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Sharma V, Sharma DP, Salwan R. Surviving the stress: Understanding the molecular basis of plant adaptations and uncovering the role of mycorrhizal association in plant abiotic stresses. Microb Pathog 2024; 193:106772. [PMID: 38969183 DOI: 10.1016/j.micpath.2024.106772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/28/2024] [Accepted: 06/30/2024] [Indexed: 07/07/2024]
Abstract
Environmental stresses severely impair plant growth, resulting in significant crop yield and quality loss. Among various abiotic factors, salt and drought stresses are one of the major factors that affect the nutrients and water uptake by the plants, hence ultimately various physiological aspects of the plants that compromises crop yield. Continuous efforts have been made to investigate, dissect and improve plant adaptations at the molecular level in response to drought and salinity stresses. In this context, the plant beneficial microbiome presents in the rhizosphere, endosphere, and phyllosphere, also referred as second genomes of the plant is well known for its roles in plant adaptations. Exploration of beneficial interaction of fungi with host plants known as mycorrhizal association is one such special interaction that can facilitates the host plants adaptations. Mycorrhiza assist in alleviating the salinity and drought stresses of plants via redistributing the ion imbalance through translocation to different parts of the plants, as well as triggering oxidative machinery. Mycorrhiza association also regulates the level of various plant growth regulators, osmolytes and assists in acquiring minerals that are helpful in plant's adaptation against extreme environmental stresses. The current review examines the role of various plant growth regulators and plants' antioxidative systems, followed by mycorrhizal association during drought and salt stresses.
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Affiliation(s)
- Vivek Sharma
- University Centre for Research and Development, Chandigarh University, Gharuan, Mohali PB 140413, India.
| | - D P Sharma
- College of Horticulture and Forestry (Dr. YS Parmar University of Horticulture and Forestry), Neri, Hamirpur, H.P 177 001, India
| | - Richa Salwan
- College of Horticulture and Forestry (Dr. YS Parmar University of Horticulture and Forestry), Neri, Hamirpur, H.P 177 001, India.
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2
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Yu G, Chen D, Ye M, Wu X, Zhu Z, Shen Y, Mehareb EM, Esh A, Raza G, Wang K, Wang Q, Jin JB. H3K27 demethylase SsJMJ4 negatively regulates drought-stress responses in sugarcane. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:3040-3053. [PMID: 38310636 DOI: 10.1093/jxb/erae037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 02/02/2024] [Indexed: 02/06/2024]
Abstract
Sugarcane (Saccharum spp.), a leading sugar and energy crop, is seriously impacted by drought stress. However, the molecular mechanisms underlying sugarcane drought resistance, especially the functions of epigenetic regulators, remain elusive. Here, we show that a S. spontaneum KDM4/JHDM3 group JmjC protein, SsJMJ4, negatively regulates drought-stress responses through its H3K27me3 demethylase activity. Ectopic overexpression of SsJMJ4 in Arabidopsis reduced drought resistance possibly by promoting expression of AtWRKY54 and AtWRKY70, encoding two negative regulators of drought stress. SsJMJ4 directly bound to AtWRKY54 and AtWRKY70, and reduced H3K27me3 levels at these loci to ensure their proper transcription under normal conditions. Drought stress down-regulated both transcription and protein abundance of SsJMJ4, which was correlated with the reduced occupancy of SsJMJ4 at AtWRKY54 and AtWRKY70 chromatin, increased H3K27me3 levels at these loci, as well as reduced transcription levels of these genes. In S. spontaneum, drought stress-repressed transcription of SsWRKY122, an ortholog of AtWRKY54 and AtWRKY70, was associated with increased H3K27me3 levels at these loci. Transient overexpression of SsJMJ4 in S. spontaneum protoplasts raised transcription of SsWRKY122, paralleled with reduced H3K27me3 levels at its loci. These results suggest that the SsJMJ4-mediated dynamic deposition of H3K27me3 is required for an appropriate response to drought stress.
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Affiliation(s)
- Guangrun Yu
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
- School of Life Sciences, Nantong University, Nantong 226019, China
| | - Daoqian Chen
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Meiling Ye
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Xiaoge Wu
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Zhiying Zhu
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Yan Shen
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Eid M Mehareb
- Sugar Crops Research Institute, Agricultural Research Center, Giza 12619, Egypt
| | - Ayman Esh
- Sugar Crops Research Institute, Agricultural Research Center, Giza 12619, Egypt
| | - Ghulam Raza
- National Institute for Biotechnology and Genetic Engineering, Faisalabad, 38000, Pakistan
| | - Kai Wang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
- School of Life Sciences, Nantong University, Nantong 226019, China
| | - Qiongli Wang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Jing Bo Jin
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, China
- China National Botanical Garden, Beijing, China
- University of the Chinese Academy of Sciences, Beijing, China
- Academician Workstation of Agricultural High-tech Industrial Area of the Yellow River Delta, National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying, Shandong, China
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Mano NA, Shaikh MA, Widhalm JR, Yoo CY, Mickelbart MV. Transcriptional repression of GTL1 under water-deficit stress promotes anthocyanin biosynthesis to enhance drought tolerance. PLANT DIRECT 2024; 8:e594. [PMID: 38799417 PMCID: PMC11117050 DOI: 10.1002/pld3.594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 04/29/2024] [Indexed: 05/29/2024]
Abstract
The transcription factor GT2-LIKE 1 (GTL1) has been implicated in orchestrating a transcriptional network of diverse physiological, biochemical, and developmental processes. In response to water-limiting conditions, GTL1 is a negative regulator of stomatal development, but its potential rolein other water-deficit responses is unknown. We hypothesized that GTL1 regulates transcriptome changes associated with drought tolerance over leaf developmental stages. To test the hypothesis, gene expression was profiled by RNA-seq analysis in emerging and expanding leaves of wild-type and a drought-tolerant gtl1-4 knockout mutant under well-watered and water-deficit conditions. Our comparative analysis of genotype-treatment combinations within leaf developmental age identified 459 and 1073 differentially expressed genes in emerging and expanding leaves, respectively, as water-deficit responsive GTL1-regulated genes. Transcriptional profiling identified a potential role of GTL1 in two important pathways previously linked to drought tolerance: flavonoid and polyamine biosynthesis. In expanding leaves, negative regulation of GTL1 under water-deficit conditions promotes biosynthesis of flavonoids and anthocyanins that may contribute to drought tolerance. Quantification of polyamines did not support a role for GTL1 in these drought-responsive pathways, but this is likely due to the complex nature of polyamine synthesis and turnover. Our global transcriptome analysis suggests that transcriptional repression of GTL1 by water deficit allows plants to activate diverse pathways that collectively contribute to drought tolerance.
