1
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Auler PA, Lemos MDS, Porto NP, Mendes KDR, Bret RSC, Daloso DM. Abscisic acid-mediated guard cell metabolism regulation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 214:108889. [PMID: 38954945 DOI: 10.1016/j.plaphy.2024.108889] [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: 12/11/2023] [Revised: 06/10/2024] [Accepted: 06/26/2024] [Indexed: 07/04/2024]
Abstract
Abscisic acid (ABA) is crucial for plant water deficit (WD) acclimation, but how the interplay between ABA and guard cell (GC) metabolism aids plant WD acclimation remains unclear. Here, we investigated how ABA regulates GC metabolism and how this contributes to plant WD acclimation using tomato wild type (WT) and the ABA-deficient sitiens mutant. These genotypes were characterized at physiological, metabolic, and transcriptional levels under recurring WD periods and were used to perform a13C-glucose labelling experiment using isolated guard cells following exogenously applied ABA. ABA deficiency altered the level of sugars and organic acids in GCs in both irrigated and WD plants and the dynamic of accumulation/degradation of these compounds in GCs during the dark-to-light transition. WD-induced metabolic changes were more pronounced in sitiens than WT GCs. Results from the 13C-labelling experiment indicate that ABA is required for the glycolytic fluxes toward malate and acts as a negative regulator of a putative sucrose substrate cycle. The expression of key ABA-biosynthetic genes was higher in WT than in sitiens GCs after two cycles of WD. Additionally, the intrinsic leaf water use efficiency increased only in WT after the second WD cycle, compared to sitiens. Our results highlight that ABA deficiency disrupts the homeostasis of GC primary metabolism and the WD memory, negatively affecting plant WD acclimation. Our study demonstrates which metabolic pathways are activated by WD and/or regulated by ABA in GCs, which improves our understanding of plant WD acclimation, with clear consequences for plant metabolic engineering in the future.
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Affiliation(s)
- Priscila A Auler
- LabPlant, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, 60451-970, Fortaleza, Ceará, Brazil
| | - Moaciria de S Lemos
- LabPlant, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, 60451-970, Fortaleza, Ceará, Brazil
| | - Nicole P Porto
- LabPlant, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, 60451-970, Fortaleza, Ceará, Brazil
| | - Kellyane da R Mendes
- LabPlant, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, 60451-970, Fortaleza, Ceará, Brazil
| | - Raissa S C Bret
- LabPlant, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, 60451-970, Fortaleza, Ceará, Brazil
| | - Danilo M Daloso
- LabPlant, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, 60451-970, Fortaleza, Ceará, Brazil.
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2
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Leonard AC, Friedman AJ, Chayer R, Petersen BM, Woojuh J, Xing Z, Cutler SR, Kaar JL, Shirts MR, Whitehead TA. Rationalizing Diverse Binding Mechanisms to the Same Protein Fold: Insights for Ligand Recognition and Biosensor Design. ACS Chem Biol 2024; 19:1757-1772. [PMID: 39017707 DOI: 10.1021/acschembio.4c00243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
The engineering of novel protein-ligand binding interactions, particularly for complex drug-like molecules, is an unsolved problem, which could enable many practical applications of protein biosensors. In this work, we analyzed two engineered biosensors, derived from the plant hormone sensor PYR1, to recognize either the agrochemical mandipropamid or the synthetic cannabinoid WIN55,212-2. Using a combination of quantitative deep mutational scanning experiments and molecular dynamics simulations, we demonstrated that mutations at common positions can promote protein-ligand shape complementarity and revealed prominent differences in the electrostatic networks needed to complement diverse ligands. MD simulations indicate that both PYR1 protein-ligand complexes bind a single conformer of their target ligand that is close to the lowest free-energy conformer. Computational design using a fixed conformer and rigid body orientation led to new WIN55,212-2 sensors with nanomolar limits of detection. This work reveals mechanisms by which the versatile PYR1 biosensor scaffold can bind diverse ligands. This work also provides computational methods to sample realistic ligand conformers and rigid body alignments that simplify the computational design of biosensors for novel ligands of interest.
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Affiliation(s)
- Alison C Leonard
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Anika J Friedman
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Rachel Chayer
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Brian M Petersen
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Janty Woojuh
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521-9800, United States
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, California 92521, United States
- Center for Plant Cell Biology, University of California, Riverside, Riverside, California 92521, United States
| | - Zenan Xing
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521-9800, United States
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, California 92521, United States
- Center for Plant Cell Biology, University of California, Riverside, Riverside, California 92521, United States
| | - Sean R Cutler
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521-9800, United States
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, California 92521, United States
- Center for Plant Cell Biology, University of California, Riverside, Riverside, California 92521, United States
| | - Joel L Kaar
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Michael R Shirts
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Timothy A Whitehead
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
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3
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Zhai Z, Ao Q, Yang L, Lu F, Cheng H, Fang Q, Li C, Chen Q, Yan J, Wei Y, Jiang YQ, Yang B. Rapeseed PP2C37 Interacts with PYR/PYL Abscisic Acid Receptors and Negatively Regulates Drought Tolerance. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:12445-12458. [PMID: 38771652 DOI: 10.1021/acs.jafc.4c00385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Global water deficit is a severe abiotic stress threatening the yielding and quality of crops. Abscisic acid (ABA) is a phytohormone that mediates drought tolerance. Protein kinases and phosphatases function as molecular switches in eukaryotes. Protein phosphatases type 2C (PP2Cs) are a major family that play essential roles in ABA signaling and stress responses. However, the role and underlying mechanism of PP2C in rapeseed (Brassica napus L.) mediating drought response has not been reported yet. Here, we characterized a PP2C family member, BnaPP2C37, and its expression level was highly induced by ABA and dehydration treatments. It negatively regulates drought tolerance in rapeseed. We further identified that BnaPP2C37 interacted with multiple PYR/PYL receptors and a drought regulator BnaCPK5 (calcium-dependent protein kinase 5) through yeast two-hybrid (Y2H) and bimolecular fluorescence complementation (BiFC) assays. Specifically, BnaPYL1 and BnaPYL9 repress BnaPP2C37 phosphatase activity. Moreover, the pull-down assay and phosphatase assays show BnaPP2C37 interacts with BnaCPK5 to dephosphorylate BnaCPK5 and its downstream BnaABF3. Furthermore, a dual-luciferase assay revealed BnaPP2C37 transcript level was enhanced by BnaABF3 and BnaABF4, forming a negative feedback regulation to ABA response. In summary, we identified that BnaPP2C37 functions negatively in drought tolerance of rapeseed, and its phosphatase activity is repressed by BnaPYL1/9 whereas its transcriptional level is upregulated by BnaABF3/4.
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Affiliation(s)
- Zengkang Zhai
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Qianqian Ao
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Liuqing Yang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Fangxiao Lu
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Haokun Cheng
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Qinxin Fang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Chun Li
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Qinqin Chen
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Jingli Yan
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, People's Republic of China
| | - Yongsheng Wei
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Yuan-Qing Jiang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Bo Yang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, People's Republic of China
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4
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Daffern N, Johansson KE, Baumer ZT, Robertson NR, Woojuh J, Bedewitz MA, Davis Z, Wheeldon I, Cutler SR, Lindorff-Larsen K, Whitehead TA. GMMA Can Stabilize Proteins Across Different Functional Constraints. J Mol Biol 2024; 436:168586. [PMID: 38663544 DOI: 10.1016/j.jmb.2024.168586] [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: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 05/06/2024]
Abstract
Stabilizing proteins without otherwise hampering their function is a central task in protein engineering and design. PYR1 is a plant hormone receptor that has been engineered to bind diverse small molecule ligands. We sought a set of generalized mutations that would provide stability without affecting functionality for PYR1 variants with diverse ligand-binding capabilities. To do this we used a global multi-mutant analysis (GMMA) approach, which can identify substitutions that have stabilizing effects and do not lower function. GMMA has the added benefit of finding substitutions that are stabilizing in different sequence contexts and we hypothesized that applying GMMA to PYR1 with different functionalities would identify this set of generalized mutations. Indeed, conducting FACS and deep sequencing of libraries for PYR1 variants with two different functionalities and applying a GMMA analysis identified 5 substitutions that, when inserted into four PYR1 variants that each bind a unique ligand, provided an increase of 2-6 °C in thermal inactivation temperature and no decrease in functionality.
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Affiliation(s)
- Nicolas Daffern
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80305, USA
| | - Kristoffer E Johansson
- Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Zachary T Baumer
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80305, USA
| | | | - Janty Woojuh
- Department of Botany and Plant Sciences, University of California, Riverside, USA
| | - Matthew A Bedewitz
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80305, USA
| | - Zoë Davis
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80305, USA
| | - Ian Wheeldon
- Department of Chemical and Environmental Engineering, University of California, Riverside, USA; Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
| | - Sean R Cutler
- Department of Botany and Plant Sciences, University of California, Riverside, USA; Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA; Center for Plant Cell Biology, University of California, Riverside, Riverside, CA, USA
| | - Kresten Lindorff-Larsen
- Linderstrøm-Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Copenhagen, Denmark.
| | - Timothy A Whitehead
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80305, USA.
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5
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Akter S, Castaneda-Méndez O, Beltrán J. Synthetic reprogramming of plant developmental and biochemical pathways. Curr Opin Biotechnol 2024; 87:103139. [PMID: 38691988 DOI: 10.1016/j.copbio.2024.103139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/16/2024] [Accepted: 04/16/2024] [Indexed: 05/03/2024]
Abstract
Plant synthetic biology (Plant SynBio) is an emerging field with the potential to enhance agriculture, human health, and sustainability. Integrating genetic tools and engineering principles, Plant SynBio aims to manipulate cellular functions and construct novel biochemical pathways to develop plants with new phenotypic traits, enhanced yield, and be able to produce natural products and pharmaceuticals. This review compiles research efforts in reprogramming plant developmental and biochemical pathways. We highlight studies leveraging new gene expression toolkits to alter plant architecture for improved performance in model and crop systems and to produce useful metabolites in plant tissues. Furthermore, we provide insights into the challenges and opportunities associated with the adoption of Plant SynBio in addressing complex issues impacting agriculture and human health.
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Affiliation(s)
- Shammi Akter
- Department of Plant and Soil Sciences, University of Delaware, Newark, DE 19716, USA; Delaware Biotechnology Institute, University of Delaware, 590 Avenue 1743, Newark, DE 19713, USA
| | - Oscar Castaneda-Méndez
- Department of Plant and Soil Sciences, University of Delaware, Newark, DE 19716, USA; Delaware Biotechnology Institute, University of Delaware, 590 Avenue 1743, Newark, DE 19713, USA
| | - Jesús Beltrán
- Department of Plant and Soil Sciences, University of Delaware, Newark, DE 19716, USA; Delaware Biotechnology Institute, University of Delaware, 590 Avenue 1743, Newark, DE 19713, USA.
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6
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Wei S, Li M, Lang X, Robertson NR, Park SY, Cutler SR, Wheeldon I. Repurposing plant hormone receptors as chemically-inducible genetic switches for dynamic regulation in yeast. Metab Eng 2024; 83:102-109. [PMID: 38554744 DOI: 10.1016/j.ymben.2024.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/28/2024] [Accepted: 03/25/2024] [Indexed: 04/02/2024]
Abstract
Precise control of gene expression is critical for optimizing cellular metabolism and improving the production of valuable biochemicals. However, hard-wired approaches to pathway engineering, such as optimizing promoters, can take time and effort. Moreover, limited tools exist for controlling gene regulation in non-conventional hosts. Here, we develop a two-channel chemically-regulated gene expression system for the multi-stress tolerant yeast Kluyveromyces marxianus and use it to tune ethyl acetate production, a native metabolite produced at high titers in this yeast. To achieve this, we repurposed the plant hormone sensing modules (PYR1ABA/HAB1 and PYR1*MANDI/HAB1*) for high dynamic-range gene activation and repression controlled by either abscisic acid (ABA) or mandipropamid (mandi). To redirect metabolic flux towards ethyl acetate biosynthesis, we simultaneously repress pyruvate dehydrogenase (PDA1) and activate pyruvate decarboxylase (PDC1) to enhance ethyl acetate titers. Thus, we have developed new tools for chemically tuning gene expression in K. marxianus and S. cerevisiae that should be deployable across many non-conventional eukaryotic hosts.
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Affiliation(s)
- Shuang Wei
- Biochemistry and Molecular Biology, University of California, Riverside, Riverside, CA, USA
| | - Mengwan Li
- Chemical and Environmental Engineering, University of California, Riverside, Riverside, CA, USA
| | - Xuye Lang
- Chemical and Environmental Engineering, University of California, Riverside, Riverside, CA, USA
| | - Nicholas R Robertson
- Chemical and Environmental Engineering, University of California, Riverside, Riverside, CA, USA
| | - Sang-Youl Park
- Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | - Sean R Cutler
- Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA; Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
| | - Ian Wheeldon
- Chemical and Environmental Engineering, University of California, Riverside, Riverside, CA, USA; Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA; Center for Industrial Biotechnology, University of California, Riverside, Riverside, CA, USA.
