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Wang J, Fan Y, Liang L, Dong Z, Li M, Wu Z, Lin X, Wang X, Zhen Z. GO promotes detoxification of nicosulfuron in sweet corn by enhancing photosynthesis, chlorophyll fluorescence parameters, and antioxidant enzyme activity. Sci Rep 2024; 14:21213. [PMID: 39261661 PMCID: PMC11390891 DOI: 10.1038/s41598-024-72203-7] [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: 02/14/2024] [Accepted: 09/04/2024] [Indexed: 09/13/2024] Open
Abstract
Although graphene oxide (GO) has extensive recognized application prospects in slow-release fertilizer, plant pest control, and plant growth regulation, the incorporation of GO into nano herbicides is still in its early stages of development. This study selected a pair of sweet corn sister lines, nicosulfuron (NIF)-resistant HK301 and NIF-sensitive HK320, and sprayed them both with 80 mg kg-1 of GO-NIF, with clean water as a control, to study the effect of GO-NIF on sweet corn seedling growth, photosynthesis, chlorophyll fluorescence, and antioxidant system enzyme activity. Compared to spraying water and GO alone, spraying GO-NIF was able to effectively reduce the toxic effect of NIF on sweet corn seedlings. Compared with NIF treatment, 10 days after of spraying GO-NIF, the net photosynthetic rate (A), stomatal conductance (Gs), transpiration rate (E), photosystem II photochemical maximum quantum yield (Fv/Fm), photochemical quenching coefficient (qP), and photosynthetic electron transfer rate (ETR) of GO-NIF treatment were significantly increased by 328.31%, 132.44%, 574.39%, 73.53%, 152.41%, and 140.72%, respectively, compared to HK320. Compared to the imbalance of redox reactions continuously induced by NIF in HK320, GO-NIF effectively alleviated the observed oxidative pressure. Furthermore, compared to NIF treatment alone, GO-NIF treatment effectively increased the activities of superoxide dismutase (SOD), guaiacol peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) in both lines, indicating GO induced resistance to the damage caused by NIF to sweet corn seedlings. This study will provides an empirical basis for understanding the detoxification promoting effect of GO in NIF and analyzing the mechanism of GO induced allogeneic detoxification in cells.
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Affiliation(s)
- Jian Wang
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, 066000, Hebei Province, China
| | - Yanyan Fan
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, 066000, Hebei Province, China
| | - Lina Liang
- Tangshan Agriculture and Rural Affairs Bureau, Crop Seeds Station of Tangshan, Tangshan, 063000, Hebei Province, China
| | - Zechen Dong
- Tangshan Agriculture and Rural Affairs Bureau, Crop Seeds Station of Tangshan, Tangshan, 063000, Hebei Province, China
| | - Mengyang Li
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, 066000, Hebei Province, China
| | - Zhenxing Wu
- Institute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, 322100, China
| | - Xiaohu Lin
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, 066000, Hebei Province, China
| | - Xiuping Wang
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, 066000, Hebei Province, China.
| | - Zhihua Zhen
- Tangshan Agriculture and Rural Affairs Bureau, Crop Seeds Station of Tangshan, Tangshan, 063000, Hebei Province, China.
