1
|
Yadav P, Ansari MW, Gill R, Tuteja N, Gill SS. Arsenic transport, detoxification, and recent technologies for mitigation: A systemic review. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 213:108848. [PMID: 38908350 DOI: 10.1016/j.plaphy.2024.108848] [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: 03/23/2024] [Revised: 05/28/2024] [Accepted: 06/15/2024] [Indexed: 06/24/2024]
Abstract
Arsenic (As) is an acute toxic metalloid that affects plant growth and development. As is found in the environment in organic and inorganic forms, but arsenite As(III) and arsenate As(V) are the most prevalent forms that negatively impact the plants. Roots exposed to As can easily absorb it mainly through transporters that carry vital mineral nutrients. As reach the food chain via crops irrigated with As-polluted water and exerts a negative impact. Even at low levels, As exposure disrupts the regular functioning of plants by generating a high level of reactive oxygen species (ROS) results into oxidative damage, and disruption of redox system. Plants have built-in defence mechanisms to combat this oxidative damage. The development of a food crop with lower As levels is dependent upon understanding the molecular process of As detoxification in plants, which will help reduce the consumption of As-contaminated food. Numerous genes in plants that may provide tolerance under hazardous conditions have been examined using genetic engineering techniques. The suppression of genes by RNA interference (RNAi) and CRISPR-Cas 9 (CRISPR associated protein 9) technology revealed an intriguing approach for developing a crop that has minimal As levels in consumable portions. This study aims to present current information on the biochemical and molecular networks associated with As uptake, as well as recent advances in the field of As mitigation using exogenous salicylic acid (SA), Serendipita indica and biotechnological tools in terms of generating As-tolerant plants with low As accumulation.
Collapse
Affiliation(s)
- Priya Yadav
- Department of Botany, Zakir Husain Delhi College, University of Delhi, New Delhi, India
| | - Mohammad Wahid Ansari
- Department of Botany, Zakir Husain Delhi College, University of Delhi, New Delhi, India.
| | - Ritu Gill
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Narendra Tuteja
- International Centre for Genetic Engineering & Biotechnology, Aruna Asaf Ali Marg, New Delhi, India
| | - Sarvajeet Singh Gill
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India.
| |
Collapse
|
2
|
Su Y, Ngea GLN, Wang K, Lu Y, Godana EA, Ackah M, Yang Q, Zhang H. Deciphering the mechanism of E3 ubiquitin ligases in plant responses to abiotic and biotic stresses and perspectives on PROTACs for crop resistance. PLANT BIOTECHNOLOGY JOURNAL 2024. [PMID: 38864414 DOI: 10.1111/pbi.14407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 05/12/2024] [Accepted: 05/27/2024] [Indexed: 06/13/2024]
Abstract
With global climate change, it is essential to find strategies to make crops more resistant to different stresses and guarantee food security worldwide. E3 ubiquitin ligases are critical regulatory elements that are gaining importance due to their role in selecting proteins for degradation in the ubiquitin-proteasome proteolysis pathway. The role of E3 Ub ligases has been demonstrated in numerous cellular processes in plants responding to biotic and abiotic stresses. E3 Ub ligases are considered a class of proteins that are difficult to control by conventional inhibitors, as they lack a standard active site with pocket, and their biological activity is mainly due to protein-protein interactions with transient conformational changes. Proteolysis-targeted chimeras (PROTACs) are a new class of heterobifunctional molecules that have emerged in recent years as relevant alternatives for incurable human diseases like cancer because they can target recalcitrant proteins for destruction. PROTACs interact with the ubiquitin-proteasome system, principally the E3 Ub ligase in the cell, and facilitate proteasome turnover of the proteins of interest. PROTAC strategies harness the essential functions of E3 Ub ligases for proteasomal degradation of proteins involved in dysfunction. This review examines critical advances in E3 Ub ligase research in plant responses to biotic and abiotic stresses. It highlights how PROTACs can be applied to target proteins involved in plant stress response to mitigate pathogenic agents and environmental adversities.
Collapse
Affiliation(s)
- Yingying Su
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Guillaume Legrand Ngolong Ngea
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Institute of Fisheries Sciences, University of Douala, Douala, Cameroon
| | - Kaili Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Yuchun Lu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Esa Abiso Godana
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Michael Ackah
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Qiya Yang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Hongyin Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| |
Collapse
|
3
|
Gracia-Rodriguez C, Lopez-Ortiz C, Flores-Iga G, Ibarra-Muñoz L, Nimmakayala P, Reddy UK, Balagurusamy N. From genes to ecosystems: Decoding plant tolerance mechanisms to arsenic stress. Heliyon 2024; 10:e29140. [PMID: 38601600 PMCID: PMC11004893 DOI: 10.1016/j.heliyon.2024.e29140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 03/28/2024] [Accepted: 04/01/2024] [Indexed: 04/12/2024] Open
Abstract
Arsenic (As), a metalloid of considerable toxicity, has become increasingly bioavailable through anthropogenic activities, raising As contamination levels in groundwater and agricultural soils worldwide. This bioavailability has profound implications for plant biology and farming systems. As can detrimentally affect crop yield and pose risks of bioaccumulation and subsequent entry into the food chain. Upon exposure to As, plants initiate a multifaceted molecular response involving crucial signaling pathways, such as those mediated by calcium, mitogen-activated protein kinases, and various phytohormones (e.g., auxin, methyl jasmonate, cytokinin). These pathways, in turn, activate enzymes within the antioxidant system, which combat the reactive oxygen/nitrogen species (ROS and RNS) generated by As-induced stress. Plants exhibit a sophisticated genomic response to As, involving the upregulation of genes associated with uptake, chelation, and sequestration. Specific gene families, such as those coding for aquaglyceroporins and ABC transporters, are key in mediating As uptake and translocation within plant tissues. Moreover, we explore the gene regulatory networks that orchestrate the synthesis of phytochelatins and metallothioneins, which are crucial for As chelation and detoxification. Transcription factors, particularly those belonging to the MYB, NAC, and WRKY families, emerge as central regulators in activating As-responsive genes. On a post-translational level, we examine how ubiquitination pathways modulate the stability and function of proteins involved in As metabolism. By integrating omics findings, this review provides a comprehensive overview of the complex genomic landscape that defines plant responses to As. Knowledge gained from these genomic and epigenetic insights is pivotal for developing biotechnological strategies to enhance crop As tolerance.