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Affiliation(s)
- Noel Anthony Mano
- Department of Botany and Plant PathologyPurdue UniversityWest LafayetteIndianaUSA
- Center for Plant BiologyPurdue UniversityWest LafayetteIndianaUSA
- Department of Biological and Environmental SciencesHeidelberg UniversityTiffinOhioUSA
- Present address:
School of Biological SciencesThe University of UtahSalt Lake CityUtahUSA
| | - Mearaj A. Shaikh
- Center for Plant BiologyPurdue UniversityWest LafayetteIndianaUSA
- Department of Horticulture and Landscape ArchitecturePurdue UniversityWest LafayetteIndianaUSA
| | - Joshua R. Widhalm
- Center for Plant BiologyPurdue UniversityWest LafayetteIndianaUSA
- Department of Horticulture and Landscape ArchitecturePurdue UniversityWest LafayetteIndianaUSA
| | - Chan Yul Yoo
- Present address:
School of Biological SciencesThe University of UtahSalt Lake CityUtahUSA
| | - Michael V. Mickelbart
- Department of Botany and Plant PathologyPurdue UniversityWest LafayetteIndianaUSA
- Center for Plant BiologyPurdue UniversityWest LafayetteIndianaUSA
- Department of Horticulture and Landscape ArchitecturePurdue UniversityWest LafayetteIndianaUSA
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Peng H, Guo D, Peng H, Guo H, Wang H, Wang Y, Xu B, Gao A, Liu Z, Guo X. The gene AccCyclin H mitigates oxidative stress by influencing trehalose metabolism in Apis cerana cerana. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:225-234. [PMID: 37549225 DOI: 10.1002/jsfa.12900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/11/2023] [Accepted: 08/07/2023] [Indexed: 08/09/2023]
Abstract
BACKGROUND Environmental stress can induce oxidative stress in Apis cerana cerana, leading to cellular oxidative damage, reduced vitality, and even death. Currently, owing to an incomplete understanding of the molecular mechanisms by which A. cerana cerana resists oxidative damage, there is no available method to mitigate the risk of this type of damage. Cyclin plays an important role in cell stress resistance. The aim of this study was to explore the in vivo protection of cyclin H against oxidative damage induced by abiotic stress in A. cerana cerana and clarify the mechanism of action. We isolated and identified the AccCyclin H gene in A. cerana cerana and analysed its responses to different exogenous stresses. RESULTS The results showed that different oxidative stressors can induce or inhibit the expression of AccCyclin H. After RNA-interference-mediated AccCyclin H silencing, the activity of antioxidant-related genes and related enzymes was inhibited, and trehalose metabolism was reduced. AccCyclin H gene silencing reduced A. cerana cerana high-temperature tolerance. Exogenous trehalose supplementation enhanced the total antioxidant capacity of A. cerana cerana, reduced the accumulation of oxidants, and improved the viability of A. cerana cerana under high-temperature stress. CONCLUSION Our findings suggest that trehalose can alleviate adverse stress and that AccCyclin H may participate in oxidative stress reactions by regulating trehalose metabolism. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Hongyan Peng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, PR China
| | - Dezheng Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, PR China
| | - Hongmei Peng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, PR China
| | - Hengjun Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, PR China
| | - Hongfang Wang
- Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Shandong Agricultural University, Taian, PR China
| | - Ying Wang
- Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Shandong Agricultural University, Taian, PR China
| | - Baohua Xu
- Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Shandong Agricultural University, Taian, PR China
| | - Aiying Gao
- Taian Institute for Food and Drug Control (Taian Fiber Inspection Institute), Taian, PR China
| | - Zhenguo Liu
- Key Laboratory of Efficient Utilization of Non-grain Feed Resources (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Shandong Agricultural University, Taian, PR China
| | - Xingqi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, PR China
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Wang W, Liu W, Wang B. Identification of CDK gene family and functional analysis of CqCDK15 under drought and salt stress in quinoa. BMC Genomics 2023; 24:461. [PMID: 37592203 PMCID: PMC10433607 DOI: 10.1186/s12864-023-09570-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 08/09/2023] [Indexed: 08/19/2023] Open
Abstract
as one of the oldest cultivated crops in the world, quinoa has been widely valued for its rich nutritional value and green health. In this study, 22 CDK genes (CqCDK01-CqCDK22) were identified from quinoa genome using bioinformatics method. The number of amino acids was 173-811, the molecular weight was 19,554.89 Da-91,375.70 Da, and the isoelectric point was 4.57-9.77. The phylogenetic tree divided 21 CqCDK genes into six subfamilies, the gene structure showed that 12 (54.5%) CqCDK genes (CqCDK03, CqCDK04, CqCDK05, CqCDK06, CqCDK07, CqCDK11, CqCDK14, CqCDK16, CqCDK18, CqCDK19, CqCDK20 and CqCDK21) had UTR regions at 5' and 3' ends. Each CDK protein had different motifs (3-9 motifs), but the genes with the same motifs were located in the same branch. Promoter analysis revealed 41 cis-regulatory elements related to plant hormones, abiotic stresses, tissue-specific expression and photoresponse. The results of real-time fluorescence quantitative analysis showed that the expression level of some CDK genes was higher under drought and salt stress, which indicated that CDK genes could help plants to resist adverse environmental effects. Subcellular localization showed that CqCDK15 gene was localized to the nucleus and cytoplasm, and transgenic plants overexpressing CqCDK15 gene showed higher drought and salt tolerance compared to the controls. Therefore, CDK genes are closely related to quinoa stress resistance. In this study, the main functions of quinoa CDK gene family and its expression level in different tissues and organs were analyzed in detail, which provided some theoretical support for quinoa stress-resistant breeding. Meanwhile, this study has important implications for further understanding the function of the CDK gene family in quinoa and our understanding of the CDK family in vascular plant.
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Affiliation(s)
- Wangtian Wang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, 730070, China
- College of life science and technology, Gansu Agricultural University, Lanzhou, 730070, China
| | - Wenyu Liu
- Gansu Academy of Agricultural Sciences, Lanzhou, 730070, China
| | - Baoqiang Wang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, 730070, China.
- College of life science and technology, Gansu Agricultural University, Lanzhou, 730070, China.
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6
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Lehman TA, Rosas MA, Brew-Appiah RAT, Solanki S, York ZB, Dannay R, Wu Y, Roalson EH, Zheng P, Main D, Baskin TI, Sanguinet KA. BUZZ: an essential gene for postinitiation root hair growth and a mediator of root architecture in Brachypodium distachyon. THE NEW PHYTOLOGIST 2023. [PMID: 37421201 DOI: 10.1111/nph.19079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/10/2023] [Indexed: 07/10/2023]
Abstract
Here, we discover a player in root development. Recovered from a forward-genetic screen in Brachypodium distachyon, the buzz mutant initiates root hairs but they fail to elongate. In addition, buzz roots grow twice as fast as wild-type roots. Also, lateral roots show increased sensitivity to nitrate, whereas primary roots are less sensitive to nitrate. Using whole-genome resequencing, we identified the causal single nucleotide polymorphism as occurring in a conserved but previously uncharacterized cyclin-dependent kinase (CDK)-like gene. The buzz mutant phenotypes are rescued by the wild-type B. distachyon BUZZ coding sequence and by an apparent homolog in Arabidopsis thaliana. Moreover, T-DNA mutants in A. thaliana BUZZ have shorter root hairs. BUZZ mRNA localizes to epidermal cells and develops root hairs and, in the latter, partially colocalizes with the NRT1.1A nitrate transporter. Based on qPCR and RNA-Seq, buzz overexpresses ROOT HAIRLESS LIKE SIX-1 and -2 and misregulates genes related to hormone signaling, RNA processing, cytoskeletal, and cell wall organization, and to the assimilation of nitrate. Overall, these data demonstrate that BUZZ is required for tip growth after root hair initiation and root architectural responses to nitrate.
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Affiliation(s)
- Thiel A Lehman
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Miguel A Rosas
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
- Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA, 99164, USA
| | - Rhoda A T Brew-Appiah
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Shyam Solanki
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
- Department of Agronomy, Horticulture & Plant Science, South Dakota State University, Brookings, SD, 57007, USA
| | - Zara B York
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Rachel Dannay
- Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA, 99164, USA
| | - Ying Wu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
| | - Eric H Roalson
- School of Biological Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Ping Zheng
- Department of Horticulture, Washington State University, Pullman, WA, 99164, USA
| | - Dorrie Main
- Department of Horticulture, Washington State University, Pullman, WA, 99164, USA
| | - Tobias I Baskin
- Department of Biology, University of Massachusetts, Amherst, MA, 01003, USA
| | - Karen A Sanguinet
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
- Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA, 99164, USA
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Spectral light quality regulates the morphogenesis, architecture, and flowering in pepper (Capsicum annuum L.). JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2023; 241:112673. [PMID: 36889195 DOI: 10.1016/j.jphotobiol.2023.112673] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 02/19/2023] [Accepted: 02/20/2023] [Indexed: 02/26/2023]
Abstract
Transparent plastic films with poor light transmittance seriously affect the mass composition of visible light in many greenhouses, which leads to the reduction of photosynthesis in vegetable crops. Understanding the regulatory mechanisms of monochromatic light in the vegetative and reproductive growth of vegetable crops is of great importance for the application of light-emitting diodes (LEDs) in the greenhouse. In this study, three monochromatic light treatments (red-, green- and blue-light) were simulated by using LEDs to explore light quality-dependent regulation from the stage of seedling to flowering in pepper (Capsicum annuum L.). The results showed that light quality-dependent regulation guides the growth and morphogenesis in pepper plants. Red- and blue-light played opposite roles in determining the plant height, stomatal density, axillary bud growth, photosynthetic characteristics, flowering time and hormone metabolism, while green light treatment resulted in taller plants and fewer branches, which was similar to the red-light treatment. The weighted correlation network analysis (WGCNA) based on mRNA-seq results revealed that the two modules named "MEred" and "MEmidnightblue" were positively correlated with red- and blue-light treatment, respectively, exhibiting high correlations with the traits such as plant hormone content, branching and flowering. Moreover, our results suggest that the light response factor ELONGATED HYPOCOTYL 5 (HY5) is essential for blue light-induced plant growth and development by regulating photosynthesis in pepper plants. Hence, this study uncovers crucial molecular mechanisms of how light quality determines the morphogenesis, architecture, and flowering in pepper plants, thus providing a basic concept of manipulating light quality to regulate pepper plant growth and flowering under greenhouse conditions.
