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Cagnin Pereira T, Cardoso LP, da Silva de Paiva W, Santos de Camargos L, Cristina Rodrigues-Lisoni F, Redondo Martins A. Analysis of metabolic compounds and antitumorigenic effects of Albizia niopoides and Senegalia polyphylla leaves. Nat Prod Res 2024:1-8. [PMID: 38530002 DOI: 10.1080/14786419.2024.2331603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 03/10/2024] [Indexed: 03/27/2024]
Abstract
The objective of this study was to quantify metabolic compounds in leaves of A. niopoides and S. polyphylla and to evaluate the antitumor potential of extracts from both species in cervical tumour cells. The physiological analyses performed were quantification of starch, sucrose, phenolic compounds and proteins. An aqueous extract was prepared and added to the SiHa cell line at concentrations of 10, 100 and 1000 μg/mL at 4h, 24h, 48h and 72h. Cell morphology, proliferation and viability were analysed. The species showed a large amount of starch and phenolic compounds. Treatment with the extract of both species caused morphological changes in SiHa cells and exhibited antiproliferative effects at a concentration of 1000 µg/ml. In cell viability test, only A. niopoides showed a significant reduction. The study presented the effects of the species against a cervical cancer cell line, where A. niopoides has already shown to be a promising plant drug.
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Affiliation(s)
- Thalissa Cagnin Pereira
- Department of Biology and Animal Science, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Faculdade de Engenharia (Feis), Ilha Solteira, SP, Brazil
| | - Luana Pereira Cardoso
- Department of Biological Sciences, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Instituto de Biociências, Letras e Ciências Exatas (Ibilce), São José do Rio Preto, SP, Brazil
| | - Wesller da Silva de Paiva
- Department of Biology and Animal Science, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Faculdade de Engenharia (Feis), Ilha Solteira, SP, Brazil
| | - Liliane Santos de Camargos
- Department of Biology and Animal Science, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Faculdade de Engenharia (Feis), Ilha Solteira, SP, Brazil
| | - Flávia Cristina Rodrigues-Lisoni
- Department of Biology and Animal Science, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Faculdade de Engenharia (Feis), Ilha Solteira, SP, Brazil
- Department of Biological Sciences, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Instituto de Biociências, Letras e Ciências Exatas (Ibilce), São José do Rio Preto, SP, Brazil
| | - Aline Redondo Martins
- Department of Biology and Animal Science, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Faculdade de Engenharia (Feis), Ilha Solteira, SP, Brazil
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de Oliveira CPM, Simões WL, de Melo Chaves AR, Silva JSD, Pereira Ribeiro Teodoro L, de Camargos LS, Gava R, Sobral YRA, Teodoro PE. Water strategy improves the inflorescence primordia formation of 'Arra 15' grapevine in the Brazilian semiarid region. Sci Rep 2024; 14:6678. [PMID: 38509214 PMCID: PMC10954739 DOI: 10.1038/s41598-024-57215-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 03/15/2024] [Indexed: 03/22/2024] Open
Abstract
Failure in irrigation management of grapevines grown in the Brazilian semiarid region can affect bud fertility. Adequate irrigation, considering both the development of bunches in the current cycle and the formation of fertile buds for subsequent cycles, can bring significant advances to viticulture. Therefore, the objective of this research was to investigate the effect of different irrigation levels during flowering on the formation of buds and potential bunches of 'Arra 15' grapevine and its relationship with metabolic processes. A field experiment was carried out in a commercial vineyard in Petrolina, Pernambuco, Brazil, during the 2021 and 2022 seasons. The experiment was designed in randomized blocks with four replications and five irrigation levels (70; 85; 100; 115 and 130% of crop evapotranspiration - ETc) during three production cycles. The variables fertile bud, vegetative bud, dead bud, potential fertility of the basal, median, and apical regions of the branches, number of potential bunches, reducing sugar, total soluble sugar, net photosynthesis, stomatal conductance, transpiration, and relative chlorophyll index were evaluated. The 115% ETc irrigation level improved the number of fertile buds and number of potential bunches. Irrigation level above 115% ETc increased gas exchange and relative chlorophyll index, while 70% ETc increased leaf sugar content. The most appropriate irrigation strategy is the application of 115% ETc during the flowering stage, for the increase of fertile buds and potential bunches of the next cycle, without influencing the vine metabolism. Total soluble sugars are a promising indicator of water deficit during flowering and as an indicator of vegetative bud formation for the next cycle.