Collapse
Affiliation(s)
- Celeste Gracia-Rodriguez
- Laboratorio de Biorremediación, Facultad de Ciencias Biológicas, Universidad Autónoma de Coahuila, Torreón, Mexico
- Gus R. Douglass Institute and Department of Biology, West Virginia State University, Institute, Dunbar, WV 25112-1000, USA
| | - Carlos Lopez-Ortiz
- Gus R. Douglass Institute and Department of Biology, West Virginia State University, Institute, Dunbar, WV 25112-1000, USA
| | - Gerardo Flores-Iga
- Laboratorio de Biorremediación, Facultad de Ciencias Biológicas, Universidad Autónoma de Coahuila, Torreón, Mexico
- Gus R. Douglass Institute and Department of Biology, West Virginia State University, Institute, Dunbar, WV 25112-1000, USA
| | - Lizbeth Ibarra-Muñoz
- Laboratorio de Biorremediación, Facultad de Ciencias Biológicas, Universidad Autónoma de Coahuila, Torreón, Mexico
| | - Padma Nimmakayala
- Gus R. Douglass Institute and Department of Biology, West Virginia State University, Institute, Dunbar, WV 25112-1000, USA
| | - Umesh K. Reddy
- Gus R. Douglass Institute and Department of Biology, West Virginia State University, Institute, Dunbar, WV 25112-1000, USA
| | - Nagamani Balagurusamy
- Laboratorio de Biorremediación, Facultad de Ciencias Biológicas, Universidad Autónoma de Coahuila, Torreón, Mexico
| |
Collapse
|
4
|
Ly LK, Ho TM, Bui TP, Nguyen LT, Phan Q, Le NT, Khuat LTM, Le LH, Chu HH, Pham NB, Do PT. CRISPR/Cas9 targeted mutations of OsDSG1 gene enhanced salt tolerance in rice. Funct Integr Genomics 2024; 24:70. [PMID: 38565780 DOI: 10.1007/s10142-024-01347-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/19/2024] [Accepted: 03/19/2024] [Indexed: 04/04/2024]
Abstract
Salinization is one of the leading causes of arable land shrinkage and rice yield decline, recently. Therefore, developing and utilizing salt-tolerant rice varieties have been seen as a crucial and urgent strategy to reduce the effects of saline intrusion and protect food security worldwide. In the current study, the CRISPR/Cas9 system was utilized to induce targeted mutations in the coding sequence of the OsDSG1, a gene involved in the ubiquitination pathway and the regulation of biochemical reactions in rice. The CRISPR/Cas9-induced mutations of the OsDSG1 were generated in a local rice cultivar and the mutant inheritance was validated at different generations. The OsDSG1 mutant lines showed an enhancement in salt tolerance compared to wild type plants at both germination and seedling stages indicated by increases in plant height, root length, and total fresh weight as well as the total chlorophyll and relative water contents under the salt stress condition. In addition, lower proline and MDA contents were observed in mutant rice as compared to wild type plants in the presence of salt stress. Importantly, no effect on seed germination and plant growth parameters was recorded in the CRISRP/Cas9-induced mutant rice under the normal condition. This study again indicates the involvement of the OsDSG1 gene in the salt resistant mechanism in rice and provides a potential strategy to enhance the tolerance of local rice varieties to the salt stress.
Collapse
Affiliation(s)
- Linh Khanh Ly
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Tuong Manh Ho
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Thao Phuong Bui
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Linh Thi Nguyen
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Quyen Phan
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Ngoc Thu Le
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
| | | | | | - Ha Hoang Chu
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Ngoc Bich Pham
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
| | - Phat Tien Do
- Institute of Biotechnology, Vietnam Academy of Science and Technology, A10 Building, 18 Hoang Quoc Viet, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
| |
Collapse
|
5
|
Zhang J, Wysocki R, Li F, Yu M, Martinoia E, Song WY. Role of ubiquitination in arsenic tolerance in plants. TRENDS IN PLANT SCIENCE 2023; 28:880-892. [PMID: 37002000 DOI: 10.1016/j.tplants.2023.03.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/18/2023] [Accepted: 03/09/2023] [Indexed: 06/19/2023]
Abstract
Arsenic (As) is harmful to all living organisms, including humans and plants. To limit As uptake and avoid its toxicity, plants employ systems that regulate the uptake of As from the soil and its translocation from roots to grains. Ubiquitination, a highly conserved post-translational modification (PTM) in all eukaryotes, plays crucial roles in modulating As detoxification mechanisms in budding yeast (Saccharomyces cerevisiae), but little is known about its roles in As tolerance and transport in plants. In this opinion article we review recent findings and suggest that ubiquitination plays a crucial role in regulating As transport in plants. We also propose ideas for future research to explore the importance of ubiquitination for enhancing As tolerance in crops.