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Identification of a DEAD-box RNA Helicase BnRH6 Reveals Its Involvement in Salt Stress Response in Rapeseed ( Brassica napus). Int J Mol Sci 2022; 24:ijms24010002. [PMID: 36613447 PMCID: PMC9819673 DOI: 10.3390/ijms24010002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/14/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Rapeseed (Brassica napus) is one of the most important vegetable oil crops worldwide. Abiotic stresses such as salinity are great challenges for its growth and productivity. DEAD-box RNA helicase 6 (RH6) is a subfamily member of superfamily 2 (SF2), which plays crucial roles in plant growth and development. However, no report is available on RH6 in regulating plant abiotic stress response. This study investigated the function and regulatory mechanism for BnRH6. BnRH6 was targeted to the nucleus and cytoplasmic processing body (P-body), constitutively expressed throughout the lifespan, and induced by salt stress. Transgenic overexpressing BnRH6 in Brassica and Arabidopsis displayed salt hypersensitivity, manifested by lagging seed germination (decreased to 55−85% of wild-type), growth stunt, leaf chlorosis, oxidative stress, and over-accumulation of Na ions with the K+/Na+ ratio being decreased by 18.3−28.6%. Given the undesirable quality of knockout Brassica plants, we utilized an Arabidopsis T-DNA insertion mutant rh6-1 to investigate downstream genes by transcriptomics. We constructed four libraries with three biological replicates to investigate global downstream genes by RNA sequencing. Genome-wide analysis of differentially expressed genes (DEGs) (2-fold, p < 0.05) showed that 41 genes were upregulated and 66 genes were downregulated in rh6-1 relative to wild-type under salt stress. Most of them are well-identified and involved in transcription factors, ABA-responsive genes, and detoxified components or antioxidants. Our research suggests that BnRH6 can regulate a group of salt-tolerance genes to negatively promote Brassica adaptation to salt stress.
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9
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Zhao B, Shao Z, Wang L, Zhang F, Chakravarty D, Zong W, Dong J, Song L, Qiao H. MYB44-ENAP1/2 restricts HDT4 to regulate drought tolerance in Arabidopsis. PLoS Genet 2022; 18:e1010473. [PMID: 36413574 PMCID: PMC9681084 DOI: 10.1371/journal.pgen.1010473] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 10/11/2022] [Indexed: 11/23/2022] Open
Abstract
Histone acetylation has been shown to involve in stress responses. However, the detailed molecular mechanisms that how histone deacetylases and transcription factors function in drought stress response remain to be understood. In this research, we show that ENAP1 and ENAP2 are positive regulators of drought tolerance in plants, and the enap1enap2 double mutant is more sensitive to drought stress. Both ENAP1 and ENAP2 interact with MYB44, a transcription factor that interacts with histone deacetylase HDT4. Genetics data show that myb44 null mutation enhances the sensitivity of enap1enap2 to drought stress. Whereas, HDT4 negatively regulates plant drought response, the hdt4 mutant represses enap1enap2myb44 drought sensitive phenotype. In the normal condition, ENAP1/2 and MYB44 counteract the HDT4 function for the regulation of H3K27ac. Upon drought stress, the accumulation of MYB44 and reduction of HDT4 leads to the enrichment of H3K27ac and the activation of target gene expression. Overall, this research provides a novel molecular mechanism by which ENAP1, ENAP2 and MYB44 form a complex to restrict the function of HDT4 in the normal condition; under drought condition, accumulated MYB44 and reduced HDT4 lead to the elevation of H3K27ac and the expression of drought responsive genes, as a result, plants are drought tolerant.
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Affiliation(s)
- Bo Zhao
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas, United States of America
| | - Zhengyao Shao
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas, United States of America
| | - Likai Wang
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas, United States of America
| | - Fan Zhang
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas, United States of America
| | - Daveraj Chakravarty
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas, United States of America
| | - Wei Zong
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas, United States of America
| | - Juan Dong
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey, United States of America
| | - Liang Song
- Department of Botany, University of British Columbia, Vancouver, British Columbia, Canada
| | - Hong Qiao
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas, United States of America
- Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, Texas, United States of America
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10
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Smythers AL, Bhatnagar N, Ha C, Majumdar P, McConnell EW, Mohanasundaram B, Hicks LM, Pandey S. Abscisic acid-controlled redox proteome of Arabidopsis and its regulation by heterotrimeric Gβ protein. THE NEW PHYTOLOGIST 2022; 236:447-463. [PMID: 35766993 DOI: 10.1111/nph.18348] [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: 04/01/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
The plant hormone abscisic acid (ABA) plays crucial roles in regulation of stress responses and growth modulation. Heterotrimeric G-proteins are key mediators of ABA responses. Both ABA and G-proteins have also been implicated in intracellular redox regulation; however, the extent to which reversible protein oxidation manipulates ABA and/or G-protein signaling remains uncharacterized. To probe the role of reversible protein oxidation in plant stress response and its dependence on G-proteins, we determined the ABA-dependent reversible redoxome of wild-type and Gβ-protein null mutant agb1 of Arabidopsis. We quantified 6891 uniquely oxidized cysteine-containing peptides, 923 of which show significant changes in oxidation following ABA treatment. The majority of these changes required the presence of G-proteins. Divergent pathways including primary metabolism, reactive oxygen species response, translation and photosynthesis exhibited both ABA- and G-protein-dependent redox changes, many of which occurred on proteins not previously linked to them. We report the most comprehensive ABA-dependent plant redoxome and uncover a complex network of reversible oxidations that allow ABA and G-proteins to rapidly adjust cellular signaling to adapt to changing environments. Physiological validation of a subset of these observations suggests that functional G-proteins are required to maintain intracellular redox homeostasis and fully execute plant stress responses.
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Affiliation(s)
- Amanda L Smythers
- The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | | | - Chien Ha
- Donald Danforth Plant Science Center, St Louis, MO, 63132, USA
| | | | - Evan W McConnell
- The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | | | - Leslie M Hicks
- The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Sona Pandey
- Donald Danforth Plant Science Center, St Louis, MO, 63132, USA
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11
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Zhao P, Zhang C, Song Y, Xu X, Wang J, Wang J, Zheng T, Lin Y, Lai Z. Genome-wide identification, expression and functional analysis of the core cell cycle gene family during the early somatic embryogenesis of Dimocarpus longan Lour. Gene 2022; 821:146286. [PMID: 35176425 DOI: 10.1016/j.gene.2022.146286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 12/29/2021] [Accepted: 02/03/2022] [Indexed: 11/04/2022]
Abstract
Core cell cycle genes (CCCs) are essential regulators of cell cycle operation. In this study, a total of 69 CCCs family members, including 37 CYCs, 20 CDKs, five E2F/DPs, three KRPs, two RBs, one CKS and one Wee1, were identified from the longan genome. Phylogenetic and motifs analysis showed the evolutionary conservation of CCCs. Transcriptome dataset showed that CCCs had various expression patterns during longan early somatic embryogenesis (SE). Either CKS or CYCD3;2 silencing increased the expression of RB-E2F pathway genes, and the silencing of CYCD3;2 might induce the process of apoptosis in longan embryogenic callus (EC) cells. In addition, The qRT-PCR results showed that the expression levels of CDKG2, CYCD3;2, CYCT1;2, CKS and KRP1 were elevated by ABA, 2,4-D and PEG4000 treatments, while CDKG2 and CYCT1;2 were inhibited by NaCl treatment. In conclusion, our study provided valuable information for understanding the characterization and biological functions of longan CCCs.
