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Ma L, Xing L, Li Z, Jiang D. Epigenetic control of plant abiotic stress responses. J Genet Genomics 2024:S1673-8527(24)00246-7. [PMID: 39322116 DOI: 10.1016/j.jgg.2024.09.008] [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: 08/15/2024] [Revised: 09/14/2024] [Accepted: 09/16/2024] [Indexed: 09/27/2024]
Abstract
On top of genetic information, organisms have evolved complex and sophisticated epigenetic regulation to adjust gene expression in response to developmental and environmental signals. Key epigenetic mechanisms include DNA methylation, histone modifications and variants, chromatin remodeling, and chemical modifications of RNAs. Epigenetic control of environmental responses is particularly important for plants, which are sessile and unable to move away from adverse environments. Besides enabling plants to rapidly respond to environmental stresses, some stress-induced epigenetic changes can be maintained, providing plants with a pre-adapted state to recurring stresses. Understanding these epigenetic mechanisms offers valuable insights for developing crop varieties with enhanced stress tolerance. Here, we focus on abiotic stresses and summarize recent progress in characterizing stress-induced epigenetic changes and their regulatory mechanisms and roles in plant abiotic stress resistance.
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Affiliation(s)
- Lijun Ma
- Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Ministry of Education Key Laboratory of Plant Development and Environmental Adaption Biology, School of Life Sciences, Shandong University, Qingdao, Shandong 266237 China
| | - Lihe Xing
- Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zicong Li
- Ministry of Education Key Laboratory of Plant Development and Environmental Adaption Biology, School of Life Sciences, Shandong University, Qingdao, Shandong 266237 China
| | - Danhua Jiang
- Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore.
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2
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Zheng S, Zhao W, Liu Z, Geng Z, Li Q, Liu B, Li B, Bai J. Establishment and Maintenance of Heat-Stress Memory in Plants. Int J Mol Sci 2024; 25:8976. [PMID: 39201662 PMCID: PMC11354667 DOI: 10.3390/ijms25168976] [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: 07/18/2024] [Revised: 08/15/2024] [Accepted: 08/15/2024] [Indexed: 09/02/2024] Open
Abstract
Among the rich repertoire of strategies that allow plants to adapt to high-temperature stress is heat-stress memory. The mechanisms underlying the establishment and maintenance of heat-stress memory are poorly understood, although the chromatin opening state appears to be an important structural basis for maintaining heat-stress memory. The chromatin opening state is influenced by epigenetic modifications, making DNA and histone modifications important entry points for understanding heat-shock memory. Current research suggests that traditional heat-stress signaling pathway components might be involved in chromatin opening, thereby promoting the establishment of heat-stress memory in plants. In this review, we discuss the relationship between chromatin structure-based maintenance and the establishment of heat-stress memory. We also discuss the association between traditional heat-stress signals and epigenetic modifications. Finally, we discuss potential research ideas for exploring plant adaptation to high-temperature stress in the future.
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Affiliation(s)
- Shuzhi Zheng
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Basic Research Center of Cell Biology, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Weishuang Zhao
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Basic Research Center of Cell Biology, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Zimeng Liu
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Basic Research Center of Cell Biology, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Ziyue Geng
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Basic Research Center of Cell Biology, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Qiang Li
- Dryland Farming Institute of Hebei Academy of Agricultural and Forestry Science, Key Laboratory of Crop Drought Tolerance Research of Hebei Province, Hengshui 053000, China
| | - Binhui Liu
- Dryland Farming Institute of Hebei Academy of Agricultural and Forestry Science, Key Laboratory of Crop Drought Tolerance Research of Hebei Province, Hengshui 053000, China
| | - Bing Li
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Basic Research Center of Cell Biology, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Jiaoteng Bai
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, Hebei Basic Research Center of Cell Biology, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
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3
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Wu J, Liu B, Dong A. Interplay between histone variants and chaperones in plants. CURRENT OPINION IN PLANT BIOLOGY 2024; 80:102551. [PMID: 38776573 DOI: 10.1016/j.pbi.2024.102551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/25/2024] [Accepted: 04/28/2024] [Indexed: 05/25/2024]
Abstract
Histone chaperones and histone variants play crucial roles in DNA replication, gene transcription, and DNA repair in eukaryotes. Histone chaperones reversibly promote nucleosome assembly and disassembly by incorporating or evicting histones and histone variants to modulate chromatin accessibility, thereby altering the chromatin states and modulating DNA-related biological processes. Cofactors assist histone chaperones to target specific chromatin regions to regulate the exchange of histones and histone variants. In this review, we summarize recent progress in the interplay between histone variants and chaperones in plants. We discuss the structural basis of chaperone-histone complexes and the mechanisms of their cooperation in regulating gene transcription and plant development.
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Affiliation(s)
- Jiabing Wu
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center of Genetics and Development, Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, 200438, PR China; Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, School of Life Sciences, Fudan University, Shanghai, 200438, PR China
| | - Bing Liu
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Aiwu Dong
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center of Genetics and Development, Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, 200438, PR China.
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Sedaghatmehr M, Balazadeh S. Autophagy: a key player in the recovery of plants from heat stress. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:2246-2255. [PMID: 38236036 PMCID: PMC11016841 DOI: 10.1093/jxb/erae018] [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: 11/02/2023] [Accepted: 01/15/2024] [Indexed: 01/19/2024]
Abstract
Plants can be primed to withstand otherwise lethal heat stress (HS) through exposure to a preceding temporary and mild HS, commonly known as the 'thermopriming stimulus'. Plants have also evolved mechanisms to establish 'memories' of a previous stress encounter, or to reset their physiology to the original cellular state once the stress has ended. The priming stimulus triggers a widespread change of transcripts, proteins, and metabolites, which is crucial for maintaining the memory state but may not be required for growth and development under optimal conditions or may even be harmful. In such a scenario, recycling mechanisms such as autophagy are crucial for re-establishing cellular homeostasis and optimizing resource use for post-stress growth. While pivotal for eliminating heat-induced protein aggregates and protecting plants from the harmful impact of HS, recent evidence implies that autophagy also breaks down heat-induced protective macromolecules, including heat shock proteins, functioning as a resetting mechanism during the recovery from mild HS. This review provides an overview of the latest advances in understanding the multifaceted functions of autophagy in HS responses, with a specific emphasis on its roles in recovery from mild HS, and the modulation of HS memory.
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Affiliation(s)
- Mastoureh Sedaghatmehr
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Potsdam, Germany
| | - Salma Balazadeh
- Leiden University, PO Box 9500, 2300 RA, Leiden, The Netherlands
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Cai L, Ma A, Lei J, He C. METTL4-mediated N 6-methyladenine DNA modification regulates thermotolerance in Arabidopsis thaliana. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 338:111916. [PMID: 37944704 DOI: 10.1016/j.plantsci.2023.111916] [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: 09/19/2023] [Revised: 10/18/2023] [Accepted: 11/04/2023] [Indexed: 11/12/2023]
Abstract
DNA N6-methyladenine (6 mA) is an evolutionarily conserved DNA modification in procaryotes and eukaryotes. The DNA 6 mA methylation is tightly controlled by 6 mA regulatory proteins. DNA N6-adenine methyltransferase 1 (DAMT-1) has been identified as a DNA 6 mA methyltransferase in animals. In plants, DNA 6 mA methylation has been found, however, the DNA 6 mA methyltransferases and their function in plants are largely unknown. In our study, we find METTL4 is a DNA 6 mA methyltransferase in Arabidopsis thaliana. Both in vitro and in vivo evidences support the DNA 6 mA methyltransferase activity of METTL4. mettl4 mutant is hypersensitive to heat stress, suggesting DNA 6 mA methylation plays important role in heat stress adaption. RNA-seq and 6 mA IP-qPCR analysis show that METTL4 participates in heat stress tolerance by regulating expression of heat responsive genes. Our study find METTL4 is a plant DNA 6 mA methyltransferase and illustrates its function in regulating heat stress response.
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Affiliation(s)
- Linjun Cai
- Hunan Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha, 410082 Hunan, China
| | - Ancheng Ma
- Hunan Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha, 410082 Hunan, China
| | - Jiao Lei
- Hunan Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha, 410082 Hunan, China
| | - Chongsheng He
- Hunan Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha, 410082 Hunan, China.
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6
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Amini Z, Salehi H, Chehrazi M, Etemadi M, Xiang M. miRNAs and Their Target Genes Play a Critical Role in Response to Heat Stress in Cynodon dactylon (L.) Pers. Mol Biotechnol 2023; 65:2004-2017. [PMID: 36913082 DOI: 10.1007/s12033-023-00713-2] [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: 12/27/2022] [Accepted: 02/27/2023] [Indexed: 03/14/2023]
Abstract
Annual global temperature is increasing rapidly. Therefore, in the near future, plants will be exposed to severe heat stress. However, the potential of microRNAs-mediated molecular mechanism for modulating the expression of their target genes is unclear. To investigate the changes of miRNAs in thermo-tolerant plants, in this study, we first investigated the impact of four high temperature regimes including 35/30 °C, 40/35 °C, 45/40 °C, and 50/45 °C in a day/night cycle for 21 days on the physiological traits (total chlorophyll, relative water content and electrolyte leakage and total soluble protein), antioxidant enzymes activities (superoxide dismutase, ascorbic peroxidase, catalase and peroxidase), and osmolytes (total soluble carbohydrates and starch) in two bermudagrass accessions named Malayer and Gorgan. The results showed that more chlorophyll and the relative water content, lower ion leakage, more efficient protein and carbon metabolism and activation of defense proteins (such as antioxidant enzymes) in Gorgan accession, led to better maintained plant growth and activity during heat stress. In the next stage, to investigate the role of miRNAs and their target genes in response to heat stress in a thermo-tolerant plant, the impact of severe heat stress (45/40 °C) was evaluated on the expression of three miRNAs (miRNA159a, miRNA160a and miRNA164f) and their target genes (GAMYB, ARF17 and NAC1, respectively). All measurements were performed in leaves and roots simultaneously. Heat stress significantly induced the expression of three miRNAs in leaves of two accession, while having different effects on the expression of these miRNAs in roots. The results showed that a decrease in the expression of the transcription factor ARF17, no change in the expression of the transcription factor NAC1, and an increase in the expression of the transcription factor GAMYB in leaf and root tissues of Gorgan accession led to improved heat tolerance in it. These results also showed that the effect of miRNAs on the modulating expression of target mRNAs in leaves and roots is different under heat stress, and miRNAs and mRNAs show spatiotemporal expression. Therefore, the simultaneous analysis of miRNAs and mRNAs expressions in shoot and roots is needed to comprehensively understand miRNAs regulatory function under heat stress.
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Affiliation(s)
- Zohreh Amini
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Hassan Salehi
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran.
| | - Mehrangiz Chehrazi
- Department of Horticultural Science, School of Agriculture, Shahid Chamran University, Ahvaz, Iran
| | - Mohammad Etemadi
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Mingying Xiang
- Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK, 74078, USA
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7
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Sharma M, Sidhu AK, Samota MK, Gupta M, Koli P, Choudhary M. Post-Translational Modifications in Histones and Their Role in Abiotic Stress Tolerance in Plants. Proteomes 2023; 11:38. [PMID: 38133152 PMCID: PMC10747722 DOI: 10.3390/proteomes11040038] [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: 10/12/2023] [Revised: 11/06/2023] [Accepted: 11/16/2023] [Indexed: 12/23/2023] Open
Abstract
Abiotic stresses profoundly alter plant growth and development, resulting in yield losses. Plants have evolved adaptive mechanisms to combat these challenges, triggering intricate molecular responses to maintain tissue hydration and temperature stability during stress. A pivotal player in this defense is histone modification, governing gene expression in response to diverse environmental cues. Post-translational modifications (PTMs) of histone tails, including acetylation, phosphorylation, methylation, ubiquitination, and sumoylation, regulate transcription, DNA processes, and stress-related traits. This review comprehensively explores the world of PTMs of histones in plants and their vital role in imparting various abiotic stress tolerance in plants. Techniques, like chromatin immune precipitation (ChIP), ChIP-qPCR, mass spectrometry, and Cleavage Under Targets and Tag mentation, have unveiled the dynamic histone modification landscape within plant cells. The significance of PTMs in enhancing the plants' ability to cope with abiotic stresses has also been discussed. Recent advances in PTM research shed light on the molecular basis of stress tolerance in plants. Understanding the intricate proteome complexity due to various proteoforms/protein variants is a challenging task, but emerging single-cell resolution techniques may help to address such challenges. The review provides the future prospects aimed at harnessing the full potential of PTMs for improved plant responses under changing climate change.