Collapse
Affiliation(s)
- Jie Zhang
- Research Center for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, Guangdong 528000, China
| | - Robert Wysocki
- Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
| | - Fangbai Li
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Min Yu
- Research Center for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, Guangdong 528000, China.
| | - Enrico Martinoia
- Research Center for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, Guangdong 528000, China; Institute of Plant Biology, University Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland.
| | - Won-Yong Song
- Research Center for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, Guangdong 528000, China; Department of Integrative Bioscience and Biotechnology, Pohang University of Science and Technology, Pohang 37673, Republic of Korea.
| |
Collapse
|
6
|
Lee SB, Kim GJ, Shin JD, Chung W, Park SK, Choi GH, Park SW, Park YJ. Genome-Scale Profiling and High-Throughput Analyses Unravel the Genetic Basis of Arsenic Content Variation in Rice. FRONTIERS IN PLANT SCIENCE 2022; 13:905842. [PMID: 35958208 PMCID: PMC9361212 DOI: 10.3389/fpls.2022.905842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Ionomics, the study of the composition of mineral nutrients and trace elements in organisms that represent the inorganic component of cells and tissues, has been widely studied to explore to unravel the molecular mechanism regulating the elemental composition of plants. However, the genetic factors of rice subspecies in the interaction between arsenic and functional ions have not yet been explained. Here, the correlation between As and eight essential ions in a rice core collection was analyzed, taking into account growing condition and genetic factors. The results demonstrated that the correlation between As and essential ions was affected by genetic factors and growing condition, but it was confirmed that the genetic factor was slightly larger with the heritability for arsenic content at 53%. In particular, the cluster coefficient of japonica (0.428) was larger than that of indica (0.414) in the co-expression network analysis for 23 arsenic genes, and it was confirmed that the distance between genes involved in As induction and detoxification of japonica was far than that of indica. These findings provide evidence that japonica populations could accumulate more As than indica populations. In addition, the cis-eQTLs of AIR2 (arsenic-induced RING finger protein) were isolated through transcriptome-wide association studies, and it was confirmed that AIR2 expression levels of indica were lower than those of japonica. This was consistent with the functional haplotype results for the genome sequence of AIR2, and finally, eight rice varieties with low AIR2 expression and arsenic content were selected. In addition, As-related QTLs were identified on chromosomes 5 and 6 under flooded and intermittently flooded conditions through genome-scale profiling. Taken together, these results might assist in developing markers and breeding plans to reduce toxic element content and breeding high-quality rice varieties in future.
Collapse
Affiliation(s)
- Sang-Beom Lee
- Crop Foundation Research Division, National Institute of Crop Science, Wanju, South Korea
| | - Gyeong-Jin Kim
- Residual Agrochemical Assessment Division, National Institute of Agriculture Science, Wanju, South Korea
| | - Jung-Du Shin
- Bio-Technology of Multidisciplinary Sciences Co., Wanju, South Korea
| | - Woojin Chung
- Department of Environmental Energy Engineering, Kyonggi University, Suwon, South Korea
| | - Soo-Kwon Park
- Crop Foundation Research Division, National Institute of Crop Science, Wanju, South Korea
| | - Geun-Hyoung Choi
- Residual Agrochemical Assessment Division, National Institute of Agriculture Science, Wanju, South Korea
| | - Sang-Won Park
- Reserch Policy Bureau, Rural Development Administration, Wanju, South Korea
| | - Yong-Jin Park
- Department of Plant Resources, College of Industrial Sciences, Kongju National University, Yesan, South Korea
| |
Collapse
|
7
|
Pinson SRM, Heuschele DJ, Edwards JD, Jackson AK, Sharma S, Barnaby JY. Relationships Among Arsenic-Related Traits, Including Rice Grain Arsenic Concentration and Straighthead Resistance, as Revealed by Genome-Wide Association. Front Genet 2022; 12:787767. [PMID: 35371188 PMCID: PMC8974240 DOI: 10.3389/fgene.2021.787767] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 12/23/2021] [Indexed: 11/13/2022] Open
Abstract
There is global concern that rice grains and foods can contain harmful amounts of arsenic (As), motivating breeders to produce cultivars that restrict As accumulation in grains to protect human health. Arsenic is also toxic to plants, with straighthead disorder (StHD), causing panicle sterility, being observed in rice. The genetic variation in StHD resistance suggests that plants have evolved mechanisms that reduce As toxicity, possibly via regulation of As uptake, transport, or detoxification/sequestration. Because these mechanisms could also underlie the wide (3- to 100-fold) differences in grain As concentration (grain-As) observed among diverse rice genotypes, it was hypothesized that some genes reduce both grain-As content and StHD susceptibility and may be detectable as co-located StDH and As quantitative trait loci (QTL). We used a machine-learning Bayesian network approach plus high-resolution genome-wide association study (GWAS) to identify QTL for grain-As and StHD resistance within the USDA Rice Minicore Collection (RMC). Arsenic enters roots through phosphorus (P) and silica (Si) transporters, As detoxification involves sulfur (S), and cell signaling to activate stress tolerance mechanisms is impacted by Si, calcium (Ca), and copper (Cu). Therefore, concentrations of Si, P, S, Ca, and Cu were included in this study to elucidate physiological mechanisms underlying grain-As and StHD QTL. Multiple QTL (from 9 to 33) were identified for each of the investigated As-associated traits. Although the QTL for StHD, Si, and grain-As did not overlap as heavily as our hypothesis predicted (4/33 StHD and 4/15 As QTL co-located), they do provide useful guidance to future research. Furthermore, these are the first StHD and Si QTL to be identified using high-density mapping, resulting in their being mapped to shorter, more precise genomic regions than previously reported QTL. The candidate genes identified provide guidance for future research, such as gene editing or mutation studies to further investigate the role of antioxidants and ROS scavenging to StHD resistance, as indicated by candidate genes around the commonly reported qStHD8-2 QTL. Other genes indicated for future study for improving grain-As and StHD include several multidrug and toxic compound extrusion (MATE) genes, F-box genes, and NIPs not documented to date to transport As.