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7
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Leonard AC, Friedman AJ, Chayer R, Petersen BM, Kaar J, Shirts MR, Whitehead TA. Rationalizing diverse binding mechanisms to the same protein fold: insights for ligand recognition and biosensor design. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.25.586677. [PMID: 38586024 PMCID: PMC10996623 DOI: 10.1101/2024.03.25.586677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
The engineering of novel protein-ligand binding interactions, particularly for complex drug-like molecules, is an unsolved problem which could enable many practical applications of protein biosensors. In this work, we analyzed two engineer ed biosensors, derived from the plant hormone sensor PYR1, to recognize either the agrochemical mandipropamid or the synthetic cannabinoid WIN55,212-2. Using a combination of quantitative deep mutational scanning experiments and molecular dynamics simulations, we demonstrated that mutations at common positions can promote protein-ligand shape complementarity and revealed prominent differences in the electrostatic networks needed to complement diverse ligands. MD simulations indicate that both PYR1 protein-ligand complexes bind a single conformer of their target ligand that is close to the lowest free energy conformer. Computational design using a fixed conformer and rigid body orientation led to new WIN55,212-2 sensors with nanomolar limits of detection. This work reveals mechanisms by which the versatile PYR1 biosensor scaffold can bind diverse ligands. This work also provides computational methods to sample realistic ligand conformers and rigid body alignments that simplify the computational design of biosensors for novel ligands of interest.
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8
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Li Z, Liu J, Chen Y, Liang A, He W, Qin X, Qin K, Mu Z. Genome-Wide Identification of PYL/RCAR ABA Receptors and Functional Analysis of LbPYL10 in Heat Tolerance in Goji ( Lycium barbarum). PLANTS (BASEL, SWITZERLAND) 2024; 13:887. [PMID: 38592885 PMCID: PMC10975129 DOI: 10.3390/plants13060887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 04/11/2024]
Abstract
The characterization of the PYL/RCAR ABA receptors in a great deal of plant species has dramatically advanced the study of ABA functions involved in key physiological processes. However, the genes in this family are still unclear in Lycium (Goji) plants, one of the well-known economically, medicinally, and ecologically valuable fruit crops. In the present work, 12 homologs of Arabidopsis PYL/RCAR ABA receptors were first identified and characterized from Lycium (L.) barbarum (LbPYLs). The quantitative real-time PCR (qRT-PCR) analysis showed that these genes had clear tissue-specific expression patterns, and most of them were transcribed in the root with the largest amount. Among the three subfamilies, while the Group I and Group III members were down-regulated by extraneous ABA, the Group II members were up-regulated. At 42 °C, most transcripts showed a rapid and violent up-regulation response to higher temperature, especially members of Group II. One of the genes in the Group II members, LbPYL10, was further functionally validated by virus-induced gene silencing (VIGS) technology. LbPYL10 positively regulates heat stress tolerance in L. barbarum by alleviating chlorophyll degradation, thus maintaining chlorophyll stability. Integrating the endogenous ABA level increase following heat stress, it may be concluded that LbPYL-mediated ABA signaling plays a vital role in the thermotolerance of L. barbarum plants. Our results highlight the strong potential of LbPYL genes in breeding genetically modified L. barbarum crops that acclimate to climate change.
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Affiliation(s)
- Zeyu Li
- College of Life Sciences, Northwest A&F University, Yangling 712100, China; (Z.L.); (J.L.); (Y.C.); (W.H.)
| | - Jiyao Liu
- College of Life Sciences, Northwest A&F University, Yangling 712100, China; (Z.L.); (J.L.); (Y.C.); (W.H.)
| | - Yan Chen
- College of Life Sciences, Northwest A&F University, Yangling 712100, China; (Z.L.); (J.L.); (Y.C.); (W.H.)
| | - Aihua Liang
- College of Life Sciences & Technology, Tarim University, Alaer 843300, China;
- State Key Laboratory Breeding Base for the Protection and Utilization of Biological Resources in Tarim Basin Co–Funded by Xinjiang Corps and the Ministry of Science and Technology, Alaer 843300, China
| | - Wei He
- College of Life Sciences, Northwest A&F University, Yangling 712100, China; (Z.L.); (J.L.); (Y.C.); (W.H.)
| | - Xiaoya Qin
- National Wolfberry Engineering Research Center, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China;
| | - Ken Qin
- National Wolfberry Engineering Research Center, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China;
| | - Zixin Mu
- College of Life Sciences & Technology, Tarim University, Alaer 843300, China;
- State Key Laboratory Breeding Base for the Protection and Utilization of Biological Resources in Tarim Basin Co–Funded by Xinjiang Corps and the Ministry of Science and Technology, Alaer 843300, China
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9
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Zhang J, Chen X, Song Y, Gong Z. Integrative regulatory mechanisms of stomatal movements under changing climate. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024; 66:368-393. [PMID: 38319001 DOI: 10.1111/jipb.13611] [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: 11/07/2023] [Accepted: 01/04/2024] [Indexed: 02/07/2024]
Abstract
Global climate change-caused drought stress, high temperatures and other extreme weather profoundly impact plant growth and development, restricting sustainable crop production. To cope with various environmental stimuli, plants can optimize the opening and closing of stomata to balance CO2 uptake for photosynthesis and water loss from leaves. Guard cells perceive and integrate various signals to adjust stomatal pores through turgor pressure regulation. Molecular mechanisms and signaling networks underlying the stomatal movements in response to environmental stresses have been extensively studied and elucidated. This review focuses on the molecular mechanisms of stomatal movements mediated by abscisic acid, light, CO2 , reactive oxygen species, pathogens, temperature, and other phytohormones. We discussed the significance of elucidating the integrative mechanisms that regulate stomatal movements in helping design smart crops with enhanced water use efficiency and resilience in a climate-changing world.
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Affiliation(s)
- Jingbo Zhang
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 100193, China
| | - Xuexue Chen
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yajing Song
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing, 100193, China
| | - Zhizhong Gong
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing, 100094, China
- Institute of Life Science and Green Development, School of Life Sciences, Hebei University, Baoding, 071001, China
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10
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Yaschenko AE, Alonso JM, Stepanova AN. Arabidopsis as a model for translational research. THE PLANT CELL 2024:koae065. [PMID: 38411602 DOI: 10.1093/plcell/koae065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 02/28/2024]
Abstract
Arabidopsis thaliana is currently the most-studied plant species on earth, with an unprecedented number of genetic, genomic, and molecular resources having been generated in this plant model. In the era of translating foundational discoveries to crops and beyond, we aimed to highlight the utility and challenges of using Arabidopsis as a reference for applied plant biology research, agricultural innovation, biotechnology, and medicine. We hope that this review will inspire the next generation of plant biologists to continue leveraging Arabidopsis as a robust and convenient experimental system to address fundamental and applied questions in biology. We aim to encourage lab and field scientists alike to take advantage of the vast Arabidopsis datasets, annotations, germplasm, constructs, methods, molecular and computational tools in our pursuit to advance understanding of plant biology and help feed the world's growing population. We envision that the power of Arabidopsis-inspired biotechnologies and foundational discoveries will continue to fuel the development of resilient, high-yielding, nutritious plants for the betterment of plant and animal health and greater environmental sustainability.
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Affiliation(s)
- Anna E Yaschenko
- Department of Plant and Microbial Biology, Genetics and Genomics Academy, North Carolina State University, Raleigh, NC 27695, USA
| | - Jose M Alonso
- Department of Plant and Microbial Biology, Genetics and Genomics Academy, North Carolina State University, Raleigh, NC 27695, USA
| | - Anna N Stepanova
- Department of Plant and Microbial Biology, Genetics and Genomics Academy, North Carolina State University, Raleigh, NC 27695, USA
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11
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Park SY, Qiu J, Wei S, Peterson FC, Beltrán J, Medina-Cucurella AV, Vaidya AS, Xing Z, Volkman BF, Nusinow DA, Whitehead TA, Wheeldon I, Cutler SR. An orthogonalized PYR1-based CID module with reprogrammable ligand-binding specificity. Nat Chem Biol 2024; 20:103-110. [PMID: 37872402 PMCID: PMC10746540 DOI: 10.1038/s41589-023-01447-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 09/13/2023] [Indexed: 10/25/2023]
Abstract
Plants sense abscisic acid (ABA) using chemical-induced dimerization (CID) modules, including the receptor PYR1 and HAB1, a phosphatase inhibited by ligand-activated PYR1. This system is unique because of the relative ease with which ligand recognition can be reprogrammed. To expand the PYR1 system, we designed an orthogonal '*' module, which harbors a dimer interface salt bridge; X-ray crystallographic, biochemical and in vivo analyses confirm its orthogonality. We used this module to create PYR1*MANDI/HAB1* and PYR1*AZIN/HAB1*, which possess nanomolar sensitivities to their activating ligands mandipropamid and azinphos-ethyl. Experiments in Arabidopsis thaliana and Saccharomyces cerevisiae demonstrate the sensitive detection of banned organophosphate contaminants using living biosensors and the construction of multi-input/output genetic circuits. Our new modules enable ligand-programmable multi-channel CID systems for plant and eukaryotic synthetic biology that can empower new plant-based and microbe-based sensing modalities.
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Affiliation(s)
- Sang-Youl Park
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
| | - Jingde Qiu
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
| | - Shuang Wei
- Department of Biochemistry, University of California, Riverside, Riverside, CA, USA
| | - Francis C Peterson
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Jesús Beltrán
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
- Department of Plant and Soil Sciences, Delaware Biotechnology Institute, University of Delaware, Newark, DE, USA
| | | | - Aditya S Vaidya
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
| | - Zenan Xing
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
| | - Brian F Volkman
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Timothy A Whitehead
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA
| | - Ian Wheeldon
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA.
- Department of Chemical and Environmental Engineering, University of California, Riverside, Riverside, CA, USA.
- Center for Industrial Biotechnology, University of California, Riverside, Riverside, CA, USA.
| | - Sean R Cutler
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA.
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA.
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12
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Koh H, Joo H, Lim CW, Lee SC. Roles of the pepper JAZ protein CaJAZ1-03 and its interacting partner RING-type E3 ligase CaASRF1 in regulating ABA signaling and drought responses. PLANT, CELL & ENVIRONMENT 2023; 46:3242-3257. [PMID: 37563998 DOI: 10.1111/pce.14692] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 07/29/2023] [Indexed: 08/12/2023]
Abstract
Plants have developed various defense mechanisms against environmental stresses by regulating hormone signaling. Jasmonic acid (JA) is a major phytohormone associated with plant defense responses. JASMONATE ZIM-DOMAIN (JAZ) proteins play a regulatory role in repressing JA signaling, impacting plant responses to both biotic and abiotic stresses. Here, we isolated 7 JAZ genes in pepper and selected CA03g31030, a Capsicum annuum JAZ1-03 (CaJAZ1-03) gene, for further study based on its expression level in response to abiotic stresses. Through virus-induced gene silencing (VIGS) in pepper and overexpression in transgenic Arabidopsis plants, we established the functional role of CaJAZ1-03. Functional studies revealed that CaJAZ1-03 dampens abscisic acid (ABA) signaling and drought stress responses. The cell-free degradation assay showed faster degradation of CaJAZ1-03 in drought- or ABA-treated pepper leaves compared to healthy leaves. Conversely, CaJAZ1-03 was completely preserved under MG132 treatment, indicating that CaJAZ1-03 stability is modulated via the ubiquitin-26s proteasome pathway. We also found that the pepper RING-type E3 ligase CaASRF1 interacts with and ubiquitinates CaJAZ1-03. Additional cell-free degradation assays revealed a negative correlation between CaJAZ1-03 and CaASRF1 expression levels. Collectively, these findings suggest that CaJAZ1-03 negatively regulates ABA signaling and drought responses and that its protein stability is modulated by CaASRF1.
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Affiliation(s)
- Haeji Koh
- Department of Life Science (BK21 Program), Chung-Ang University, Seoul, Korea
| | - Hyunhee Joo
- Department of Life Science (BK21 Program), Chung-Ang University, Seoul, Korea
| | - Chae Woo Lim
- Department of Life Science (BK21 Program), Chung-Ang University, Seoul, Korea
| | - Sung Chul Lee
- Department of Life Science (BK21 Program), Chung-Ang University, Seoul, Korea
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13
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Liao Z, Zhang Y, Yu Q, Fang W, Chen M, Li T, Liu Y, Liu Z, Chen L, Yu S, Xia H, Xue HW, Yu H, Luo L. Coordination of growth and drought responses by GA-ABA signaling in rice. THE NEW PHYTOLOGIST 2023; 240:1149-1161. [PMID: 37602953 DOI: 10.1111/nph.19209] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 07/26/2023] [Indexed: 08/22/2023]
Abstract
The drought caused by global warming seriously affects the crop growth and agricultural production. Plants have evolved distinct strategies to cope with the drought environment. Under drought stress, energy and resources should be diverted from growth toward stress management. However, the molecular mechanism underlying coordination of growth and drought response remains largely elusive. Here, we discovered that most of the gibberellin (GA) metabolic genes were regulated by water scarcity in rice, leading to the lower GA contents and hence inhibited plant growth. Low GA contents resulted in the accumulation of more GA signaling negative regulator SLENDER RICE 1, which inhibited the degradation of abscisic acid (ABA) receptor PYL10 by competitively binding to the co-activator of anaphase-promoting complex TAD1, resulting in the enhanced ABA response and drought tolerance. These results elucidate the synergistic regulation of crop growth inhibition and promotion of drought tolerance and survival, and provide useful genetic resource in breeding improvement of crop drought resistance.