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Affiliation(s)
| | - Welson Lima Simões
- Center for Agricultural Research in the Semi-Arid Tropics, Brazilian Agricultural Research Corporation (EMBRAPA), Petrolina, PE, 56302-970, Brazil
| | - Agnaldo Rodrigues de Melo Chaves
- Center for Agricultural Research in the Semi-Arid Tropics, Brazilian Agricultural Research Corporation (EMBRAPA), Petrolina, PE, 56302-970, Brazil
| | - Jucicléia Soares da Silva
- Center for Agricultural Research in the Semi-Arid Tropics, Brazilian Agricultural Research Corporation (EMBRAPA), Petrolina, PE, 56302-970, Brazil
| | | | | | - Ricardo Gava
- Federal University of Mato Grosso do Sul (UFMS), Chapadão do Sul, MS, 79560-000, Brazil
| | | | - Paulo Eduardo Teodoro
- Federal University of Mato Grosso do Sul (UFMS), Chapadão do Sul, MS, 79560-000, Brazil.
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Oliveira CEDS, Jalal A, Aguilar JV, de Camargos LS, Zoz T, Ghaley BB, Abdel-Maksoud MA, Alarjani KM, AbdElgawad H, Teixeira Filho MCM. Yield, nutrition, and leaf gas exchange of lettuce plants in a hydroponic system in response to Bacillus subtilis inoculation. Front Plant Sci 2023; 14:1248044. [PMID: 37954988 PMCID: PMC10634435 DOI: 10.3389/fpls.2023.1248044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 10/06/2023] [Indexed: 11/14/2023]
Abstract
Inoculation with Bacillus subtilis is a promising approach to increase plant yield and nutrient acquisition. In this context, this study aimed to estimate the B. subtilis concentration that increases yield, gas exchange, and nutrition of lettuce plants in a hydroponic system. The research was carried out in a greenhouse in Ilha Solteira, Brazil. A randomized block design with five replications was adopted. The treatments consisted of B. subtilis concentrations in nutrient solution [0 mL "non-inoculated", 7.8 × 103, 15.6 × 103, 31.2 × 103, and 62.4 × 103 colony forming units (CFU) mL-1 of nutrient solution]. There was an increase of 20% and 19% in number of leaves and 22% and 25% in shoot fresh mass with B. subtilis concentrations of 15.6 × 103 and 31.2 × 103 CFU mL-1 as compared to the non-inoculated plants, respectively. Also, B. subtilis concentration at 31.2 × 103 CFU mL-1 increased net photosynthesis rate by 95%, intercellular CO2 concentration by 30%, and water use efficiency by 67% as compared to the non-inoculated treatments. The concentration of 7.8 × 103 CFU mL-1 improved shoot accumulation of Ca, Mg, and S by 109%, 74%, and 69%, when compared with non-inoculated plants, respectively. Inoculation with B. subtilis at 15.6 × 103 CFU mL-1 provided the highest fresh leaves yield while inoculation at 15.6 × 103 and 31.2 × 103 CFU mL-1 increased shoot fresh mass and number of leaves. Concentrations of 7.8 × 103 and 15.6 × 103 increased shoot K accumulation. The concentrations of 7.8 × 103, 15.6 × 103, and 31.2 × 103 CFU mL-1 increased shoot N accumulation in hydroponic lettuce plants.