Collapse
Affiliation(s)
- Shannon R M Pinson
- Dale Bumpers National Rice Research Center, United States Department of Agriculture-Agricultural Research Service, Stuttgart, AR, United States
| | - D Jo Heuschele
- Plant Science Research Unit, United States Department of Agriculture-Agricultural Research Service, St. Paul, CO, United States
| | - Jeremy D Edwards
- Dale Bumpers National Rice Research Center, United States Department of Agriculture-Agricultural Research Service, Stuttgart, AR, United States
| | - Aaron K Jackson
- Dale Bumpers National Rice Research Center, United States Department of Agriculture-Agricultural Research Service, Stuttgart, AR, United States
| | - Santosh Sharma
- Dale Bumpers National Rice Research Center, United States Department of Agriculture-Agricultural Research Service, Stuttgart, AR, United States
| | - Jinyoung Y Barnaby
- Dale Bumpers National Rice Research Center, United States Department of Agriculture-Agricultural Research Service, Stuttgart, AR, United States
| |
Collapse
|
8
|
Navarro C, Mateo-Elizalde C, Mohan TC, Sánchez-Bermejo E, Urrutia O, Fernández-Muñiz MN, García-Mina JM, Muñoz R, Paz-Ares J, Castrillo G, Leyva A. Arsenite provides a selective signal that coordinates arsenate uptake and detoxification through the regulation of PHR1 stability in Arabidopsis. MOLECULAR PLANT 2021; 14:1489-1507. [PMID: 34048950 DOI: 10.1016/j.molp.2021.05.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 04/30/2021] [Accepted: 05/24/2021] [Indexed: 06/12/2023]
Abstract
In nature, plants acquire nutrients from soils to sustain growth, and at the same time, they need to avoid the uptake of toxic compounds and/or possess tolerance systems to cope with them. This is particularly challenging when the toxic compound and the nutrient are chemically similar, as in the case of phosphate and arsenate. In this study, we demonstrated that regulatory elements of the phosphate starvation response (PSR) coordinate the arsenate detoxification machinery in the cell. We showed that arsenate repression of the phosphate transporter PHT1;1 is associated with the degradation of the PSR master regulator PHR1. Once arsenic is sequestered into the vacuole, PHR1 stability is restored and PHT1;1 expression is recovered. Furthermore, we identified an arsenite responsive SKP1-like protein and a PHR1 interactor F-box (PHIF1) as constituents of the SCF complex responsible for PHR1 degradation.We found that arsenite, the form to which arsenate is reduced for compartmentalization in vacuoles, represses PHT1;1 expression, providing a highly selective signal versus phosphate to control PHT1;1 expression in response to arsenate. Collectively, our results provide molecular insights into a sensing mechanism that regulates arsenate/phosphate uptake depending on the plant's detoxification capacity.
Collapse
Affiliation(s)
- Cristina Navarro
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas, Madrid 28049, Spain
| | - Cristian Mateo-Elizalde
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas, Madrid 28049, Spain
| | - Thotegowdanapalya C Mohan
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas, Madrid 28049, Spain
| | - Eduardo Sánchez-Bermejo
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas, Madrid 28049, Spain
| | - Oscar Urrutia
- Department of Environmental Biology, Sciences School, University of Navarra, Pamplona 31008, Spain
| | - María Nieves Fernández-Muñiz
- Department of Analytical Chemistry, School of Chemical Sciences, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - José M García-Mina
- Department of Environmental Biology, Sciences School, University of Navarra, Pamplona 31008, Spain
| | - Riansares Muñoz
- Department of Analytical Chemistry, School of Chemical Sciences, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Javier Paz-Ares
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas, Madrid 28049, Spain
| | - Gabriel Castrillo
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas, Madrid 28049, Spain.
| | - Antonio Leyva
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Científicas, Madrid 28049, Spain.