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Affiliation(s)
- Zhigang Liao
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai, 201106, China
| | - Yunchao Zhang
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
| | - Qing Yu
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Weicong Fang
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Meiyao Chen
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Tianfei Li
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai, 201106, China
| | - Yi Liu
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai, 201106, China
| | - Zaochang Liu
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai, 201106, China
| | - Liang Chen
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai, 201106, China
| | - Shunwu Yu
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai, 201106, China
| | - Hui Xia
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai, 201106, China
| | - Hong-Wei Xue
- Shanghai Collaborative Innovation Center of Agri-Seeds, Joint Center for Single Cell Biology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hong Yu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Lijun Luo
- Shanghai Collaborative Innovation Center of Agri-Seeds, Shanghai Agrobiological Gene Center, Shanghai, 201106, China
- Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai, 201106, China
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14
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Li Z, Shen Y, Beltrán J, Tian H, Bedewitz M, Wheeldon I, Whitehead TA, Cutler SR, Zhong W. High-Performance Cannabinoid Sensor Empowered by Plant Hormone Receptors and Antifouling Magnetic Nanorods. ACS Sens 2023; 8:3914-3922. [PMID: 37737572 PMCID: PMC11288662 DOI: 10.1021/acssensors.3c01488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
The misuse of cannabinoids and their synthetic variants poses significant threats to public health, necessitating the development of advanced techniques for detection of these compounds in biological or environmental samples. Existing methods face challenges like lengthy sample pretreatment and laborious antifouling steps. Herein, we present a novel sensing platform using magnetic nanorods coated with zwitterionic polymers for the simple, rapid, and sensitive detection of cannabinoids in biofluids. Our technique utilizes the engineered derivatives of the plant hormone receptor Pyrabactin Resistance 1 (PYR1) as drug recognition elements and employs the chemical-induced dimerization (CID) mechanism for signal development. Additionally, the magnetic nanorods facilitate efficient target capture and reduce the assay duration. Moreover, the zwitterionic polymer coating exhibits excellent antifouling capability, preserving excellent sensor performance in complex biofluids. Our sensors detect cannabinoids in undiluted biofluids like serum, saliva, and urine with a low limit of detection (0.002 pM in saliva and few pM in urine and serum) and dynamic ranges spanning up to 9 orders of magnitude. Moreover, the PYR1 derivatives demonstrate high specificity even in the presence of multiple interfering compounds. This work opens new opportunities for sensor development, showcasing the excellent performance of antifouling magnetic nanorods that can be compatible with different recognition units, including receptors and antibodies, for detecting a variety of targets.
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Affiliation(s)
- Zongbo Li
- Department of Chemistry, University of California-Riverside, Riverside, CA 92521, U.S.A
| | - Yuyang Shen
- Environmental Toxicology Graduate Program, University of California-Riverside, Riverside, CA 92521, U.S.A
| | - Jesús Beltrán
- Department of Botany and Plant Sciences, University of California-Riverside, Riverside, CA 92521, U.S.A
- Institute for Integrative Genome Biology, University of California-Riverside, Riverside, CA 92521, U.S.A
| | - Hao Tian
- Department of Botany and Plant Sciences, University of California-Riverside, Riverside, CA 92521, U.S.A
- Institute for Integrative Genome Biology, University of California-Riverside, Riverside, CA 92521, U.S.A
| | - Matthew Bedewitz
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Ian Wheeldon
- Institute for Integrative Genome Biology, University of California-Riverside, Riverside, CA 92521, U.S.A
- Department of Chemical and Environmental Engineering, University of California-Riverside, Riverside, CA 92521, U.S.A
| | - Timothy A. Whitehead
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Sean R. Cutler
- Department of Botany and Plant Sciences, University of California-Riverside, Riverside, CA 92521, U.S.A
- Institute for Integrative Genome Biology, University of California-Riverside, Riverside, CA 92521, U.S.A
| | - Wenwan Zhong
- Department of Chemistry, University of California-Riverside, Riverside, CA 92521, U.S.A
- Environmental Toxicology Graduate Program, University of California-Riverside, Riverside, CA 92521, U.S.A
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15
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Yang EJ, Nemhauser JL. Building a pipeline to identify and engineer constitutive and repressible promoters. QUANTITATIVE PLANT BIOLOGY 2023; 4:e12. [PMID: 37901686 PMCID: PMC10600573 DOI: 10.1017/qpb.2023.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 07/24/2023] [Accepted: 09/13/2023] [Indexed: 10/31/2023]
Abstract
To support the increasingly complex circuits needed for plant synthetic biology applications, additional constitutive promoters are essential. Reusing promoter parts can lead to difficulty in cloning, increased heterogeneity between transformants, transgene silencing and trait instability. We have developed a pipeline to identify genes that have stable expression across a wide range of Arabidopsis tissues at different developmental stages and have identified a number of promoters that are well expressed in both transient (Nicotiana benthamiana) and stable (Arabidopsis) transformation assays. We have also introduced two genome-orthogonal gRNA target sites in a subset of the screened promoters, converting them into NOR logic gates. The work here establishes a pipeline to screen for additional constitutive promoters and can form the basis of constructing more complex information processing circuits in the future.
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Affiliation(s)
- Eric J.Y. Yang
- Department of Biology, University of Washington, Seattle, WA, USA
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16
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Liu S, Zenda T, Tian Z, Huang Z. Metabolic pathways engineering for drought or/and heat tolerance in cereals. FRONTIERS IN PLANT SCIENCE 2023; 14:1111875. [PMID: 37810398 PMCID: PMC10557149 DOI: 10.3389/fpls.2023.1111875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 09/04/2023] [Indexed: 10/10/2023]
Abstract
Drought (D) and heat (H) are the two major abiotic stresses hindering cereal crop growth and productivity, either singly or in combination (D/+H), by imposing various negative impacts on plant physiological and biochemical processes. Consequently, this decreases overall cereal crop production and impacts global food availability and human nutrition. To achieve global food and nutrition security vis-a-vis global climate change, deployment of new strategies for enhancing crop D/+H stress tolerance and higher nutritive value in cereals is imperative. This depends on first gaining a mechanistic understanding of the mechanisms underlying D/+H stress response. Meanwhile, functional genomics has revealed several stress-related genes that have been successfully used in target-gene approach to generate stress-tolerant cultivars and sustain crop productivity over the past decades. However, the fast-changing climate, coupled with the complexity and multigenic nature of D/+H tolerance suggest that single-gene/trait targeting may not suffice in improving such traits. Hence, in this review-cum-perspective, we advance that targeted multiple-gene or metabolic pathway manipulation could represent the most effective approach for improving D/+H stress tolerance. First, we highlight the impact of D/+H stress on cereal crops, and the elaborate plant physiological and molecular responses. We then discuss how key primary metabolism- and secondary metabolism-related metabolic pathways, including carbon metabolism, starch metabolism, phenylpropanoid biosynthesis, γ-aminobutyric acid (GABA) biosynthesis, and phytohormone biosynthesis and signaling can be modified using modern molecular biotechnology approaches such as CRISPR-Cas9 system and synthetic biology (Synbio) to enhance D/+H tolerance in cereal crops. Understandably, several bottlenecks hinder metabolic pathway modification, including those related to feedback regulation, gene functional annotation, complex crosstalk between pathways, and metabolomics data and spatiotemporal gene expressions analyses. Nonetheless, recent advances in molecular biotechnology, genome-editing, single-cell metabolomics, and data annotation and analysis approaches, when integrated, offer unprecedented opportunities for pathway engineering for enhancing crop D/+H stress tolerance and improved yield. Especially, Synbio-based strategies will accelerate the development of climate resilient and nutrient-dense cereals, critical for achieving global food security and combating malnutrition.
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Affiliation(s)
- Songtao Liu
- Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, Hebei North University, Zhangjiakou, China
| | - Tinashe Zenda
- State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, China
| | - Zaimin Tian
- Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, Hebei North University, Zhangjiakou, China
| | - Zhihong Huang
- Hebei Key Laboratory of Quality & Safety Analysis-Testing for Agro-Products and Food, Hebei North University, Zhangjiakou, China
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17
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Wang J, Li C, Li L, Gao L, Hu G, Zhang Y, Reynolds MP, Zhang X, Jia J, Mao X, Jing R. DIW1 encoding a clade I PP2C phosphatase negatively regulates drought tolerance by de-phosphorylating TaSnRK1.1 in wheat. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:1918-1936. [PMID: 37158049 DOI: 10.1111/jipb.13504] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 04/05/2023] [Accepted: 05/08/2023] [Indexed: 05/10/2023]
Abstract
Drought seriously impacts wheat production (Triticum aestivum L.), while the exploitation and utilization of genes for drought tolerance are insufficient. Leaf wilting is a direct reflection of drought tolerance in plants. Clade A PP2Cs are abscisic acid (ABA) co-receptors playing vital roles in the ABA signaling pathway, regulating drought response. However, the roles of other clade PP2Cs in drought tolerance, especially in wheat, remain largely unknown. Here, we identified a gain-of-function drought-induced wilting 1 (DIW1) gene from the wheat Aikang 58 mutant library by map-based cloning, which encodes a clade I protein phosphatase 2C (TaPP2C158) with enhanced protein phosphatase activity. Phenotypic analysis of overexpression and CRISPR/Cas9 mutant lines demonstrated that DIW1/TaPP2C158 is a negative regulator responsible for drought resistance. We found that TaPP2C158 directly interacts with TaSnRK1.1 and de-phosphorylates it, thus inactivating the TaSnRK1.1-TaAREB3 pathway. TaPP2C158 protein phosphatase activity is negatively correlated with ABA signaling. Association analysis suggested that C-terminal variation of TaPP2C158 changing protein phosphatase activity is highly correlated with the canopy temperature, and seedling survival rate under drought stress. Our data suggest that the favorable allele with lower phosphatase activity of TaPP2C158 has been positively selected in Chinese breeding history. This work benefits us in understanding the molecular mechanism of wheat drought tolerance, and provides elite genetic resources and molecular markers for improving wheat drought tolerance.
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Affiliation(s)
- Jingyi Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Chaonan Li
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Long Li
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Lifeng Gao
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ge Hu
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yanfei Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Matthew P Reynolds
- International Maize and Wheat Improvement Center, Texcoco, 56237, Mexico
| | - Xueyong Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jizeng Jia
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xinguo Mao
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ruilian Jing
- National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
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18
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Jing Y, Yang Z, Yang R, Zhang Y, Qiao W, Zhou Y, Sun J. PKL is stabilized by MMS21 to negatively regulate Arabidopsis drought tolerance through directly repressing AFL1 transcription. THE NEW PHYTOLOGIST 2023. [PMID: 37209253 DOI: 10.1111/nph.18972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 04/20/2023] [Indexed: 05/22/2023]
Abstract
Drought stress causes substantial losses in crop production per year worldwide, threatening global food security. Identification of the genetic components underlying drought tolerance in plants is of great importance. In this study, we report that loss-of-function of the chromatin-remodeling factor PICKLE (PKL), which is involved in repression of transcription, enhances drought tolerance of Arabidopsis. At first, we find that PKL interacts with ABI5 to regulate seed germination, but PKL regulates drought tolerance independently of ABI5. Then, we find that PKL is necessary for repressing the drought-tolerant gene AFL1, which is responsible for the drought-tolerant phenotype of pkl mutant. Genetic complementation tests demonstrate that the Chromo domain and ATPase domain but not the PHD domain are required for the function of PKL in regulating drought tolerance. Interestingly, we find that the DNA-binding domain (DBD) is essential for the protein stability of PKL. Furthermore, we demonstrate that the SUMO E3 ligase MMS21 interacts with and enhances the protein stability of PKL. Genetic interaction analysis shows that MMS21 and PKL additively regulate plant drought tolerance. Collectively, our findings uncover a MMS21-PKL-AFL1 module in regulating plant drought tolerance and offer insights into a novel strategy to improve crop drought tolerance.
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Affiliation(s)
- Yexing Jing
- State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ziyi Yang
- State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ruizhen Yang
- State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yunwei Zhang
- State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Weihua Qiao
- State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yun Zhou
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475001, China
| | - Jiaqiang Sun
- State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
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19
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Lozano-Juste J, Infantes L, Garcia-Maquilon I, Ruiz-Partida R, Merilo E, Benavente JL, Velazquez-Campoy A, Coego A, Bono M, Forment J, Pampín B, Destito P, Monteiro A, Rodríguez R, Cruces J, Rodriguez PL, Albert A. Structure-guided engineering of a receptor-agonist pair for inducible activation of the ABA adaptive response to drought. SCIENCE ADVANCES 2023; 9:eade9948. [PMID: 36897942 PMCID: PMC10005185 DOI: 10.1126/sciadv.ade9948] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 02/08/2023] [Indexed: 06/01/2023]
Abstract
Strategies to activate abscisic acid (ABA) receptors and boost ABA signaling by small molecules that act as ABA receptor agonists are promising biotechnological tools to enhance plant drought tolerance. Protein structures of crop ABA receptors might require modifications to improve recognition of chemical ligands, which in turn can be optimized by structural information. Through structure-based targeted design, we have combined chemical and genetic approaches to generate an ABA receptor agonist molecule (iSB09) and engineer a CsPYL1 ABA receptor, named CsPYL15m, which efficiently binds iSB09. This optimized receptor-agonist pair leads to activation of ABA signaling and marked drought tolerance. No constitutive activation of ABA signaling and hence growth penalty was observed in transformed Arabidopsis thaliana plants. Therefore, conditional and efficient activation of ABA signaling was achieved through a chemical-genetic orthogonal approach based on iterative cycles of ligand and receptor optimization driven by the structure of ternary receptor-ligand-phosphatase complexes.
