| | | | | | - Yozo Okazaki
- RIKEN Center for Sustainable Resource ScienceYokohama, Japan
| | - Kazuki Saito
- RIKEN Center for Sustainable Resource ScienceYokohama, Japan
- Graduate School of Pharmaceutical Sciences, Chiba UniversityChiba, Japan
| | - Miyako Kusano
- RIKEN Center for Sustainable Resource ScienceYokohama, Japan
- Graduate School of Life and Environmental Sciences, University of TsukubaTsukuba, Japan
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146
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Kumar R, Bohra A, Pandey AK, Pandey MK, Kumar A. Metabolomics for Plant Improvement: Status and Prospects. FRONTIERS IN PLANT SCIENCE 2017; 8:1302. [PMID: 28824660 PMCID: PMC5545584 DOI: 10.3389/fpls.2017.01302] [Citation(s) in RCA: 122] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 07/11/2017] [Indexed: 05/12/2023]
Abstract
Post-genomics era has witnessed the development of cutting-edge technologies that have offered cost-efficient and high-throughput ways for molecular characterization of the function of a cell or organism. Large-scale metabolite profiling assays have allowed researchers to access the global data sets of metabolites and the corresponding metabolic pathways in an unprecedented way. Recent efforts in metabolomics have been directed to improve the quality along with a major focus on yield related traits. Importantly, an integration of metabolomics with other approaches such as quantitative genetics, transcriptomics and genetic modification has established its immense relevance to plant improvement. An effective combination of these modern approaches guides researchers to pinpoint the functional gene(s) and the characterization of massive metabolites, in order to prioritize the candidate genes for downstream analyses and ultimately, offering trait specific markers to improve commercially important traits. This in turn will improve the ability of a plant breeder by allowing him to make more informed decisions. Given this, the present review captures the significant leads gained in the past decade in the field of plant metabolomics accompanied by a brief discussion on the current contribution and the future scope of metabolomics to accelerate plant improvement.
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Affiliation(s)
- Rakesh Kumar
- Department of Plant Sciences, University of Hyderabad (UoH)Hyderabad, India
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)Hyderabad, India
| | - Abhishek Bohra
- Crop Improvement Division, Indian Institute of Pulses Research (IIPR)Kanpur, India
| | - Arun K. Pandey
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)Hyderabad, India
| | - Manish K. Pandey
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)Hyderabad, India
| | - Anirudh Kumar
- Department of Botany, Indira Gandhi National Tribal University (IGNTU)Amarkantak, India
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147
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Crisp PA, Ganguly DR, Smith AB, Murray KD, Estavillo GM, Searle I, Ford E, Bogdanović O, Lister R, Borevitz JO, Eichten SR, Pogson BJ. Rapid Recovery Gene Downregulation during Excess-Light Stress and Recovery in Arabidopsis. THE PLANT CELL 2017; 29:1836-1863. [PMID: 28705956 PMCID: PMC5590493 DOI: 10.1105/tpc.16.00828] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 06/22/2017] [Accepted: 07/11/2017] [Indexed: 05/19/2023]
Abstract
Stress recovery may prove to be a promising approach to increase plant performance and, theoretically, mRNA instability may facilitate faster recovery. Transcriptome (RNA-seq, qPCR, sRNA-seq, and PARE) and methylome profiling during repeated excess-light stress and recovery was performed at intervals as short as 3 min. We demonstrate that 87% of the stress-upregulated mRNAs analyzed exhibit very rapid recovery. For instance, HSP101 abundance declined 2-fold every 5.1 min. We term this phenomenon rapid recovery gene downregulation (RRGD), whereby mRNA abundance rapidly decreases promoting transcriptome resetting. Decay constants (k) were modeled using two strategies, linear and nonlinear least squares regressions, with the latter accounting for both transcription and degradation. This revealed extremely short half-lives ranging from 2.7 to 60.0 min for 222 genes. Ribosome footprinting using degradome data demonstrated RRGD loci undergo cotranslational decay and identified changes in the ribosome stalling index during stress and recovery. However, small RNAs and 5'-3' RNA decay were not essential for recovery of the transcripts examined, nor were any of the six excess light-associated methylome changes. We observed recovery-specific gene expression networks upon return to favorable conditions and six transcriptional memory types. In summary, rapid transcriptome resetting is reported in the context of active recovery and cellular memory.