| |
Collapse
|
9
|
Ahammed GJ, Li CX, Li X, Liu A, Chen S, Zhou J. Overexpression of tomato RING E3 ubiquitin ligase gene SlRING1 confers cadmium tolerance by attenuating cadmium accumulation and oxidative stress. PHYSIOLOGIA PLANTARUM 2021; 173:449-459. [PMID: 33616963 DOI: 10.1111/ppl.13294] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/21/2020] [Accepted: 11/28/2020] [Indexed: 05/20/2023]
Abstract
Heavy metal pollution not only decreases crop yield and quality, but also affects human health via the food chain. Ubiquitination-dependent protein degradation is involved in plant growth, development, and environmental interaction, but the functions of ubiquitin-ligase (E3) genes are largely unknown in tomato (Solanum lycopersicum L.). Here, we functionally characterized a RING E3 ligase gene, SlRING1, which positively regulates cadmium (Cd) tolerance in tomato plants. An in vitro ubiquitination experiment shows that SlRING1 has E3 ubiquitin ligase activity. The determination of the subcellular localization reveals that SlRING1 is localized at both the plasma membrane and the nucleus. Overexpression of SlRING1 in tomato increased the chlorophyll content, the net photosynthetic rate, and the maximal photochemical efficiency of photosystem II (Fv/Fm), but reduced the levels of reactive oxygen species and relative electrolyte leakage under Cd stress. Moreover, SlRING1 overexpression increased the transcript levels of CATALASE (CAT), DEHYDROASCORBATE REDUCTASE (DHAR), MONODEHYDROASCORBATE REDUCTASE (MDHAR), GLUTATHIONE (GSH1), and PHYTOCHELATIN SYNTHASE (PCS), which contribute to the antioxidant and detoxification system. Crucially, SlRING1 overexpression also reduced the concentrations of Cd in both shoots and roots. Thus, SlRING1-overexpression-induced enhanced tolerance to Cd is ascribed to reduced Cd accumulation and alleviated oxidative stress. Our findings suggest that SlRING1 is a positive regulator of Cd tolerance, which can be a potential breeding target for improving heavy metal tolerance in horticultural crops.
Collapse
Affiliation(s)
- Golam Jalal Ahammed
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, China
| | - Cai-Xia Li
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Xin Li
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Airong Liu
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, China
| | - Shuangchen Chen
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, China
| | - Jie Zhou
- Department of Horticulture, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| |
Collapse
|
10
|
Kim JH, Lee JE, Jang CS. Regulation of Oryza sativa molybdate transporter1;3 degradation via RING finger E3 ligase OsAIR3. JOURNAL OF PLANT PHYSIOLOGY 2021; 264:153484. [PMID: 34343729 DOI: 10.1016/j.jplph.2021.153484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/19/2021] [Accepted: 07/25/2021] [Indexed: 05/29/2023]
Abstract
High concentrations of As in contaminated environments pose a serious threat to plant, human, and animal health. In this study, we characterized an As-responsive Really Interesting New Gene (RING) E3 ubiquitin ligase gene under arsenate (AsV) stress, named as Oryza sativa As-Induced RING E3 ligase 3 (OsAIR3). AsV treatment highly induced the expression of OsAIR3. OsAIR3-EYFP was localized to the nucleus in rice protoplasts and exhibited E3 ligase activity. Yeast two-hybrid screening and bimolecular fluorescence complementation and pull-down assays revealed the interaction of OsAIR3 with an O. sativa molybdate transporter (OsMOT1;3) in the plasma membrane and cytoplasm. In addition, an in vitro cell-free degradation assay was performed to demonstrate the degradation of OsMOT1;3 by OsAIR3 via the 26S proteasome system. Heterogeneous overexpression of OsAIR3 in Arabidopsis yielded AsV-tolerant phenotypes, as indicated by the comparison of cotyledon expansion, root elongation, shoot fresh weight, and As accumulation between the OsAIR3-overexpressing and control plants. Collectively, these findings suggest that OsAIR3 positively regulates plant response to AsV stress.
Collapse
Affiliation(s)
- Ju Hee Kim
- Plant Genomics Laboratory, Department of Bio-resources Sciences, Graduate School, Kangwon National University, Chuncheon, 24341, South Korea
| | - Jeong Eun Lee
- Plant Genomics Laboratory, Department of Bio-resources Sciences, Graduate School, Kangwon National University, Chuncheon, 24341, South Korea
| | - Cheol Seong Jang
- Plant Genomics Laboratory, Department of Bio-resources Sciences, Graduate School, Kangwon National University, Chuncheon, 24341, South Korea; Interdisciplinary Program in Smart Agriculture, Graduate School, Kangwon National University, Chuncheon, 24341, South Korea.
