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Nogueira Neto FA, Freitas Souza MD, Blat NR, da Silva FD, Fernandes BCC, das Chagas PSF, Araujo PCD, Lins HA, Silva DV. Sensitivity and antioxidant response of forest species seedlings to the atrazine under simulated conditions of subsurface water contamination. CHEMOSPHERE 2024; 360:142411. [PMID: 38789050 DOI: 10.1016/j.chemosphere.2024.142411] [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: 02/21/2024] [Revised: 05/18/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024]
Abstract
Atrazine is an herbicide with a high soil leaching capacity, contaminating subsurface water sources. Once the water table is contaminated, riparian species can be exposed to atrazine. In this way, understanding the impacts of this exposure must be evaluated for planning strategies that minimize the effects of this herbicide on native forest species. We aimed to evaluate forest species' sensitivity and antioxidant response to exposure to subsurface waters contaminated with atrazine, as well the dissipation this herbicide. The experiment was conducted in a greenhouse in a completely randomized design, with three replications and one plant per experimental unit. The treatments were arranged in a 2 × 10 factorial. The first factor corresponded to the presence or absence (control) of the atrazine in the subsurface water. The second factor comprised 10 forest species: Amburana cearensis, Anadenanthera macrocarpa, Bauhinia cheilantha, Enterolobium contortisiliquum, Hymenaea courbaril, Libidibia ferrea, Mimosa caesalpiniifolia, Mimosa tenuiflora, Myracrodruon urundeuva, and Tabebuia aurea. The forest species studied showed different sensitivity levels to atrazine in subsurface water. A. cearensis and B. cheilantha species do not have efficient antioxidant systems to prevent severe oxidative damage. The species A. macrocarpa, E. contortisiliquum, L. ferrea, and M. caesalpiniifolia are moderately affected by atrazine. H. courbaril, M. urundeuva, and T. aurea showed greater tolerance to atrazine due to the action of the antioxidant system of these species, avoiding membrane degradation events linked to the production of reactive oxygen species (ROS). Among the forest species, H. courbaril has the most significant remedial potential due to its greater tolerance and reduced atrazine concentrations in the soil.
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Affiliation(s)
| | | | | | - Francisca Daniele da Silva
- Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil
| | | | | | | | - Hamurábi Anizio Lins
- Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil.
| | - Daniel Valadão Silva
- Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil
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Hoyos V, Plaza G, Palma-Bautista C, Vázquez-García JG, Dominguez-Valenzuela JA, Alcántara-de la Cruz R, De Prado R. Divergence in Glyphosate Susceptibility between Steinchisma laxum Populations Involves a Pro106Ser Mutation. PLANTS (BASEL, SWITZERLAND) 2023; 12:3315. [PMID: 37765479 PMCID: PMC10534422 DOI: 10.3390/plants12183315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/11/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
The characterization of the mechanisms conferring resistance to herbicides in weeds is essential for developing effective management programs. This study was focused on characterizing the resistance level and the main mechanisms that confer resistance to glyphosate in a resistant (R) Steinchisma laxum population collected in a Colombian rice field in 2020. The R population exhibited 11.2 times higher resistance compared to a susceptible (S) population. Non-target site resistance (NTSR) mechanisms that reduced absorption and impaired translocation and glyphosate metabolism were not involved in the resistance to glyphosate in the R population. Evaluating the target site resistance mechanisms by means of enzymatic activity assays and EPSPS (5-enolpyruvylshikimate-3-phosphate synthase) gene sequencing, the mutation Pro106Ser was found in R plants of S. laxum. These findings are crucial for managing the spread of S. laxum resistance in Colombia. To effectively control S. laxum in the future, it is imperative that farmers use herbicides with different mechanisms of action in addition to glyphosate and adopt Integrate Management Programs to control weeds in rice fields of the central valleys of Colombia.