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2
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Rinshad V, Aggarwal M, Clegg JK, Mukherjee PS. Harnessing a Pd 4 Water-Soluble Molecular Capsule as a Size-Selective Catalyst for Targeted Oxidation of Alkyl Aromatics. JACS AU 2024; 4:3238-3247. [PMID: 39211591 PMCID: PMC11350579 DOI: 10.1021/jacsau.4c00539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 08/05/2024] [Accepted: 08/06/2024] [Indexed: 09/04/2024]
Abstract
Molecular hosts with functional cavities can emulate enzymatic behavior through selective encapsulation of substrates, resulting in high chemo-, regio-, and stereoselective product formation. It is still challenging to synthesize enzyme-mimicking hosts that exhibit a narrow substrate scope that relies upon the recognition of substrates based on the molecular size. Herein, we introduce a Pd4 self-assembled water-soluble molecular capsule [M 4 L 2] (MC) that was formed through the self-assembly of a ligand L (4',4‴'-(1,4-phenylene)bis(1',4'-dihydro-[4,2':6',4″-terpyridine]-3',5'-dicarbonitrile)) with the acceptor cis-[(en)Pd(NO3)2] [en = ethane-1,2-diamine] (M). The molecular capsule MC showed size-selective recognition towards xylene isomers. The redox property of MC was explored for efficient and selective oxidation of one of the alkyl groups of m-xylene and p-xylene to their corresponding toluic acids using molecular O2 as an oxidant upon photoirradiation. Employing host-guest chemistry, we demonstrate the homogeneous catalysis of alkyl aromatics to the corresponding monocarboxylic acids in water under mild conditions. Despite homogeneous catalysis, the products were separated from the reaction mixtures by simple filtration/extraction, and the catalyst was reused. The larger analogues of the alkyl aromatics failed to bind within the MC's hydrophobic cavity, resulting in a lower/negligible reaction outcome. The present study represents a facile approach for selective photo-oxidation of xylene isomers to their corresponding toluic acids in an aqueous medium under mild conditions.
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Affiliation(s)
- Valiyakath
Abdul Rinshad
- Department
of Inorganic and Physical Chemistry, Indian
Institute of Science, Bangalore 560012, India
| | - Medha Aggarwal
- Department
of Inorganic and Physical Chemistry, Indian
Institute of Science, Bangalore 560012, India
| | - Jack K. Clegg
- School
of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Partha Sarathi Mukherjee
- Department
of Inorganic and Physical Chemistry, Indian
Institute of Science, Bangalore 560012, India
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3
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Font-Farre M, Brown D, Toth R, Mahadevan C, Brazier-Hicks M, Morimoto K, Kaschani F, Sinclair J, Dale R, Hall S, Morris M, Kaiser M, Wright AT, Burton J, van der Hoorn RAL. Discovery of active mouse, plant and fungal cytochrome P450s in endogenous proteomes and upon expression in planta. Sci Rep 2024; 14:10091. [PMID: 38698065 PMCID: PMC11066006 DOI: 10.1038/s41598-024-60333-x] [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: 08/01/2023] [Accepted: 04/22/2024] [Indexed: 05/05/2024] Open
Abstract
Eukaryotes produce a large number of cytochrome P450s that mediate the synthesis and degradation of diverse endogenous and exogenous metabolites. Yet, most of these P450s are uncharacterized and global tools to study these challenging, membrane-resident enzymes remain to be exploited. Here, we applied activity profiling of plant, mouse and fungal P450s with chemical probes that become reactive when oxidized by P450 enzymes. Identification by mass spectrometry revealed labeling of a wide range of active P450s, including six plant P450s, 40 mouse P450s and 13 P450s of the fungal wheat pathogen Zymoseptoria tritici. We next used transient expression of GFP-tagged P450s by agroinfiltration to show ER-targeting and NADPH-dependent, activity-based labeling of plant, mouse and fungal P450s. Both global profiling and transient expression can be used to detect a broad range of active P450s to study e.g. their regulation and discover selective inhibitors.