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Affiliation(s)
- Jorge Lozano-Juste
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, 46022 Valencia, Spain
| | - Lourdes Infantes
- Instituto de Química Física Rocasolano, Consejo Superior de Investigaciones Científicas, 28006 Madrid, Spain
| | - Irene Garcia-Maquilon
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, 46022 Valencia, Spain
| | - Rafael Ruiz-Partida
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, 46022 Valencia, Spain
| | - Ebe Merilo
- Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia
| | - Juan Luis Benavente
- Instituto de Química Física Rocasolano, Consejo Superior de Investigaciones Científicas, 28006 Madrid, Spain
| | - Adrian Velazquez-Campoy
- Institute of Biocomputation and Physics of Complex Systems (BIFI), Joint Units GBsC-CSIC-BIFI and ICVV-CSIC-BIFI, Universidad de Zaragoza, Mariano Esquillor s/n, 50018 Zaragoza, Spain
- Departamento de Bioquímica y Biología Molecular y Celular, Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), Avenida de San Juan Bosco 13, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red en el Área Temática de Enfermedades Hepáticas y Digestivas (CIBERehd), Avenida de Monforte de Lemos, 3-5, 28029 Madrid, Spain
| | - Alberto Coego
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, 46022 Valencia, Spain
| | - Mar Bono
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, 46022 Valencia, Spain
| | - Javier Forment
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, 46022 Valencia, Spain
| | - Begoña Pampín
- GalChimia S.A., Parque Empresarial de Touro, Parcelas 26-27, Fonte Díaz, 15822 Touro, A Coruña, Spain
| | - Paolo Destito
- GalChimia S.A., Parque Empresarial de Touro, Parcelas 26-27, Fonte Díaz, 15822 Touro, A Coruña, Spain
| | - Adrián Monteiro
- GalChimia S.A., Parque Empresarial de Touro, Parcelas 26-27, Fonte Díaz, 15822 Touro, A Coruña, Spain
| | - Ramón Rodríguez
- GalChimia S.A., Parque Empresarial de Touro, Parcelas 26-27, Fonte Díaz, 15822 Touro, A Coruña, Spain
| | - Jacobo Cruces
- GalChimia S.A., Parque Empresarial de Touro, Parcelas 26-27, Fonte Díaz, 15822 Touro, A Coruña, Spain
| | - Pedro L. Rodriguez
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas, Universidad Politécnica de Valencia, 46022 Valencia, Spain
| | - Armando Albert
- Instituto de Química Física Rocasolano, Consejo Superior de Investigaciones Científicas, 28006 Madrid, Spain
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20
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Roeder J, Liu J, Doch I, Ruschhaupt M, Christmann A, Grill E, Helmke H, Hohmann S, Lehr S, Frackenpohl J, Yang Z. Abscisic acid agonists suitable for optimizing plant water use. FRONTIERS IN PLANT SCIENCE 2023; 13:1071710. [PMID: 36743550 PMCID: PMC9894685 DOI: 10.3389/fpls.2022.1071710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 12/28/2022] [Indexed: 06/18/2023]
Abstract
Climate change and overexploitation of groundwater resources cause constraints on water demand for agriculture, thus threatening crop productivity. For future food security, there is an urgent need for crops of high water use efficiency combined with high crop productivity, i.e. having high water productivity. High water productivity means efficient biomass accumulation at reduced transpiration. Recent studies show that plants are able to optimize carbon uptake per water transpired with little or no trade-off in yield. The phytohormone abscisic acid (ABA) plays a pivotal role in minimizing leaf transpiration and mediating enhanced water productivity. Hence, ABA and more chemically stable ABA agonists have the potential to improve crop water productivity. Synthesis, screening, and identification of suitable ABA agonists are major efforts currently undertaken. In this study, we used yeast expressing the plant ABA signal pathway to prescreen ABA-related cyano cyclopropyl compounds (CCPs). The yeast analysis allowed testing the ABA agonists for general toxicity, efficient uptake, and specificity in regulating different ABA receptor complexes. Subsequently, promising ABA-mimics were analyzed in vitro for ligand-receptor interaction complemented by physiological analyses. Several CCPs activated ABA signaling in yeast and plant cells. CCP1, CCP2, and CCP5 were by an order of magnitude more efficient than ABA in minimizing transpiration of Arabidopsis plants. In a progressive drought experiment, CCP2 mediated an increase in water use efficiency superior to ABA without trade-offs in biomass accumulation.
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Affiliation(s)
- Jan Roeder
- Department of Botany, Technical University of Munich, Freising, Germany
| | - Jinghui Liu
- Department of Botany, Technical University of Munich, Freising, Germany
| | - Isabel Doch
- Department of Botany, Technical University of Munich, Freising, Germany
| | - Moritz Ruschhaupt
- Department of Botany, Technical University of Munich, Freising, Germany
| | | | - Erwin Grill
- Department of Botany, Technical University of Munich, Freising, Germany
| | - Hendrik Helmke
- Research and Development, Weed Control Research, Division Crop Science, Bayer AG, Frankfurt am Main, Germany
| | - Sabine Hohmann
- Research and Development, Weed Control Research, Division Crop Science, Bayer AG, Frankfurt am Main, Germany
| | - Stefan Lehr
- Research and Development, Weed Control Research, Division Crop Science, Bayer AG, Frankfurt am Main, Germany
| | - Jens Frackenpohl
- Research and Development, Weed Control Research, Division Crop Science, Bayer AG, Frankfurt am Main, Germany
| | - Zhenyu Yang
- Department of Botany, Technical University of Munich, Freising, Germany
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21
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Steiner PJ, Swift SD, Bedewitz M, Wheeldon I, Cutler SR, Nusinow DA, Whitehead TA. A Closed Form Model for Molecular Ratchet-Type Chemically Induced Dimerization Modules. Biochemistry 2023; 62:281-291. [PMID: 35675717 DOI: 10.1021/acs.biochem.2c00172] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Chemical-induced dimerization (CID) modules enable users to implement ligand-controlled cellular and biochemical functions for a number of problems in basic and applied biology. A special class of CID modules occur naturally in plants and involve a hormone receptor that binds a hormone, triggering a conformational change in the receptor that enables recognition by a second binding protein. Two recent reports show that such hormone receptors can be engineered to sense dozens of structurally diverse compounds. As a closed form model for molecular ratchets would be of immense utility in forward engineering of biological systems, here we have developed a closed form model for these distinct CID modules. These modules, which we call molecular ratchets, are distinct from more common CID modules called molecular glues in that they engage in saturable binding kinetics and are characterized well by a Hill equation. A defining characteristic of molecular ratchets is that the sensitivity of the response can be tuned by increasing the molar ratio of the hormone receptor to the binding protein. Thus, the same molecular ratchet can have a pico- or micromolar EC50 depending on the concentration of the different receptor and binding proteins. Closed form models are derived for a base elementary reaction rate model, for ligand-independent complexation of the receptor and binding protein, and for homodimerization of the hormone receptor. Useful governing equations for a variety of in vitro and in vivo applications are derived, including enzyme-linked immunosorbent assay-like microplate assays, transcriptional activation in prokaryotes and eukaryotes, and ligand-induced split protein complementation.
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Affiliation(s)
- Paul J Steiner
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Samuel D Swift
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Matthew Bedewitz
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
| | - Ian Wheeldon
- Institute for Integrative Genome Biology, University of California Riverside, Riverside, California 92521, United States.,Department of Chemical and Environmental Engineering, University of California Riverside, Riverside, California 92521, United States
| | - Sean R Cutler
- Institute for Integrative Genome Biology, University of California Riverside, Riverside, California 92521, United States.,Department of Botany and Plant Sciences, University of California Riverside, Riverside, California 92521, United States.,Center for Plant Cell Biology, University of California Riverside, Riverside, California 92521, United States
| | - Dmitri A Nusinow
- Donald Danforth Plant Science Center, St. Louis, Missouri 63132, United States
| | - Timothy A Whitehead
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80305, United States
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22
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Michaud O, Krahmer J, Galbier F, Lagier M, Galvão VC, Ince YÇ, Trevisan M, Knerova J, Dickinson P, Hibberd JM, Zeeman SC, Fankhauser C. Abscisic acid modulates neighbor proximity-induced leaf hyponasty in Arabidopsis. PLANT PHYSIOLOGY 2023; 191:542-557. [PMID: 36135791 PMCID: PMC9806605 DOI: 10.1093/plphys/kiac447] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 09/08/2022] [Indexed: 05/27/2023]
Abstract
Leaves of shade-avoiding plants such as Arabidopsis (Arabidopsis thaliana) change their growth pattern and position in response to low red to far-red ratios (LRFRs) encountered in dense plant communities. Under LRFR, transcription factors of the phytochrome-interacting factor (PIF) family are derepressed. PIFs induce auxin production, which is required for promoting leaf hyponasty, thereby favoring access to unfiltered sunlight. Abscisic acid (ABA) has also been implicated in the control of leaf hyponasty, with gene expression patterns suggesting that LRFR regulates the ABA response. Here, we show that LRFR leads to a rapid increase in ABA levels in leaves. Changes in ABA levels depend on PIFs, which regulate the expression of genes encoding isoforms of the enzyme catalyzing a rate-limiting step in ABA biosynthesis. Interestingly, ABA biosynthesis and signaling mutants have more erect leaves than wild-type Arabidopsis under white light but respond less to LRFR. Consistent with this, ABA application decreases leaf angle under white light; however, this response is inhibited under LRFR. Tissue-specific interference with ABA signaling indicates that an ABA response is required in different cell types for LRFR-induced hyponasty. Collectively, our data indicate that LRFR triggers rapid PIF-mediated ABA production. ABA plays a different role in controlling hyponasty under white light than under LRFR. Moreover, ABA exerts its activity in multiple cell types to control leaf position.
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Affiliation(s)
| | - Johanna Krahmer
- Faculty of Biology and Medicine, Centre for Integrative Genomics, University of Lausanne, Génopode Building, Lausanne CH-1015, Switzerland
| | - Florian Galbier
- Plant Biochemistry, Department of Biology, ETH Zürich, Universität-Str. 2, CH-8092 Zürich, Switzerland
| | | | | | | | - Martine Trevisan
- Faculty of Biology and Medicine, Centre for Integrative Genomics, University of Lausanne, Génopode Building, Lausanne CH-1015, Switzerland
| | - Jana Knerova
- Department of Plant Sciences, Downing Street, Cambridge, University of Cambridge, CB2 3EA, UK
| | - Patrick Dickinson
- Department of Plant Sciences, Downing Street, Cambridge, University of Cambridge, CB2 3EA, UK
| | - Julian M Hibberd
- Department of Plant Sciences, Downing Street, Cambridge, University of Cambridge, CB2 3EA, UK
| | - Samuel C Zeeman
- Plant Biochemistry, Department of Biology, ETH Zürich, Universität-Str. 2, CH-8092 Zürich, Switzerland
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23
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Bowerman AF, Byrt CS, Roy SJ, Whitney SM, Mortimer JC, Ankeny RA, Gilliham M, Zhang D, Millar AA, Rebetzke GJ, Pogson BJ. Potential abiotic stress targets for modern genetic manipulation. THE PLANT CELL 2023; 35:139-161. [PMID: 36377770 PMCID: PMC9806601 DOI: 10.1093/plcell/koac327] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 11/03/2022] [Indexed: 05/06/2023]
Abstract
Research into crop yield and resilience has underpinned global food security, evident in yields tripling in the past 5 decades. The challenges that global agriculture now faces are not just to feed 10+ billion people within a generation, but to do so under a harsher, more variable, and less predictable climate, and in many cases with less water, more expensive inputs, and declining soil quality. The challenges of climate change are not simply to breed for a "hotter drier climate," but to enable resilience to floods and droughts and frosts and heat waves, possibly even within a single growing season. How well we prepare for the coming decades of climate variability will depend on our ability to modify current practices, innovate with novel breeding methods, and communicate and work with farming communities to ensure viability and profitability. Here we define how future climates will impact farming systems and growing seasons, thereby identifying the traits and practices needed and including exemplars being implemented and developed. Critically, this review will also consider societal perspectives and public engagement about emerging technologies for climate resilience, with participatory approaches presented as the best approach.