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Affiliation(s)
- Madhvi Sharma
- Post Graduate Department of Biotechnology, Khalsa College, Amritsar 143009, India; (M.S.); (A.K.S.)
| | - Amanpreet K. Sidhu
- Post Graduate Department of Biotechnology, Khalsa College, Amritsar 143009, India; (M.S.); (A.K.S.)
| | - Mahesh Kumar Samota
- ICAR-Central Institute of Post-Harvest Engineering and Technology, Regional Station, Abohar 152116, India
| | - Mamta Gupta
- ICAR-Indian Institute of Maize Research, Ludhiana 141001, India;
| | - Pushpendra Koli
- Plant Animal Relationship Division, ICAR-Indian Grassland and Fodder Research Institute, Jhansi 284003, India;
- Post-Harvest Biosecurity, Murdoch University, Perth, WA 6150, Australia
| | - Mukesh Choudhary
- ICAR-Indian Institute of Maize Research, Ludhiana 141001, India;
- School of Agriculture and Environment, The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia
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8
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Kan Y, Mu XR, Gao J, Lin HX, Lin Y. The molecular basis of heat stress responses in plants. MOLECULAR PLANT 2023; 16:1612-1634. [PMID: 37740489 DOI: 10.1016/j.molp.2023.09.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 08/30/2023] [Accepted: 09/19/2023] [Indexed: 09/24/2023]
Abstract
Global warming impacts crop production and threatens food security. Elevated temperatures are sensed by different cell components. Temperature increases are classified as either mild warm temperatures or excessively hot temperatures, which are perceived by distinct signaling pathways in plants. Warm temperatures induce thermomorphogenesis, while high-temperature stress triggers heat acclimation and has destructive effects on plant growth and development. In this review, we systematically summarize the heat-responsive genetic networks in Arabidopsis and crop plants based on recent studies. In addition, we highlight the strategies used to improve grain yield under heat stress from a source-sink perspective. We also discuss the remaining issues regarding the characteristics of thermosensors and the urgency required to explore the basis of acclimation under multifactorial stress combination.
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Affiliation(s)
- Yi Kan
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xiao-Rui Mu
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Jin Gao
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Hong-Xuan Lin
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China.
| | - Youshun Lin
- Joint Center for Single Cell Biology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
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Rodrigues M, Forestan C, Ravazzolo L, Hugueney P, Baltenweck R, Rasori A, Cardillo V, Carraro P, Malagoli M, Brizzolara S, Quaggiotti S, Porro D, Meggio F, Bonghi C, Battista F, Ruperti B. Metabolic and Molecular Rearrangements of Sauvignon Blanc ( Vitis vinifera L.) Berries in Response to Foliar Applications of Specific Dry Yeast. PLANTS (BASEL, SWITZERLAND) 2023; 12:3423. [PMID: 37836164 PMCID: PMC10574919 DOI: 10.3390/plants12193423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 10/15/2023]
Abstract
Dry yeast extracts (DYE) are applied to vineyards to improve aromatic and secondary metabolic compound content and wine quality; however, systematic information on the underpinning molecular mechanisms is lacking. This work aimed to unravel, through a systematic approach, the metabolic and molecular responses of Sauvignon Blanc berries to DYE treatments. To accomplish this, DYE spraying was performed in a commercial vineyard for two consecutive years. Berries were sampled at several time points after the treatment, and grapes were analyzed for sugars, acidity, free and bound aroma precursors, amino acids, and targeted and untargeted RNA-Seq transcriptional profiles. The results obtained indicated that the DYE treatment did not interfere with the technological ripening parameters of sugars and acidity. Some aroma precursors, including cys-3MH and GSH-3MH, responsible for the typical aromatic nuances of Sauvignon Blanc, were stimulated by the treatment during both vintages. The levels of amino acids and the global RNA-seq transcriptional profiles indicated that DYE spraying upregulated ROS homeostatic and thermotolerance genes, as well as ethylene and jasmonic acid biosynthetic genes, and activated abiotic and biotic stress responses. Overall, the data suggested that the DYE reduced berry oxidative stress through the regulation of specific subsets of metabolic and hormonal pathways.
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Affiliation(s)
- Marta Rodrigues
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Padova, Italy; (M.R.); (L.R.); (A.R.); (V.C.); (P.C.); (M.M.); (S.Q.); (F.M.); (C.B.)
| | - Cristian Forestan
- Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy;
| | - Laura Ravazzolo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Padova, Italy; (M.R.); (L.R.); (A.R.); (V.C.); (P.C.); (M.M.); (S.Q.); (F.M.); (C.B.)
| | - Philippe Hugueney
- National Research Institute for Agriculture, Food and Environment (INRAE), SVQV UMR A1131, University of Strasbourg, 67081 Strasbourg, France; (P.H.); (R.B.)
| | - Raymonde Baltenweck
- National Research Institute for Agriculture, Food and Environment (INRAE), SVQV UMR A1131, University of Strasbourg, 67081 Strasbourg, France; (P.H.); (R.B.)
| | - Angela Rasori
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Padova, Italy; (M.R.); (L.R.); (A.R.); (V.C.); (P.C.); (M.M.); (S.Q.); (F.M.); (C.B.)
| | - Valerio Cardillo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Padova, Italy; (M.R.); (L.R.); (A.R.); (V.C.); (P.C.); (M.M.); (S.Q.); (F.M.); (C.B.)
| | - Pietro Carraro
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Padova, Italy; (M.R.); (L.R.); (A.R.); (V.C.); (P.C.); (M.M.); (S.Q.); (F.M.); (C.B.)
| | - Mario Malagoli
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Padova, Italy; (M.R.); (L.R.); (A.R.); (V.C.); (P.C.); (M.M.); (S.Q.); (F.M.); (C.B.)
| | - Stefano Brizzolara
- Crop Science Research Center, Scuola Superiore Sant’Anna, 56127 Pisa, Italy;
| | - Silvia Quaggiotti
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Padova, Italy; (M.R.); (L.R.); (A.R.); (V.C.); (P.C.); (M.M.); (S.Q.); (F.M.); (C.B.)
| | - Duilio Porro
- Technology Transfer Centre, Edmund Mach Foundation, Via E. Mach 1, 38010 San Michele all ‘Adige, Italy;
| | - Franco Meggio
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Padova, Italy; (M.R.); (L.R.); (A.R.); (V.C.); (P.C.); (M.M.); (S.Q.); (F.M.); (C.B.)
- Interdepartmental Research Centre for Viticulture and Enology (CIRVE), University of Padova, Via XXVIII Aprile 14, Conegliano, 31015 Treviso, Italy
| | - Claudio Bonghi
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Padova, Italy; (M.R.); (L.R.); (A.R.); (V.C.); (P.C.); (M.M.); (S.Q.); (F.M.); (C.B.)
- Interdepartmental Research Centre for Viticulture and Enology (CIRVE), University of Padova, Via XXVIII Aprile 14, Conegliano, 31015 Treviso, Italy
| | | | - Benedetto Ruperti
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Padova, Italy; (M.R.); (L.R.); (A.R.); (V.C.); (P.C.); (M.M.); (S.Q.); (F.M.); (C.B.)
- Interdepartmental Research Centre for Viticulture and Enology (CIRVE), University of Padova, Via XXVIII Aprile 14, Conegliano, 31015 Treviso, Italy
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10
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Wang X, Tan NWK, Chung FY, Yamaguchi N, Gan ES, Ito T. Transcriptional Regulators of Plant Adaptation to Heat Stress. Int J Mol Sci 2023; 24:13297. [PMID: 37686100 PMCID: PMC10487819 DOI: 10.3390/ijms241713297] [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: 07/31/2023] [Revised: 08/20/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
Heat stress (HS) is becoming an increasingly large problem for food security as global warming progresses. As sessile species, plants have evolved different mechanisms to cope with the disruption of cellular homeostasis, which can impede plant growth and development. Here, we summarize the mechanisms underlying transcriptional regulation mediated by transcription factors, epigenetic regulators, and regulatory RNAs in response to HS. Additionally, cellular activities for adaptation to HS are discussed, including maintenance of protein homeostasis through protein quality control machinery, and autophagy, as well as the regulation of ROS homeostasis via a ROS-scavenging system. Plant cells harmoniously regulate their activities to adapt to unfavorable environments. Lastly, we will discuss perspectives on future studies for improving urban agriculture by increasing crop resilience to HS.
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Affiliation(s)
- Xuejing Wang
- Department of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma 630-0192, Nara, Japan; (X.W.); (N.Y.)
| | - Nicholas Wui Kiat Tan
- School of Applied Science, Republic Polytechnic, Singapore 738964, Singapore; (N.W.K.T.); (F.Y.C.)
| | - Fong Yi Chung
- School of Applied Science, Republic Polytechnic, Singapore 738964, Singapore; (N.W.K.T.); (F.Y.C.)
| | - Nobutoshi Yamaguchi
- Department of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma 630-0192, Nara, Japan; (X.W.); (N.Y.)
| | - Eng-Seng Gan
- School of Applied Science, Republic Polytechnic, Singapore 738964, Singapore; (N.W.K.T.); (F.Y.C.)
| | - Toshiro Ito
- Department of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma 630-0192, Nara, Japan; (X.W.); (N.Y.)
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11
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Huang J, Zhao X, Bürger M, Chory J, Wang X. The role of ethylene in plant temperature stress response. TRENDS IN PLANT SCIENCE 2023; 28:808-824. [PMID: 37055243 DOI: 10.1016/j.tplants.2023.03.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 02/15/2023] [Accepted: 03/07/2023] [Indexed: 06/17/2023]
Abstract
Temperature influences the seasonal growth and geographical distribution of plants. Heat or cold stress occur when temperatures exceed or fall below the physiological optimum ranges, resulting in detrimental and irreversible damage to plant growth, development, and yield. Ethylene is a gaseous phytohormone with an important role in plant development and multiple stress responses. Recent studies have shown that, in many plant species, both heat and cold stress affect ethylene biosynthesis and signaling pathways. In this review, we summarize recent advances in understanding the role of ethylene in plant temperature stress responses and its crosstalk with other phytohormones. We also discuss potential strategies and knowledge gaps that need to be adopted and filled to develop temperature stress-tolerant crops by optimizing ethylene response.
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Affiliation(s)
- Jianyan Huang
- National Center for Tea Plant Improvement, Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China.
| | - Xiaobo Zhao
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Rural Affairs and Zhejiang Province, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Marco Bürger
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Joanne Chory
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA; Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Xinchao Wang
- National Center for Tea Plant Improvement, Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China.
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12
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Zhao F, Xue M, Zhang H, Li H, Zhao T, Jiang D. Coordinated histone variant H2A.Z eviction and H3.3 deposition control plant thermomorphogenesis. THE NEW PHYTOLOGIST 2023; 238:750-764. [PMID: 36647799 DOI: 10.1111/nph.18738] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
Plants can sense temperature changes and adjust their development and morphology accordingly in a process called thermomorphogenesis. This phenotypic plasticity implies complex mechanisms regulating gene expression reprogramming in response to environmental alteration. Histone variants often associate with specific chromatin states; yet, how their deposition/eviction modulates transcriptional changes induced by environmental cues remains elusive. In Arabidopsis thaliana, temperature elevation-induced transcriptional activation at thermo-responsive genes entails the chromatin eviction of a histone variant H2A.Z by INO80, which is recruited to these loci via interacting with a key thermomorphogenesis regulator PIF4. Here, we show that both INO80 and the deposition chaperones of another histone variant H3.3 associate with ELF7, a critical component of the transcription elongator PAF1 complex. H3.3 promotes thermomorphogenesis and the high temperature-enhanced RNA Pol II transcription at PIF4 targets, and it is broadly required for the H2A.Z removal-induced gene activation. Reciprocally, INO80 and ELF7 regulate H3.3 deposition, and are necessary for the high temperature-induced H3.3 enrichment at PIF4 targets. Our findings demonstrate close coordination between H2A.Z eviction and H3.3 deposition in gene activation induced by high temperature, and pinpoint the importance of histone variants dynamics in transcriptional regulation.