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Affiliation(s)
- Maria Font-Farre
- The Plant Chemetics Laboratory, Department of Biology, University of Oxford, Oxford, UK
| | - Daniel Brown
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
| | - Reka Toth
- Department of Biology, University of Oxford, Oxford, UK
| | | | | | - Kyoko Morimoto
- The Plant Chemetics Laboratory, Department of Biology, University of Oxford, Oxford, UK
| | - Farnusch Kaschani
- ZMB Chemical Biology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - John Sinclair
- Bioscience, Syngenta, Jealotts Hill International Research Centre, Bracknell, UK
| | - Richard Dale
- Bioscience, Syngenta, Jealotts Hill International Research Centre, Bracknell, UK
| | - Samantha Hall
- Bioscience, Syngenta, Jealotts Hill International Research Centre, Bracknell, UK
| | - Melloney Morris
- Bioscience, Syngenta, Jealotts Hill International Research Centre, Bracknell, UK
| | - Markus Kaiser
- ZMB Chemical Biology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | | | - Jonathan Burton
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
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Sudhakar S, Nakka S, Mohammad A, Trick HN, Prasad PVV, Jugulam M. Metabolism of Tembotrione, a Triketone Herbicide, confers Differential Sensitivity in Winter Wheat ( Triticum aestivum). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:6931-6941. [PMID: 38514379 DOI: 10.1021/acs.jafc.3c08852] [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: 03/23/2024]
Abstract
Tembotrione is a triketone herbicide widely used for broad-spectrum weed control in corn but not registered for use in wheat. A wide collection of spring, winter, and EMS-derived mutant lines of wheat was evaluated for their response to tembotrione treatment. Two winter wheat (WW) genotypes (WW-1 and WW-2) were found to be least sensitive to this herbicide, surviving >6 times the field recommended dose (92 g ai ha-1) compared to the most sensitive genotype (WW-24). Further, HPLC analysis using [14C] tembotrione suggested that both WW-1 and WW-2 metabolized tembotrione rapidly to nontoxic metabolites. Pretreatment with a P450 inhibitor (malathion) followed by tembotrione application increased the sensitivity of WW-1 and WW-2 genotypes to this herbicide, suggesting likely involvement of P450 enzymes in metabolizing tembotrione similar to corn. Overall, our results suggest that the genotypes WW-1 and WW-2 can potentially be used to develop tembotrione-resistant wheat varieties.
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Affiliation(s)
- Susee Sudhakar
- Department of Agronomy, Kansas State University, Manhattan, Kansas 66506-0100, United States
| | - Sridevi Nakka
- Tritica Biosciences, Wamego, Kansas 66535, United States
| | - Asif Mohammad
- Department of Agronomy, Kansas State University, Manhattan, Kansas 66506-0100, United States
- Heartland Plant Innovations Inc., Manhattan, Kansas 66506-0100, United States
| | - Harold N Trick
- Department of Plant Pathology, Kansas State University, Manhattan, Kansas 66506-0100, United States
| | - P V Vara Prasad
- Department of Agronomy, Kansas State University, Manhattan, Kansas 66506-0100, United States
| | - Mithila Jugulam
- Department of Agronomy, Kansas State University, Manhattan, Kansas 66506-0100, United States
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Williams MM, Hausman NE, Saballos A, Landau CA, Brooks MD, Flannery P, Tracy WF, Thompson CJ. First report of severe tolpyralate sensitivity in corn (Zea mays) discovers a novel genetic factor conferring crop response to a herbicide. PEST MANAGEMENT SCIENCE 2024; 80:1645-1653. [PMID: 37986260 DOI: 10.1002/ps.7896] [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: 10/02/2023] [Revised: 11/15/2023] [Accepted: 11/21/2023] [Indexed: 11/22/2023]
Abstract
BACKGROUND Tolpyralate, a relatively new inhibitor of 4-hydroxyphenylpyruvate dioxygenase (HPPD), is registered for postemergence use in all types of corn (Zea mays L.) and has a record of excellent crop tolerance. A report of severe crop injury to sweet corn inbred (XSEN187) led to the following objectives: (i) determine whether sensitivity to tolpyralate in XSEN187 exists, and if confirmed, (ii) determine the genetic basis of tolpyralate sensitivity, and (iii) screen other corn germplasm for sensitivity to tolpyralate. RESULTS Inbred XSEN187 was confirmed sensitive to tolpyralate. Inclusion of methylated seed oil or nonionic surfactant in the spray volume was necessary for severe crop injury. Tolpyralate sensitivity in XSEN187 is not conferred by alleles at Nsf1, a cytochrome P450-encoding gene (CYP81A9) conferring tolerance to many corn herbicides. Evidence suggests that tolpyralate sensitivity in XSEN187 is conferred by a single gene mapped to the Chr05: 283 240-1 222 909 bp interval. Moreover, tolpyralate sensitivity was observed in 48 other sweet corn and field corn inbreds. CONCLUSIONS Severe sensitivity to tolpyralate exists in sweet corn and field corn germplasm when the herbicide is applied according to label directions. Whereas the corn response to several other herbicides, including HPPD-inhibitors, is conferred by the Nsf1 locus, corn sensitivity to tolpyralate is the result of a different locus. The use of tolpyralate should consider herbicide tolerance in inbred lines from which corn hybrids were derived, whereas alleles that render corn germplasm sensitive to tolpyralate should be eliminated from breeding populations, inbreds, and commercial cultivars. © 2023 Illinois Foundation Seeds, Inc and The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.