| |
Collapse
|
11
|
Vasumathy SK, Alagu M. SSR marker-based genetic diversity analysis and SNP haplotyping of genes associating abiotic and biotic stress tolerance, rice growth and development and yield across 93 rice landraces. Mol Biol Rep 2021; 48:5943-5953. [PMID: 34319545 DOI: 10.1007/s11033-021-06595-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 07/24/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND As rice is the staple food for more than half of the world's population, enhancing grain yield irrespective of the variable climatic conditions is indispensable. Many traditionally cultivated rice landraces are well adapted to severe environmental conditions and have high genetic diversity that could play an important role in crop improvement. METHODS AND RESULTS The present study revealed a high level of genetic diversity among the unexploited rice landraces cultivated by the farmers of Kerala. Twelve polymorphic markers detected a total of seventy- seven alleles with an average of 6.416 alleles per locus. Polymorphic Information Content (PIC) value ranged from 0.459 to 0.809, and to differentiate the rice genotypes, RM 242 was found to be the most appropriate marker with a high value of 0.809. The current study indicated that the rice landraces are highly diverse with higher values of the adequate number of alleles, PIC, and Shannon information index. Utilizing these informative SSR markers for future molecular characterization and population genetic studies in rice landraces are advisable. Haplotypes are sets of genomic regions within a chromosome inherited together, and haplotype-based breeding is a promising strategy for designing next-generation rice varieties. Here, haplotype analysis explored 270 haplotype blocks and 775 haplotypes from all the chromosomes of landraces under study. The number of SNPs in each haplotype block ranged from two to 28. Haplotypes of genes related to biotic and abiotic stress tolerance, yield-enhancing, and growth and development in rice landraces were also elucidated in the current study. CONCLUSIONS The present investigation revealed the genetic diversity of rice landraces and the haplotype analysis will open the way for genome-wide association studies, QTL identification, and marker-assisted selection in the unexplored rice landraces collected from Kerala.
Collapse
Affiliation(s)
| | - Manickavelu Alagu
- Department of Genomic Science, Central University of Kerala, Periye, Kasaragod, Kerala, 671316, India.
| |
Collapse
|
12
|
Das D, Sen P, Purkayastha S, Saha AK, Roy A, Rai P, Sen S, Saha S, Senapati BK, Biswas T, Bhattacharyya S. A perfect PCR based co-dominant marker for low grain-arsenic accumulation genotyping in rice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 212:111960. [PMID: 33513481 DOI: 10.1016/j.ecoenv.2021.111960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
The development of low arsenic-accumulating varieties for the contaminated areas is one of the best options for reducing the dietary exposure of arsenic to human population through rice. In this study, grain-arsenic content in one hundred genotypes revealed a large variation ranging from 0.05 mg/kg to 0.49 mg/kg. Compared to high accumulating variety, Shatabdi, 6-8 times the transcript upregulation of Arsenic sequestering ATP binding cassette C1 type gene (ABCC1), was observed in first internode of low accumulating variety Gobindabhog when 5 mg/kg of arsenite was present in soil. A comparison of the genomic sequence of OsABCC1 identified 8 SNPs between the two genotypes; 5 in introns and 3 silent mutations in exons. We identified a PCR based co-dominant marker targeting an SNP (T/G) between the two genotypes, which clearly distinguished 100 genotypes into low (mean 0.14 mg/kg) and high (mean 0.35 mg/kg) accumulating groups. All aromatic genotypes, either long or small grain, carry the Gobindabhog-type ABCC1 allele and are low accumulators of arsenic. Gobindabhog allele carrying 62 RILs and NILs showed almost 40-50% less As-accumulation in grains relative to 84 RILs and NILs carrying Shatabdi type ABCC1-allele. The marker will be useful in introgression of low accumulating allele of OsABCC1 into high yielding photoperiod insensitive varietal backgrounds more easily and accurately.
Collapse
Affiliation(s)
- Dibakar Das
- Department of Genetics and Plant Breeding, Crop Research Unit, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, PIN 741252, West Bengal, India
| | - Poulomi Sen
- Department of Genetics and Plant Breeding, Crop Research Unit, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, PIN 741252, West Bengal, India
| | - Shampa Purkayastha
- Department of Genetics and Plant Breeding, Crop Research Unit, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, PIN 741252, West Bengal, India
| | - Arup Kumar Saha
- Department of Genetics and Plant Breeding, Crop Research Unit, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, PIN 741252, West Bengal, India
| | - Anirban Roy
- Department of Genetics and Plant Breeding, Crop Research Unit, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, PIN 741252, West Bengal, India
| | - Pooja Rai
- Department of Genetics and Plant Breeding, Crop Research Unit, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, PIN 741252, West Bengal, India
| | - Shubhrajyoti Sen
- Department of Genetics and Plant Breeding, Crop Research Unit, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, PIN 741252, West Bengal, India
| | - Shoumik Saha
- Department of Genetics and Plant Breeding, Crop Research Unit, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, PIN 741252, West Bengal, India
| | - Bijoy Kumar Senapati
- Department of Genetics and Plant Breeding, Crop Research Unit, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, PIN 741252, West Bengal, India
| | - Tirthankar Biswas
- College of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Chatna Campus, PIN 722132, West Bengal, India
| | - Somnath Bhattacharyya
- Department of Genetics and Plant Breeding, Crop Research Unit, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, PIN 741252, West Bengal, India.