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Affiliation(s)
- Andrew F Bowerman
- ARC Training Centre for Accelerated Future Crops Development, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Caitlin S Byrt
- ARC Training Centre for Accelerated Future Crops Development, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Stuart John Roy
- ARC Training Centre for Accelerated Future Crops Development, University of Adelaide, South Australia, Australia
- School of Agriculture, Food and Wine & Waite Research Institute, University of Adelaide, Glen Osmond, South Australia, Australia
| | - Spencer M Whitney
- ARC Training Centre for Accelerated Future Crops Development, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Jenny C Mortimer
- ARC Training Centre for Accelerated Future Crops Development, University of Adelaide, South Australia, Australia
- School of Agriculture, Food and Wine & Waite Research Institute, University of Adelaide, Glen Osmond, South Australia, Australia
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Rachel A Ankeny
- ARC Training Centre for Accelerated Future Crops Development, University of Adelaide, South Australia, Australia
- School of Humanities, University of Adelaide, North Terrace, South Australia, Australia
| | - Matthew Gilliham
- ARC Training Centre for Accelerated Future Crops Development, University of Adelaide, South Australia, Australia
- School of Agriculture, Food and Wine & Waite Research Institute, University of Adelaide, Glen Osmond, South Australia, Australia
| | - Dabing Zhang
- ARC Training Centre for Accelerated Future Crops Development, University of Adelaide, South Australia, Australia
- School of Agriculture, Food and Wine & Waite Research Institute, University of Adelaide, Glen Osmond, South Australia, Australia
| | - Anthony A Millar
- ARC Training Centre for Accelerated Future Crops Development, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Greg J Rebetzke
- CSIRO Agriculture & Food, Canberra, Australian Capital Territory, Australia
| | - Barry J Pogson
- ARC Training Centre for Accelerated Future Crops Development, The Australian National University, Canberra, Australian Capital Territory, Australia
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24
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Wong A, Bi C, Chi W, Hu N, Gehring C. Amino acid motifs for the identification of novel protein interactants. Comput Struct Biotechnol J 2022; 21:326-334. [PMID: 36582434 PMCID: PMC9791077 DOI: 10.1016/j.csbj.2022.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/06/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
Biological systems consist of multiple components of different physical and chemical properties that require complex and dynamic regulatory loops to function efficiently. The discovery of ever more novel interacting sites in complex proteins suggests that we are only beginning to understand how cellular and biological functions are integrated and tuned at the molecular and systems levels. Here we review recently discovered interacting sites which have been identified through rationally designed amino acid motifs diagnostic for specific molecular functions, including enzymatic activities and ligand-binding properties. We specifically discuss the nature of the latter using as examples, novel hormone recognition and gas sensing sites that occur in moonlighting protein complexes. Drawing evidence from the current literature, we discuss the potential implications at the cellular, tissue, and/or organismal levels of such non-catalytic interacting sites and provide several promising avenues for the expansion of amino acid motif searches to discover hitherto unknown protein interactants and interaction networks. We believe this knowledge will unearth unexpected functions in both new and well-characterized proteins, thus filling existing conceptual gaps or opening new avenues for applications either as drug targets or tools in pharmacology, cell biology and bio-catalysis. Beyond this, motif searches may also support the design of novel, effective and sustainable approaches to crop improvements and the development of new therapeutics.
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Affiliation(s)
- Aloysius Wong
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, Zhejiang Province 325060, China,Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, Ouhai, Wenzhou, Zhejiang Province 325060, China,Zhejiang Bioinformatics International Science and Technology Cooperation Center, Ouhai, Wenzhou, Zhejiang Province 325060, China
| | - Chuyun Bi
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, Zhejiang Province 325060, China,Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, Ouhai, Wenzhou, Zhejiang Province 325060, China,Zhejiang Bioinformatics International Science and Technology Cooperation Center, Ouhai, Wenzhou, Zhejiang Province 325060, China
| | - Wei Chi
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, Zhejiang Province 325060, China
| | - Ningxin Hu
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, Zhejiang Province 325060, China
| | - Chris Gehring
- Department of Chemistry, Biology & Biotechnology, University of Perugia, Perugia 06121, Italy,Corresponding author.
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25
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CRISPR/Cas9 Gene Editing of NtAITRs, a Family of Transcription Repressor Genes, Leads to Enhanced Drought Tolerance in Tobacco. Int J Mol Sci 2022; 23:ijms232315268. [PMID: 36499605 PMCID: PMC9737578 DOI: 10.3390/ijms232315268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/29/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Tobacco is a cash crop throughout the world, and its growth and development are affected by abiotic stresses including drought stress; therefore, drought-tolerant breeding may help to improve tobacco yield and quality under drought stress conditions. Considering that the plant hormone ABA (abscisic acid) is able to regulate plant responses to abiotic stresses via activating ABA response genes, the characterization of ABA response genes may enable the identification of genes that can be used for molecular breeding to improve drought tolerance in tobacco. We report here the identification of NtAITRs (Nicotiana tabacum ABA-induced transcription repressors) as a family of novel regulators of drought tolerance in tobacco. Bioinformatics analysis shows that there are a total of eight NtAITR genes in tobacco, and all the NtAITRs have a partially conserved LxLxL motif at their C-terminus. RT-PCR results show that the expression levels of at least some NtAITRs were increased in response to ABA and drought treatments, and NtAITRs, when recruited to the Gal4 promoter via a fused GD (Gal4 DNA-binding domain), were able to repress transcription activator LD-VP activated expression of the LexA-Gal4-GUS reporter gene. Roles of NtAITRs in regulating drought tolerance in tobacco were analyzed by generating CRISPR/Cas9 gene-edited mutants. A total of three Cas9-free ntaitr12356 quintuple mutants were obtained, and drought treatment assays show that drought tolerance was increased in the ntaitr12356 quintuple mutants. On the other hand, results of seed germination and seedling greening assays show that ABA sensitivity was increased in the ntaitr12356 quintuple mutants, and the expression levels of some ABA signaling key regulator genes were altered in the ntaitr12356-c3 mutant. Taken together, our results suggest that NtAITRs are ABA-responsive genes, and that NtAITRs function as transcription repressors and negatively regulate drought tolerance in tobacco, possibly by affecting plant ABA response via affecting the expression of ABA signaling key regulator genes.
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26
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Plant hormone sensors as scaffolds for biosensor design. Nat Biotechnol 2022; 40:1772-1773. [PMID: 35726093 DOI: 10.1038/s41587-022-01373-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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27
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Leonard AC, Whitehead TA. Design and engineering of genetically encoded protein biosensors for small molecules. Curr Opin Biotechnol 2022; 78:102787. [PMID: 36058141 DOI: 10.1016/j.copbio.2022.102787] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/27/2022] [Accepted: 08/02/2022] [Indexed: 12/14/2022]
Abstract
Genetically encoded protein biosensors controlled by small organic molecules are valuable tools for many biotechnology applications, including control of cellular decisions in living cells. Here, we review recent advances in protein biosensor design and engineering for binding to novel ligands. We categorize sensor architecture as either integrated or portable, where portable biosensors uncouple molecular recognition from signal transduction. Proposed advances to improve portable biosensor development include standardizing a limited set of protein scaffolds, and automating ligand-compatibility screening and ligand-protein-interface design.
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Affiliation(s)
- Alison C Leonard
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80305, USA
| | - Timothy A Whitehead
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80305, USA.
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28
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Beltrán J, Steiner PJ, Bedewitz M, Wei S, Peterson FC, Li Z, Hughes BE, Hartley Z, Robertson NR, Medina-Cucurella AV, Baumer ZT, Leonard AC, Park SY, Volkman BF, Nusinow DA, Zhong W, Wheeldon I, Cutler SR, Whitehead TA. Rapid biosensor development using plant hormone receptors as reprogrammable scaffolds. Nat Biotechnol 2022; 40:1855-1861. [PMID: 35726092 PMCID: PMC9750858 DOI: 10.1038/s41587-022-01364-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 05/17/2022] [Indexed: 01/14/2023]
Abstract
A general method to generate biosensors for user-defined molecules could provide detection tools for a wide range of biological applications. Here, we describe an approach for the rapid engineering of biosensors using PYR1 (Pyrabactin Resistance 1), a plant abscisic acid (ABA) receptor with a malleable ligand-binding pocket and a requirement for ligand-induced heterodimerization, which facilitates the construction of sense-response functions. We applied this platform to evolve 21 sensors with nanomolar to micromolar sensitivities for a range of small molecules, including structurally diverse natural and synthetic cannabinoids and several organophosphates. X-ray crystallography analysis revealed the mechanistic basis for new ligand recognition by an evolved cannabinoid receptor. We demonstrate that PYR1-derived receptors are readily ported to various ligand-responsive outputs, including enzyme-linked immunosorbent assay (ELISA)-like assays, luminescence by protein-fragment complementation and transcriptional circuits, all with picomolar to nanomolar sensitivity. PYR1 provides a scaffold for rapidly evolving new biosensors for diverse sense-response applications.
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Affiliation(s)
- Jesús Beltrán
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
| | - Paul J Steiner
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Matthew Bedewitz
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Shuang Wei
- Department of Biochemistry, University of California, Riverside, Riverside, CA, USA
| | - Francis C Peterson
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Zongbo Li
- Department of Chemistry, University of California, Riverside, Riverside, CA, USA
| | - Brigid E Hughes
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Zachary Hartley
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA
| | - Nicholas R Robertson
- Department of Bioengineering, University of California, Riverside, Riverside, USA
| | | | - Zachary T Baumer
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Alison C Leonard
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Sang-Youl Park
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | - Brian F Volkman
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Wenwan Zhong
- Department of Chemistry, University of California, Riverside, Riverside, CA, USA
| | - Ian Wheeldon
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA.
- Department of Chemical and Environmental Engineering, University of California, Riverside, Riverside, CA, USA.
| | - Sean R Cutler
- Department of Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA.
- Institute for Integrative Genome Biology, University of California, Riverside, Riverside, CA, USA.
- Center for Plant Cell Biology, University of California, Riverside, Riverside, CA, USA.
| | - Timothy A Whitehead
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA.
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29
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Yang L, Zhang P, Wang Y, Hu G, Guo W, Gu X, Pu L. Plant synthetic epigenomic engineering for crop improvement. SCIENCE CHINA. LIFE SCIENCES 2022; 65:2191-2204. [PMID: 35851940 DOI: 10.1007/s11427-021-2131-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Efforts have been directed to redesign crops with increased yield, stress adaptability, and nutritional value through synthetic biology-the application of engineering principles to biology. A recent expansion in our understanding of how epigenetic mechanisms regulate plant development and stress responses has unveiled a new set of resources that can be harnessed to develop improved crops, thus heralding the promise of "synthetic epigenetics." In this review, we summarize the latest advances in epigenetic regulation and highlight how innovative sequencing techniques, epigenetic editing, and deep learning-driven predictive tools can rapidly extend these insights. We also proposed the future directions of synthetic epigenetics for the development of engineered smart crops that can actively monitor and respond to internal and external cues throughout their life cycles.
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Affiliation(s)
- Liwen Yang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Pingxian Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yifan Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Guihua Hu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Weijun Guo
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xiaofeng Gu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Li Pu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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30
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Sun T, Zhang J, Zhang Q, Li X, Li M, Yang Y, Zhou J, Wei Q, Zhou B. Exogenous application of acetic acid enhances drought tolerance by influencing the MAPK signaling pathway induced by ABA and JA in apple plants. TREE PHYSIOLOGY 2022; 42:1827-1840. [PMID: 35323984 DOI: 10.1093/treephys/tpac034] [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: 01/17/2022] [Accepted: 03/13/2022] [Indexed: 06/14/2023]
Abstract
The external application of acetic acid (AA) has been shown to improve drought survival in plants, such as Arabidopsis, rice, maize, wheat, rapeseed and cassava, and the application of AA also increased drought tolerance in perennial woody apple (Malus domestica) plants. An understanding of AA-induced drought tolerance in apple plants at the molecular level will contribute to the development of technology that can be used to enhance drought tolerance. In this study, the morphological, physiological and transcriptomic responses to drought stress were analyzed in apple plants after watering without AA (CK), watering with AA (AA), drought treatment (D) and drought treatment with AA (DA). The results suggested that the AA-treated apple plants had a higher tolerance to drought than water-treated plants. Higher levels of chlorophyll and carotenoids were found under the DA conditions than under D stress. The levels of abscisic acid (ABA), jasmonic acid (JA) and methyl jasmonate were increased in AA-treated apple plants. Transcriptomic profiling indicated the key biological pathways involved in metabolic processes, mitogen-activated protein kinase (MAPK) signaling, plant hormone signal transduction and the biosynthesis of secondary metabolites in response to different drought conditions. The 9-cis-epoxycarotenoid dioxygenase, (9S,13S)-cis-oxophytodienoic acid reductase, allene oxide synthase, allene oxide cyclase and lipoxygenase genes participate in the synthase of ABA and JA under drought and AA treatments. Collectively, the results showed that external application of AA enhanced drought tolerance in apple plants by influencing the ABA- and JA-induced MAPK signaling pathways. These data indicated that the application of AA in plants is beneficial for enhancing drought tolerance and decreasing growth inhibition in agricultural fields.