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Affiliation(s)
- Pengcheng Zhao
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chunyu Zhang
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuyang Song
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaoqiong Xu
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jinyi Wang
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jinhao Wang
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Tianyi Zheng
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuling Lin
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Zhongxiong Lai
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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12
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Wang Q, Liu P, Jing H, Zhou XF, Zhao B, Li Y, Jin JB. JMJ27-mediated histone H3K9 demethylation positively regulates drought-stress responses in Arabidopsis. THE NEW PHYTOLOGIST 2021; 232:221-236. [PMID: 34197643 DOI: 10.1111/nph.17593] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/24/2021] [Indexed: 06/13/2023]
Abstract
Dimethylation of histone H3 at lysine 9 (H3K9me2) is associated with heterochromatinization and transcriptional gene silencing in plants. The activation of sets of genes by drought stress is correlated with reduced H3K9me2 levels, but the role of H3K9 methylation in the regulation of drought-stress responses remains elusive. Here, we show that the Jumonji domain-containing H3K9 demethylase JMJ27 positively regulates drought-stress responses through its histone demethylase activity. RNA-seq analysis identified JMJ27-regulated genes, including positive regulators of drought stress GALACTINOL SYNTHASE 2 (GOLS2) and RESPONSE TO DESICCATION 20 (RD20). Genetic analysis demonstrated that JMJ27 positively regulates drought-stress responses at least partly through GOLS2 and RD20. JMJ27 directly associated with GOLS2 and RD20, and protected these loci from silencing by reducing H3K9me2 levels under normal conditions. REGULATORY PARTICLE NON-ATPASE 1a (RPN1a), a subunit of the 26S proteasome, interacted with JMJ27 and negatively regulated JMJ27 accumulation. Drought stress diminished RPN1a abundance, resulting in increased JMJ27 abundance. The drought stress-promoted occupancy of JMJ27 at GOLS2 and RD20 chromatin may reinforce their transcriptional induction by locally reducing the H3K9me2 levels. These results indicate that the RPN1a-JMJ27 module precisely regulates dynamic H3K9me2 deposition plasticity, ensuring proper adaptation to drought stress in Arabidopsis.
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Affiliation(s)
- Qiongli Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Peng Liu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Hua Jing
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiao Feng Zhou
- Department of Ornamental Horticulture, China Agricultural University, Beijing, 100193, China
| | - Bo Zhao
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Yuan Li
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Jing Bo Jin
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of the Chinese Academy of Sciences, Beijing, 100049, China
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13
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Plant CDKs-Driving the Cell Cycle through Climate Change. PLANTS 2021; 10:plants10091804. [PMID: 34579337 PMCID: PMC8468384 DOI: 10.3390/plants10091804] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/03/2021] [Accepted: 08/23/2021] [Indexed: 02/06/2023]
Abstract
In a growing population, producing enough food has become a challenge in the face of the dramatic increase in climate change. Plants, during their evolution as sessile organisms, developed countless mechanisms to better adapt to the environment and its fluctuations. One important way is through the plasticity of their body and their forms, which are modulated during plant growth by accurate control of cell divisions. A family of serine/threonine kinases called cyclin-dependent kinases (CDK) is a key regulator of cell divisions by controlling cell cycle progression. In this review, we compile information on the primary response of plants in the regulation of the cell cycle in response to environmental stresses and show how the cell cycle proteins (mainly the cyclin-dependent kinases) involved in this regulation can act as components of environmental response signaling cascades, triggering adaptive responses to drive the cycle through climate fluctuations. Understanding the roles of CDKs and their regulators in the face of adversity may be crucial to meeting the challenge of increasing agricultural productivity in a new climate.
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14
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Cia MC, de Carvalho G, Azevedo RA, Monteiro-Vitorello CB, Souza GM, Nishiyama-Junior MY, Lembke CG, Antunes de Faria RSDC, Marques JPR, Melotto M, Camargo LEA. Novel Insights Into the Early Stages of Ratoon Stunting Disease of Sugarcane Inferred from Transcript and Protein Analysis. PHYTOPATHOLOGY 2018; 108:1455-1466. [PMID: 29969065 DOI: 10.1094/phyto-04-18-0120-r] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Despite of the importance of ratoon stunting disease, little is known on the responses of sugarcane to its causal agent, the vascular bacterial endophyte Leifsonia xyli subsp. xyli. The transcriptome and proteome of young plants of a susceptible cultivar with no symptoms of stunting but with relative low and high bacterial titers were compared at 30 and 60 days after inoculation. Increased bacterial titers were associated with alterations in the expression of 267 cDNAs and in the abundance of 150 proteins involved in plant growth, hormone metabolism, signal transduction and defense responses. Some alterations are predicted to benefit the pathogen, such as the up-regulation of genes involved in the synthesis of methionine. Also, genes and proteins of the cell division cycle were all down-regulated in plants with higher titers at both times. It is hypothesized that the negative effects on cell division related to increased bacterial titers is cumulative over time and its modulation by other host and environmental factors results in the stunting symptom.
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Affiliation(s)
- Mariana Cicarelli Cia
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
| | - Giselle de Carvalho
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
| | - Ricardo Antunes Azevedo
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
| | - Claudia Barros Monteiro-Vitorello
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
| | - Glaucia Mendes Souza
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
| | - Milton Yutaka Nishiyama-Junior
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
| | - Carolina Gimiliani Lembke
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
| | - Raphael Severo da Cunha Antunes de Faria
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
| | - João Paulo Rodrigues Marques
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
| | - Maeli Melotto
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
| | - Luis Eduardo Aranha Camargo
- First, second, third, fourth, eighth, ninth, and eleventh authors: Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; fifth and seventh authors: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900, São Paulo, SP, Brazil; sixth author: Instituto Butantan, Laboratório Especial de Toxinologia Aplicada, Av. Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil; and tenth author: Department of Plant Sciences, University of California, Davis 95616
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15
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Magwanga RO, Lu P, Kirungu JN, Cai X, Zhou Z, Wang X, Diouf L, Xu Y, Hou Y, Hu Y, Dong Q, Wang K, Liu F. Whole Genome Analysis of Cyclin Dependent Kinase ( CDK) Gene Family in Cotton and Functional Evaluation of the Role of CDKF4 Gene in Drought and Salt Stress Tolerance in Plants. Int J Mol Sci 2018; 19:ijms19092625. [PMID: 30189594 PMCID: PMC6164816 DOI: 10.3390/ijms19092625] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 08/24/2018] [Accepted: 08/29/2018] [Indexed: 12/12/2022] Open
Abstract
Cotton (Gossypium spp.) is the number one crop cultivated for fiber production and the cornerstone of the textile industry. Drought and salt stress are the major abiotic stresses, which can have a huge economic impact on cotton production; this has been aggravated with continued climate change, and compounded by pollution. Various survival strategies evolved by plants include the induction of various stress responsive genes, such as cyclin dependent kinases (CDKs). In this study, we performed a whole-genome identification and analysis of the CDK gene family in cotton. We identified 31, 12, and 15 CDK genes in G. hirsutum, G. arboreum, and G. raimondii respectively, and they were classified into 6 groups. CDK genes were distributed in 15, 10, and 9 linkage groups of AD, D, and A genomes, respectively. Evolutionary analysis revealed that segmental types of gene duplication were the primary force underlying CDK genes expansion. RNA sequence and RT-qPCR validation revealed that Gh_D12G2017 (CDKF4) was strongly induced by drought and salt stresses. The transient expression of Gh_D12G2017-GFP fusion protein in the protoplast showed that Gh_D12G2017 was localized in the nucleus. The transgenic Arabidopsis lines exhibited higher concentration levels of the antioxidant enzymes measured, including peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT) concentrations under drought and salt stress conditions with very low levels of oxidants. Moreover, cell membrane stability (CMS), excised leaf water loss (ELWL), saturated leaf weight (SLW), and chlorophyll content measurements showed that the transgenic Arabidopsis lines were highly tolerant to either of the stress factors compared to their wild types. Moreover, the expression of the stress-related genes was also significantly up-regulated in Gh_D12G2017(CDKF4) transgenic Arabidopsis plants under drought and salt conditions. We infer that CDKF-4s and CDKG-2s might be the primary regulators of salt and drought responses in cotton.
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Affiliation(s)
- Richard Odongo Magwanga
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
- School of Biological and Physical sciences (SBPS), Main campus, Jaramogi Oginga Odinga University of Science and Technology (JOOUST), P.O Box 210-40601, Bondo, Kenya.
| | - Pu Lu
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Joy Nyangasi Kirungu
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Xiaoyan Cai
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Zhongli Zhou
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Xingxing Wang
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Latyr Diouf
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Yanchao Xu
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Yuqing Hou
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Yangguang Hu
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Qi Dong
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Kunbo Wang
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
| | - Fang Liu
- Research Base in Anyang Institute of Technology, State Key Laboratory of Cotton Biology/Institute of Cotton Research, Chinese Academy of Agricultural Science (ICR, CAAS), Anyang 455000, China.