| |
Collapse
|
13
|
Sharma S, Prasad A, Sharma N, Prasad M. Role of ubiquitination enzymes in abiotic environmental interactions with plants. Int J Biol Macromol 2021; 181:494-507. [PMID: 33798570 DOI: 10.1016/j.ijbiomac.2021.03.185] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 02/08/2021] [Accepted: 03/27/2021] [Indexed: 12/14/2022]
Abstract
Ubiquitination, a post-translational modification, plays a crucial role in various aspects of plant development and stress responses. Protein degradation by ubiquitination is well established and ubiquitin is the main underlying component directing the turnover of proteins. Recent reports have also revealed the non-proteolytic roles of ubiquitination in plants. In the past decade, ubiquitination has emerged to be one of the most important players in modulating plant's responses to abiotic stresses, which led to identification of specific E3 ligases and their targets involved in the process. Most of the E3 ligases play regulatory roles by modifying the stability and accumulation of stress responsive regulatory proteins, such as transcription factors, thus, modifying the downstream responses, or by degrading the proteins involved in the downstream cascade itself. In this review, we summarize and highlight the recent advances in the field of ubiquitination-mediated regulation of plant's responses to various abiotic stresses including limited nutrient availability and metal toxicity. The non-proteolytic role of ubiquitination in epigenetic regulation of abiotic stress induced response has also been discussed.
Collapse
Affiliation(s)
- Shambhavi Sharma
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Ashish Prasad
- 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
| | - Manoj Prasad
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India.
| |
Collapse
|
14
|
The E3 ubiquitin ligase gene SlRING1 is essential for plant tolerance to cadmium stress in Solanum lycopersicum. J Biotechnol 2020; 324:239-247. [PMID: 33186659 DOI: 10.1016/j.jbiotec.2020.11.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/24/2020] [Accepted: 11/04/2020] [Indexed: 12/11/2022]
Abstract
The E3 ubiquitin ligases participate in the degradation of plant proteins and play a regulatory role in stress response. However, the role of tomato E3 ubiquitin ligase genes in plant response to heavy metal stress remains elusive. Here, we identified 17 tomato E3 ubiquitin ligase genes using blast analysis of highly expressed E3 ubiquitin ligase genes of Arabidopsis thaliana. Through organ expression analysis, three E3 ubiquitin ligase genes with higher expression levels in roots were further screened out, and they were named Sl1, SlRHE1, and SlRING1. Among these three genes, SlRING1 expression was the highest in response to cadmium (Cd) stress. Silencing SlRING1 significantly decreased chlorophyll content, Fv/Fm, photosynthetic rate, and biomass accumulation under Cd stress. The levels of H2O2, electrolyte leakage, and malondialdehyde significantly increased in SlRING1-silenced plants under Cd stress compared with that in non-silenced tomato plants. Cd stress-induced increases in the transcript levels of antioxidant and detoxification genes such as CAT, DHAR, MDHAR, GSH, and PCS were compromised by SlRING1 silencing. Moreover, Cd accumulation in shoots and roots significantly increased in SlRING1-silenced plants compared with non-silenced tomato plants. These findings suggest that SlRING1 plays a positive role in plant tolerance to Cd stress in tomato.
Collapse
|
15
|
Kim JH, Lim SD, Jang CS. Oryza sativa heat-induced RING finger protein 1 (OsHIRP1) positively regulates plant response to heat stress. PLANT MOLECULAR BIOLOGY 2019; 99:545-559. [PMID: 30730020 DOI: 10.1007/s11103-019-00835-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 01/30/2019] [Indexed: 05/16/2023]
Abstract
OsHIRP1 is an E3 ligase that acts as a positive regulator in the plant response to heat stress, thus providing important information relating to adaptation and regulation under heat stress in plant. Extreme temperature adversely affects plant growth, development, and productivity. Here, we report the molecular functions of Oryza sativa heat-induced RING finger protein 1 (OsHIRP1), which might play an important role in the response to heat. Transcription of the OsHIRP1 was upregulated in response to heat and drought treatment. We found that the OsHIRP1-EYFP fusion protein was localized to the nucleus after heat treatment (45 °C). Two interacting partners, OsARK4 and OsHRK1, were identified via yeast-two-hybrid screening, which were mainly targeted to the nucleus (OsARK4) and cytosol (OsHRK1), and their interactions with OsHIRP1 were confirmed by biomolecular fluorescence complementation (BiFC). An in vitro ubiquitination assay showed that OsHIRP1 E3 ligase directly ubiquitinates its interacting proteins, OsAKR4 and OsHRK1, as substrates. Using an in vitro cell-free degradation assay, we observed a clear reduction in the levels of the two proteins under high temperature (45 °C), but not under low temperature conditions (4 °C and 30 °C). Seeds of OsHIRP1-overexpressing plants exhibited high germination rates compared with the control under heat stress. The OsHIRP1-overexpressing plants presented high survival rates of approximately 62-68%, whereas control plants displayed a low recovery rate of 34% under condition of acquired thermo-tolerance. Some heat stress-inducible genes (HsfA3, HSP17.3, HSP18.2 and HSP20) were up-regulated in OsHIRP1-overexpressing Arabidopsis than control plants under heat stress conditions. Collectively, these results suggest that OsHIRP1, an E3 ligase, positively regulates plant response to heat stress.