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Affiliation(s)
- Fengyue Zhao
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Mande Xue
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Huairen Zhang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Hui Li
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Ting Zhao
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Danhua Jiang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
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13
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Yang C, Zhu T, Zhou N, Huang S, Zeng Y, Jiang W, Xie Y, Shen WH, Li L. PIF7-mediated epigenetic reprogramming promotes the transcriptional response to shade in Arabidopsis. EMBO J 2023; 42:e111472. [PMID: 36912149 PMCID: PMC10106985 DOI: 10.15252/embj.2022111472] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 01/28/2023] [Accepted: 02/01/2023] [Indexed: 03/14/2023] Open
Abstract
For shade-intolerant plants, changes in light quality through competition from neighbors trigger shade avoidance syndrome (SAS): a series of morphological and physiological adaptations that are ultimately detrimental to plant health and crop yield. Phytochrome-interacting factor 7 (PIF7) is a major transcriptional regulator of SAS in Arabidopsis; however, how it regulates gene expression is not fully understood. Here, we show that PIF7 directly interacts with the histone chaperone anti-silencing factor 1 (ASF1). The ASF1-deprived asf1ab mutant showed defective shade-induced hypocotyl elongation. Histone regulator homolog A (HIRA), which mediates deposition of the H3.3 variant into chromatin, is also involved in SAS. RNA/ChIP-sequencing analyses identified the role of ASF1 in the direct regulation of a subset of PIF7 target genes. Furthermore, shade-elicited gene activation is accompanied by H3.3 enrichment, which is mediated by the PIF7-ASF1-HIRA regulatory module. Collectively, our data reveal that PIF7 recruits ASF1-HIRA to increase H3.3 incorporation into chromatin to promote gene transcription, thus enabling plants to effectively respond to environmental shade.
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Affiliation(s)
- Chuanwei Yang
- State Key Laboratory of Genetic Engineering, Institute of Plants Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Tongdan Zhu
- State Key Laboratory of Genetic Engineering, Institute of Plants Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Nana Zhou
- State Key Laboratory of Genetic Engineering, Department of Biochemistry, Institute of Plants Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Sha Huang
- State Key Laboratory of Genetic Engineering, Institute of Plants Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Yue Zeng
- State Key Laboratory of Genetic Engineering, Institute of Plants Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Wen Jiang
- State Key Laboratory of Genetic Engineering, Department of Biochemistry, Institute of Plants Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Yu Xie
- State Key Laboratory of Genetic Engineering, Institute of Plants Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Wen-Hui Shen
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
| | - Lin Li
- State Key Laboratory of Genetic Engineering, Institute of Plants Biology, School of Life Sciences, Fudan University, Shanghai, China
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14
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Zhang M, Zhang L, Zhou M, Wang E, Meng B, Li Q, Wang X, Wang Y, Li Q. Anti‑silencing function 1B promotes the progression of pancreatic cancer by activating c‑Myc. Int J Oncol 2023; 62:8. [PMID: 36416310 PMCID: PMC9728557 DOI: 10.3892/ijo.2022.5456] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/31/2022] [Indexed: 11/18/2022] Open
Abstract
The present study aimed to explore the role of histone chaperone anti‑silencing function 1B (ASF1B) in pancreatic cancer and the underlying mechanism. The biological function of ASF1B was investigated in pancreatic cancer cell lines (PANC‑1 and SW1990) and a mouse xenograft model. Chromatin immunoprecipitation was used to detect the effect of ASF1B on the transcriptional activity of c‑Myc. ASF1B was highly expressed in pancreatic adenocarcinoma (PAAD) samples from The Cancer Genome Atlas. ASF1B expression was positively associated with poor survival rates in patients with PAAD. Silencing of ASF1B in PANC‑1 and SW1990 cells inhibited cell proliferation, migration and invasion, and induced apoptosis. Mechanistically, ASF1B increased H3K56 acetylation (H3K56ac) in a CREB‑binding protein (CBP)‑dependent manner. ASF1B promoted H3K56ac at the c‑Myc promoter and increased c‑Myc expression. In PANC‑1 and SW1990 cells, the CBP inhibitor curcumin and the c‑Myc inhibitor 10058‑F4 reversed the promoting effects of ASF1B on cell proliferation, migration and invasion. In the mouse xenograft model, ASF1B silencing inhibited tumor growth, and was associated with low H3K56ac and c‑Myc expression. ASF1B promoted pancreatic cancer progression by activating c‑Myc via CBP‑mediated H3K56ac.
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Affiliation(s)
- Min Zhang
- Department of Hepatobiliary and Pancreatic Surgery, Cancer Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450008
| | - Luyang Zhang
- Department of Hepatobiliary and Pancreatic Surgery, Cancer Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450008
| | - Minghe Zhou
- Department of Hepatobiliary and Pancreatic Surgery, Cancer Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450008
| | - Enze Wang
- Department of Hepatobiliary and Pancreatic Surgery, Cancer Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450008
| | - Bo Meng
- Department of Hepatobiliary and Pancreatic Surgery, Cancer Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450008
| | - Qingjun Li
- Department of Hepatobiliary and Pancreatic Surgery, Cancer Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450008
| | - Xiaoqian Wang
- Department of Hepatobiliary and Pancreatic Surgery, Cancer Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450008
| | - Yunjian Wang
- Department of Hepatobiliary and Pancreatic Surgery, Cancer Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450008
| | - Qiong Li
- Key Laboratory for Medical Tissue Regeneration of Henan Province, Xinxiang Medical College, Xinxiang, Henan 453003, P.R. China
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15
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Liu Y, Wang J, Liu B, Xu ZY. Dynamic regulation of DNA methylation and histone modifications in response to abiotic stresses in plants. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:2252-2274. [PMID: 36149776 DOI: 10.1111/jipb.13368] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
DNA methylation and histone modification are evolutionarily conserved epigenetic modifications that are crucial for the expression regulation of abiotic stress-responsive genes in plants. Dynamic changes in gene expression levels can result from changes in DNA methylation and histone modifications. In the last two decades, how epigenetic machinery regulates abiotic stress responses in plants has been extensively studied. Here, based on recent publications, we review how DNA methylation and histone modifications impact gene expression regulation in response to abiotic stresses such as drought, abscisic acid, high salt, extreme temperature, nutrient deficiency or toxicity, and ultraviolet B exposure. We also review the roles of epigenetic mechanisms in the formation of transgenerational stress memory. We posit that a better understanding of the epigenetic underpinnings of abiotic stress responses in plants may facilitate the design of more stress-resistant or -resilient crops, which is essential for coping with global warming and extreme environments.
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Affiliation(s)
- Yutong Liu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
| | - Jie Wang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
| | - Bao Liu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
| | - Zheng-Yi Xu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, 130024, China
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16
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Gao Z, Zhou Y, He Y. Molecular epigenetic mechanisms for the memory of temperature stresses in plants. J Genet Genomics 2022; 49:991-1001. [PMID: 35870761 DOI: 10.1016/j.jgg.2022.07.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/13/2022] [Accepted: 07/13/2022] [Indexed: 12/29/2022]
Abstract
The sessile plants encounter various stresses; some are prolonged, whereas some others are recurrent. Temperature is crucial for plant growth and development, and plants often encounter adverse high temperature fluctuations (heat stresses) as well as prolonged cold exposure such as seasonal temperature drops in winter when grown in temperate regions. Many plants can remember past temperature stresses to get adapted to adverse local temperature changes to ensure survival and/or reproductive success. Here, we summarize chromatin-based mechanisms underlying acquired thermotolerance or thermomemory in plants and review recent progresses on molecular epigenetic understanding of 'remembering of prolonged cold in winter' or vernalization, a process critical for various over-wintering plants to acquire competence to flower in the coming spring. In addition, perspectives on future study in temperature stress memories of economically-important crops are discussed.
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Affiliation(s)
- Zhaoxu Gao
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Yue Zhou
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Yuehui He
- State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China; Peking University Institute of Advanced Agricultural Sciences, Weifang, Shandong 261325, China.
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17
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Eshel G, Duppen N, Wang G, Oh D, Kazachkova Y, Herzyk P, Amtmann A, Gordon M, Chalifa‐Caspi V, Oscar MA, Bar‐David S, Marshall‐Colon A, Dassanayake M, Barak S. Positive selection and heat-response transcriptomes reveal adaptive features of the Brassicaceae desert model, Anastatica hierochuntica. THE NEW PHYTOLOGIST 2022; 236:1006-1026. [PMID: 35909295 PMCID: PMC9804903 DOI: 10.1111/nph.18411] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Plant adaptation to a desert environment and its endemic heat stress is poorly understood at the molecular level. The naturally heat-tolerant Brassicaceae species Anastatica hierochuntica is an ideal extremophyte model to identify genetic adaptations that have evolved to allow plants to tolerate heat stress and thrive in deserts. We generated an A. hierochuntica reference transcriptome and identified extremophyte adaptations by comparing Arabidopsis thaliana and A. hierochuntica transcriptome responses to heat, and detecting positively selected genes in A. hierochuntica. The two species exhibit similar transcriptome adjustment in response to heat and the A. hierochuntica transcriptome does not exist in a constitutive heat 'stress-ready' state. Furthermore, the A. hierochuntica global transcriptome as well as heat-responsive orthologs, display a lower basal and higher heat-induced expression than in A. thaliana. Genes positively selected in multiple extremophytes are associated with stomatal opening, nutrient acquisition, and UV-B induced DNA repair while those unique to A. hierochuntica are consistent with its photoperiod-insensitive, early-flowering phenotype. We suggest that evolution of a flexible transcriptome confers the ability to quickly react to extreme diurnal temperature fluctuations characteristic of a desert environment while positive selection of genes involved in stress tolerance and early flowering could facilitate an opportunistic desert lifestyle.
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Affiliation(s)
- Gil Eshel
- Albert Katz International School for Desert StudiesBen‐Gurion University of the NegevSde Boqer CampusMidreshet Ben‐Gurion8499000Israel
| | - Nick Duppen
- Albert Katz International School for Desert StudiesBen‐Gurion University of the NegevSde Boqer CampusMidreshet Ben‐Gurion8499000Israel
| | - Guannan Wang
- Department of Biological SciencesLouisiana State UniversityBaton RougeLA70803USA
| | - Dong‐Ha Oh
- Department of Biological SciencesLouisiana State UniversityBaton RougeLA70803USA
| | - Yana Kazachkova
- Albert Katz International School for Desert StudiesBen‐Gurion University of the NegevSde Boqer CampusMidreshet Ben‐Gurion8499000Israel
| | - Pawel Herzyk
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowG12 8QQUK
| | - Anna Amtmann
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowG12 8QQUK
| | - Michal Gordon
- Bioinformatics Core Facility, The National Institute for Biotechnology in the NegevBen‐Gurion University of the NegevBeer‐Sheva8410501Israel
| | - Vered Chalifa‐Caspi
- Bioinformatics Core Facility, The National Institute for Biotechnology in the NegevBen‐Gurion University of the NegevBeer‐Sheva8410501Israel
| | - Michelle Arland Oscar
- Blaustein Center for Scientific CooperationBen‐Gurion University of the NegevSde Boqer CampusMidreshet Ben‐Gurion8499000Israel
| | - Shirli Bar‐David
- Mitrani Department of Desert Ecology, Jacob Blaustein Institutes for Desert ResearchBen‐Gurion University of the NegevSde Boqer CampusMidreshet Ben‐Gurion8499000Israel
| | - Amy Marshall‐Colon
- Department of Plant BiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
| | - Maheshi Dassanayake
- Department of Biological SciencesLouisiana State UniversityBaton RougeLA70803USA
| | - Simon Barak
- French Associates' Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert ResearchBen‐Gurion University of the NegevSde Boqer CampusMidreshet Ben‐Gurion8499000Israel
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18
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Zhang Y, Xia G, Sheng L, Chen M, Hu C, Ye Y, Yue X, Chen S, OuYang W, Xia Z. Regulatory roles of selective autophagy through targeting of native proteins in plant adaptive responses. PLANT CELL REPORTS 2022; 41:2125-2138. [PMID: 35922498 DOI: 10.1007/s00299-022-02910-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/24/2022] [Indexed: 06/15/2023]
Abstract
Selective autophagy functions as a regulatory mechanism by targeting native and functional proteins to ensure their proper levels and activities in plant adaptive responses. Autophagy is a cellular degradation and recycling pathway with a key role in cellular homeostasis and metabolism. Autophagy is initiated with the biogenesis of autophagosomes, which fuse with the lysosomes or vacuoles to release their contents for degradation. Under nutrient starvation or other adverse environmental conditions, autophagy usually targets unwanted or damaged proteins, organelles and other cellular components for degradation and recycling to promote cell survival. Over the past decade, however, a substantial number of studies have reported that autophagy in plants also functions as a regulatory mechanism by targeting enzymes, structural and regulatory proteins that are not necessarily damaged or dysfunctional to ensure their proper abundance and function to facilitate cellular changes required for response to endogenous and environmental conditions. During plant-pathogen interactions in particular, selective autophagy targets specific pathogen components as a defense mechanism and pathogens also utilize autophagy to target functional host factors to suppress defense mechanisms. Autophagy also targets native and functional protein regulators of plant heat stress memory, hormone signaling, and vesicle trafficking associated with plant responses to abiotic and other conditions. In this review, we discuss advances in the regulatory roles of selective autophagy through targeting of native proteins in plant adaptive responses, what questions remain and how further progress in the analysis of these special regulatory roles of autophagy can help understand biological processes important to plants.