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Affiliation(s)
- Peter A Crisp
- Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University Canberra, Acton ACT 0200, Australia
- Department of Plant and Microbial Biology, University of Minnesota, Saint Paul, Minnesota 55108
| | - Diep R Ganguly
- Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University Canberra, Acton ACT 0200, Australia
| | - Aaron B Smith
- Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University Canberra, Acton ACT 0200, Australia
| | - Kevin D Murray
- Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University Canberra, Acton ACT 0200, Australia
| | - Gonzalo M Estavillo
- Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University Canberra, Acton ACT 0200, Australia
- CSIRO Agriculture and Food, Black Mountain, Canberra ACT 2601, Australia
| | - Iain Searle
- School of Biological Sciences, The University of Adelaide, SA 5005, Australia
| | - Ethan Ford
- Australian Research Council Centre of Excellence in Plant Energy Biology, The University of Western Australia, Perth WA 6009, Australia
| | - Ozren Bogdanović
- Australian Research Council Centre of Excellence in Plant Energy Biology, The University of Western Australia, Perth WA 6009, Australia
- Harry Perkins Institute of Medical Research, Perth WA 6009, Australia
| | - Ryan Lister
- Australian Research Council Centre of Excellence in Plant Energy Biology, The University of Western Australia, Perth WA 6009, Australia
- Harry Perkins Institute of Medical Research, Perth WA 6009, Australia
| | - Justin O Borevitz
- Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University Canberra, Acton ACT 0200, Australia
| | - Steven R Eichten
- Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University Canberra, Acton ACT 0200, Australia
| | - Barry J Pogson
- Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University Canberra, Acton ACT 0200, Australia
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148
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Gonzalez LE, Keller K, Chan KX, Gessel MM, Thines BC. Transcriptome analysis uncovers Arabidopsis F-BOX STRESS INDUCED 1 as a regulator of jasmonic acid and abscisic acid stress gene expression. BMC Genomics 2017; 18:533. [PMID: 28716048 PMCID: PMC5512810 DOI: 10.1186/s12864-017-3864-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 06/15/2017] [Indexed: 01/14/2023] Open
Abstract
Background The ubiquitin 26S proteasome system (UPS) selectively degrades cellular proteins, which results in physiological changes to eukaryotic cells. F-box proteins are substrate adaptors within the UPS and are responsible for the diversity of potential protein targets. Plant genomes are enriched in F-box genes, but the vast majority of these have unknown roles. This work investigated the Arabidopsis F-box gene F-BOX STRESS INDUCED 1 (FBS1) for its effects on gene expression in order elucidate its previously unknown biological function. Results Using publically available Affymetrix ATH1 microarray data, we show that FBS1 is significantly co-expressed in abiotic stresses with other well-characterized stress response genes, including important stress-related transcriptional regulators. This gene suite is most highly expressed in roots under cold and salt stresses. Transcriptome analysis of fbs1–1 knock-out plants grown at a chilling temperature shows that hundreds of genes require FBS1 for appropriate expression, and that these genes are enriched in those having roles in both abiotic and biotic stress responses. Based on both this genome-wide expression data set and quantitative real-time PCR (qPCR) analysis, it is apparent that FBS1 is required for elevated expression of many jasmonic acid (JA) genes that have established roles in combatting environmental stresses, and that it also controls a subset of JA biosynthesis genes. FBS1 also significantly impacts abscisic acid (ABA) regulated genes, but this interaction is more complex, as FBS1 has both positive and negative effects on ABA-inducible and ABA-repressible gene modules. One noteworthy effect of FBS1 on ABA-related stress processes, however, is the restraint it imposes on the expression of multiple class I LIPID TRANSFER PROTEIN (LTP) gene family members that have demonstrated protective effects in water deficit-related stresses. Conclusion FBS1 impacts plant stress responses by regulating hundreds of genes that respond to the plant stress hormones JA and ABA. The positive effect that FBS1 has on JA processes and the negative effect it has on at least some ABA processes indicates that it in part regulates cellular responses balanced between these two important stress hormones. More broadly then, FBS1 may aid plant cells in switching between certain biotic (JA) and abiotic (ABA) stress responses. Finally, because FBS1 regulates a subset of JA biosynthesis and response genes, we conclude that it might have a role in tuning hormone responses to particular circumstances at the transcriptional level. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3864-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lauren E Gonzalez
- Keck Science Department, Claremont McKenna, Pitzer, and Scripps Colleges, Claremont, CA, 91711, USA.,Present address: Department of Genetics, Yale University School of Medicine, New Haven, CT, 06510, USA
| | - Kristen Keller
- Keck Science Department, Claremont McKenna, Pitzer, and Scripps Colleges, Claremont, CA, 91711, USA.,Present address: Department of Biostatistics, UCLA Fielding School of Public Health, Los Angeles, CA, 90095, USA
| | - Karen X Chan
- Keck Science Department, Claremont McKenna, Pitzer, and Scripps Colleges, Claremont, CA, 91711, USA
| | - Megan M Gessel
- Chemistry Department, University of Puget Sound, Tacoma, WA, 98416, USA
| | - Bryan C Thines
- Biology Department, University of Puget Sound, Tacoma, WA, 98416, USA.