Collapse
Affiliation(s)
- Ju Hee Kim
- Plant Genomics Laboratory, Department of Bio-resources Sciences, Kangwon National University, Chuncheon, 200-713, South Korea
| | - Sung Don Lim
- Plant Genomics Laboratory, Department of Bio-resources Sciences, Kangwon National University, Chuncheon, 200-713, South Korea
| | - Cheol Seong Jang
- Plant Genomics Laboratory, Department of Bio-resources Sciences, Kangwon National University, Chuncheon, 200-713, South Korea.
| |
Collapse
|
16
|
Suratanee A, Chokrathok C, Chutimanukul P, Khrueasan N, Buaboocha T, Chadchawan S, Plaimas K. Two-State Co-Expression Network Analysis to Identify Genes Related to Salt Tolerance in Thai rice. Genes (Basel) 2018; 9:E594. [PMID: 30501128 PMCID: PMC6316690 DOI: 10.3390/genes9120594] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 11/08/2018] [Accepted: 11/19/2018] [Indexed: 12/18/2022] Open
Abstract
Khao Dawk Mali 105 (KDML105) rice is one of the most important crops of Thailand. It is a challenging task to identify the genes responding to salinity in KDML105 rice. The analysis of the gene co-expression network has been widely performed to prioritize significant genes, in order to select the key genes in a specific condition. In this work, we analyzed the two-state co-expression networks of KDML105 rice under salt-stress and normal grown conditions. The clustering coefficient was applied to both networks and exhibited significantly different structures between the salt-stress state network and the original (normal-grown) network. With higher clustering coefficients, the genes that responded to the salt stress formed a dense cluster. To prioritize and select the genes responding to the salinity, we investigated genes with small partners under normal conditions that were highly expressed and were co-working with many more partners under salt-stress conditions. The results showed that the genes responding to the abiotic stimulus and relating to the generation of the precursor metabolites and energy were the great candidates, as salt tolerant marker genes. In conclusion, in the case of the complexity of the environmental conditions, gaining more information in order to deal with the co-expression network provides better candidates for further analysis.
Collapse
Affiliation(s)
- Apichat Suratanee
- Department of Mathematics, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok 10800, Thailand.
| | - Chidchanok Chokrathok
- Advanced Virtual and Intelligent Computing (AVIC) Center, Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Panita Chutimanukul
- Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
| | | | - Teerapong Buaboocha
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Supachitra Chadchawan
- Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Kitiporn Plaimas
- Advanced Virtual and Intelligent Computing (AVIC) Center, Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
| |
Collapse
|
17
|
Chapagain S, Park YC, Kim JH, Jang CS. Oryza sativa salt-induced RING E3 ligase 2 (OsSIRP2) acts as a positive regulator of transketolase in plant response to salinity and osmotic stress. PLANTA 2018; 247:925-939. [PMID: 29285618 DOI: 10.1007/s00425-017-2838-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 12/21/2017] [Indexed: 05/13/2023]
Abstract
A rice gene (OsSIRP2) encoding the RING Ub E3 ligase was highly induced under salinity stress and physically interacted with a transketolase (OsTKL1). Overexpression of OsSIRP2 conferred salinity and osmotic stress tolerance in plants. The RING E3 ligases play a vital role in post transitional modification through ubiquitination-mediated protein degradation that mediate plants responses during abiotic stresses and signal transduction. In this study, we report an Oryza sativa salt induced Really Interesting New Gene (RING) finger protein 2 gene (OsSIRP2) and elucidate its role under salinity and osmotic stress. The transcript levels of OsSIRP2 in rice leaves were induced in response to different abiotic stresses, such as salt, drought, heat, and abscisic acid (ABA) exposure. In vitro ubiquitination revealed that the OsSIRP2 protein formed poly-ubiquitin products, whereas a single amino acid substitution in OsSIRP2 (OsSIRP2C149A) in the RING domain did not form ubiquitinated substrates, supporting the hypothesis that E3 ligase activity requires the functional RING domain. Using the yeast two-hybrid (Y2H) assay, O. sativa transketolase 1 (OsTKL1) was identified as an interacting partner. OsSIRP2 was localized in the nucleus, whereas its interacting partner (OsTKL1) was localized in the cytosol and plastids in the rice protoplasts. Fluorescence signals between OsSIRP2 and OsTKL1 were observed in the cytosol. The pull-down assay confirmed the physical interaction between OsSIRP2 and OsTKL1. In vitro ubiquitination assay and in vitro protein degradation assay revealed that OsSIRP2 ubiquitinates OsTKL1 and enhances the degradation of OsTKL1 through the 26S proteasomal pathway. Heterogeneous overexpression of OsSIRP2 resulted in conferring tolerance against salinity and osmotic stress. Overall, our findings suggest that OsSIRP2 may be associated with plant responses to abiotic stresses and act as a positive regulator of salt and osmotic stress tolerance.
Collapse
Affiliation(s)
- Sandeep Chapagain
- Plant Genomics Laboratory, Department of Applied Plant Sciences, Kangwon National University, Chuncheon, 24341, Korea
| | - Yong Chan Park
- Plant Genomics Laboratory, Department of Applied Plant Sciences, Kangwon National University, Chuncheon, 24341, Korea
| | - Ju Hee Kim
- Plant Genomics Laboratory, Department of Applied Plant Sciences, Kangwon National University, Chuncheon, 24341, Korea
| | - Cheol Seong Jang
- Plant Genomics Laboratory, Department of Applied Plant Sciences, Kangwon National University, Chuncheon, 24341, Korea.
| |
Collapse
|
18
|
Functional diversity of RING E3 ligases of major cereal crops in response to abiotic stresses. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s12892-017-0104-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|