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Affiliation(s)
- Tingting Sun
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Academy of Forestry and Pomology Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing 100093, China
| | - Junke Zhang
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Academy of Forestry and Pomology Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing 100093, China
| | - Qiang Zhang
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Academy of Forestry and Pomology Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing 100093, China
| | - Xingliang Li
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Academy of Forestry and Pomology Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing 100093, China
| | - Minji Li
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Academy of Forestry and Pomology Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing 100093, China
| | - Yuzhang Yang
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Academy of Forestry and Pomology Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing 100093, China
| | - Jia Zhou
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Academy of Forestry and Pomology Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing 100093, China
| | - Qinping Wei
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Academy of Forestry and Pomology Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing 100093, China
| | - Beibei Zhou
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Academy of Forestry and Pomology Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, Beijing 100093, China
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Wang Y, Li Y, Tian H, Wang W, Wang X, Hussain S, Yuan Y, Lin R, Hussain H, Wang T, Wang S. AtS40-1, a group I DUF584 protein positively regulates ABA response and salt tolerance in Arabidopsis. Gene 2022; 846:146846. [PMID: 36044943 DOI: 10.1016/j.gene.2022.146846] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 08/06/2022] [Accepted: 08/25/2022] [Indexed: 11/18/2022]
Abstract
Abiotic stresses such as salt and drought affect plants growth and development, whereas the plant hormone ABA is able to regulate plant responses to abiotic stresses by regulating downstream gene expression. Therefore characterization of unknown function ABA responsive genes is able to identify novel regulators of plant abiotic stress responses. We report here the characterization of AtS40-1, a Group I DUF584 protein in the regulation of ABA and salt responses in Arabidopsis. RT-PCR results show that the expression of AtS40-1 was dramatically induced by ABA, but only slightly increase, if any, was observed for other three Group I DUF584 genes including AtS40-1L, AtS40-2 and AtS40-3. Transfection assays in Arabidopsis protoplasts show that all the four Group I DUF584 proteins were predominately localized in nucleus and were able to repress the expression of the co-transfected reporter gene. The roles of AtS40-1 in regulating plant response to ABA and abiotic stress responses were analyzed, by using transgenic plants and inactivation mutants. The results show that the ABA responses were increased in the 35S:AtS40-1 transgenic plants, but decreased in the ats40-1 mutants. Similar to AtS40-1, the results indicate that AtS40-1L, the most closely related DUF584 protein to AtS40-1, positively regulates ABA responses in Arabidopsis. However, further decreased ABA responses were not observed in the ats40-1 ats40-1l double mutants. On the other hand, salt tolerance was increased in the transgenic plants overexpressing AtS40-1 or AtS40-1L, but decreased in the ats40-1 and ats40-1l mutants. Quantitative RT-PCR results show that the ABA induced expression of the ABA signaling regulator genes ABI3, ABI4 and ABA responsive gene RAB18 was decreased, where as ABA signaling gene ABI1 was increased in the ats40-1 mutants. These results suggest that AtS40-1 regulates ABA and salt responses in Arabidopsis, possibly by affecting ABA induced expression of some ABA signaling regulator genes.
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Affiliation(s)
- Yating Wang
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, Changchun 130024 China
| | - Yingying Li
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, Changchun 130024 China
| | - Hainan Tian
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, Changchun 130024 China
| | - Wei Wang
- Laboratory of Plant Molecular Genetics & Crop Gene Editing, School of Life Sciences, Linyi University, Linyi 276000, China
| | - Xutong Wang
- Laboratory of Plant Molecular Genetics & Crop Gene Editing, School of Life Sciences, Linyi University, Linyi 276000, China
| | - Saddam Hussain
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, Changchun 130024 China
| | - Yuan Yuan
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, Changchun 130024 China
| | - Rao Lin
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, Changchun 130024 China
| | - Hadia Hussain
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, Changchun 130024 China
| | - Tianya Wang
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, Changchun 130024 China
| | - Shucai Wang
- Key Laboratory of Molecular Epigenetics of MOE, Northeast Normal University, Changchun 130024 China; Laboratory of Plant Molecular Genetics & Crop Gene Editing, School of Life Sciences, Linyi University, Linyi 276000, China.
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32
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AtEAU1 and AtEAU2, Two EAR Motif-Containing ABA Up-Regulated Novel Transcription Repressors Regulate ABA Response in Arabidopsis. Int J Mol Sci 2022; 23:ijms23169053. [PMID: 36012319 PMCID: PMC9409118 DOI: 10.3390/ijms23169053] [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: 06/28/2022] [Revised: 07/26/2022] [Accepted: 08/08/2022] [Indexed: 12/04/2022] Open
Abstract
EAR (Ethylene-responsive element binding factor-associated Amphiphilic Repression) motif-containing transcription repressors have been shown to regulate plant growth and development, and plant responses to plant hormones and environmental stresses including biotic and abiotic stresses. However, the functions of most EAR-motif-containing proteins remain largely uncharacterized. The plant hormone abscisic acid (ABA) also plays important roles in regulating plant responses to abiotic stresses via activation/repression of ABA-responsive genes. We report here the identification and functional characterization of two ABA-responsive EAR motif-containing protein genes, AtEAU1 (Arabidopsis thaliana EAR motif-containing ABAUp-regulated 1) and AtEAU2. Quantitative RT-PCR results show that the expressions of AtEAU1 and AtEAU2 were increased by ABA treatment, and were decreased in the ABA biosynthesis mutant aba1-5. Assays in transfected Arabidopsis protoplasts show that both AtEAU1 and AtEAU2 were specifically localized in the nucleus, and when recruited to the promoter region of the reporter gene by a fused DNA binding domain, repressed reporter gene expression. By using T-DNA insertion mutants and a gene-edited transgene-free mutant generated by CRISPR/Cas9 gene editing, we performed ABA sensitivity assays, and found that ABA sensitivity in the both ateau1 and ateau2 single mutants was increased in seedling greening assays. ABA sensitivity in the ateau1 ateau2 double mutants was also increased, but was largely similar to the ateau1 single mutants. On the other hand, all the mutants showed a wild type response to ABA in root elongation assays. Quantitative RT-PCR results show that the expression level of PYL4, an ABA receptor gene was increased, whereas that of ABI2, a PP2C gene was decreased in the ateau1 and ateau1 single, and the ateau1 ateau2 double mutants. In summary, our results suggest that AtEAU1 and AtEAU2 are ABA-response genes, and AtEAU1 and AtEAU2 are novel EAR motif-containing transcription repressors that negatively regulate ABA responses in Arabidopsis, likely by regulating the expression of some ABA signaling key regulator genes.
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Zimran G, Feuer E, Pri-Tal O, Shpilman M, Mosquna A. Directed Evolution of Herbicide Biosensors in a Fluorescence-Activated Cell-Sorting-Compatible Yeast Two-Hybrid Platform. ACS Synth Biol 2022; 11:2880-2888. [PMID: 35922400 PMCID: PMC9396700 DOI: 10.1021/acssynbio.2c00297] [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] [Indexed: 11/27/2022]
Abstract
![]()
Developing sensory modules for specific molecules of
interest represents
a fundamental challenge in synthetic biology and its applications.
A somewhat generalizable approach for this challenge is demonstrated
here by evolving a naturally occurring chemically induced heterodimer
into a genetically encoded sensor for herbicides. The interaction
between PYRABACTIN-RESISTANT-like receptors and type-2C protein phosphatases
is induced by abscisic acid—a small-molecule hormone in plants.
We considered abscisic acid receptors as a potential scaffold for
the development of biosensors because of past successes in their engineering,
a structurally defined ligand cavity and the availability of large-scale
assays for their activation. A panel of 475 receptor variants, mutated
at ligand-proximal residues, was screened for activation by 37 herbicides
from several classes. Twelve compounds activated at least one member
of the mutant panel. To facilitate the subsequent improvement of herbicide
receptors through directed evolution, we engineered a yeast two-hybrid
platform optimized for sequential positive and negative selection
using fluorescence-activated cell sorting. By utilizing this system,
we were able to isolate receptors with low nanomolar sensitivity and
a broad dynamic range in sensing a ubiquitous group of chloroacetamide
herbicides. Aside from its possible applicative value, this work lays
down conceptual groundwork and provides infrastructure for the future
development of biosensors through directed evolution.
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Affiliation(s)
- Gil Zimran
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610000, Israel
| | - Erez Feuer
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610000, Israel
| | - Oded Pri-Tal
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610000, Israel
| | - Michal Shpilman
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610000, Israel
| | - Assaf Mosquna
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610000, Israel
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Liu Y, Chen S, Wei P, Guo S, Wu J. A briefly overview of the research progress for the abscisic acid analogues. Front Chem 2022; 10:967404. [PMID: 35936098 PMCID: PMC9355028 DOI: 10.3389/fchem.2022.967404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Abscisic acid (ABA) is an important plant endogenous hormone that participates in the regulation of various physiological processes in plants, including the occurrence and development of somatic embryos, seeddevelopment and dormancy. ABA is called “plant stress resistance factor”, while with the limitation of the rapid metabolic inactivation and photoisomerization inactivation of ABA for its large-scale use. Understanding the function and role of ABA in plants is of great significance to promote its application. For decades, scientists have conducted in-depth research on its mechanism of action and signaling pathways, a series of progress were achieved, and hundreds of ABA analogues (similar in structure or function) have been synthesized to develop highly active plant growth regulators and tools to elucidate ABA perception. In this review, we summarize a variety of ABA analogues, especially the ABA receptor analogues, and explore the mechanisms of ABA action and catabolism, which will facilitate the development of novel ABA analogues with high biological activities.
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Wu M, Yin C, Jiang X, Sun Q, Xu X, Ma Y, Liu X, Niu N, Chen L. Biocompatible Abscisic Acid-Sensing Supramolecular Hybridization Probe for Spatiotemporal Fluorescence Imaging in Plant Tissues. Anal Chem 2022; 94:8999-9008. [PMID: 35707963 DOI: 10.1021/acs.analchem.2c01050] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Achieving detection of the phytohormone abscisic acid (ABA) is of critical importance for understanding plant growth and development. We report a hybrid supramolecular fluorescent probe that uses bovine serum albumin (BSA) as a host. Aggregation-induced emission of fluorescent chromophores (AIEgens) enables luminescence in the presence of BSA. ABA and its aptamer act as a switch to trigger this fluorescent system, the strategy that exhibits high sensitivity to abscisic acid with a detection limit of 0.098 nM. The probe test strip also enables visualization of ABA content from plants by colorimetric observation with the naked eye. In particular, the high biocompatibility and small molecular size of the prepared fluorescent probe allow for effective monitoring of ABA in plant tissues by fluorescence imaging. This strategy provides a new perspective to achieve the detection of endogenous and exogenous ABA in plants and has important implications for plant biology research.
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Affiliation(s)
- Meng Wu
- College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Chenhui Yin
- College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Xinxin Jiang
- College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Qijun Sun
- College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Xiaoyu Xu
- College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Yanmei Ma
- College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Xinjian Liu
- College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Na Niu
- College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Ligang Chen
- College of Chemistry, Chemical Engineering and Resource Utilization, Key Laboratory of Forest Plant Ecology, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
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36
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Yuan Y, Miao J. Agrochemical control of gene expression using evolved split RNA polymerase. PeerJ 2022; 10:e13619. [PMID: 35729907 PMCID: PMC9206840 DOI: 10.7717/peerj.13619] [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: 02/17/2022] [Accepted: 06/02/2022] [Indexed: 01/22/2023] Open
Abstract
Chemically-inducible gene expression systems are valuable tools for rational control of gene expression both for basic research and biotechnology. However, most chemical inducers are confined to certain groups of organisms. Therefore, dissecting interactions between different organisms could be challenging using existing chemically-inducible systems. We engineered a mandipropamid-induced gene expression system (Mandi-T7) based on evolved split T7 RNAP system. As a proof-of-principle, we induced GFP expression in E. coli cells grown inside plant tissue.
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Affiliation(s)
- Yuan Yuan
- Department of Neurophysiology and Neuropharmacology, Institute of Special Environmental Medicine and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Jin Miao
- Duke Kunshan University, Kunshan, China
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The R2R3 MYB Transcription Factor MYB71 Regulates Abscisic Acid Response in Arabidopsis. PLANTS 2022; 11:plants11101369. [PMID: 35631794 PMCID: PMC9143609 DOI: 10.3390/plants11101369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/16/2022] [Accepted: 05/19/2022] [Indexed: 11/17/2022]
Abstract
Abscisic acid (ABA) regulates plant responses to abiotic stresses via regulating the expression of downstream genes, yet the functions of many ABA responsive genes remain unknown. We report here the characterization of MYB71, a R2R3 MYB transcription factor in regulating ABA responses in Arabidopsis. RT-PCR results show that the expression level of MYB71 was increased in response to ABA treatment. Arabidopsis protoplasts transfection results show that MYB71 was specifically localized in nucleus and it activated the Gal4:GUS reporter gene when recruited to the Gal4 promoter by a fused DNA binding domain GD. Roles of MYB71 in regulating plant response to ABA were analyzed by generating Arabidopsis transgenic plants overexpression MYB71 and gene edited mutants of MYB71. The results show that ABA sensitivity was increased in the transgenic plants overexpression MYB71, but decreased in the MYB71 mutants. By using a DEX inducible system, we further identified genes are likely regulated by MYB71, and found that they are enriched in biological process to environmental stimuli including abiotic stresses, suggesting that MYB71 may regulate plant response to abiotic stresses. Taken together, our results suggest that MYB71 is an ABA responsive gene, and MYB71 functions as a transcription activator and it positively regulates ABA response in Arabidopsis.