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Affiliation(s)
- Carlos Eduardo da Silva Oliveira
- Department of Plant Protection, Rural Engineering and Soils, School of Engineering, São Paulo State University - UNESP-FEIS, Ilha Solteira, São Paulo, Brazil
| | - Arshad Jalal
- Department of Plant Protection, Rural Engineering and Soils, School of Engineering, São Paulo State University - UNESP-FEIS, Ilha Solteira, São Paulo, Brazil
| | - Jailson Vieira Aguilar
- Department of Biology and Zootechnics, Lab of Plant Morphology and Anatomy/Lab Plant Metabolism and Physiology, School of Engineering, São Paulo State University - UNESP-FEIS, Ilha Solteira, São Paulo, Brazil
| | - Liliane Santos de Camargos
- Department of Biology and Zootechnics, Lab of Plant Morphology and Anatomy/Lab Plant Metabolism and Physiology, School of Engineering, São Paulo State University - UNESP-FEIS, Ilha Solteira, São Paulo, Brazil
| | - Tiago Zoz
- Department of Crop Science, State University of Mato Grosso do Sul – UEMS, Mundo Novo, Mato Grosso do Sul, Brazil
| | - Bhim Bahadur Ghaley
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Mostafa A. Abdel-Maksoud
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Hamada AbdElgawad
- Laboratory for Molecular Plant Physiology and Biotechnology, Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Marcelo Carvalho Minhoto Teixeira Filho
- Department of Plant Protection, Rural Engineering and Soils, School of Engineering, São Paulo State University - UNESP-FEIS, Ilha Solteira, São Paulo, Brazil
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da Silva MB, de Camargos LS, Teixeira Filho MCM, Souza LA, Coscione AR, Lavres J, Abreu-Junior CH, He Z, Zhao F, Jani AD, Capra GF, Nogueira TAR. Residual effects of composted sewage sludge on nitrogen cycling and plant metabolism in a no-till common bean-palisade grass-soybean rotation. Front Plant Sci 2023; 14:1281670. [PMID: 37929176 PMCID: PMC10622979 DOI: 10.3389/fpls.2023.1281670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/02/2023] [Indexed: 11/07/2023]
Abstract
Introduction and aims In the context of increasing population and decreasing soil fertility, food security is one of humanity's greatest challenges. Large amounts of waste, such as sewage sludge, are produced annually, with their final disposal causing environmental pollution and hazards to human health. Sludge has high amounts of nitrogen (N), and, when safely recycled by applying it into the soil as composted sewage sludge (CSS), its residual effect may provide gradual N release to crops. A field study was conducted in the Brazilian Cerrado. The aims were to investigate the residual effect of successive applications of CSS as a source of N in the common bean (Phaseolus vulgaris L. cv. BRS Estilo)-palisade grass (Urochloa brizantha (A.Rich.) R.D. Webster)-soybean (Glycine max L.) rotation under no-tillage. Additionally, N cycling was monitored through changes in N metabolism; the efficiency of biological N2 fixation (BNF) and its implications for plant nutrition, development, and productivity, was also assessed. Methods The experiment consisted of a randomized complete block design comparing four CSS rates (10, 15, 20, and 25 Mg ha-1, wet basis) to a control treatment (without adding mineral or organic fertilizer) over two crop years. Multiple plant and soil analyses (plant development and crop yield, Falker chlorophyll index (FCI), enzymatic, biochemical, 15N natural abundance, was evaluated, root and shoot N accumulation, etc.) were evaluated. Results and discussion Results showed that CSS: i) maintained adequate N levels for all crops, increasing their productivity; ii) promoted efficient BNF, due to the stability of ureide metabolism in plants and increased protein content; iii) increased the nitrate content and the nitrate reductase activity in soybean; iv) affected urease activity and ammonium content due to changes in the plant's urea metabolism; v) increased N accumulation in the aerial part of palisade grass. Composted sewage sludge can be used as an alternative source to meet crops' N requirements, promoting productivity gains and N cycling through forage and improving N metabolism.