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16
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Hu L, Xie Y, Fan S, Wang Z, Wang F, Zhang B, Li H, Song J, Kong L. Comparative analysis of root transcriptome profiles between drought-tolerant and susceptible wheat genotypes in response to water stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 272:276-293. [PMID: 29807601 DOI: 10.1016/j.plantsci.2018.03.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 03/13/2018] [Accepted: 03/20/2018] [Indexed: 05/13/2023]
Abstract
Water deficit is one of the major factors limiting crop productivity worldwide. Plant roots play a key role in uptaking water, perceiving and transducing of water deficit signals to shoot. Although the mechanisms of drought-tolerance have been reported recently, the transcriptional regulatory network of wheat root response to water stress has not been fully understood. In this study, drought-tolerant cultivar JM-262 and susceptible cultivar LM-2 are planted to characterize the root transcriptional changes and physiological responses to water deficit. A total of 8197 drought tolerance-associated differentially expressed genes (DEGs) are identified, these genes are mainly mapped to carbon metabolism, flavonoid biosynthesis, and phytohormone signal transduction. The number and expression level of DEGs involved in antioxidative and antiosmotic stresses are more enhanced in JM-262 under water stress. Furthermore, we find the DEGs related to root development are much more induced in JM-262 in phytohormone signal transduction and carbon metabolism pathway. In conclusion, JM-262 may alleviate the damage of drought by producing more osmoprotectants, ROS scavengers, biomass and energy. Interestingly, hormone signaling and cross-talk probably play an important role in promoting JM-262 greater root systems to take up more water, higher capabilities to induce more drought-related DEGs and higher resisitance to oxidative stresse.
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Affiliation(s)
- Ling Hu
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Yan Xie
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Shoujin Fan
- College of Life Science, Shandong Normal University, Jinan 250014, China
| | - Zongshuai Wang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Fahong Wang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Bin Zhang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Haosheng Li
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Jie Song
- College of Life Science, Shandong Normal University, Jinan 250014, China
| | - Lingan Kong
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China.
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17
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Golestan Hashemi FS, Ismail MR, Rafii MY, Aslani F, Miah G, Muharam FM. Critical multifunctional role of the betaine aldehyde dehydrogenase gene in plants. BIOTECHNOL BIOTEC EQ 2018. [DOI: 10.1080/13102818.2018.1478748] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Affiliation(s)
- Farahnaz Sadat Golestan Hashemi
- Gembloux Agro-Bio Tech, University of Liege, Leige, Belgium
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd Razi Ismail
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd Y. Rafii
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Farzad Aslani
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Gous Miah
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Farah Melissa Muharam
- Department of Agricultural Technology, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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18
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Shi Y, Yue X, An L. Integrated regulation triggered by a cryophyte ω-3 desaturase gene confers multiple-stress tolerance in tobacco. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:2131-2148. [PMID: 29432580 PMCID: PMC6019038 DOI: 10.1093/jxb/ery050] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 02/02/2018] [Indexed: 05/16/2023]
Abstract
ω-3 fatty acid desaturases (FADs) are thought to contribute to plant stress tolerance mainly through linolenic acid (C18:3)-induced membrane stabilization, but a comprehensive analysis of their roles in stress adaptation is lacking. Here, we isolated a microsomal ω-3 FAD gene (CbFAD3) from a cryophyte (Chorispora bungeana) and elucidated its functions in stress tolerance. CbFAD3, exhibiting a high identity to Arabidopsis AtFAD3, was up-regulated by abiotic stresses. Its functionality was verified by heterogonous expression in yeast. Overexpression of CbFAD3 in tobacco constitutively increased C18:3 in both leaves and roots, which maintained the membrane fluidity, and enhanced plant tolerance to cold, drought, and salt stresses. Notably, the constitutively increased C18:3 induced a sustained activation of plasma membrane Ca2+-ATPase, thereby, changing the stress-induced Ca2+ signaling. The reactive oxygen species (ROS) scavenging system, which was positively correlated with the level of C18:3, was also activated in the transgenic lines. Microarray analysis showed that CbFAD3-overexpressing plants increased the expression of stress-responsive genes, most of which are affected by C18:3, Ca2+, or ROS. Together, CbFAD3 confers tolerance to multiple stresses in tobacco through the C18:3-induced integrated regulation of membrane, Ca2+, ROS, and stress-responsive genes. This is in contrast with previous observations that simply attribute stress tolerance to membrane stabilization.
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Affiliation(s)
- Yulan Shi
- Extreme Stress Resistance and Biotechnology Laboratory, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, PR China
| | - Xiule Yue
- School of Life Sciences, Lanzhou University, Lanzhou, PR China
| | - Lizhe An
- Extreme Stress Resistance and Biotechnology Laboratory, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, PR China
- School of Life Sciences, Lanzhou University, Lanzhou, PR China
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19
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Atabekova AK, Lazareva EA, Strelkova OS, Solovyev AG, Morozov SY. Mechanical stress-induced subcellular re-localization of N-terminally truncated tobacco Nt-4/1 protein. Biochimie 2018; 144:98-107. [PMID: 29097279 DOI: 10.1016/j.biochi.2017.10.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 10/25/2017] [Indexed: 01/22/2023]
Abstract
The Nicotiana tabacum 4/1 protein (Nt-4/1) of unknown function expressed in plant vasculature has been shown to localize to cytoplasmic bodies associated with endoplasmic reticulum. Here, we analyzed molecular interactions of an Nt-4/1 mutant with a deletion of 90 N-terminal amino acid residues (Nt-4/1d90) having a diffuse GFP-like localization. Upon transient co-expression with VAP27, a membrane protein known to localize to the ER, ER-plasma membrane contact sites and plasmodesmata, Nt-4/1d90 was concentrated around the cortical ER tubules, forming a network matching the shape of the cortical ER. Additionally, in response to mechanical stress, Nt-4/1d90 was re-localized to small spherical bodies, whereas the subcellular localization of VAP27 remained essentially unaffected. The Nt-4/1d90-containing bodies associated with microtubules, which underwent noticeable bundling under the conditions of mechanical stress. The Nt-4/1d90 re-localization to spherical bodies could also be induced by incubation at an elevated temperature, although under heat shock conditions the re-localization was less efficient and incomplete. An Nt-4/1d90 mutant, which had phosphorylation-mimicking mutations in a predicted cluster of four potentially phosphorylated residues, was found to both inefficiently re-localize to spherical bodies and tend to revert back to the initial diffuse localization. The presented data show that Nt-4/1 has a potential for response to stresses that is manifested by its deletion mutant Nt-4/1d90, and this response can be mediated by protein dephosphorylation.
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Affiliation(s)
- Anastasia K Atabekova
- Department of Virology, Biological Faculty, Moscow State University, Moscow 119234, Russia
| | - Ekaterina A Lazareva
- Department of Virology, Biological Faculty, Moscow State University, Moscow 119234, Russia
| | - Olga S Strelkova
- Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow 119992, Russia
| | - Andrey G Solovyev
- Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow 119992, Russia; Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Moscow 119991, Russia
| | - Sergey Y Morozov
- Department of Virology, Biological Faculty, Moscow State University, Moscow 119234, Russia; Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow 119992, Russia.
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20
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Aguirre-Liguori JA, Tenaillon MI, Vázquez-Lobo A, Gaut BS, Jaramillo-Correa JP, Montes-Hernandez S, Souza V, Eguiarte LE. Connecting genomic patterns of local adaptation and niche suitability in teosintes. Mol Ecol 2017; 26:4226-4240. [PMID: 28612956 DOI: 10.1111/mec.14203] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 04/14/2017] [Accepted: 06/01/2017] [Indexed: 01/04/2023]
Abstract
The central abundance hypothesis predicts that local adaptation is a function of the distance to the centre of a species' geographic range. To test this hypothesis, we gathered genomic diversity data from 49 populations, 646 individuals and 33,464 SNPs of two wild relatives of maize, the teosintes Zea mays ssp. parviglumis and Zea. mays. ssp. mexicana. We examined the association between the distance to their climatic and geographic centroids and the enrichment of SNPs bearing signals of adaptation. We identified candidate adaptive SNPs in each population by combining neutrality tests and cline analyses. By applying linear regression models, we found that the number of candidate SNPs is positively associated with niche suitability, while genetic diversity is reduced at the limits of the geographic distribution. Our results suggest that overall, populations located at the limit of the species' niches are adapting locally. We argue that local adaptation to this limit could initiate ecological speciation processes and facilitate adaptation to global change.