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Affiliation(s)
- Yan Zhang
- Department of Landscape and Horticulture, Ecology College, Lishui University, Lishui, Zhejiang, China.
| | - Gengshou Xia
- Department of Landscape and Horticulture, Ecology College, Lishui University, Lishui, Zhejiang, China
| | - Li Sheng
- Department of Landscape and Horticulture, Ecology College, Lishui University, Lishui, Zhejiang, China
| | - Mingjue Chen
- Department of Landscape and Horticulture, Ecology College, Lishui University, Lishui, Zhejiang, China
| | - Chenyang Hu
- Department of Landscape and Horticulture, Ecology College, Lishui University, Lishui, Zhejiang, China
| | - Yule Ye
- Department of Landscape and Horticulture, Ecology College, Lishui University, Lishui, Zhejiang, China
| | - Xiaoyan Yue
- Department of Landscape and Horticulture, Ecology College, Lishui University, Lishui, Zhejiang, China
| | - Shaocong Chen
- Department of Landscape and Horticulture, Ecology College, Lishui University, Lishui, Zhejiang, China
| | - Wenwu OuYang
- Department of Landscape and Horticulture, Ecology College, Lishui University, Lishui, Zhejiang, China
| | - Zhenkai Xia
- China Medical University -The Queen's University of Belfast Joint College, China Medical University, Shenyang, Liaoning, China
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19
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Singh M, Singh A, Yadav N, Yadav DK. Current perspectives of ubiquitination and SUMOylation in abiotic stress tolerance in plants. FRONTIERS IN PLANT SCIENCE 2022; 13:993194. [PMID: 36212351 PMCID: PMC9533872 DOI: 10.3389/fpls.2022.993194] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/16/2022] [Indexed: 06/16/2023]
Abstract
Post-translational modification (PTM) is a critical and rapid mechanism to regulate all the major cellular processes through the modification of diverse protein substrates. Substrate-specific covalent attachment of ubiquitin and Small Ubiquitin-Like Modifier (SUMO) with the target proteins, known as ubiquitination and SUMOylation, respectively, are crucial PTMs that regulate almost every process in the cell by modulating the stability and fidelity of the proteins. Ubiquitination and SUMOylation play a very significant role to provide tolerance to the plants in adverse environmental conditions by activating/deactivating the pre-existing proteins to a great extent. We reviewed the importance of ubiquitination and SUMOylation in plants, implicating its prospects in various abiotic stress regulations. An exhaustive study of molecular mechanisms of ubiquitination and SUMOylation of plant proteins and their role will contribute to the understanding of physiology underlying mitigation of the abiotic stresses and survival in plants. It will be helpful to strategize the improvement of crops for abiotic stress tolerance.
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Affiliation(s)
- Madhavi Singh
- Plant Molecular Biology and Genetic Engineering Laboratory, Department of Botany, University of Allahabad, Prayagraj, India
| | - Ananya Singh
- Plant Molecular Biology and Genetic Engineering Laboratory, Department of Botany, University of Allahabad, Prayagraj, India
| | - Neelam Yadav
- Department of Botany, University of Allahabad, Prayagraj, India
| | - Dinesh Kumar Yadav
- Plant Molecular Biology and Genetic Engineering Laboratory, Department of Botany, University of Allahabad, Prayagraj, India
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20
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Halder K, Chaudhuri A, Abdin MZ, Majee M, Datta A. Chromatin-Based Transcriptional Reprogramming in Plants under Abiotic Stresses. PLANTS (BASEL, SWITZERLAND) 2022; 11:1449. [PMID: 35684223 PMCID: PMC9182740 DOI: 10.3390/plants11111449] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/23/2022] [Accepted: 03/23/2022] [Indexed: 06/15/2023]
Abstract
Plants' stress response machinery is characterized by an intricate network of signaling cascades that receive and transmit environmental cues and ultimately trigger transcriptional reprogramming. The family of epigenetic regulators that are the key players in the stress-induced signaling cascade comprise of chromatin remodelers, histone modifiers, DNA modifiers and regulatory non-coding RNAs. Changes in the histone modification and DNA methylation lead to major alterations in the expression level and pattern of stress-responsive genes to adjust with abiotic stress conditions namely heat, cold, drought and salinity. The spotlight of this review falls primarily on the chromatin restructuring under severe abiotic stresses, crosstalk between epigenetic regulators along with a brief discussion on stress priming in plants.
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Affiliation(s)
- Koushik Halder
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India; (K.H.); (A.C.); (M.M.)
- Centre for Transgenic Plant Development, Department of Biotechnology, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India;
| | - Abira Chaudhuri
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India; (K.H.); (A.C.); (M.M.)
| | - Malik Z. Abdin
- Centre for Transgenic Plant Development, Department of Biotechnology, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India;
| | - Manoj Majee
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India; (K.H.); (A.C.); (M.M.)
| | - Asis Datta
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India; (K.H.); (A.C.); (M.M.)
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21
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Khan A, Khan V, Pandey K, Sopory SK, Sanan-Mishra N. Thermo-Priming Mediated Cellular Networks for Abiotic Stress Management in Plants. FRONTIERS IN PLANT SCIENCE 2022; 13:866409. [PMID: 35646001 PMCID: PMC9136941 DOI: 10.3389/fpls.2022.866409] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 02/25/2022] [Indexed: 05/05/2023]
Abstract
Plants can adapt to different environmental conditions and can survive even under very harsh conditions. They have developed elaborate networks of receptors and signaling components, which modulate their biochemistry and physiology by regulating the genetic information. Plants also have the abilities to transmit information between their different parts to ensure a holistic response to any adverse environmental challenge. One such phenomenon that has received greater attention in recent years is called stress priming. Any milder exposure to stress is used by plants to prime themselves by modifying various cellular and molecular parameters. These changes seem to stay as memory and prepare the plants to better tolerate subsequent exposure to severe stress. In this review, we have discussed the various ways in which plants can be primed and illustrate the biochemical and molecular changes, including chromatin modification leading to stress memory, with major focus on thermo-priming. Alteration in various hormones and their subsequent role during and after priming under various stress conditions imposed by changing climate conditions are also discussed.
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Affiliation(s)
| | | | | | | | - Neeti Sanan-Mishra
- Plant RNAi Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
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22
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Perrella G, Bäurle I, van Zanten M. Epigenetic regulation of thermomorphogenesis and heat stress tolerance. THE NEW PHYTOLOGIST 2022; 234:1144-1160. [PMID: 35037247 DOI: 10.1111/nph.17970] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Many environmental conditions fluctuate and organisms need to respond effectively. This is especially true for temperature cues that can change in minutes to seasons and often follow a diurnal rhythm. Plants cannot migrate and most cannot regulate their temperature. Therefore, a broad array of responses have evolved to deal with temperature cues from freezing to heat stress. A particular response to mildly elevated temperatures is called thermomorphogenesis, a suite of morphological adaptations that includes thermonasty, formation of thin leaves and elongation growth of petioles and hypocotyl. Thermomorphogenesis allows for optimal performance in suboptimal temperature conditions by enhancing the cooling capacity. When temperatures rise further, heat stress tolerance mechanisms can be induced that enable the plant to survive the stressful temperature, which typically comprises cellular protection mechanisms and memory thereof. Induction of thermomorphogenesis, heat stress tolerance and stress memory depend on gene expression regulation, governed by diverse epigenetic processes. In this Tansley review we update on the current knowledge of epigenetic regulation of heat stress tolerance and elevated temperature signalling and response, with a focus on thermomorphogenesis regulation and heat stress memory. In particular we highlight the emerging role of H3K4 methylation marks in diverse temperature signalling pathways.
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Affiliation(s)
- Giorgio Perrella
- Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Trisaia Research Centre, S.S. Ionica, km 419.5, 75026, Rotondella (Matera), Italy
| | - Isabel Bäurle
- Institute for Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476, Potsdam, Germany
| | - Martijn van Zanten
- Molecular Plant Physiology, Institute of Environmental Biology, Utrecht University, Padualaan 8, 3584 CH, Utrecht, the Netherlands
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Haider S, Iqbal J, Naseer S, Shaukat M, Abbasi BA, Yaseen T, Zahra SA, Mahmood T. Unfolding molecular switches in plant heat stress resistance: A comprehensive review. PLANT CELL REPORTS 2022; 41:775-798. [PMID: 34401950 DOI: 10.1007/s00299-021-02754-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
Plant heat stress response is a multi-factorial trait that is precisely regulated by the complex web of transcription factors from various families that modulate heat stress responsive gene expression. Global warming due to climate change affects plant growth and development throughout its life cycle. Adds to this, the frequent occurrence of heat waves is drastically reducing the global crop yield. Molecular plant scientists can help crop breeders by providing genetic markers associated with stress resistance. Plant heat stress response (HSR), however, is a multi-factorial trait and using a single stress resistance trait might not be ideal to develop thermotolerant crops. Transcription factors participate in regulation of plant biological processes and environmental stress responses. Recent studies have revealed that plant HSR is precisely regulated by the complex web of transcription factors from various families. These transcription factors enhance plant heat stress tolerance by regulating the expression level of several stress-responsive genes independently or in cross talk with different other transcription factors. This review explores how signaling pathways triggered by heat stress are regulated by multiple transcription factor families. To our knowledge, we for the first time analyze the role of major transcription factor families in plant HSR along with their regulatory mechanisms. In the end, we will also discuss the potential of emerging technologies to improve thermotolerance in plants.
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Affiliation(s)
- Saqlain Haider
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Javed Iqbal
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan.
- Department of Botany, Bacha Khan University, Charsadda, Khyber Pakhtunkhwa, Pakistan.
| | - Sana Naseer
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Muzzafar Shaukat
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Banzeer Ahsan Abbasi
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Tabassum Yaseen
- Department of Botany, Bacha Khan University, Charsadda, Khyber Pakhtunkhwa, Pakistan
| | - Syeda Anber Zahra
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan
| | - Tariq Mahmood
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-I-Azam University, Islamabad, 45320, Pakistan.
- Pakistan Academy of Sciences, Islamabad, Pakistan.
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Post-translational modification: a strategic response to high temperature in plants. ABIOTECH 2022; 3:49-64. [PMID: 36304199 PMCID: PMC9590526 DOI: 10.1007/s42994-021-00067-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 12/22/2021] [Indexed: 11/21/2022]
Abstract
With the increasing global warming, high-temperature stress is affecting plant growth and development with greater frequency. Therefore, an increasing number of studies examining the mechanism of temperature response contribute to a more optimal understanding of plant growth under environmental pressure. Post-translational modification (PTM) provides the rapid reconnection of transcriptional programs including transcription factors and signaling proteins. It is vital that plants quickly respond to changes in the environment in order to survive under stressful situations. Herein, we discuss several types of PTMs that occur in response to warm-temperature and high-temperature stress, including ubiquitination, SUMOylation, phosphorylation, histone methylation, and acetylation. This review provides a valuable resolution to this issue to enable increased crop productivity at high temperatures.
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Haider S, Iqbal J, Naseer S, Yaseen T, Shaukat M, Bibi H, Ahmad Y, Daud H, Abbasi NL, Mahmood T. Molecular mechanisms of plant tolerance to heat stress: current landscape and future perspectives. PLANT CELL REPORTS 2021; 40:2247-2271. [PMID: 33890138 DOI: 10.1007/s00299-021-02696-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
We summarize recent studies focusing on the molecular basis of plant heat stress response (HSR), how HSR leads to thermotolerance, and promote plant adaptation to recurring heat stress events. The global crop productivity is facing unprecedented threats due to climate change as high temperature negatively influences plant growth and metabolism. Owing to their sessile nature, plants have developed complex signaling networks which enable them to perceive changes in ambient temperature. This in turn activates a suite of molecular changes that promote plant survival and reproduction under adverse conditions. Deciphering these mechanisms is an important task, as this could facilitate development of molecular markers, which could be ultimately used to breed thermotolerant crop cultivars. In current article, we summarize mechanisms involve in plant heat stress acclimation with special emphasis on advances related to heat stress perception, heat-induced signaling, heat stress-responsive gene expression and thermomemory that promote plant adaptation to short- and long-term-recurring heat-stress events. In the end, we will discuss impact of emerging technologies that could facilitate the development of heat stress-tolerant crop cultivars.