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Affiliation(s)
- Mariana Bocchi da Silva
- Department of Plant Protection, Rural Engineering, and Soils, São Paulo State University, Ilha Solteira, SP, Brazil
| | - Liliane Santos de Camargos
- Department of Plant Protection, Rural Engineering, and Soils, São Paulo State University, Ilha Solteira, SP, Brazil
| | | | - Lucas Anjos Souza
- Instituto Federal de Educação, Ciência e Tecnologia Goiano, Rio Verde, GO, Brazil
| | - Aline Renée Coscione
- Center of Soils and Environmental Resources of the Campinas Agronomic Institute, Campinas, SP, Brazil
| | - José Lavres
- Center for Nuclear Energy in Agriculture, Universidade de São Paulo, Piracicaba, SP, Brazil
| | | | - Zhenli He
- Indian River Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Fort Pierce, FL, United States
| | - Fengliang Zhao
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Arun Dilipkumar Jani
- Department of Biology and Chemistry, California State University, Monterey Bay, Seaside, CA, United States
| | - Gian Franco Capra
- Dipartimento di Architettura, Design e Urbanistica, Università Degli Studi di Sassari, Sassari, Italy
- Desertification Research Centre, Università Degli Studi di Sassari, Sassari, Italy
| | - Thiago Assis Rodrigues Nogueira
- Department of Plant Protection, Rural Engineering, and Soils, São Paulo State University, Ilha Solteira, SP, Brazil
- Department of Agricultural Sciences, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, SP, Brazil
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da Silva Oliveira CE, Jalal A, Vitória LS, Giolo VM, Oliveira TJSS, Aguilar JV, de Camargos LS, Brambilla MR, Fernandes GC, Vargas PF, Zoz T, Filho MCMT. Inoculation with Azospirillum brasilense Strains AbV5 and AbV6 Increases Nutrition, Chlorophyll, and Leaf Yield of Hydroponic Lettuce. Plants (Basel) 2023; 12:3107. [PMID: 37687354 PMCID: PMC10490540 DOI: 10.3390/plants12173107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/05/2023] [Accepted: 08/06/2023] [Indexed: 09/10/2023]
Abstract
Inoculation with Azospirillum brasilense has promisingly increased plant yield and nutrient acquisition. The study aimed to estimate the dose of A. brasilense that increases yield, gas exchange, nutrition, and foliar nitrate reduction. The research was carried out in a greenhouse at Ilha Solteira, in a hydroponic system in randomized blocks with four replicates. The treatments consisted of doses of inoculation with A. brasilense strains AbV5 and AbV6 via nutrient solution (0, 8, 16, 32, and 64 mL 100 L-1). Inoculation with A. brasilense at calculated doses between 20 and 44 mL provided the highest fresh and dry mass of shoots and roots, number of leaves, and leaf yield. In addition, the calculated doses of inoculation with A. brasilense increased the accumulation of N, P, K, Ca, Mg, S, B, Fe, Mn, and Zn in shoots and roots, except the accumulation of Ca in roots. It also increased cell membrane integrity index (15%), relative water content (13%), net photosynthesis rate (85%), intracellular CO2 concentration (15%), total chlorophyll (46%), stomatal conductance (56%), transpiration (15%), and water use efficiency (59%). Hence, inoculation with A. brasilense at doses between 20 and 44 mL 100 L-1 is considered the best approach for increasing the growth, yield, accumulation of nutrients, and gas exchange of hydroponically grown iceberg lettuce.
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Affiliation(s)
- Carlos Eduardo da Silva Oliveira
- Department of Plant Protection, Rural Engineering and Soils, Faculty of Engineering, São Paulo State University—UNESP-FEIS, Ilha Solteira 15385-000, SP, Brazil; (A.J.); (L.S.V.); (V.M.G.); (T.J.S.S.O.); (G.C.F.)
| | - Arshad Jalal
- Department of Plant Protection, Rural Engineering and Soils, Faculty of Engineering, São Paulo State University—UNESP-FEIS, Ilha Solteira 15385-000, SP, Brazil; (A.J.); (L.S.V.); (V.M.G.); (T.J.S.S.O.); (G.C.F.)