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Affiliation(s)
- J A Aguirre-Liguori
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - M I Tenaillon
- Génétique Quantitative et Evolution - Le Moulon, INRA, Univ. Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France
| | - A Vázquez-Lobo
- Centro de Investigación en Biodiversidad y Conservación, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | - B S Gaut
- Department of Ecology and Evolutionary Biology, UC Irvine, Irvine, CA, USA
| | - J P Jaramillo-Correa
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - S Montes-Hernandez
- Campo Experimental Bajío, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Celaya, Guanajuato, Mexico
| | - V Souza
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - L E Eguiarte
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
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21
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Parveda M, Kiran B, Punita DL, Kavi Kishor PB. Overexpression of SbAP37 in rice alleviates concurrent imposition of combination stresses and modulates different sets of leaf protein profiles. PLANT CELL REPORTS 2017; 36:773-786. [PMID: 28393269 DOI: 10.1007/s00299-017-2134-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 03/15/2017] [Indexed: 06/07/2023]
Abstract
SbAP37 transcription factor contributes to a combination of abiotic stresses when applied simultaneously in rice. It modulates a plethora of proteins that might regulate the downstream pathways to impart salt stress tolerance. APETALA type of transcription factor was isolated from Sorghum bicolor (SbAP37), overexpressed in rice using a salt inducible abscisic acid 2 (ABA2) promoter through Agrobacterium tumefaciens following in planta method. Transgenics were confirmed by PCR amplification of SbAP37, hygromycin phosphotransferase (hptII) marker and ABA2 promoter and DNA blot analysis. Plants were exposed to 150 mM NaCl coupled with high day/night 36 ± 2/25 ± 2 °C temperatures and also drought stress by withholding water for 1-week separately at the booting stage. SbAP37 expression was 2.8- to 4.7-folds higher in transgenic leaf under salt, but 1.8- to 3.3-folds higher in roots under drought stress. Native gene expression analysis showed that it is expressed more in stem than in roots and leaves under 150 mM NaCl and 6% PEG stress. In the present study, proteomic analysis of transgenics exposed to 150 mM NaCl coupled with elevated temperatures was taken up using quadrupole time-of-flight (Q-TOF) mass spectrometry (MS). The leaf proteome revealed 11 down regulated, 26 upregulated, 101 common (shared), 193 newly synthesized proteins in transgenics besides 368 proteins in untransformed plants. Some of these protein sets appeared different and unique to combined stresses. Our results suggest that the SbAP37 has the potential to improve combined stress tolerance without causing undesirable phenotypic characters when used under the influence of ABA2 promoter.
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Affiliation(s)
| | - B Kiran
- Bayer BioScience Pvt. Ltd., Madhapur, Hyderabad, 500 081, India
| | - D L Punita
- Department of Genetics, Osmania University, Hyderabad, 500 007, India
| | - P B Kavi Kishor
- Department of Genetics, Osmania University, Hyderabad, 500 007, India.
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22
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Cai B, Kong X, Zhong C, Sun S, Zhou XF, Jin YH, Wang Y, Li X, Zhu Z, Jin JB. SUMO E3 Ligases GmSIZ1a and GmSIZ1b regulate vegetative growth in soybean . JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2017; 59:2-14. [PMID: 27762067 PMCID: PMC5248596 DOI: 10.1111/jipb.12504] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Accepted: 10/18/2016] [Indexed: 05/08/2023]
Abstract
SIZ1 is a small ubiquitin-related modifier (SUMO) E3 ligase that mediates post-translational SUMO modification of target proteins and thereby regulates developmental processes and hormonal and environmental stress responses in Arabidopsis. However, the role of SUMO E3 ligases in crop plants is largely unknown. Here, we identified and characterized two Glycine max (soybean) SUMO E3 ligases, GmSIZ1a and GmSIZ1b. Expression of GmSIZ1a and GmSIZ1b was induced in response to salicylic acid (SA), heat, and dehydration treatment, but not in response to cold, abscisic acid (ABA), and NaCl treatment. Although GmSIZ1a was expressed at higher levels than GmSIZ1b, both genes encoded proteins with SUMO E3 ligase activity in vivo. Heterologous expression of GmSIZ1a or GmSIZ1b rescued the mutant phenotype of Arabidopsis siz1-2, including dwarfism, constitutively activated expression of pathogen-related genes, and ABA-sensitive seed germination. Simultaneous downregulation of GmSIZ1a and GmSIZ1b (GmSIZ1a/b) using RNA interference (RNAi)-mediated gene silencing decreased heat shock-induced SUMO conjugation in soybean. Moreover, GmSIZ1RNAi plants exhibited reduced plant height and leaf size. However, unlike Arabidopsis siz1-2 mutant plants, flowering time and SA levels were not significantly altered in GmSIZ1RNAi plants. Taken together, our results indicate that GmSIZ1a and GmSIZ1b mediate SUMO modification and positively regulate vegetative growth in soybean.
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Affiliation(s)
- Bin Cai
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyThe Chinese Academy of SciencesBeijing 100093China
| | - Xiangxiong Kong
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyThe Chinese Academy of SciencesBeijing 100093China
| | - Chao Zhong
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing 100081China
| | - Suli Sun
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing 100081China
| | - Xiao Feng Zhou
- Department of Ornamental HorticultureChina Agricultural UniversityBeijing 100193China
| | - Yin Hua Jin
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyThe Chinese Academy of SciencesBeijing 100093China
| | - Youning Wang
- State Key Laboratory of Agricultural MicrobiologyCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070China
| | - Xia Li
- State Key Laboratory of Agricultural MicrobiologyCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070China
| | - Zhendong Zhu
- National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing 100081China
| | - Jing Bo Jin
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyThe Chinese Academy of SciencesBeijing 100093China
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23
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Tamirisa S, Vudem DR, Khareedu VR. A Cyclin Dependent Kinase Regulatory Subunit (CKS) Gene of Pigeonpea Imparts Abiotic Stress Tolerance and Regulates Plant Growth and Development in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2017; 8:165. [PMID: 28239388 PMCID: PMC5301084 DOI: 10.3389/fpls.2017.00165] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 01/26/2017] [Indexed: 05/03/2023]
Abstract
Frequent climatic changes in conjunction with other extreme environmental factors are known to affect growth, development and productivity of diverse crop plants. Pigeonpea, a major grain legume of the semiarid tropics, endowed with an excellent deep-root system, is known as one of the important drought tolerant crop plants. Cyclin dependent kinases (CDKs) are core cell cycle regulators and play important role in different aspects of plant growth and development. The cyclin-dependent kinase regulatory subunit gene (CKS) was isolated from the cDNA library of pigeonpea plants subjected to drought stress. Pigeonpea CKS (CcCKS) gene expression was detected in both the root and leaf tissues of pigeonpea and was upregulated by polyethylene glycol (PEG), mannitol, NaCl and abscisic acid (ABA) treatments. The overexpression of CcCKS gene in Arabidopsis significantly enhanced tolerance of transgenics to drought and salt stresses as evidenced by different physiological parameters. Under stress conditions, transgenics showed higher biomass, decreased rate of water loss, decreased MDA levels, higher free proline contents, and glutathione levels. Moreover, under stress conditions transgenics exhibited lower stomatal conductance, lower transpiration, and higher photosynthetic rates. However, under normal conditions, CcCKS-transgenics displayed decreased plant growth rate, increased cell size and decreased stomatal number compared to those of wild-type plants. Real-time polymerase chain reaction revealed that CcCKS could regulate the expression of both ABA-dependent and ABA-independent genes associated with abiotic stress tolerance as well as plant growth and development. As such, the CcCKS seems promising and might serve as a potential candidate gene for enhancing the abiotic stress tolerance of crop plants.
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24
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Kong X, Luo X, Qu GP, Liu P, Jin JB. Arabidopsis SUMO protease ASP1 positively regulates flowering time partially through regulating FLC stability . JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2017; 59:15-29. [PMID: 27925396 DOI: 10.1111/jipb.12509] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 12/05/2016] [Indexed: 06/06/2023]
Abstract
The initiation of flowering is tightly regulated by the endogenous and environment signals, which is crucial for the reproductive success of flowering plants. It is well known that autonomous and vernalization pathways repress transcription of FLOWERING LOCUS C (FLC), a focal floral repressor, but how its protein stability is regulated remains largely unknown. Here, we found that mutations in a novel Arabidopsis SUMO protease 1 (ASP1) resulted in a strong late-flowering phenotype under long-days, but to a lesser extent under short-days. ASP1 localizes in the nucleus and exhibited a SUMO protease activity in vitro and in vivo. The conserved Cys-577 in ASP1 is critical for its enzymatic activity, as well as its physiological function in the regulation of flowering time. Genetic and gene expression analyses demonstrated that ASP1 promotes transcription of positive regulators of flowering, such as FT, SOC1 and FD, and may function in both CO-dependent photoperiod pathway and FLC-dependent pathways. Although the transcription level of FLC was not affected in the loss-of-function asp1 mutant, the protein stability of FLC was increased in the asp1 mutant. Taken together, this study identified a novel bona fide SUMO protease, ASP1, which positively regulates transition to flowering at least partly by repressing FLC protein stability.