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Affiliation(s)
- Veronica Hoyos
- Departamento de Ciencias Biológicas, Universidad Nacional de Colombia, Palmira 763533, Colombia
| | - Guido Plaza
- Departamento de Agronomía, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - Candelario Palma-Bautista
- Departamento de Parasitología Agrícola, Universidad Autónoma Chapingo, Texcoco 56230, Mexico
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, 14014 Cordoba, Spain
| | - Jose G. Vázquez-García
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, 14014 Cordoba, Spain
| | | | | | - Rafael De Prado
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, 14014 Cordoba, Spain
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Luo Q, Chen S, Nian H, Ma Q, Ding Y, Hao Q, Wei J, Patel JD, McElroy JS, Liu Y, Chen Y. Establishment of an Efficient Agrobacterium-Mediated Genetic Transformation System to Enhance the Tolerance of the Paraquat Stress in Engineering Goosegrass (Eleusine Indica L.). Int J Mol Sci 2023; 24:ijms24076629. [PMID: 37047599 PMCID: PMC10095498 DOI: 10.3390/ijms24076629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/25/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023] Open
Abstract
Eleusine indica (goosegrass) is a problematic weed worldwide known for its multi-herbicide tolerance/resistance biotype. However, a genetic transformation method in goosegrass has not been successfully established, making a bottleneck for functional genomics studies in this species. Here, we report a successful Agrobacterium-mediated transformation method for goosegrass. Firstly, we optimized conditions for breaking seed dormancy and increasing seed germination rate. A higher callus induction rate from germinated seeds was obtained in N6 than in MS or B5 medium. Then the optimal transformation efficiency of the gus reporter gene was obtained by infection with Agrobacterium tumefaciens culture of OD600 = 0.5 for 30 min, followed by 3 days of co-cultivation with 300 μmol/L acetosyringone. Concentrations of 20 mg L−1 kanamycin and 100 mg L−1 timentin were used to select the transformed calli. The optimal rate of regeneration of the calli was generated by using 0.50 mg L−1 6-BA and 0.50 mg L−1 KT in the culture medium. Then, using this transformation method, we overexpressed the paraquat-resistant EiKCS gene into a paraquat-susceptible goosegrass biotype MZ04 and confirmed the stable inheritance of paraquat-resistance in the transgenic goosegrass lines. This approach may provide a potential mechanism for the evolution of paraquat-resistant goosegrass and a promising gene for the manipulation of paraquat-resistance plants. This study is novel and valuable in future research using similar methods for herbicide resistance.
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Affiliation(s)
- Qiyu Luo
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
- Department of Crop, Soil, and Environmental Sciences, Auburn University, Auburn, AL 36830, USA
| | - Shu Chen
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China
| | - Hai Nian
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Qibing Ma
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Yuyao Ding
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Qinwen Hao
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Jiping Wei
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Jinesh D. Patel
- Department of Crop, Soil, and Environmental Sciences, Auburn University, Auburn, AL 36830, USA
| | - Joseph Scott McElroy
- Department of Crop, Soil, and Environmental Sciences, Auburn University, Auburn, AL 36830, USA
| | - Yaoguang Liu
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Yong Chen
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China
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Vázquez-García JG, Hoyos V, Plaza G, Palma-Bautista C, Alcántara-de la Cruz R, De Prado R. Glyphosate resistance in Chloris radiata from colombian rice fields involves one target-site mechanism. CHEMOSPHERE 2021; 281:130888. [PMID: 34029964 DOI: 10.1016/j.chemosphere.2021.130888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/04/2021] [Accepted: 05/09/2021] [Indexed: 06/12/2023]
Abstract
At present, appearance of herbicide resistant weeds is not new because repeated herbicide treatments per agricultural year/cycle are usual in both perennial and annual crops worldwide. Characterizing resistance mechanisms implied in each herbicide resistant weed is the best tool and the basis to develop integrated weed management (IWM) strategies. The main resistance mechanisms which confer low sensibility to glyphosate in a previously confirmed glyphosate-resistant Chloris radiata population (ChrR), occurring in Colombian rice fields, were characterized. Pure line selection by clone plants showed high resistance levels in ChrR. Comparing with GR50 and LD50 values, ChrR was 9.6 and 10.8 times more resistant with respect to a representative susceptible population (ChrS). The nontarget site mechanisms reduced glyphosate absorption and translocation did not contribute to the glyphosate resistance of the ChrR population. However, enzyme activity assays and DNA sequencing demonstrated that at least one target-site resistance mechanism is involved in such resistance. All ten ChrR plants tested had the amino acid substitution Pro-106-Ser. The results may be crucial to decrease the resistance distribution of C. radiata in Colombia by implementing IWM programs. The change in weed control strategies in rice fields from Colombia must include herbicides with different mode of action from glyphosate and non chemical methods to preserve the useful life of glyphosate longer for weed control in the country.
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Affiliation(s)
- José G Vázquez-García
- Department of Agricultural Chemistry and Edaphology, University of Cordoba, 14071, Cordoba, Spain
| | - Verónica Hoyos
- Facultad de Ingeniería, Universidad Del Magdalena, Santa Marta, 470004, Magdalena, Colombia
| | - Guido Plaza
- Departamento de Agronomía, Universidad Nacional de Colombia, 111321, Bogotá, Colombia
| | | | - Ricardo Alcántara-de la Cruz
- Centro de Ciências da Natureza, Universidade Federal de São Carlos, Campus Lagoa Do Sino, 18290-000, Buri, Brazil.
| | - Rafael De Prado
- Department of Agricultural Chemistry and Edaphology, University of Cordoba, 14071, Cordoba, Spain
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