| | - Letícia Schenaide Vitória
- Department of Plant Protection, Rural Engineering and Soils, Faculty of Engineering, São Paulo State University—UNESP-FEIS, Ilha Solteira 15385-000, SP, Brazil; (A.J.); (L.S.V.); (V.M.G.); (T.J.S.S.O.); (G.C.F.)
| | - Victoria Moraes Giolo
- Department of Plant Protection, Rural Engineering and Soils, Faculty of Engineering, São Paulo State University—UNESP-FEIS, Ilha Solteira 15385-000, SP, Brazil; (A.J.); (L.S.V.); (V.M.G.); (T.J.S.S.O.); (G.C.F.)
| | - Thaissa Julyanne Soares Sena Oliveira
- Department of Plant Protection, Rural Engineering and Soils, Faculty of Engineering, São Paulo State University—UNESP-FEIS, Ilha Solteira 15385-000, SP, Brazil; (A.J.); (L.S.V.); (V.M.G.); (T.J.S.S.O.); (G.C.F.)
| | - Jailson Vieira Aguilar
- Department of Biology and Zootechny, Faculty of Engineering, São Paulo State University—UNESP-FEIS, Ilha Solteira 15385-000, SP, Brazil; (J.V.A.); (L.S.d.C.); (M.R.B.)
| | - Liliane Santos de Camargos
- Department of Biology and Zootechny, Faculty of Engineering, São Paulo State University—UNESP-FEIS, Ilha Solteira 15385-000, SP, Brazil; (J.V.A.); (L.S.d.C.); (M.R.B.)
| | - Matheus Ribeiro Brambilla
- Department of Biology and Zootechny, Faculty of Engineering, São Paulo State University—UNESP-FEIS, Ilha Solteira 15385-000, SP, Brazil; (J.V.A.); (L.S.d.C.); (M.R.B.)
| | - Guilherme Carlos Fernandes
- Department of Plant Protection, Rural Engineering and Soils, Faculty of Engineering, São Paulo State University—UNESP-FEIS, Ilha Solteira 15385-000, SP, Brazil; (A.J.); (L.S.V.); (V.M.G.); (T.J.S.S.O.); (G.C.F.)
| | - Pablo Forlan Vargas
- Tropical Root and Starches Center (CERAT), Faculty of Agricultural Science, São Paulo State University—UNESP-FCA, Botucatu 18610-034, SP, Brazil;
| | - Tiago Zoz
- Unit of Mundo Novo, Department of Crop Science, State University of Mato Grosso do Sul—UEMS, Mundo Novo 79980-000, MS, Brazil;
| | - Marcelo Carvalho Minhoto Teixeira Filho
- Department of Plant Protection, Rural Engineering and Soils, Faculty of Engineering, São Paulo State University—UNESP-FEIS, Ilha Solteira 15385-000, SP, Brazil; (A.J.); (L.S.V.); (V.M.G.); (T.J.S.S.O.); (G.C.F.)
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da Silva MB, Bomfim NCP, da Silva VN, de Lima Frachia C, de Souza LA, Justino GC, de Camargos LS. Response of Cajanus cajan to excess copper in the soil: tolerance and biomass production. Physiol Mol Biol Plants 2022; 28:1335-1345. [PMID: 35910437 PMCID: PMC9334507 DOI: 10.1007/s12298-022-01203-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 06/20/2022] [Accepted: 06/25/2022] [Indexed: 06/03/2023]
Abstract
Soil contamination by excess heavy metals or trace elements is a global concern, as these elements are highly bioaccumulated in living organisms, migrating throughout the food chain, and causing health problems. Sustainable technologies, using plants, have been increasingly studied and used to contain, reduce, or extract these elements from the soil. In this sense, it is essential to identify plant species that tolerate certain elements, present high biomass production and are resistant to adverse soil conditions. For this reason, we evaluated the biomass production and tolerance of Cajanus cajan in response to different concentrations of copper (30, 60, 120, and 240 mg/dm3, in addition to the control treatment) in the soil, as well as the effect of this metal on photosynthetic pigments and gas exchange. C. cajan was sown in soil previously contaminated with copper sulfate and cultivated in a greenhouse for 60 days after emergence. C. cajan is copper tolerant, approximately 88% copper is accumulated in the roots and therefore there is low copper translocation to the shoot, consequently, the chlorophyll content, the net photosynthesis rate, carbon assimilation, dry biomass, the root system development, and nodulation were not affected by copper. C. cajan can be explored in strategies to improve soil conditions and is a promising species in soil phytoremediation studies. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-022-01203-6.