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Affiliation(s)
- Xiangxiong Kong
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China
- Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Xi Luo
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China
- Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Gao-Ping Qu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China
- Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Peng Liu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China
| | - Jing Bo Jin
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China
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25
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Abraham PE, Yin H, Borland AM, Weighill D, Lim SD, De Paoli HC, Engle N, Jones PC, Agh R, Weston DJ, Wullschleger SD, Tschaplinski T, Jacobson D, Cushman JC, Hettich RL, Tuskan GA, Yang X. Transcript, protein and metabolite temporal dynamics in the CAM plant Agave. NATURE PLANTS 2016; 2:16178. [PMID: 27869799 DOI: 10.1038/nplants.2016.178] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 10/20/2016] [Indexed: 05/19/2023]
Abstract
Already a proven mechanism for drought resilience, crassulacean acid metabolism (CAM) is a specialized type of photosynthesis that maximizes water-use efficiency by means of an inverse (compared to C3 and C4 photosynthesis) day/night pattern of stomatal closure/opening to shift CO2 uptake to the night, when evapotranspiration rates are low. A systems-level understanding of temporal molecular and metabolic controls is needed to define the cellular behaviour underpinning CAM. Here, we report high-resolution temporal behaviours of transcript, protein and metabolite abundances across a CAM diel cycle and, where applicable, compare the observations to the well-established C3 model plant Arabidopsis. A mechanistic finding that emerged is that CAM operates with a diel redox poise that is shifted relative to that in Arabidopsis. Moreover, we identify widespread rescheduled expression of genes associated with signal transduction mechanisms that regulate stomatal opening/closing. Controlled production and degradation of transcripts and proteins represents a timing mechanism by which to regulate cellular function, yet knowledge of how this molecular timekeeping regulates CAM is unknown. Here, we provide new insights into complex post-transcriptional and -translational hierarchies that govern CAM in Agave. These data sets provide a resource to inform efforts to engineer more efficient CAM traits into economically valuable C3 crops.
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Affiliation(s)
- Paul E Abraham
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Hengfu Yin
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Anne M Borland
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- School of Biology, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK
| | - Deborah Weighill
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- The Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Sung Don Lim
- Department of Biochemistry and Molecular Biology, University of Nevada, MS330, Reno, Nevada 89557-0330, USA
| | | | - Nancy Engle
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Piet C Jones
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- The Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Ryan Agh
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - David J Weston
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Stan D Wullschleger
- Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Timothy Tschaplinski
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Daniel Jacobson
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- The Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - John C Cushman
- Department of Biochemistry and Molecular Biology, University of Nevada, MS330, Reno, Nevada 89557-0330, USA
| | - Robert L Hettich
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Gerald A Tuskan
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Xiaohan Yang
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
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26
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Clauw P, Coppens F, Korte A, Herman D, Slabbinck B, Dhondt S, Van Daele T, De Milde L, Vermeersch M, Maleux K, Maere S, Gonzalez N, Inzé D. Leaf Growth Response to Mild Drought: Natural Variation in Arabidopsis Sheds Light on Trait Architecture. THE PLANT CELL 2016; 28:2417-2434. [PMID: 27729396 PMCID: PMC5134983 DOI: 10.1105/tpc.16.00483] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/02/2016] [Accepted: 10/10/2016] [Indexed: 05/04/2023]
Abstract
Plant growth and crop yield are negatively affected by a reduction in water availability. However, a clear understanding of how growth is regulated under nonlethal drought conditions is lacking. Recent advances in genomics, phenomics, and transcriptomics allow in-depth analysis of natural variation. In this study, we conducted a detailed screening of leaf growth responses to mild drought in a worldwide collection of Arabidopsis thaliana accessions. The genetic architecture of the growth responses upon mild drought was investigated by subjecting the different leaf growth phenotypes to genome-wide association mapping and by characterizing the transcriptome of young developing leaves. Although no major effect locus was found to be associated with growth in mild drought, the transcriptome analysis delivered further insight into the natural variation of transcriptional responses to mild drought in a specific tissue. Coexpression analysis indicated the presence of gene clusters that co-vary over different genetic backgrounds, among others a cluster of genes with important regulatory functions in the growth response to osmotic stress. It was found that the occurrence of a mild drought stress response in leaves can be inferred with high accuracy across accessions based on the expression profile of 283 genes. A genome-wide association study on the expression data revealed that trans regulation seems to be more important than cis regulation in the transcriptional response to environmental perturbations.
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Affiliation(s)
- Pieter Clauw
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Frederik Coppens
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Arthur Korte
- Gregor Mendel Institute of Molecular Plant Biology, 1030 Vienna, Austria
| | - Dorota Herman
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Bram Slabbinck
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Stijn Dhondt
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Twiggy Van Daele
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Liesbeth De Milde
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Mattias Vermeersch
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Katrien Maleux
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Steven Maere
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Nathalie Gonzalez
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Dirk Inzé
- Department of Plant Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Address correspondence to
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27
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Qi S, Lin Q, Zhu H, Gao F, Zhang W, Hua X. The RING Finger E3 Ligase SpRing is a Positive Regulator of Salt Stress Signaling in Salt-Tolerant Wild Tomato Species. PLANT & CELL PHYSIOLOGY 2016; 57:528-39. [PMID: 26786853 DOI: 10.1093/pcp/pcw006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Accepted: 01/07/2016] [Indexed: 05/04/2023]
Abstract
Protein ubiquitination in plants plays critical roles in many biological processes, including adaptation to abiotic stresses. Previously, RING finger E3 ligase has been characterized during salt stress response in several plant species, but little is known about its function in tomato. Here, we report that SpRing, a stress-inducible gene, is involved in salt stress signaling in wild tomato species Solanum pimpinellifolium 'PI365967'. In vitro ubiquitination assay revealed that SpRing is an E3 ubiquitin ligase and the RING finger conserved region is required for its activity. SpRing is expressed in all tissues of wild tomato and up-regulated by salt, drought and osmotic stresses, but repressed by low temperature. Green fluorescent protein (GFP) fusion analysis showed that SpRing is localized at the endoplasmic reticulum. Silencing of SpRing through a virus-induced gene silencing approach led to increased sensitivity to salt stress in wild tomato. Overexpression of SpRing in Arabidopsis thaliana resulted in enhanced salt tolerance during seed germination and early seedling development. The expression levels of certain key stress-related genes are altered both in SpRing-overexpressing Arabidopsis plants and virus-induced gene silenced tomato seedlings. Taken together, our results indicate that SpRing is involved in salt stress and functions as a positive regulator of salt tolerance.
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Affiliation(s)
- Shilian Qi
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany Chinese Academy of Sciences, Beijing 100093, China University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qingfang Lin
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany Chinese Academy of Sciences, Beijing 100093, China University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huishan Zhu
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany Chinese Academy of Sciences, Beijing 100093, China
| | - Fenghua Gao
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany Chinese Academy of Sciences, Beijing 100093, China
| | - Wenhao Zhang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Xuejun Hua
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany Chinese Academy of Sciences, Beijing 100093, China
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28
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Abeynayake SW, Byrne S, Nagy I, Jonavičienė K, Etzerodt TP, Boelt B, Asp T. Changes in Lolium perenne transcriptome during cold acclimation in two genotypes adapted to different climatic conditions. BMC PLANT BIOLOGY 2015; 15:250. [PMID: 26474965 PMCID: PMC4609083 DOI: 10.1186/s12870-015-0643-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 10/12/2015] [Indexed: 05/20/2023]
Abstract
BACKGROUND Activation of numerous protective mechanisms during cold acclimation is important for the acquisition of freezing tolerance in perennial ryegrass (Lolium perenne L.). To elucidate the molecular mechanisms of cold acclimation in two genotypes ('Veyo' and 'Falster') of perennial ryegrass from distinct geographical origins, we performed transcriptome profiling during cold acclimation using RNA-Seq. METHODS We cold-acclimated plants from both genotypes in controlled conditions for a period of 17 days and isolated Total RNA at various time points for high throughput sequencing using Illumina technology. RNA-seq reads were aligned to genotype specific references to identify transcripts with significant changes in expression during cold acclimation. RESULTS The genes induced were involved in protective mechanisms such as cell response to abiotic stimulus, signal transduction, redox homeostasis, plasma membrane and cell wall modifications, and carbohydrate metabolism in both genotypes. 'Falster' genotype, adapted to cold climates, showed a stronger transcriptional differentiation during cold acclimation, and more differentially expressed transcripts related to stress, signal transduction, response to abiotic stimulus, and metabolic processes compared to 'Veyo'. 'Falster' genotype also showed an induction of more transcripts with sequence homology to fructosyltransferase genes (FTs) and a higher fold induction of fructan in response to low-temperature stress. The circadian rhythm network was perturbed in the 'Veyo' genotype adapted to warmer climates. CONCLUSION In this study, the differentially expressed genes during cold acclimation, potentially involved in numerous protective mechanisms, were identified in two genotypes of perennial ryegrass from distinct geographical origins. The observation that the circadian rhythm network was perturbed in 'Veyo' during cold acclimation may point to a low adaptability of 'Veyo' to low temperature stresses. This study also revealed the transcriptional mechanisms underlying carbon allocation towards fructan biosynthesis in perennial ryegrass.