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Affiliation(s)
- Saqlain Haider
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Javed Iqbal
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
- Center for Plant Sciences and Biodiversity, University of Swat, Kanju, 19201, Pakistan.
| | - Sana Naseer
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Tabassum Yaseen
- Department of Botany, Bacha Khan University, Charsadda, Khyber Pakhtunkhwa, Pakistan
| | - Muzaffar Shaukat
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Haleema Bibi
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Yumna Ahmad
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Hina Daud
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Nayyab Laiba Abbasi
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Tariq Mahmood
- Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
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Blancett LT, Runge KA, Reyes GM, Kennedy LA, Jackson SC, Scheuermann SE, Harmon MB, Williams JC, Shearer G. Deletion of the Stress Response Gene DDR48 from Histoplasma capsulatum Increases Sensitivity to Oxidative Stress, Increases Susceptibility to Antifungals, and Decreases Fitness in Macrophages. J Fungi (Basel) 2021; 7:981. [PMID: 34829268 PMCID: PMC8617954 DOI: 10.3390/jof7110981] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 11/21/2022] Open
Abstract
The stress response gene DDR48 has been characterized in Saccharomyces cerevisiae and Candida albicans to be involved in combating various cellular stressors, from oxidative agents to antifungal compounds. Surprisingly, the biological function of DDR48 has yet to be identified, though it is likely an important part of the stress response. To gain insight into its function, we characterized DDR48 in the dimorphic fungal pathogen Histoplasma capsulatum. Transcriptional analyses showed preferential expression of DDR48 in the mycelial phase. Induction of DDR48 in Histoplasma yeasts developed after treatment with various cellular stress compounds. We generated a ddr48∆ deletion mutant to further characterize DDR48 function. Loss of DDR48 alters the transcriptional profile of the oxidative stress response and membrane synthesis pathways. Treatment with ROS or antifungal compounds reduced survival of ddr48∆ yeasts compared to controls, consistent with an aberrant cellular stress response. In addition, we infected RAW 264.7 macrophages with DDR48-expressing and ddr48∆ yeasts and observed a 50% decrease in recovery of ddr48∆ yeasts compared to wild-type yeasts. Loss of DDR48 function results in numerous negative effects in Histoplasma yeasts, highlighting its role as a key player in the global sensing and response to cellular stress by fungi.
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Affiliation(s)
- Logan T. Blancett
- Center for Molecular and Cellular Biology, The University of Southern Mississippi, Hattiesburg, MS 39406, USA; (K.A.R.); (G.M.R.); (L.A.K.); (S.C.J.); (S.E.S.); (M.B.H.); (J.C.W.); (G.S.J.)
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Kauri A. Runge
- Center for Molecular and Cellular Biology, The University of Southern Mississippi, Hattiesburg, MS 39406, USA; (K.A.R.); (G.M.R.); (L.A.K.); (S.C.J.); (S.E.S.); (M.B.H.); (J.C.W.); (G.S.J.)
- ThruPore Technologies, Inc., New Castle, DE 19720, USA
| | - Gabriella M. Reyes
- Center for Molecular and Cellular Biology, The University of Southern Mississippi, Hattiesburg, MS 39406, USA; (K.A.R.); (G.M.R.); (L.A.K.); (S.C.J.); (S.E.S.); (M.B.H.); (J.C.W.); (G.S.J.)
| | - Lauren A. Kennedy
- Center for Molecular and Cellular Biology, The University of Southern Mississippi, Hattiesburg, MS 39406, USA; (K.A.R.); (G.M.R.); (L.A.K.); (S.C.J.); (S.E.S.); (M.B.H.); (J.C.W.); (G.S.J.)
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Sydney C. Jackson
- Center for Molecular and Cellular Biology, The University of Southern Mississippi, Hattiesburg, MS 39406, USA; (K.A.R.); (G.M.R.); (L.A.K.); (S.C.J.); (S.E.S.); (M.B.H.); (J.C.W.); (G.S.J.)
| | - Sarah E. Scheuermann
- Center for Molecular and Cellular Biology, The University of Southern Mississippi, Hattiesburg, MS 39406, USA; (K.A.R.); (G.M.R.); (L.A.K.); (S.C.J.); (S.E.S.); (M.B.H.); (J.C.W.); (G.S.J.)
- Mississippi INBRE Research Scholars Program, Mississippi INBRE, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
- High Containment Research Performance Core, Tulane National Primate Research Center, Covington, LA 70433, USA
| | - Mallory B. Harmon
- Center for Molecular and Cellular Biology, The University of Southern Mississippi, Hattiesburg, MS 39406, USA; (K.A.R.); (G.M.R.); (L.A.K.); (S.C.J.); (S.E.S.); (M.B.H.); (J.C.W.); (G.S.J.)
- Mississippi INBRE Research Scholars Program, Mississippi INBRE, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - Jamease C. Williams
- Center for Molecular and Cellular Biology, The University of Southern Mississippi, Hattiesburg, MS 39406, USA; (K.A.R.); (G.M.R.); (L.A.K.); (S.C.J.); (S.E.S.); (M.B.H.); (J.C.W.); (G.S.J.)
- Mississippi INBRE Research Scholars Program, Mississippi INBRE, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - Glenmore Shearer
- Center for Molecular and Cellular Biology, The University of Southern Mississippi, Hattiesburg, MS 39406, USA; (K.A.R.); (G.M.R.); (L.A.K.); (S.C.J.); (S.E.S.); (M.B.H.); (J.C.W.); (G.S.J.)
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Zioutopoulou A, Patitaki E, Xu T, Kaiserli E. The Epigenetic Mechanisms Underlying Thermomorphogenesis and Heat Stress Responses in Arabidopsis. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10112439. [PMID: 34834802 PMCID: PMC8624032 DOI: 10.3390/plants10112439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/05/2021] [Accepted: 11/09/2021] [Indexed: 05/28/2023]
Abstract
Integration of temperature cues is crucial for plant survival and adaptation. Global warming is a prevalent issue, especially in modern agriculture, since the global rise in average temperature is expected to impact crop productivity worldwide. Hence, better understanding of the mechanisms by which plants respond to warmer temperatures is very important. This review focuses on the epigenetic mechanisms implicated in plant responses to high temperature and distinguishes the different epigenetic events that occur at warmer average temperatures, leading to thermomorphogenic responses, or subjected to extreme warm temperatures, leading to heat stress.
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Sedaghatmehr M, Thirumalaikumar VP, Kamranfar I, Schulz K, Mueller-Roeber B, Sampathkumar A, Balazadeh S. Autophagy complements metalloprotease FtsH6 in degrading plastid heat shock protein HSP21 during heat stress recovery. JOURNAL OF EXPERIMENTAL BOTANY 2021:erab304. [PMID: 34185061 DOI: 10.1093/jxb/erab304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Indexed: 06/13/2023]
Abstract
Moderate and temporary heat stresses (HS) prime plants to tolerate, and survive, a subsequent severe HS. Such acquired thermotolerance can be maintained for several days under normal growth conditions, and create a HS memory. We recently demonstrated that plastid-localized small heat shock protein HSP21 is a key component of HS memory in Arabidopsis thaliana. A sustained high abundance of HSP21 during the HS recovery phase extends HS memory. The level of HSP21 is negatively controlled by plastid-localized metalloprotease FtsH6 during HS recovery. Here, we demonstrate that autophagy, a cellular recycling mechanism, exerts additional control over HSP21 degradation. Genetic and chemical disruption of both, metalloprotease activity and autophagy trigger superior HSP21 accumulation, thereby improving memory. Furthermore, we provide evidence that autophagy cargo receptor ATG8-INTERACTING PROTEIN1 (ATI1) is associated with HS memory. ATI1 bodies colocalize with both autophagosomes and HSP21, and their abundance and transport to the vacuole increase during HS recovery. Together, our results provide new insights into the control module for the regulation of HS memory, in which two distinct protein degradation pathways act in concert to degrade HSP21, thereby enabling cells to recover from the HS effect at the cost of reducing the HS memory.
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Affiliation(s)
- Mastoureh Sedaghatmehr
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Venkatesh P Thirumalaikumar
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße
| | - Iman Kamranfar
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße
| | - Karina Schulz
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Bernd Mueller-Roeber
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße
| | - Arun Sampathkumar
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Salma Balazadeh
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- Leiden University, PO Box 9500, 2300 RA, Leiden, The Netherlands
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29
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Insights into the roles of histone chaperones in nucleosome assembly and disassembly in virus infection. Virus Res 2021; 297:198395. [PMID: 33737155 DOI: 10.1016/j.virusres.2021.198395] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 11/23/2022]
Abstract
Nucleosomes are assembled or disassembled with the aid of histone chaperones in a cell. Viruses can exist either as minichromosomes/episomes or can integrate into the host genome and in both the cases the viral proteins interact and manipulate the cellular nucleosome assembly machinery to ensure their survival and propagation. Recent studies have provided insight into the mechanism and role of histone chaperones in nucleosome assembly and disassembly on the virus genome. Further, the interactions between viral proteins and histone chaperones have been implicated in the integration of the virus genome into the host genome. This review highlights the recent progress and future challenges in understanding the role of histone chaperones in viruses with DNA or RNA genome and their role in governing viral pathogenesis.
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Multifaceted Chromatin Structure and Transcription Changes in Plant Stress Response. Int J Mol Sci 2021; 22:ijms22042013. [PMID: 33670556 PMCID: PMC7922328 DOI: 10.3390/ijms22042013] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 01/06/2023] Open
Abstract
Sessile plants are exposed throughout their existence to environmental abiotic and biotic stress factors, such as cold, heat, salinity, drought, dehydration, submergence, waterlogging, and pathogen infection. Chromatin organization affects genome stability, and its dynamics are crucial in plant stress responses. Chromatin dynamics are epigenetically regulated and are required for stress-induced transcriptional regulation or reprogramming. Epigenetic regulators facilitate the phenotypic plasticity of development and the survival and reproduction of plants in unfavorable environments, and they are highly diversified, including histone and DNA modifiers, histone variants, chromatin remodelers, and regulatory non-coding RNAs. They contribute to chromatin modifications, remodeling and dynamics, and constitute a multilayered and multifaceted circuitry for sophisticated and robust epigenetic regulation of plant stress responses. However, this complicated epigenetic regulatory circuitry creates challenges for elucidating the common or differential roles of chromatin modifications for transcriptional regulation or reprogramming in different plant stress responses. Particularly, interacting chromatin modifications and heritable stress memories are difficult to identify in the aspect of chromatin-based epigenetic regulation of transcriptional reprogramming and memory. Therefore, this review discusses the recent updates from the three perspectives—stress specificity or dependence of transcriptional reprogramming, the interplay of chromatin modifications, and transcriptional stress memory in plants. This helps solidify our knowledge on chromatin-based transcriptional reprogramming for plant stress response and memory.
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Bhadouriya SL, Mehrotra S, Basantani MK, Loake GJ, Mehrotra R. Role of Chromatin Architecture in Plant Stress Responses: An Update. FRONTIERS IN PLANT SCIENCE 2021; 11:603380. [PMID: 33510748 PMCID: PMC7835326 DOI: 10.3389/fpls.2020.603380] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 12/07/2020] [Indexed: 05/08/2023]
Abstract
Sessile plants possess an assembly of signaling pathways that perceive and transmit environmental signals, ultimately resulting in transcriptional reprogramming. Histone is a key feature of chromatin structure. Numerous histone-modifying proteins act under different environmental stress conditions to help modulate gene expression. DNA methylation and histone modification are crucial for genome reprogramming for tissue-specific gene expression and global gene silencing. Different classes of chromatin remodelers including SWI/SNF, ISWI, INO80, and CHD are reported to act upon chromatin in different organisms, under diverse stresses, to convert chromatin from a transcriptionally inactive to a transcriptionally active state. The architecture of chromatin at a given promoter is crucial for determining the transcriptional readout. Further, the connection between somatic memory and chromatin modifications may suggest a mechanistic basis for a stress memory. Studies have suggested that there is a functional connection between changes in nuclear organization and stress conditions. In this review, we discuss the role of chromatin architecture in different stress responses and the current evidence on somatic, intergenerational, and transgenerational stress memory.