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Affiliation(s)
- Martin M Williams
- Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL, USA
| | - Nicholas E Hausman
- Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL, USA
| | - Ana Saballos
- Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL, USA
| | | | - Matthew D Brooks
- Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL, USA
| | - Pat Flannery
- Department of Agronomy, University of Wisconsin-Madison, Madison, WI, USA
| | - William F Tracy
- Department of Agronomy, University of Wisconsin-Madison, Madison, WI, USA
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Pingarron-Cardenas G, Onkokesung N, Goldberg-Cavalleri A, Lange G, Dittgen J, Edwards R. Selective herbicide safening in dicot plants: a case study in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2024; 14:1335764. [PMID: 38288413 PMCID: PMC10822893 DOI: 10.3389/fpls.2023.1335764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 12/22/2023] [Indexed: 01/31/2024]
Abstract
Safeners are agrochemicals co-applied with herbicides that facilitate selective control of weeds by protecting monocot crops from chemical injury through enhancing the expression of detoxifying enzymes such as glutathione transferases (GSTs). Even though the application of safeners causes the induction of genes encoding GSTs in model dicots such as Arabidopsis thaliana, safeners do not protect broadleaf crops from herbicide injury. In this study, we proposed that the localized induction of Arabidopsis GSTs and the fundamental differences in their detoxifying activity between dicot and monocot species, underpin the failure of safeners to protect Arabidopsis from herbicide toxicity. Using the herbicide safener, isoxadifen-ethyl, we showed that three tau (U) family GSTs namely AtGSTU7, AtGSTU19 and AtGSTU24 were induced with different magnitude by isoxadifen treatment in root and rosette tissues. The higher magnitude of inducibility of these AtGSTUs in the root tissues coincided with the enhanced metabolism of flufenacet, a herbicide that is active in root tissue, protecting Arabidopsis plants from chemical injury. Assay of the recombinant enzyme activities and the significant reduction in flufenacet metabolism determined in the T-DNA insertion mutant of AtGSTU7 (gstu7) in Arabidopsis plants identified an important function for AtGSTU7 protein in flufenacet detoxification. In-silico structural modeling of AtGSTU7, suggested the unique high activity of this enzyme toward flufenacet was due to a less constrained active site compared to AtGSTU19 and AtGSTU24. We demonstrate here that it is possible to induce herbicide detoxification in dicotyledonous plants by safener treatment, albeit with this activity being restricted to very specific combinations of herbicide chemistry, and the localized induction of enzymes with specific detoxifying activities.
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Affiliation(s)
- Gabriela Pingarron-Cardenas
- Agriculture, School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Nawaporn Onkokesung
- Agriculture, School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Alina Goldberg-Cavalleri
- Agriculture, School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Gudrun Lange
- Bayer Aktiengesellschaft (AG), Crop Science Division, Computational Life Sciences, Frankfurt, Germany
| | - Jan Dittgen
- Bayer Aktiengesellschaft (AG), Crop Science Division, Weed Control Research, Frankfurt, Germany
| | - Robert Edwards
- Agriculture, School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
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Hu M, Zhang H, Kong L, Ma J, Wang T, Lu X, Guo Y, Zhang J, Guan R, Chu P. Comparative proteomic and physiological analyses reveal tribenuron-methyl phytotoxicity and nontarget-site resistance mechanisms in Brassica napus. PLANT, CELL & ENVIRONMENT 2023; 46:2255-2272. [PMID: 37102754 DOI: 10.1111/pce.14598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/12/2023] [Accepted: 04/18/2023] [Indexed: 06/08/2023]
Abstract
The application of herbicides is the most effective strategy for weed control and the development of herbicide-resistant crops will facilitate the weed management. The acetolactate synthase-inhibiting herbicide, tribenuron-methyl (TBM), is broadly used for weed control. However, its application in rapeseed field is restricted since rapeseed is sensitive to TBM. Herein, an integrated study of cytological, physiological and proteomic analysis of the TBM-resistant rapeseed mutant M342 and its wild-type (WT) plants was conducted. After TBM spraying, M342 showed improved tolerance to TBM, and proteins implicated in non-target-site resistance (NTSR) to herbicides had a significantly higher level in M342 as compared with the WT. Differentially accumulated proteins (DAPs) between these two genotypes were enriched in glutathione metabolism and oxidoreduction coenzyme metabolic process, which protected the mutant from oxidative stress triggered by TBM. Important DAPs related to stress or defence response were up-accumulated in M342 regardless of the TBM treatment, which might serve as the constitutive part of NTSR to TBM. These results provide new clues for further exploration of the NTSR mechanism in plants and establish a theoretical basis for the development of herbicide-resistant crops.