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149
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Yin M, Wang Y, Zhang L, Li J, Quan W, Yang L, Wang Q, Chan Z. The Arabidopsis Cys2/His2 zinc finger transcription factor ZAT18 is a positive regulator of plant tolerance to drought stress. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:2991-3005. [PMID: 28586434 PMCID: PMC5853917 DOI: 10.1093/jxb/erx157] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Environmental stress poses a global threat to plant growth and reproduction, especially drought stress. Zinc finger proteins comprise a family of transcription factors that play essential roles in response to various abiotic stresses. Here, we found that ZAT18 (At3g53600), a nuclear C2H2 zinc finger protein, was transcriptionally induced by dehydration stress. Overexpression (OE) of ZAT18 in Arabidopsis improved drought tolerance while mutation of ZAT18 resulted in decreased plant tolerance to drought stress. ZAT18 was preferentially expressed in stems, siliques, and vegetative rosette leaves. Subcellular location results revealed that ZAT18 protein was predominantly localized in the nucleus. ZAT18 OE plants exhibited less leaf water loss, lower content of reactive oxygen species (ROS), higher leaf water content, and higher antioxidant enzyme activities after drought treatment when compared with the wild type (WT). RNA sequencing analysis showed that 423 and 561 genes were transcriptionally modulated by the ZAT18 transgene before and after drought treatment, respectively. Pathway enrichment analysis indicated that hormone metabolism, stress, and signaling were over-represented in ZAT18 OE lines. Several stress-responsive genes including COR47, ERD7, LEA6, and RAS1, and hormone signaling transduction-related genes including JAZ7 and PYL5 were identified as putative target genes of ZAT18. Taken together, ZAT18 functions as a positive regulator and plays a crucial role in the plant response to drought stress.
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Affiliation(s)
- Mingzhu Yin
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden/Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yanping Wang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Lihua Zhang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden/Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, Hubei, China
| | - Jinzhu Li
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden/Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Wenli Quan
- Key Laboratory for Quality Control of Characteristic Fruits and Vegetables of Hubei Province, College of Life Science and Technology, Hubei Engineering University, Xiaogan, Hubei, China
| | - Li Yang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden/Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, Hubei, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Qingfeng Wang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden/Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan, Hubei, China
- Correspondence: or
| | - Zhulong Chan
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, Hubei, China
- Key Laboratory for Quality Control of Characteristic Fruits and Vegetables of Hubei Province, College of Life Science and Technology, Hubei Engineering University, Xiaogan, Hubei, China
- Correspondence: or
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150
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Song L, Huang SSC, Wise A, Castanon R, Nery JR, Chen H, Watanabe M, Thomas J, Bar-Joseph Z, Ecker JR. A transcription factor hierarchy defines an environmental stress response network. Science 2017; 354:354/6312/aag1550. [PMID: 27811239 PMCID: PMC5217750 DOI: 10.1126/science.aag1550] [Citation(s) in RCA: 309] [Impact Index Per Article: 44.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 09/28/2016] [Indexed: 12/17/2022]
Abstract
Environmental stresses are universally encountered by microbes, plants, and animals. Yet systematic studies of stress-responsive transcription factor (TF) networks in multicellular organisms have been limited. The phytohormone abscisic acid (ABA) influences the expression of thousands of genes, allowing us to characterize complex stress-responsive regulatory networks. Using chromatin immunoprecipitation sequencing, we identified genome-wide targets of 21 ABA-related TFs to construct a comprehensive regulatory network in Arabidopsis thaliana Determinants of dynamic TF binding and a hierarchy among TFs were defined, illuminating the relationship between differential gene expression patterns and ABA pathway feedback regulation. By extrapolating regulatory characteristics of observed canonical ABA pathway components, we identified a new family of transcriptional regulators modulating ABA and salt responsiveness and demonstrated their utility to modulate plant resilience to osmotic stress.
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Affiliation(s)
- Liang Song
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Shao-Shan Carol Huang
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Aaron Wise
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Rosa Castanon
- Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Joseph R Nery
- Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Huaming Chen
- Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Marina Watanabe
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Jerushah Thomas
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Ziv Bar-Joseph
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Joseph R Ecker
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA. .,Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.,Howard Hughes Medical Institute (HHMI), Salk Institute for Biological Studies, La Jolla, CA 92037, USA
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