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Affiliation(s)
- Sneha Lata Bhadouriya
- Department of Biological Sciences, Birla Institute of Technology and Sciences, Sancoale, India
| | - Sandhya Mehrotra
- Department of Biological Sciences, Birla Institute of Technology and Sciences, Sancoale, India
| | - Mahesh K. Basantani
- Institute of Bioscience and Technology, Shri Ramswaroop Memorial University, Lucknow, India
| | - Gary J. Loake
- School of Biological Sciences, Institute of Molecular Plant Sciences, University of Edinburg, Edinburg, United Kingdom
| | - Rajesh Mehrotra
- Department of Biological Sciences, Birla Institute of Technology and Sciences, Sancoale, India
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Sharma M, Jamsheer K. M, Shukla BN, Sharma M, Awasthi P, Mahtha SK, Yadav G, Laxmi A. Arabidopsis Target of Rapamycin Coordinates With Transcriptional and Epigenetic Machinery to Regulate Thermotolerance. FRONTIERS IN PLANT SCIENCE 2021; 12:741965. [PMID: 34777423 PMCID: PMC8581614 DOI: 10.3389/fpls.2021.741965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/01/2021] [Indexed: 05/08/2023]
Abstract
Global warming exhibits profound effects on plant fitness and productivity. To withstand stress, plants sacrifice their growth and activate protective stress responses for ensuring survival. However, the switch between growth and stress is largely elusive. In the past decade, the role of the target of rapamycin (TOR) linking energy and stress signalling is emerging. Here, we have identified an important role of Glucose (Glc)-TOR signalling in plant adaptation to heat stress (HS). Glc via TOR governs the transcriptome reprogramming of a large number of genes involved in heat stress protection. Downstream to Glc-TOR, the E2Fa signalling module regulates the transcription of heat shock factors through direct recruitment of E2Fa onto their promoter regions. Also, Glc epigenetically regulates the transcription of core HS signalling genes in a TOR-dependent manner. TOR acts in concert with p300/CREB HISTONE ACETYLTRANSFERASE1 (HAC1) and dictates the epigenetic landscape of HS loci to regulate thermotolerance. Arabidopsis plants defective in TOR and HAC1 exhibited reduced thermotolerance with a decrease in the expression of core HS signalling genes. Together, our findings reveal a mechanistic framework in which Glc-TOR signalling through different modules integrates stress and energy signalling to regulate thermotolerance.
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Plant Responses to Heat Stress: Physiology, Transcription, Noncoding RNAs, and Epigenetics. Int J Mol Sci 2020; 22:ijms22010117. [PMID: 33374376 PMCID: PMC7795586 DOI: 10.3390/ijms22010117] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/14/2020] [Accepted: 11/20/2020] [Indexed: 01/05/2023] Open
Abstract
Global warming has increased the frequency of extreme high temperature events. High temperature is a major abiotic stress that limits the growth and production of plants. Therefore, the plant response to heat stress (HS) has been a focus of research. However, the plant response to HS involves complex physiological traits and molecular or gene networks that are not fully understood. Here, we review recent progress in the physiological (photosynthesis, cell membrane thermostability, oxidative damage, and others), transcriptional, and post-transcriptional (noncoding RNAs) regulation of the plant response to HS. We also summarize advances in understanding of the epigenetic regulation (DNA methylation, histone modification, and chromatin remodeling) and epigenetic memory underlying plant–heat interactions. Finally, we discuss the challenges and opportunities of future research in the plant response to HS.
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Probst AV, Desvoyes B, Gutierrez C. Similar yet critically different: the distribution, dynamics and function of histone variants. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:5191-5204. [PMID: 32392582 DOI: 10.1093/jxb/eraa230] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 05/06/2020] [Indexed: 05/23/2023]
Abstract
Organization of the genetic information into chromatin plays an important role in the regulation of all DNA template-based reactions. The incorporation of different variant versions of the core histones H3, H2A, and H2B, or the linker histone H1 results in nucleosomes with unique properties. Histone variants can differ by only a few amino acids or larger protein domains and their incorporation may directly affect nucleosome stability and higher order chromatin organization or indirectly influence chromatin function through histone variant-specific binding partners. Histone variants employ dedicated histone deposition machinery for their timely and locus-specific incorporation into chromatin. Plants have evolved specific histone variants with unique expression patterns and features. In this review, we discuss our current knowledge on histone variants in Arabidopsis, their mode of deposition, variant-specific post-translational modifications, and genome-wide distribution, as well as their role in defining different chromatin states.
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Affiliation(s)
- Aline V Probst
- Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
| | - Bénédicte Desvoyes
- Centro de Biologia Molecular Severo Ochoa, CSIC-UAM, Cantoblanco, Madrid, Spain
| | - Crisanto Gutierrez
- Centro de Biologia Molecular Severo Ochoa, CSIC-UAM, Cantoblanco, Madrid, Spain
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Bäurle I, Trindade I. Chromatin regulation of somatic abiotic stress memory. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:5269-5279. [PMID: 32076719 DOI: 10.1093/jxb/eraa098] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/19/2020] [Indexed: 05/20/2023]
Abstract
In nature, plants are often subjected to periods of recurrent environmental stress that can strongly affect their development and productivity. To cope with these conditions, plants can remember a previous stress, which allows them to respond more efficiently to a subsequent stress, a phenomenon known as priming. This ability can be maintained at the somatic level for a few days or weeks after the stress is perceived, suggesting that plants can store information of a past stress during this recovery phase. While the immediate responses to a single stress event have been extensively studied, knowledge on priming effects and how stress memory is stored is still scarce. At the molecular level, memory of a past condition often involves changes in chromatin structure and organization, which may be maintained independently from transcription. In this review, we will summarize the most recent developments in the field and discuss how different levels of chromatin regulation contribute to priming and plant abiotic stress memory.
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Affiliation(s)
- Isabel Bäurle
- Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Inês Trindade
- Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
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Min Y, Frost JM, Choi Y. Gametophytic Abortion in Heterozygotes but Not in Homozygotes: Implied Chromosome Rearrangement during T-DNA Insertion at the ASF1 Locus in Arabidopsis. Mol Cells 2020; 43:448-458. [PMID: 32259880 PMCID: PMC7264478 DOI: 10.14348/molcells.2020.2290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/05/2020] [Accepted: 03/08/2020] [Indexed: 12/24/2022] Open
Abstract
T-DNA insertional mutations in Arabidopsis genes have conferred huge benefits to the research community, greatly facilitating gene function analyses. However, the insertion process can cause chromosomal rearrangements. Here, we show an example of a likely rearrangement following T-DNA insertion in the Anti-Silencing Function 1B (ASF1B) gene locus on Arabidopsis chromosome 5, so that the phenotype was not relevant to the gene of interest, ASF1B. ASF1 is a histone H3/H4 chaperone involved in chromatin remodeling in the sporophyte and during reproduction. Plants that were homozygous for mutant alleles asf1a or asf1b were developmentally normal. However, following self-fertilization of double heterozygotes (ASF1A/asf1a ASF1B/asf1b, hereafter AaBb), defects were visible in both male and female gametes. Half of the AaBb and aaBb ovules displayed arrested embryo sacs with functional megaspore identity. Similarly, half of the AaBb and aaBb pollen grains showed centromere defects, resulting in pollen abortion at the bi-cellular stage of the male gametophyte. However, inheritance of the mutant allele in a given gamete did not solely determine the abortion phenotype. Introducing functional ASF1B failed to rescue the AaBb- and aaBb- mediated abortion, suggesting that heterozygosity in the ASF1B gene causes gametophytic defects, rather than the loss of ASF1. The presence of reproductive defects in heterozygous mutants but not in homozygotes, and the characteristic all-or-nothing pollen viability within tetrads, were both indicative of commonly-observed T-DNA-mediated translocation activity for this allele. Our observations reinforce the importance of complementation tests in assigning gene function using reverse genetics.
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Affiliation(s)
- Yunsook Min
- Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Jennifer M. Frost
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 9470, USA
- Present address: Genomics and Child Health, Queen Mary University of London, London E1 2AT, United Kingdom
| | - Yeonhee Choi
- Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
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Ding Y, Shi Y, Yang S. Molecular Regulation of Plant Responses to Environmental Temperatures. MOLECULAR PLANT 2020; 13:544-564. [PMID: 32068158 DOI: 10.1016/j.molp.2020.02.004] [Citation(s) in RCA: 282] [Impact Index Per Article: 70.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/10/2020] [Accepted: 02/11/2020] [Indexed: 05/19/2023]
Abstract
Temperature is a key factor governing the growth and development, distribution, and seasonal behavior of plants. The entire plant life cycle is affected by environmental temperatures. Plants grow rapidly and exhibit specific changes in morphology under mild average temperature conditions, a response termed thermomorphogenesis. When exposed to chilling or moist chilling low temperatures, flowering or seed germination is accelerated in some plant species; these processes are known as vernalization and cold stratification, respectively. Interestingly, once many temperate plants are exposed to chilling temperatures for some time, they can acquire the ability to resist freezing stress, a process termed cold acclimation. In the face of global climate change, heat stress has emerged as a frequent challenge, which adversely affects plant growth and development. In this review, we summarize and discuss recent progress in dissecting the molecular mechanisms regulating plant thermomorphogenesis, vernalization, and responses to extreme temperatures. We also discuss the remaining issues that are crucial for understanding the interactions between plants and temperature.
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Affiliation(s)
- Yanglin Ding
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yiting Shi
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Shuhua Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China.
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Nuclear Chaperone ASF1 is Required for Gametogenesis in Arabidopsis thaliana. Sci Rep 2019; 9:13959. [PMID: 31562367 PMCID: PMC6764951 DOI: 10.1038/s41598-019-50450-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 09/11/2019] [Indexed: 12/31/2022] Open
Abstract
Sexual reproduction in flowering plants is distinct from that in animals since gametogenesis requires production of haploid spores, which divide and differentiate into specialised gametophyte structures. Anti-Silencing Function 1 (ASF1) is a histone H3/H4 chaperone involved in chromatin remodeling during cell division, which we have found plays a critical role in gametophyte development in Arabidopsis thaliana. Using mutant alleles for the two ASF1 homologs, asf1a and asf1b, we show that ASF1 is required for successful development of gametophytes and acquisition of fertilisation competency. On the female side, reproductive failure is caused by aberrant development of ovules, leading to gamete degeneration. On the male side, we show both in vitro and in vivo that asf1 mutant pollen tube growth is stunted, limiting fertilisation to ovules nearest the stigma. Consistent with ASF1 importance in gametogenesis, we show that ASF1A and ASF1B are expressed throughout female and male gametogenesis. We show that the gametogenesis defects can be corrected by ASF1A and ASF1B transgenes, and that ASF1A and ASF1B act redundantly. Thus, in contrast to the role of ASF1 in sporophytic cell cycle progression, our data indicate that during reproduction, ASF1 is required for the precise nuclei differentiation necessary for gametophyte maturation and fertilisation.
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Sedaghatmehr M, Thirumalaikumar VP, Kamranfar I, Marmagne A, Masclaux-Daubresse C, Balazadeh S. A regulatory role of autophagy for resetting the memory of heat stress in plants. PLANT, CELL & ENVIRONMENT 2019; 42:1054-1064. [PMID: 30136402 DOI: 10.1111/pce.13426] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 08/01/2018] [Accepted: 08/08/2018] [Indexed: 05/19/2023]
Abstract
As sessile life forms, plants are repeatedly confronted with adverse environmental conditions, which can impair development, growth, and reproduction. During evolution, plants have established mechanisms to orchestrate the delicate balance between growth and stress tolerance, to reset cellular biochemistry once stress vanishes, or to keep a molecular memory, which enables survival of a harsher stress that may arise later. Although there are several examples of memory in diverse plants species, the molecular machinery underlying the formation, duration, and resetting of stress memories is largely unknown so far. We report here that autophagy, a central self-degradative process, assists in resetting cellular memory of heat stress (HS) in Arabidopsis thaliana. Autophagy is induced by thermopriming (moderate HS) and, intriguingly, remains high long after stress termination. We demonstrate that autophagy mediates the specific degradation of heat shock proteins at later stages of the thermorecovery phase leading to the accumulation of protein aggregates after the second HS and a compromised heat tolerance. Autophagy mutants retain heat shock proteins longer than wild type and concomitantly display improved thermomemory. Our findings reveal a novel regulatory mechanism for HS memory in plants.