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Affiliation(s)
- Mariana Bocchi da Silva
- Universidade Estadual Paulista “Júlio de Mesquita Filho”, Campus de Ilha Solteira, Ilha Solteira, SP Brazil
| | | | - Victor Navarro da Silva
- Universidade Estadual Paulista “Júlio de Mesquita Filho”, Campus de Ilha Solteira, Ilha Solteira, SP Brazil
| | - Caroline de Lima Frachia
- Universidade Estadual Paulista “Júlio de Mesquita Filho”, Campus de Ilha Solteira, Ilha Solteira, SP Brazil
| | | | | | - Liliane Santos de Camargos
- Universidade Estadual Paulista “Júlio de Mesquita Filho”, Campus de Ilha Solteira, Ilha Solteira, SP Brazil
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Frachia CDL, Silva VND, Paiva WDSD, Barbosa ICF, Silva MBD, Souza LA, Justino GC, Camargos LSD. Inga uruguensis response to lead: effects on growth and nitrogenous compounds. Rodriguésia 2022. [DOI: 10.1590/2175-7860202273063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Lead (Pb) is a heavy metal considered one of the major soil pollutants. Phytoremediation is a sustainable and economically viable biological method for reducing Pb content in the environment. Inga uruguensis is a tree legume species that has characteristics favorable to phytoremediation, such as rapid growth and high biomass production. The objective of this work was an initial evaluation of tolerance and phytoremediation potential of I. uruguensis to Pb. The experiment was carried out in a greenhouse. In addition to the control, soil contamination was carried out with the following Pb doses: 100, 200, 300, 400, and 500 mg.dm³, with 5 repetitions in each treatment, totaling 30 vases. We assessed growth, number and mass of nodules, chlorophyll content, ureids, amino acid, protein and soluble carbohydrates in leaves, roots and nodules, tolerance index, dry matter, and tissues Pb content of I. uruguensis. The data were analyzed by the Tukey test using R and SISVAR software. There was no negative effect of Pb in soil on I. uruguensis growth, the symbiotic relationship with rhizobia was kept, even at high Pb content and the tolerance index was not lower than 0.69. Inga uruguensis has initial tolerance and potential to be used as phytoremediation in soils contaminated by Pb.
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Freire FCDJ, Silva-Pinheiro JD, Santos JS, Silva AGLD, Camargos LSD, Endres L, Justino GC. Proline and antioxidant enzymes protect Tabebuia aurea (Bignoniaceae) from transitory water deficiency. Rodriguésia 2022. [DOI: 10.1590/2175-7860202273031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Water deficiency is a major abiotic stress that limits biomass production and drives plant species distributions. We evaluate the effects of water deficiency on ecophysiological and biochemical parameters of seedlings of Tabebuia aurea. Plants were subjected to daily watering (control) and to stress by soil water deficiency for 29 days. Leaf area, plant biomass, gas exchange, SPAD index, maximum quantum yield (Fv / Fm), quantum yield of PSII (ΦPSII), superoxide dismutase (SOD) and L-ascorbate peroxidase (APX) activity, lipid peroxidation, and proline content were recorded. Plants responded to water deficit by reducing leaf area and accumulating proline. Stomatal conductance was reduced to limit the water loss by transpiration. However, limiting CO2 uptake caused reduction in photosynthesis and biomass. The excess of energy unutilized by photosynthesis reduced SPAD index and ΦPSII. As a result, we observed an increase in SOD and APX activity, protecting chloroplast membranes from further damages caused by lipid peroxidation. Our results indicate that T. aurea have capacity to survive under water deficiency reducing stomatal aperture, but affecting the rate of CO2 assimilation. Nevertheless, plants showed mechanisms to preventing damages to the photosynthetic apparatus. Such plasticity is an important adaptation for plants growing in dry environmental.