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Affiliation(s)
- Maolong Hu
- Key Laboratory of Cotton and Rapeseed, Ministry of Agriculture and Rural Affairs, Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Centre for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
- Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Hongkun Zhang
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Centre for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Lingna Kong
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Centre for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Juanjuan Ma
- Key Laboratory of Cotton and Rapeseed, Ministry of Agriculture and Rural Affairs, Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
- Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Ting Wang
- Key Laboratory of Cotton and Rapeseed, Ministry of Agriculture and Rural Affairs, Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Xinyu Lu
- Key Laboratory of Cotton and Rapeseed, Ministry of Agriculture and Rural Affairs, Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yue Guo
- Key Laboratory of Cotton and Rapeseed, Ministry of Agriculture and Rural Affairs, Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Jiefu Zhang
- Key Laboratory of Cotton and Rapeseed, Ministry of Agriculture and Rural Affairs, Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Rongzhan Guan
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Centre for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Pu Chu
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Centre for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
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Werck-Reichhart D. Promiscuity, a Driver of Plant Cytochrome P450 Evolution? Biomolecules 2023; 13:biom13020394. [PMID: 36830762 PMCID: PMC9953472 DOI: 10.3390/biom13020394] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
Plant cytochrome P450 monooxygenases were long considered to be highly substrate-specific, regioselective and stereoselective enzymes, in this respect differing from their animal counterparts. The functional data that have recently accumulated clearly counter this initial dogma. Highly promiscuous P450 enzymes have now been reported, mainly in terpenoid pathways with functions in plant adaptation, but also some very versatile xenobiotic/herbicide metabolizers. An overlap and predictable interference between endogenous and herbicide metabolism are starting to emerge. Both substrate preference and permissiveness vary between plant P450 families, with high promiscuity seemingly favoring retention of gene duplicates and evolutionary blooms. Yet significant promiscuity can also be observed in the families under high negative selection and with essential functions, usually enhanced after gene duplication. The strategies so far implemented, to systematically explore P450 catalytic capacity, are described and discussed.
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Affiliation(s)
- Danièle Werck-Reichhart
- Institut de Biologie Moléculaire des Plantes du Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg, 67000 Strasbourg, France
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Bao Z, Zou J, Mou C, Jin Z, Ren SC, Chi YR. Direct Reaction of Nitroarenes and Thiols via Photodriven Oxygen Atom Transfer for Access to Sulfonamides. Org Lett 2022; 24:8907-8913. [PMID: 36421405 DOI: 10.1021/acs.orglett.2c03770] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Sulfonamide is a common motif in medicines and agrochemicals. Typically, this class of functional groups is prepared by reacting amines with sulfonyl chlorides that are presynthesized from nitro compounds and thiols, respectively. Here, we report a novel strategy that directly couples nitro compounds and thiols to form sulfonamides atom- and redox-economically. Mechanistic studies suggest our reaction proceeds via direct photoexcitation of nitroarenes that eventually transfers the oxygen atoms from the nitro group to the thiol unit.
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Affiliation(s)
- Zhaowei Bao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Juan Zou
- Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Chengli Mou
- Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Zhichao Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Shi-Chao Ren
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yonggui Robin Chi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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