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Affiliation(s)
- Mastoureh Sedaghatmehr
- Department of Molecular Biology, University of Potsdam, Institute of Biochemistry and Biology, Potsdam, Golm, Germany
- Department of Molecular Physiology, Max Planck Institute of Molecular Plant Physiology, Potsdam, Golm, Germany
| | - Venkatesh P Thirumalaikumar
- Department of Molecular Biology, University of Potsdam, Institute of Biochemistry and Biology, Potsdam, Golm, Germany
- Department of Molecular Physiology, Max Planck Institute of Molecular Plant Physiology, Potsdam, Golm, Germany
| | - Iman Kamranfar
- Department of Molecular Biology, University of Potsdam, Institute of Biochemistry and Biology, Potsdam, Golm, Germany
| | - Anne Marmagne
- Institut Jean-Pierre Bourgin (IJPB), INRA, AgroParisTech, CNRS, Université Paris-Saclay, Versailles, France
| | - Celine Masclaux-Daubresse
- Institut Jean-Pierre Bourgin (IJPB), INRA, AgroParisTech, CNRS, Université Paris-Saclay, Versailles, France
| | - Salma Balazadeh
- Department of Molecular Biology, University of Potsdam, Institute of Biochemistry and Biology, Potsdam, Golm, Germany
- Department of Molecular Physiology, Max Planck Institute of Molecular Plant Physiology, Potsdam, Golm, Germany
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Islas-Flores T, Pérez-Cervantes E, Nava-Galeana J, Loredo-Guillén M, Guillén G, Villanueva MA. Molecular Features and mRNA Expression of the Receptor for Activated C Kinase 1 from Symbiodinium microadriaticum ssp. microadriaticum During Growth and the Light/Dark cycle. J Eukaryot Microbiol 2018; 66:254-266. [PMID: 30027647 DOI: 10.1111/jeu.12667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/22/2018] [Accepted: 07/03/2018] [Indexed: 01/27/2023]
Abstract
Two genes of the RACK1 homolog from the photosynthetic dinoflagellate Symbiodinium microadriaticum ssp. microadriaticum (SmicRACK1), termed SmicRACK1A and SmicRACK1B, were found tandemly arrayed and displayed a single synonymous substitution (T/C) encoding threonine. They included two exons of 942 bp each, encoding 313 amino acids with seven WD-40 repeats and two PKC-binding motifs. The protein theoretical mass and pI were 34,200 Da and 5.9, respectively. SmicRACK1 showed maximum identities with RACK1 homologs at the amino acid and nucleotide level, respectively, of 92 and 84% with S. minutum, and phylogenetic analysis revealed clustered related RACK1 sequences from the marine dinoflagellates S. minutum, Heterocapsa triquetra, Karenia brevis, and Alexandrium tamarense. Interestingly, light-dependent regulatory elements were found both within the 282 bp SmicRACK1A promotor sequence, and within an intergenic sequence of 359 nucleotides that separated both genes, which strongly suggest light-related functions. This was further supported by mRNA accumulation analysis, which fluctuated along the light and dark phases of the growth cycle showing maximum specific peaks under either condition. Finally, qRT-PCR analysis revealed differential SmicRACK1 mRNA accumulation with maxima at 6 and 20 d of culture. Our SmicRACK1 characterization suggests roles in active growth and proliferation, as well as light/dark cycle regulation in S. microadriaticum.
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Affiliation(s)
- Tania Islas-Flores
- Instituto de Ciencias del Mar y Limnología, Unidad Académica de Sistemas Arrecifales, Universidad Nacional Autónoma de México, U. N. A. M., Prolongación Avenida Niños Héroes S/N, Puerto Morelos, Quintana Roo, 77580, México
| | - Esmeralda Pérez-Cervantes
- Instituto de Ciencias del Mar y Limnología, Unidad Académica de Sistemas Arrecifales, Universidad Nacional Autónoma de México, U. N. A. M., Prolongación Avenida Niños Héroes S/N, Puerto Morelos, Quintana Roo, 77580, México.,Posgrado en Ciencias del Mar y Limnología-UNAM, Circuito Exterior S/N Ciudad Universitaria, Ciudad de México, CP 04510, México
| | - Jessica Nava-Galeana
- Instituto de Ciencias del Mar y Limnología, Unidad Académica de Sistemas Arrecifales, Universidad Nacional Autónoma de México, U. N. A. M., Prolongación Avenida Niños Héroes S/N, Puerto Morelos, Quintana Roo, 77580, México
| | - Montserrat Loredo-Guillén
- Grupo QUAE, S. de R.L., Laboratorio de Diagnóstico Molecular, Int. Hospital Morelos, Calle de la Luz 44, Col. Chapultepec, Cuernavaca, Morelos, CP 62450, México
| | - Gabriel Guillén
- Grupo QUAE, S. de R.L., Laboratorio de Diagnóstico Molecular, Int. Hospital Morelos, Calle de la Luz 44, Col. Chapultepec, Cuernavaca, Morelos, CP 62450, México.,Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, U. N. A. M., Avenida Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, México
| | - Marco A Villanueva
- Instituto de Ciencias del Mar y Limnología, Unidad Académica de Sistemas Arrecifales, Universidad Nacional Autónoma de México, U. N. A. M., Prolongación Avenida Niños Héroes S/N, Puerto Morelos, Quintana Roo, 77580, México
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Ling Y, Serrano N, Gao G, Atia M, Mokhtar M, Woo YH, Bazin J, Veluchamy A, Benhamed M, Crespi M, Gehring C, Reddy ASN, Mahfouz MM. Thermopriming triggers splicing memory in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:2659-2675. [PMID: 29474581 PMCID: PMC5920379 DOI: 10.1093/jxb/ery062] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 02/13/2018] [Indexed: 05/18/2023]
Abstract
Abiotic and biotic stresses limit crop productivity. Exposure to a non-lethal stress, referred to as priming, can allow plants to survive subsequent and otherwise lethal conditions; the priming effect persists even after a prolonged stress-free period. However, the molecular mechanisms underlying priming are not fully understood. Here, we investigated the molecular basis of heat-shock memory and the role of priming in Arabidopsis thaliana. Comprehensive analysis of transcriptome-wide changes in gene expression and alternative splicing in primed and non-primed plants revealed that alternative splicing functions as a novel component of heat-shock memory. We show that priming of plants with a non-lethal heat stress results in de-repression of splicing after a second exposure to heat stress. By contrast, non-primed plants showed significant repression of splicing. These observations link 'splicing memory' to the ability of plants to survive subsequent and otherwise lethal heat stress. This newly discovered priming-induced splicing memory may represent a general feature of heat-stress responses in plants and other organisms as many of the key components are conserved among eukaryotes. Furthermore, this finding could facilitate the development of novel approaches to improve plant survival under extreme heat stress.
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Affiliation(s)
- Yu Ling
- Laboratory for Genome Engineering, Division of Biological Sciences, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Natalia Serrano
- Laboratory for Genome Engineering, Division of Biological Sciences, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Ge Gao
- Division of Biological Sciences, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Mohamed Atia
- Agricultural Genetic Engineering Research Institute (AGERI), Giza Egypt
| | - Morad Mokhtar
- Agricultural Genetic Engineering Research Institute (AGERI), Giza Egypt
| | - Yong H Woo
- Division of Biological Sciences, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Jeremie Bazin
- Institut des Sciences du Végétal (ISV), CNRS, UPR2355, Saclay Plant Sciences, Gif-sur-Yvette Cedex, France
| | - Alaguraj Veluchamy
- Division of Biological Sciences, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Moussa Benhamed
- Division of Biological Sciences, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Martin Crespi
- Institut des Sciences du Végétal (ISV), CNRS, UPR2355, Saclay Plant Sciences, Gif-sur-Yvette Cedex, France
| | - Christoph Gehring
- Division of Biological Sciences, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - A S N Reddy
- Department of Biology, Program in Molecular Plant Biology, Program in Cell and Molecular Biology, Colorado State University, Fort Collins, CO, USA
| | - Magdy M Mahfouz
- Laboratory for Genome Engineering, Division of Biological Sciences, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Correspondence:
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Annacondia ML, Magerøy MH, Martinez G. Stress response regulation by epigenetic mechanisms: changing of the guards. PHYSIOLOGIA PLANTARUM 2018; 162:239-250. [PMID: 29080251 DOI: 10.1111/ppl.12662] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 09/25/2017] [Accepted: 10/25/2017] [Indexed: 05/23/2023]
Abstract
Plants are sessile organisms that lack a specialized immune system to cope with biotic and abiotic stress. Instead, plants have complex regulatory networks that determine the appropriate distribution of resources between the developmental and the defense programs. In the last years, epigenetic regulation of repeats and gene expression has evolved as an important player in the transcriptional regulation of stress-related genes. Here, we review the current knowledge about how different stresses interact with different levels of epigenetic control of the genome. Moreover, we analyze the different examples of transgenerational epigenetic inheritance and connect them with the known features of genome epigenetic regulation. Although yet to be explored, the interplay between epigenetics and stress resistance seems to be a relevant and dynamic player of the interaction of plants with their environments.
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Affiliation(s)
- Maria Luz Annacondia
- Department of Plant Biology, Uppsala BioCenter, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, Uppsala, Sweden
| | | | - German Martinez
- Department of Plant Biology, Uppsala BioCenter, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, Uppsala, Sweden
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44
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Ohama N, Sato H, Shinozaki K, Yamaguchi-Shinozaki K. Transcriptional Regulatory Network of Plant Heat Stress Response. TRENDS IN PLANT SCIENCE 2017; 22:53-65. [PMID: 27666516 DOI: 10.1016/j.tplants.2016.08.015] [Citation(s) in RCA: 565] [Impact Index Per Article: 80.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/29/2016] [Accepted: 08/31/2016] [Indexed: 05/19/2023]
Abstract
Heat stress (HS) is becoming an increasingly significant problem for food security as global warming progresses. Recent studies have elucidated the complex transcriptional regulatory networks involved in HS. Here, we provide an overview of current knowledge regarding the transcriptional regulatory network and post-translational regulation of the transcription factors involved in the HS response. Increasing evidence suggests that epigenetic regulation and small RNAs are important in heat-induced transcriptional responses and stress memory. It remains to be elucidated how plants sense and respond to HS. Several recent reports have discussed the heat sensing and signaling that activate transcriptional cascades; thus, we also highlight future directions of promoting crop tolerance to HS using these factors or other strategies for agricultural applications.
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Affiliation(s)
- Naohiko Ohama
- Laboratory of Plant Molecular Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Hikaru Sato
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Tsukuba, Ibaraki 305-0074 Japan
| | - Kazuo Shinozaki
- Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Tsukuba, Ibaraki 305-0074 Japan
| | - Kazuko Yamaguchi-Shinozaki
- Laboratory of Plant Molecular Physiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan.
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45
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Pandey G, Sharma N, Sahu PP, Prasad M. Chromatin-Based Epigenetic Regulation of Plant Abiotic Stress Response. Curr Genomics 2016; 17:490-498. [PMID: 28217005 PMCID: PMC5282600 DOI: 10.2174/1389202917666160520103914] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 12/10/2015] [Accepted: 12/13/2015] [Indexed: 12/15/2022] Open
Abstract
Plants are continuously exposed to various abiotic and biotic factors limiting their growth and reproduction. In response, they need various sophisticated ways to adapt to adverse environmental conditions without compromising their proper development, reproductive success and eventually survival. This requires an intricate network to regulate gene expression at transcriptional and post-transcriptional levels, including epigenetic switches. Changes in chromatin modifications such as DNA and histone methylation have been observed in plants upon exposure to several abiotic stresses. In the present review, we highlight the changes of DNA methylation in diverse plants in response to several abiotic stresses such as salinity, drought, cold and heat. We also discuss the progresses made in understanding how these DNA methylation changes might contribute to the abiotic stress tolerance.