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38
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Mao H, Jian C, Cheng X, Chen B, Mei F, Li F, Zhang Y, Li S, Du L, Li T, Hao C, Wang X, Zhang X, Kang Z. The wheat ABA receptor gene TaPYL1-1B contributes to drought tolerance and grain yield by increasing water-use efficiency. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:846-861. [PMID: 34890091 PMCID: PMC9055818 DOI: 10.1111/pbi.13764] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 11/28/2021] [Accepted: 12/03/2021] [Indexed: 05/14/2023]
Abstract
The role of abscisic acid (ABA) receptors, PYR1/PYL/RCAR (PYLs), is well established in ABA signalling and plant drought response, but limited research has explored the regulation of wheat PYLs in this process, especially the effects of their allelic variations on drought tolerance or grain yield. Here, we found that the overexpression of a TaABFs-regulated PYL gene, TaPYL1-1B, exhibited higher ABA sensitivity, photosynthetic capacity and water-use efficiency (WUE), all contributed to higher drought tolerance than that of wild-type plants. This heightened water-saving mechanism further increased grain yield and protected productivity during water deficit. Candidate gene association analysis revealed that a favourable allele TaPYL1-1BIn-442 , carrying an MYB recognition site insertion in the promoter, is targeted by TaMYB70 and confers enhanced expression of TaPYL1-1B in drought-tolerant genotypes. More importantly, an increase in frequency of the TaPYL1-1BIn-442 allele over decades among modern Chinese cultivars and its association with high thousand-kernel weight together demonstrated that it was artificially selected during wheat improvement efforts. Taken together, our findings illuminate the role of TaPYL1-1B plays in coordinating drought tolerance and grain yield. In particular, the allelic variant TaPYL1-1BIn-442 substantially contributes to enhanced drought tolerance while maintaining high yield, and thus represents a valuable genetic target for engineering drought-tolerant wheat germplasm.
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Affiliation(s)
- Hude Mao
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi712100China
| | - Chao Jian
- Key Laboratory of Crop Gene Resources and Germplasm EnhancementMinistry of AgricultureInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
| | - Xinxiu Cheng
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi712100China
| | - Bin Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi712100China
| | - Fangming Mei
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi712100China
| | - Fangfang Li
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi712100China
| | - Yifang Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi712100China
| | - Shumin Li
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi712100China
| | - Linying Du
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life ScienceNorthwest A&F UniversityYanglingShaanxi712100China
| | - Tian Li
- Key Laboratory of Crop Gene Resources and Germplasm EnhancementMinistry of AgricultureInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
| | - Chenyang Hao
- Key Laboratory of Crop Gene Resources and Germplasm EnhancementMinistry of AgricultureInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
| | - Xiaojing Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life ScienceNorthwest A&F UniversityYanglingShaanxi712100China
| | - Xueyong Zhang
- Key Laboratory of Crop Gene Resources and Germplasm EnhancementMinistry of AgricultureInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing100081China
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi712100China
- Yangling Seed Industry Innovation CenterYanglingShaanxi712100China
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Vonapartis E, Mohamed D, Li J, Pan W, Wu J, Gazzarrini S. CBF4/DREB1D represses XERICO to attenuate ABA, osmotic and drought stress responses in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 110:961-977. [PMID: 35199890 DOI: 10.1111/tpj.15713] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 01/29/2022] [Accepted: 02/12/2022] [Indexed: 05/22/2023]
Abstract
Water stress can severely impact plant growth, productivity and yield. Consequently, plants have evolved various strategies through which they can respond and adapt to their environment. XERICO (XER) is a stress-responsive RING E3 ubiquitin ligase that modulates abscisic acid (ABA) levels and promotes drought tolerance when overexpressed. To better understand the biological role of XER in stress responses, we characterized a xer-1 hypomorphic mutant and a CRISPR/Cas9-induced xer-2 null mutant in Arabidopsis. Both xer mutant alleles exhibited increased drought sensitivity, supporting the results from overexpression studies. Furthermore, we discovered that both xer mutants have greater stomatal indices and that XER is expressed in epidermal cells, indicating that XER functions in the epidermis to repress stomatal development. To explore XER spatiotemporal and stress-dependent regulation, we conducted a yeast one-hybrid screen and found that CBF4/DREB1D associates with the XER 5' untranslated region (5'-UTR). We generated three cbf4 null mutants with CRISPR/Cas9 and showed that CBF4 negatively regulates ABA responses, promotes stomatal development and reduces drought tolerance, in contrast to the roles shown for XER. CBF4 is induced by ABA and osmotic stress, and localizes to the nucleus where it downregulates XER expression via the DRE element in its 5'-UTR. Lastly, genetic interaction studies confirmed that xer is epistatic to cbf4 in stomatal development and in ABA, osmotic and drought stress responses. We propose that the repression of XER by CBF4 functions to attenuate ABA signaling and stress responses to maintain a balance between plant growth and survival under adverse environmental conditions.
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Affiliation(s)
- Eliana Vonapartis
- Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada
- Department of Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, M5S 3B2, Canada
| | - Deka Mohamed
- Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada
- Department of Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, M5S 3B2, Canada
| | - Jingru Li
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Wenqiang Pan
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Jian Wu
- Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Sonia Gazzarrini
- Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada
- Department of Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, M5S 3B2, Canada
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40
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Shang Y, Yang D, Ha Y, Hur YS, Lee MM, Nam KH. Brassinosteroid-Insensitive 1-Associated Receptor Kinase 1 Modulates Abscisic Acid Signaling by Inducing PYR1 Monomerization and Association With ABI1 in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2022; 13:849467. [PMID: 35548282 PMCID: PMC9083366 DOI: 10.3389/fpls.2022.849467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 03/14/2022] [Indexed: 06/15/2023]
Abstract
Brassinosteroid-Insensitive 1-Associated Receptor Kinase 1 (BAK1) is a versatile kinase involved in many different plant developmental responses. Previously, we showed that BAK1 interacts with open stomata 1 (OST1), a cytoplasmic kinase, to promote abscisic acid (ABA)-induced stomatal closure. ABA is a plant hormone that primarily regulates stress responses and is recognized by the PYRABACTIN RESISTANCE1 (PYR1)/PYR1-LIKE (PYL)/REGULATORY COMPONENT OF ABA RECEPTORS (RCAR), which activates ABA signaling. Here, we demonstrated that BAK1 interacts with PYR1 and phosphorylates PYR1 in response to ABA in plants. We identified T137 and S142 of PYR1 as the phosphosites targeted by BAK1. Using phosphomimetic (PYR1DD) and phospho-dead (PYR1AA) PYR1 compared with wild-type PYR1, we showed that transgenic plants overexpressing a phosphomimetic PYR1 exhibited hypersensitivity to the inhibition of ABA-induced root growth and seed germination and increased ABA-induced stomatal closure and ABA-inducible gene expression. As underlying reasons for these phenomena, we further demonstrated that phosphorylated PYR1 existed in a monomeric form, in which ABA binding was increased, and the degree of complex formation with ABI1 was also increased. These results suggest that BAK1 positively modulates ABA signaling through interaction with PYR1, in addition to OST1.
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Affiliation(s)
- Yun Shang
- Department of Biological Sciences, Sookmyung Women’s University, Seoul, South Korea
- Research Institute of Women’s Health, Sookmyung Women’s University, Seoul, South Korea
| | - Dami Yang
- Department of Biological Sciences, Sookmyung Women’s University, Seoul, South Korea
| | - Yunmi Ha
- Department of Biological Sciences, Sookmyung Women’s University, Seoul, South Korea
| | - Yoon-Sun Hur
- Department of Systems Biology, Yonsei University, Seoul, South Korea
| | - Myeong Min Lee
- Department of Systems Biology, Yonsei University, Seoul, South Korea
| | - Kyoung Hee Nam
- Department of Biological Sciences, Sookmyung Women’s University, Seoul, South Korea
- Research Institute of Women’s Health, Sookmyung Women’s University, Seoul, South Korea
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Pa V, Vijayaraghavareddy P, Uttarkar A, Dawane A, D S, V A, Kc B, Niranjan V, Ms S, Cv A, Makarla U, Vemanna RS. Novel small molecules targeting bZIP23 TF improve stomatal conductance and photosynthesis under mild drought stress by regulating ABA. FEBS J 2022; 289:6058-6077. [PMID: 35445538 DOI: 10.1111/febs.16461] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 04/04/2022] [Accepted: 04/19/2022] [Indexed: 12/13/2022]
Abstract
Drought-induced abscisic acid (ABA) accumulation plays a key role in plant water relations by regulating stomatal movements. Although ABA helps in the survival of the plants, reduced carbon gain affects plant productivity. To improve crop productivity under mild drought stress conditions, it is necessary to manipulate ABA responses. Other research groups have used forward chemical genomics for the identification of ABA agonists and antagonists aiming to manipulate ABA biosynthesis and signalling. In the present study, we identified indolyl-ethyl amine and serotonin small molecules using a reverse chemical genomics approach, with these acting as potent inhibitors of ABA biosynthesis through transient regulation of bZIP23 transcription factor activity. In rice, wheat and soybean, each of the small molecules enhanced the germination of seeds, even in the presence of ABA. These molecules nullified the effect of ABA on intact and detached leaves, resulting in higher photosynthesis. Furthermore, these small molecules effectively reduced the transcription levels of bZIP23 targeting NCED4, PP2C49 and CO3 genes. Rice plants treated with the small molecules were found to have improved stomatal conductance, spikelet fertility and yield compared to untreated plants under mild drought stress conditions. Our results suggest that indolyl-ethyl amine and serotonin small molecules could be utilized to improve yield under mild drought conditions.
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Affiliation(s)
- Vanitha Pa
- Department of Crop Physiology, University of Agricultural Sciences, GKVK, Bengaluru, India.,Department of Biochemistry & Biotechnology, Annamalai University, Chidambaram, Tamil Nadu, India
| | | | - Akshay Uttarkar
- Department of Biotechnology, R.V. College of Engineering, Bengaluru, India
| | - Akashata Dawane
- Laboratory of Plant Functional Genomics, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad, Haryana, India
| | - Sujitha D
- Department of Crop Physiology, University of Agricultural Sciences, GKVK, Bengaluru, India
| | - Ashwin V
- Department of Crop Physiology, University of Agricultural Sciences, GKVK, Bengaluru, India
| | - Babitha Kc
- Laboratory of Plant Functional Genomics, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad, Haryana, India
| | - Vidya Niranjan
- Department of Biotechnology, R.V. College of Engineering, Bengaluru, India
| | - Sheshshayee Ms
- Department of Crop Physiology, University of Agricultural Sciences, GKVK, Bengaluru, India
| | - Anuradha Cv
- Department of Biochemistry & Biotechnology, Annamalai University, Chidambaram, Tamil Nadu, India
| | - Udayakumar Makarla
- Department of Crop Physiology, University of Agricultural Sciences, GKVK, Bengaluru, India
| | - Ramu S Vemanna
- Laboratory of Plant Functional Genomics, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad, Haryana, India
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42
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Lohani N, Singh MB, Bhalla PL. Biological Parts for Engineering Abiotic Stress Tolerance in Plants. BIODESIGN RESEARCH 2022; 2022:9819314. [PMID: 37850130 PMCID: PMC10521667 DOI: 10.34133/2022/9819314] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 12/17/2021] [Indexed: 10/19/2023] Open
Abstract
It is vital to ramp up crop production dramatically by 2050 due to the increasing global population and demand for food. However, with the climate change projections showing that droughts and heatwaves becoming common in much of the globe, there is a severe threat of a sharp decline in crop yields. Thus, developing crop varieties with inbuilt genetic tolerance to environmental stresses is urgently needed. Selective breeding based on genetic diversity is not keeping up with the growing demand for food and feed. However, the emergence of contemporary plant genetic engineering, genome-editing, and synthetic biology offer precise tools for developing crops that can sustain productivity under stress conditions. Here, we summarize the systems biology-level understanding of regulatory pathways involved in perception, signalling, and protective processes activated in response to unfavourable environmental conditions. The potential role of noncoding RNAs in the regulation of abiotic stress responses has also been highlighted. Further, examples of imparting abiotic stress tolerance by genetic engineering are discussed. Additionally, we provide perspectives on the rational design of abiotic stress tolerance through synthetic biology and list various bioparts that can be used to design synthetic gene circuits whose stress-protective functions can be switched on/off in response to environmental cues.
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Affiliation(s)
- Neeta Lohani
- Plant Molecular Biology and Biotechnology Laboratory, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Mohan B. Singh
- Plant Molecular Biology and Biotechnology Laboratory, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Prem L. Bhalla
- Plant Molecular Biology and Biotechnology Laboratory, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
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43
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Identification of stomatal-regulating molecules from de novo arylamine collection through aromatic C-H amination. Sci Rep 2022; 12:949. [PMID: 35042960 PMCID: PMC8766585 DOI: 10.1038/s41598-022-04947-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 01/04/2022] [Indexed: 11/08/2022] Open
Abstract
Stomata—small pores generally found on the leaves of plants—control gas exchange between plant and the atmosphere. Elucidating the mechanism that underlies such control through the regulation of stomatal opening/closing is important to understand how plants regulate photosynthesis and tolerate against drought. However, up-to-date, molecular components and their function involved in stomatal regulation are not fully understood. We challenged such problem through a chemical genetic approach by isolating and characterizing synthetic molecules that influence stomatal movement. Here, we describe that a small chemical collection, prepared during the development of C–H amination reactions, lead to the discovery of a Stomata Influencing Molecule (SIM); namely, a sulfonimidated oxazole that inhibits stomatal opening. The starting molecule SIM1 was initially isolated from screening of compounds that inhibit light induced opening of dayflower stomata. A range of SIM molecules were rapidly accessed using our state-of-the-art C–H amination technologies. This enabled an efficient structure–activity relationship (SAR) study, culminating in the discovery of a sulfonamidated oxazole derivative (SIM*) having higher activity and enhanced specificity against stomatal regulation. Biological assay results have shed some light on the mode of action of SIM molecules within the cell, which may ultimately lead to drought tolerance-conferring agrochemicals through the control of stomatal movement.