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Affiliation(s)
- Shamila Weerakoon Abeynayake
- Department of Agroecology - Crop Health, Aarhus University, Slagelse, Denmark.
- Department of Molecular Biology and Genetics, Science and Technology, Aarhus University, Slagelse, Denmark.
| | - Stephen Byrne
- Department of Molecular Biology and Genetics, Science and Technology, Aarhus University, Slagelse, Denmark.
| | - Istvan Nagy
- Department of Molecular Biology and Genetics, Science and Technology, Aarhus University, Slagelse, Denmark.
| | - Kristina Jonavičienė
- Laboratory of Genetics and Physiology, Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Kėdainiai distr, Lithuania.
| | | | - Birte Boelt
- Department of Agroecology - Crop Health, Aarhus University, Slagelse, Denmark.
| | - Torben Asp
- Department of Molecular Biology and Genetics, Science and Technology, Aarhus University, Slagelse, Denmark.
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29
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Zheng Y, Yang Y, Xu Y. Purification and characterization of Cyclin-H1 from Arabidopsis thaliana. Protein Expr Purif 2015; 114:9-14. [PMID: 26073096 DOI: 10.1016/j.pep.2015.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 06/03/2015] [Indexed: 12/01/2022]
Abstract
Cyclin H (CycH), a member of the large cyclin family, participates in every process of cell division. Its biological functions and importance have received wide attention in mammalians, but not in higher plants. This work reports a protein purification protocol for obtaining Arabidopsis CycH;1 (AtCycH;1) from prokaryotic expression system, followed by characterization of its biophysical properties. The protein was constructed with a His-tag at its N-terminus. One-step nickel-affinity purification yielded high pure target protein, which behaved as a monomer in the testing condition. Circular Dichroism spectrum revealed that AtCycH;1 is a helical protein containing a significant amount of disordered structures. Further assays indicated that AtCycH;1 exhibits poor heat-resistance and can be easily degraded in room temperature, suggesting low stability for the protein. The flexible and unstable properties may be intrinsic to the protein in vivo as it has to bind with different partners during the cell cycle and be promptly degraded to meet the phase transition. The instability, however, can be improved by adding SO4(2-) ion in the protein buffer. The presence of a high concentration of SO4(2-) is capable of increasing the thermal stability and inhibiting the degradation. Irrespective of whether the association of SO4(2-) with AtCycH;1 drives the protein into more compact form or not, the current results may provide clues for a successful crystallization of AtCycH;1 and its subsequent structural analysis in the future.
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Affiliation(s)
- Yawen Zheng
- The Nurturing Station for the State Key Laboratory of Subtropical Sylviculture, Zhejiang Agriculture and Forestry University, Lin'an, Zhejiang 311300, China
| | - Yiyi Yang
- The Nurturing Station for the State Key Laboratory of Subtropical Sylviculture, Zhejiang Agriculture and Forestry University, Lin'an, Zhejiang 311300, China
| | - Yingwu Xu
- The Nurturing Station for the State Key Laboratory of Subtropical Sylviculture, Zhejiang Agriculture and Forestry University, Lin'an, Zhejiang 311300, China.
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30
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Raynaud C, Mallory AC, Latrasse D, Jégu T, Bruggeman Q, Delarue M, Bergounioux C, Benhamed M. Chromatin meets the cell cycle. JOURNAL OF EXPERIMENTAL BOTANY 2014; 65:2677-89. [PMID: 24497647 DOI: 10.1093/jxb/ert433] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The cell cycle is one of the most comprehensively studied biological processes, due primarily to its significance in growth and development, and its deregulation in many human disorders. Studies using a diverse set of model organisms, including yeast, worms, flies, frogs, mammals, and plants, have greatly expanded our knowledge of the cell cycle and have contributed to the universally accepted view of how the basic cell cycle machinery is regulated. In addition to the oscillating activity of various cyclin-dependent kinase (CDK)-cyclin complexes, a plethora of proteins affecting various aspects of chromatin dynamics has been shown to be essential for cell proliferation during plant development. Furthermore, it was reported recently that core cell cycle regulators control gene expression by modifying histone patterns. This review focuses on the intimate relationship between the cell cycle and chromatin. It describes the dynamics and functions of chromatin structures throughout cell cycle progression and discusses the role of heterochromatin as a barrier against re-replication and endoreduplication. It also proposes that core plant cell cycle regulators control gene expression in a manner similar to that described in mammals. At present, our challenge in plants is to define the complete set of effectors and actors that coordinate cell cycle progression and chromatin structure and to understand better the functional interplay between these two processes.
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Affiliation(s)
- Cécile Raynaud
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - Allison C Mallory
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - David Latrasse
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - Teddy Jégu
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - Quentin Bruggeman
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - Marianne Delarue
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - Catherine Bergounioux
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - Moussa Benhamed
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
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31
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Song Y, Miao Y, Song CP. Behind the scenes: the roles of reactive oxygen species in guard cells. THE NEW PHYTOLOGIST 2014; 201:1121-1140. [PMID: 24188383 DOI: 10.1111/nph.12565] [Citation(s) in RCA: 142] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Accepted: 09/25/2013] [Indexed: 05/19/2023]
Abstract
Guard cells regulate stomatal pore size through integration of both endogenous and environmental signals; they are widely recognized as providing a key switching mechanism that maximizes both the efficient use of water and rates of CO₂ exchange for photosynthesis; this is essential for the adaptation of plants to water stress. Reactive oxygen species (ROS) are widely considered to be an important player in guard cell signalling. In this review, we focus on recent progress concerning the role of ROS as signal molecules in controlling stomatal movement, the interaction between ROS and intrinsic and environmental response pathways, the specificity of ROS signalling, and how ROS signals are sensed and relayed. However, the picture of ROS-mediated signalling is still fragmented and the issues of ROS sensing and the specificity of ROS signalling remain unclear. Here, we review some recent advances in our understanding of ROS signalling in guard cells, with an emphasis on the main players known to interact with abscisic acid signalling.
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Affiliation(s)
- Yuwei Song
- Institute of Plant Stress Biology, National Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng, 475001, China
| | - Yuchen Miao
- Institute of Plant Stress Biology, National Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng, 475001, China
| | - Chun-Peng Song
- Institute of Plant Stress Biology, National Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng, 475001, China
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32
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Smékalová V, Doskočilová A, Komis G, Samaj J. Crosstalk between secondary messengers, hormones and MAPK modules during abiotic stress signalling in plants. Biotechnol Adv 2013; 32:2-11. [PMID: 23911976 DOI: 10.1016/j.biotechadv.2013.07.009] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 07/23/2013] [Accepted: 07/24/2013] [Indexed: 01/04/2023]
Abstract
The crosstalk between second messengers, hormones and mitogen-activated protein kinases (MAPKs) in plant signalling systems facilitates adaptation and survival in the face of diverse environmental stresses. This review focuses on the transduction of second messenger and hormone signals by MAPK modules in plant abiotic stress responses. We discuss how this crosstalk regulates gene expression (e.g. by controlling transcription factor activity) and other cellular and physiological responses to enable adaptation and/or resistance to abiotic stresses.
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Affiliation(s)
- Veronika Smékalová
- Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Cell Biology, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - Anna Doskočilová
- Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Cell Biology, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - George Komis
- Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Cell Biology, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - Jozef Samaj
- Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Cell Biology, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic.
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