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Affiliation(s)
- Garima Pandey
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India
| | - Namisha Sharma
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India
| | - Pranav Pankaj Sahu
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India
| | - Manoj Prasad
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India,Address correspondence to this author at the National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi-110067, India; Tel: 91-11-26735160; Fax: 91-11-26741658; 26741146;, E-mails: ,
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Zhou W, Gao J, Ma J, Cao L, Zhang C, Zhu Y, Dong A, Shen WH. Distinct roles of the histone chaperones NAP1 and NRP and the chromatin-remodeling factor INO80 in somatic homologous recombination in Arabidopsis thaliana. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2016; 88:397-410. [PMID: 27352805 DOI: 10.1111/tpj.13256] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 06/24/2016] [Indexed: 05/10/2023]
Abstract
Homologous recombination (HR) of nuclear DNA occurs within the context of a highly complex chromatin structure. Despite extensive studies of HR in diverse organisms, mechanisms regulating HR within the chromatin context remain poorly elucidated. Here we investigate the role and interplay of the histone chaperones NUCLEOSOME ASSEMBLY PROTEIN1 (NAP1) and NAP1-RELATED PROTEIN (NRP) and the ATP-dependent chromatin-remodeling factor INOSITOL AUXOTROPHY80 (INO80) in regulating somatic HR in Arabidopsis thaliana. We show that simultaneous knockout of the four AtNAP1 genes and the two NRP genes in the sextuple mutant m123456-1 barely affects normal plant growth and development. Interestingly, compared with the respective AtNAP1 (m123-1 and m1234-1) or NRP (m56-1) loss-of-function mutants, the sextuple mutant m123456-1 displays an enhanced plant hypersensitivity to UV or bleomycin treatments. Using HR reporter constructs, we show that AtNAP1 and NRP act in parallel to synergistically promote somatic HR. Distinctively, the AtINO80 loss-of-function mutation (atino80-5) is epistatic to m56-1 in plant phenotype and telomere length but hypostatic to m56-1 in HR determinacy. Further analyses show that expression of HR machinery genes and phosphorylation of H2A.X (γ-H2A.X) are not impaired in the mutants. Collectively, our study indicates that NRP and AtNAP1 synergistically promote HR upstream of AtINO80-mediated chromatin remodeling after the formation of γ-H2A.X foci during DNA damage repair.
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Affiliation(s)
- Wangbin Zhou
- Department of Biochemistry, State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, School of Life Sciences, Institute of Plant Biology, Fudan University, Shanghai, 20043, China
| | - Juan Gao
- Department of Biochemistry, State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, School of Life Sciences, Institute of Plant Biology, Fudan University, Shanghai, 20043, China
- Institut de Biologie Moléculaire des Plantes (IBMP), UPR2357 CNRS, Université de Strasbourg, 12 rue du Général Zimmer, Strasbourg Cédex, 67084, France
- School of Life Sciences, Shanghai Key Laboratory of Bio-Energy Crops, Shanghai University, Shanghai, 200444, China
| | - Jing Ma
- Department of Biochemistry, State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, School of Life Sciences, Institute of Plant Biology, Fudan University, Shanghai, 20043, China
| | - Lin Cao
- Department of Biochemistry, State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, School of Life Sciences, Institute of Plant Biology, Fudan University, Shanghai, 20043, China
| | - Chi Zhang
- Department of Biochemistry, State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, School of Life Sciences, Institute of Plant Biology, Fudan University, Shanghai, 20043, China
| | - Yan Zhu
- Department of Biochemistry, State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, School of Life Sciences, Institute of Plant Biology, Fudan University, Shanghai, 20043, China
| | - Aiwu Dong
- Department of Biochemistry, State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, School of Life Sciences, Institute of Plant Biology, Fudan University, Shanghai, 20043, China
| | - Wen-Hui Shen
- Department of Biochemistry, State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, School of Life Sciences, Institute of Plant Biology, Fudan University, Shanghai, 20043, China
- Institut de Biologie Moléculaire des Plantes (IBMP), UPR2357 CNRS, Université de Strasbourg, 12 rue du Général Zimmer, Strasbourg Cédex, 67084, France
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Maksimov V, Nakamura M, Wildhaber T, Nanni P, Ramström M, Bergquist J, Hennig L. The H3 chaperone function of NASP is conserved in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2016; 88:425-436. [PMID: 27402088 DOI: 10.1111/tpj.13263] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 06/20/2016] [Accepted: 06/22/2016] [Indexed: 06/06/2023]
Abstract
Histones are abundant cellular proteins but, if not incorporated into chromatin, they are usually bound by histone chaperones. Here, we identify Arabidopsis NASP as a chaperone for histones H3.1 and H3.3. NASP interacts in vitro with monomeric H3.1 and H3.3 as well as with histone H3.1-H4 and H3.3-H4 dimers. However, NASP does not bind to monomeric H4. NASP shifts the equilibrium between histone dimers and tetramers towards tetramers but does not interact with tetramers in vitro. Arabidopsis NASP promotes [H3-H4]2 tetrasome formation, possibly by providing preassembled histone tetramers. However, NASP does not promote disassembly of in vitro preassembled tetrasomes. In contrast to its mammalian homolog, Arabidopsis NASP is a predominantly nuclear protein. In vivo, NASP binds mainly monomeric H3.1 and H3.3. Pulldown experiments indicated that NASP may also interact with the histone chaperone MSI1 and a HSC70 heat shock protein.
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Affiliation(s)
- Vladimir Maksimov
- Department of Plant Biology and Linnean Center for Plant Biology, Swedish University of Agricultural Sciences, PO-Box 7080, SE-75007, Uppsala, Sweden
| | - Miyuki Nakamura
- Department of Plant Biology and Linnean Center for Plant Biology, Swedish University of Agricultural Sciences, PO-Box 7080, SE-75007, Uppsala, Sweden
| | - Thomas Wildhaber
- Department of Biology and Zurich-Basel Plant Science Center, ETH Zurich, CH-8092, Zurich, Switzerland
| | - Paolo Nanni
- Functional Genomics Center Zurich, University of Zurich/ETH Zurich, CH-8057, Zurich, Switzerland
| | - Margareta Ramström
- Department of Chemistry-BMC, Analytical Chemistry and Science for Life Laboratory, Uppsala University, SE-75124, Uppsala, Sweden
| | - Jonas Bergquist
- Department of Chemistry-BMC, Analytical Chemistry and Science for Life Laboratory, Uppsala University, SE-75124, Uppsala, Sweden
| | - Lars Hennig
- Department of Plant Biology and Linnean Center for Plant Biology, Swedish University of Agricultural Sciences, PO-Box 7080, SE-75007, Uppsala, Sweden
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Iglesias FM, Cerdán PD. Maintaining Epigenetic Inheritance During DNA Replication in Plants. FRONTIERS IN PLANT SCIENCE 2016; 7:38. [PMID: 26870059 PMCID: PMC4735446 DOI: 10.3389/fpls.2016.00038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 01/11/2016] [Indexed: 05/18/2023]
Abstract
Biotic and abiotic stresses alter the pattern of gene expression in plants. Depending on the frequency and duration of stress events, the effects on the transcriptional state of genes are "remembered" temporally or transmitted to daughter cells and, in some instances, even to offspring (transgenerational epigenetic inheritance). This "memory" effect, which can be found even in the absence of the original stress, has an epigenetic basis, through molecular mechanisms that take place at the chromatin and DNA level but do not imply changes in the DNA sequence. Many epigenetic mechanisms have been described and involve covalent modifications on the DNA and histones, such as DNA methylation, histone acetylation and methylation, and RNAi dependent silencing mechanisms. Some of these chromatin modifications need to be stable through cell division in order to be truly epigenetic. During DNA replication, histones are recycled during the formation of the new nucleosomes and this process is tightly regulated. Perturbations to the DNA replication process and/or the recycling of histones lead to epigenetic changes. In this mini-review, we discuss recent evidence aimed at linking DNA replication process to epigenetic inheritance in plants.
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Affiliation(s)
| | - Pablo D. Cerdán
- Fundación Instituto Leloir, IIBBA-CONICET Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires Buenos Aires, Argentina
- *Correspondence: Pablo D. Cerdán,
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49
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Dossa K, Diouf D, Cissé N. Genome-Wide Investigation of Hsf Genes in Sesame Reveals Their Segmental Duplication Expansion and Their Active Role in Drought Stress Response. FRONTIERS IN PLANT SCIENCE 2016; 7:1522. [PMID: 27790233 PMCID: PMC5061811 DOI: 10.3389/fpls.2016.01522] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 09/27/2016] [Indexed: 05/05/2023]
Abstract
Sesame is a survivor crop cultivated for ages in arid areas under high temperatures and limited water conditions. Since its entire genome has been sequenced, revealing evolution, and functional characterization of its abiotic stress genes became a hot topic. In this study, we performed a whole-genome identification and analysis of Hsf gene family in sesame. Thirty genes encoding Hsf domain were found and classified into 3 major classes A, B, and C. The class A members were the most representative one and Hsf genes were distributed in 12 of the 16 linkage groups (except the LG 8, 9, 13, and 16). Evolutionary analysis revealed that, segmental duplication events which occurred around 67 MYA, were the primary force underlying Hsf genes expansion in sesame. Comparative analysis also suggested that sesame has retained most of its Hsf genes while its relatives viz. tomato and potato underwent extensive gene losses during evolution. Continuous purifying selection has played a key role in the maintenance of Hsf genes in sesame. Expression analysis of the Hsf genes in sesame revealed their putative involvement in multiple tissue-/developmental stages. Time-course expression profiling of Hsf genes in response to drought stress showed that 90% Hsfs are drought responsive. We infer that classes B-Hsfs might be the primary regulators of drought response in sesame by cooperating with some class A genes. This is the first insight into this gene family and the results provide some gene resources for future gene cloning and functional studies toward the improvement in stress tolerance of sesame.
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Affiliation(s)
- Komivi Dossa
- Centre d'Etudes Régional pour l'Amélioration de l'Adaptation à la SécheresseSénégal
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta DiopDakar, Sénégal
- *Correspondence: Komivi Dossa
| | - Diaga Diouf
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta DiopDakar, Sénégal
| | - Ndiaga Cissé
- Centre d'Etudes Régional pour l'Amélioration de l'Adaptation à la SécheresseSénégal
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50
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Hu Z, Song N, Zheng M, Liu X, Liu Z, Xing J, Ma J, Guo W, Yao Y, Peng H, Xin M, Zhou DX, Ni Z, Sun Q. Histone acetyltransferase GCN5 is essential for heat stress-responsive gene activation and thermotolerance in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2015; 84:1178-91. [PMID: 26576681 DOI: 10.1111/tpj.13076] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 10/29/2015] [Accepted: 11/03/2015] [Indexed: 05/22/2023]
Abstract
Exposure to temperatures exceeding the normal optimum levels, or heat stress (HS), constitutes an environmental disruption for plants, resulting in severe growth and development retardation. Here we show that loss of function of the Arabidopsis histone acetyltransferase GCN5 results in serious defects in terms of thermotolerance, and considerably impairs the transcriptional activation of HS-responsive genes. Notably, expression of several key regulators such as the HS transcription factors HSFA2 and HSFA3, Multiprotein Bridging Factor 1c (MBF1c) and UV-HYPERSENSITIVE 6 (UVH6) is down-regulated in the gcn5 mutant under HS compared with the wild-type. Chromatin immunoprecipitation (ChIP) assays indicated that GCN5 protein is enriched at the promoter regions of HSFA3 and UVH6 genes, but not in HSFA2 and MBF1c, and that GCN5 facilitates H3K9 and H3K14 acetylation, which are associated with HSFA3 and UVH6 activation under HS. Moreover, constitutive expression of UVH6 in the gcn5 mutant partially restores heat tolerance. Taken together, our data indicate that GCN5 plays a key role in the preservation of thermotolerance via versatile regulation in Arabidopsis. In addition, expression of the wheat TaGCN5 gene re-establishes heat tolerance in Arabidopsis gcn5 mutant plants, suggesting that GCN5-mediated thermotolerance may be conserved between Arabidopsis and wheat.
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Affiliation(s)
- Zhaorong Hu
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Na Song
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Mei Zheng
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Xinye Liu
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Zhenshan Liu
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Jiewen Xing
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Junhua Ma
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Weiwei Guo
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Yingyin Yao
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Huiru Peng
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Mingming Xin
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Dao-Xiu Zhou
- Institute of Plant Science Paris Saclay, Université Paris Sud, 91405, Orsay, France
| | - Zhongfu Ni
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
| | - Qixin Sun
- State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
- National Plant Gene Research Centre (Beijing), Beijing, 100193, China
- Department of Plant Genetics & Breeding, China Agricultural University, Yuanmingyuan Xi Road No. 2, Haidian District, Beijing, 100193, China
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