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44
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Mudziwapasi R, Mufandaedza J, Jomane FN, Songwe F, Ndudzo A, Nyamusamba RP, Takombwa AR, Mahla MG, Pullen J, Mlambo SS, Mahuni C, Mufandaedza E, Shoko R. Unlocking the potential of synthetic biology for improving livelihoods in sub-Saharan Africa. ALL LIFE 2022. [DOI: 10.1080/26895293.2021.2014986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Reagan Mudziwapasi
- Department of Crop and Soil Sciences, Faculty of Agricultural Sciences, Lupane State University, Lupane, Zimbabwe
| | | | - Fortune N. Jomane
- Department of Animal Science and Rangeland Management, Faculty of Agricultural Sciences, Lupane State University, Lupane, Zimbabwe
| | - Fanuel Songwe
- Department of Biosciences and Biotechnology, Faculty of Science and Technology, Midlands State University, Gweru, Zimbabwe
| | - Abigarl Ndudzo
- Department of Crop and Soil Sciences, Faculty of Agricultural Sciences, Lupane State University, Lupane, Zimbabwe
| | - Rutendo P. Nyamusamba
- Department of Crop and Soil Sciences, Faculty of Agricultural Sciences, Lupane State University, Lupane, Zimbabwe
| | | | - Melinda G. Mahla
- Department of Crop and Soil Sciences, Faculty of Agricultural Sciences, Lupane State University, Lupane, Zimbabwe
| | - Jessica Pullen
- Department of Crop and Soil Sciences, Faculty of Agricultural Sciences, Lupane State University, Lupane, Zimbabwe
| | - Sibonani S. Mlambo
- Department of Biotechnology, Faculty of Agriculture, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
| | | | - Edward Mufandaedza
- Department of Environmental Sciences, Faculty of Agricultural Sciences, Lupane State University, Lupane, Zimbabwe
| | - Ryman Shoko
- Department of Biology, Faculty of Agriculture, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
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45
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Zhao C, Shukla D. Molecular basis of the activation and dissociation of dimeric PYL2 receptor in abscisic acid signaling. Phys Chem Chem Phys 2022; 24:724-734. [PMID: 34935010 DOI: 10.1039/d1cp03307g] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phytohormone abscisic acid (ABA) is essential for plant responses to biotic and abiotic stresses. Dimeric receptors are a class of PYR1/PYL/RCAR (pyrabactin resistance 1/PYR1-like/regulatory component of ABA receptors) ABA receptors that are important for various ABA responses. While extensive experimental and computational studies have investigated these receptors, it remains not fully understood how ABA leads to their activation and dissociation for interaction with downstream protein phosphatase 2C (PP2C). Here, we study the activation and the homodimeric association processes of the PYL2 receptor as well as its heterodimeric association with protein phosphatase 2C 16 (HAB1) using molecular dynamics simulations. Free energy landscapes from ∼223 μs simulations show that dimerization substantially constrains PYL2 conformational plasticity and stabilizes the inactive state, resulting in lower ABA affinity. Also, we establish the thermodynamic model for competitive binding between homodimeric PYL2 association and heterodimeric PYL2-HAB1 association in the absence and presence of ABA. Our results suggest that the binding of ABA destabilizes the PYL2 complex and further stabilizes PYL2-HAB1 association, thereby promoting PYL2 dissociation. Overall, this study explains several key aspects on the activation of dimeric ABA receptors, which provide new avenues for selective regulation of these receptors.
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Affiliation(s)
- Chuankai Zhao
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Diwakar Shukla
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. .,Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.,Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.,National Center for Supercomputing Applications, Urbana, IL 61801, USA.,NIH Center for Macromolecular Modeling and Bioinformatics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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46
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Huang Z, Li Z, He B, Li W, Yang P, Chen L. Efficient Ultrasound-Assisted Approach to N-Benzensulfonyl Phenylacetamide via CuSO 4/NaAsc Catalysis in Water and Its Inhibition Activity of Seed Germination. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202201010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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47
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Ziegler MJ, Yserentant K, Dunsing V, Middel V, Gralak AJ, Pakari K, Bargstedt J, Kern C, Petrich A, Chiantia S, Strähle U, Herten DP, Wombacher R. Mandipropamid as a chemical inducer of proximity for in vivo applications. Nat Chem Biol 2022; 18:64-69. [PMID: 34934192 PMCID: PMC8709788 DOI: 10.1038/s41589-021-00922-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 10/13/2021] [Indexed: 11/26/2022]
Abstract
Direct control of protein interactions by chemically induced protein proximity holds great potential for both cell and synthetic biology as well as therapeutic applications. Low toxicity, orthogonality and excellent cell permeability are important criteria for chemical inducers of proximity (CIPs), in particular for in vivo applications. Here, we present the use of the agrochemical mandipropamid (Mandi) as a highly efficient CIP in cell culture systems and living organisms. Mandi specifically induces complex formation between a sixfold mutant of the plant hormone receptor pyrabactin resistance 1 (PYR1) and abscisic acid insensitive (ABI). It is orthogonal to other plant hormone-based CIPs and rapamycin-based CIP systems. We demonstrate the applicability of the Mandi system for rapid and efficient protein translocation in mammalian cells and zebrafish embryos, protein network shuttling and manipulation of endogenous proteins.
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Affiliation(s)
- Michael J Ziegler
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany
- Department of Chemical Biology, Max Planck Institute for Medical Research, Heidelberg, Germany
| | - Klaus Yserentant
- Institute of Physical Chemistry, Heidelberg University, Heidelberg, Germany
- Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
- Institute of Cardiovascular Sciences & School of Chemistry, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Valentin Dunsing
- Institute of Biology and Biochemistry, University of Potsdam, Potsdam, Germany
| | - Volker Middel
- Institute of Biological and Chemical Systems (IBCS)-Biological Information Processing (BIP), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
| | - Antoni J Gralak
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany
- Institute of Physical Chemistry, Heidelberg University, Heidelberg, Germany
| | - Kaisa Pakari
- Institute of Physical Chemistry, Heidelberg University, Heidelberg, Germany
| | - Jörn Bargstedt
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany
| | - Christoph Kern
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany
- Institute of Physical Chemistry, Heidelberg University, Heidelberg, Germany
| | - Annett Petrich
- Institute of Biology and Biochemistry, University of Potsdam, Potsdam, Germany
| | - Salvatore Chiantia
- Institute of Biology and Biochemistry, University of Potsdam, Potsdam, Germany
| | - Uwe Strähle
- Institute of Biological and Chemical Systems (IBCS)-Biological Information Processing (BIP), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
| | - Dirk-Peter Herten
- Institute of Physical Chemistry, Heidelberg University, Heidelberg, Germany
- Institute of Cardiovascular Sciences & School of Chemistry, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Centre of Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, Midlands, UK
| | - Richard Wombacher
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany.
- Department of Chemical Biology, Max Planck Institute for Medical Research, Heidelberg, Germany.
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48
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Lim CW, Baek W, Lee SC. Tobacco ubiquitin-specific protease 12 (NbUBP12) positively modulates drought resistance. PLANT SIGNALING & BEHAVIOR 2021; 16:1974725. [PMID: 34658295 PMCID: PMC9208778 DOI: 10.1080/15592324.2021.1974725] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 05/27/2023]
Abstract
Deubiquitination, a type of post-translational modification, cleaves ubiquitin from target proteins, thereby regulating their stability or activity. Deubiquitination enzymes, ubiquitin-specific proteases (UBP/USP), have been reported to be involved in numerous cellular processes in plants, including meristem development, circadian clock regulation, and immunity. In contrast to model plants, however, the functions of UBP in other higher plants remain poorly understood. Here, we isolated a deubiquitination enzyme, ubiquitin-specific protease 12 (NbUBP12), from Nicotiana benthamiana, which shows high sequence homology with the core enzyme regions of UBP12 from other plants. Quantitative reverse-transcription PCR analysis revealed that NbUBP12 gene expression was significantly induced after drought treatment, and its level was higher in seed than in other tissues. Using a virus-induced gene silencing technique, we generated NbUBP12-silenced tobacco plants to analyze NbUBP12 gene function in response to drought stress and found that compared with control plants, NbUBP12-silenced plants exhibited a lower survival rate after exposure to drought stress. In addition, they were characterized by lower leaf surface temperatures and larger stomatal pore size following abscisic acid (ABA) treatment. On the basis of these observations, we suggest that NbUBP12 is involved in modulating drought resistance in N. benthamiana, which is associated with ABA-mediated stomatal closure.
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Affiliation(s)
- Chae Woo Lim
- Department of Life Science (Bk21 Program), Chung-Ang University, SeoulSouth Korea
| | - Woonhee Baek
- Department of Life Science (Bk21 Program), Chung-Ang University, SeoulSouth Korea
| | - Sung Chul Lee
- Department of Life Science (Bk21 Program), Chung-Ang University, SeoulSouth Korea
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49
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Durán-Medina Y, Ruiz-Cortés BE, Guerrero-Largo H, Marsch-Martínez N. Specialized metabolism and development: An unexpected friendship. CURRENT OPINION IN PLANT BIOLOGY 2021; 64:102142. [PMID: 34856480 DOI: 10.1016/j.pbi.2021.102142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 10/12/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
Plants produce a myriad of metabolites. Some of them have been regarded for a long time as secondary or specialized metabolites and are considered to have functions mostly in defense and the adaptation of plants to their environment. However, in the last years, new research has shown that these metabolites can also have roles in the regulation of plant growth and development, some acting as signals, through the interaction with hormonal pathways, and some independently of them. These reports provide a glimpse of the functional possibilities that specialized metabolites present in the modulation of plant development and encourage more research in this direction.
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Affiliation(s)
- Yolanda Durán-Medina
- Biotecnology and Biochemistry Department, Centre for Research and Advanced Studies (CINVESTAV-IPN) Irapuato Unit, Mexico
| | - Beatriz Esperanza Ruiz-Cortés
- Biotecnology and Biochemistry Department, Centre for Research and Advanced Studies (CINVESTAV-IPN) Irapuato Unit, Mexico
| | - Herenia Guerrero-Largo
- Biotecnology and Biochemistry Department, Centre for Research and Advanced Studies (CINVESTAV-IPN) Irapuato Unit, Mexico
| | - Nayelli Marsch-Martínez
- Biotecnology and Biochemistry Department, Centre for Research and Advanced Studies (CINVESTAV-IPN) Irapuato Unit, Mexico.
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50
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Wu X, Sun T, Xu W, Sun Y, Wang B, Wang Y, Li Y, Wang J, Wu X, Lu Z, Xu P, Li G. Unraveling the Genetic Architecture of Two Complex, Stomata-Related Drought-Responsive Traits by High-Throughput Physiological Phenotyping and GWAS in Cowpea ( Vigna. Unguiculata L. Walp). Front Genet 2021; 12:743758. [PMID: 34777471 PMCID: PMC8581254 DOI: 10.3389/fgene.2021.743758] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 10/15/2021] [Indexed: 01/03/2023] Open
Abstract
Drought is one of the most devasting and frequent abiotic stresses in agriculture. While many morphological, biochemical and physiological indicators are being used to quantify plant drought responses, stomatal control, and hence the transpiration and photosynthesis regulation through it, is of particular importance in marking the plant capacity of balancing stress response and yield. Due to the difficulties in simultaneous, large-scale measurement of stomatal traits such as sensitivity and speed of stomatal closure under progressive soil drought, forward genetic mapping of these important behaviors has long been unavailable. The recent emerging phenomic technologies offer solutions to identify the water relations of whole plant and assay the stomatal regulation in a dynamic process at the population level. Here, we report high-throughput physiological phenotyping of water relations of 106 cowpea accessions under progressive drought stress, which, in combination of genome-wide association study (GWAS), enables genetic mapping of the complex, stomata-related drought responsive traits “critical soil water content” (θcri) and “slope of transpiration rate declining” (KTr). The 106 accessions showed large variations in θcri and KTr, indicating that they had broad spectrum of stomatal control in response to soil water deficit, which may confer them different levels of drought tolerance. Univariate GWAS identified six and fourteen significant SNPs associated with θcri and KTr, respectively. The detected SNPs distributed in nine chromosomes and accounted for 8.7–21% of the phenotypic variation, suggesting that both stomatal sensitivity to soil drought and the speed of stomatal closure to completion were controlled by multiple genes with moderate effects. Multivariate GWAS detected ten more significant SNPs in addition to confirming eight of the twenty SNPs as detected by univariate GWAS. Integrated, a final set of 30 significant SNPs associated with stomatal closure were reported. Taken together, our work, by combining phenomics and genetics, enables forward genetic mapping of the genetic architecture of stomatal traits related to drought tolerance, which not only provides a basis for molecular breeding of drought resistant cultivars of cowpea, but offers a new methodology to explore the genetic determinants of water budgeting in crops under stressful conditions in the phenomics era.
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Affiliation(s)
- Xinyi Wu
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Ting Sun
- College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Wenzhao Xu
- Huaiyin Institute of Agricultural Sciences of Xuhuai Region in Jiangsu, Huaian, China
| | - Yudong Sun
- Huaiyin Institute of Agricultural Sciences of Xuhuai Region in Jiangsu, Huaian, China
| | - Baogen Wang
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Ying Wang
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yanwei Li
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jian Wang
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Xiaohua Wu
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Zhongfu Lu
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Pei Xu
- College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Guojing Li
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China.,State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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