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Aguilar JV, Lapaz ADM, Sanches CV, Yoshida CHP, Camargos LSD, Furlani-Júnior E. Application of 2,4-D hormetic dose associated with the supply of nitrogen and nickel on cotton plants. J Environ Sci Health B 2021; 56:852-859. [PMID: 34405759 DOI: 10.1080/03601234.2021.1966280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Growth traits, yield, N content, photosynthetic pigments, ammonia and amino acids were measured to verify the effect of the interaction between N, Ni, and 2,4-D applied in the cotton crop. The objective was to study the hormonal effect of 2,4-D associated with the application of N and Ni in coverage to improve yield. The N (0, 40, 80, and 120 kg ha-1) and Ni(0, 300, 450, and 600 g ha-1) were applied to the soil in the square phenological growth stage. The commercial 2,4-D DMA® BR (0 and 1.8 g a.e ha-1) was applied to the leaves at the same growth stage. The supply of N in cover fertilization up to 120 kg ha-1 was beneficial for cotton, providing greater yield and content of photosynthetic pigments. The application of 2,4-D in a hormetic dose, as a synthetic auxin during the beginning of flowering, proved to be a promising technique to improve cotton yield. This end-of-cycle response is related to the requirement for auxins during the cotton fruiting process.
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Lapaz ADM, de Camargos LS, Yoshida CHP, Firmino AC, de Figueiredo PAM, Aguilar JV, Nicolai AB, Silva de Paiva WD, Cruz VH, Tomaz RS. Response of soybean to soil waterlogging associated with iron excess in the reproductive stage. Physiol Mol Biol Plants 2020; 26:1635-1648. [PMID: 32801492 PMCID: PMC7415068 DOI: 10.1007/s12298-020-00845-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 05/23/2020] [Accepted: 06/27/2020] [Indexed: 06/11/2023]
Abstract
Soil waterlogging is a common problem in some agricultural areas, including regions under soybean (Glycine max) cultivation. In waterlogged soils, soil O2 depletion occurs due to aerobic microorganisms and plants, affecting the metabolic and physiological processes of plants after suffering anoxia in their root tissue. Another harmful factor in this situation is the exponential increase in the availability of iron (Fe) in the soil, which may result in absorption of excess Fe. The present study sought to evaluate the response mechanisms in soybean leaves 'Agroeste 3680' by physiological and biochemical analyses associating them with the development of pods in non-waterlogged and waterlogged soil, combined with one moderate and two toxic levels of Fe. Gas exchange was strongly affected by soil waterlogging. Excess Fe without soil waterlogging reduced photosynthetic pigments, and potentiated this reduction when associated with soil waterlogging. Starch and ureide accumulation in the first newly expanded trifoliate leaves proved to be response mechanisms induced by soil waterlogging and excess Fe, since plants cultivated under soil non-waterlogged soil at 25 mg dm-3 Fe showed lower contents when compared to stressed plants. Thus, starch and ureide accumulation could be considered efficient biomarkers of phytotoxicity caused by soil waterlogging and excess Fe in soybean plants. The reproductive development was abruptly interrupted by the imposition of stresses, leading to a loss of pod dry biomass, which was largely due to the substantial decrease in the net photosynthetic rate, as expressed by area (A), the blockage of carbohydrate transport to sink tissues and an increase of malondialdehyde (MDA). The negative effect on reproductive development was more pronounced under waterlogged soil.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Victor Hugo Cruz
- São Paulo State University (UNESP), Dracena, SP 17900-000 Brazil
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