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Dutra FB, Almeida LS, Pinto GCV, Furlaneto LF, Souza TKS, Viveiros E, Piotrowski I, Piña-Rodrigues FCM, Silva JMS. Pre-emergent indaziflam can enhance forest seed germination in direct seeding? BRAZ J BIOL 2023; 83:e268716. [PMID: 37042910 DOI: 10.1590/1519-6984.268716] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 03/06/2023] [Indexed: 04/13/2023] Open
Abstract
Pre-emergent herbicides can contribute to the control of weed competition in direct seeding restoration, however it is necessary to evaluate their effects on seeds of native tropical forest species. The aim of the study was to assess the potential impact of the herbicide indaziflam on the germination of 17 forest species. For this, a dosage of 180 mL of the product in 200L of water was compared to the control without herbicide. The degree of sensitivity of each species was calculated by a ratio between the percentage of germination with herbicide (GH) and the control without herbicide (GC) classifying them as: extremely sensitive (ES= (GH/GC) <0.25), sensitive (S=0.25< (GH/GC) <0.50), low sensitivity (LS=0.50< (GH/GC) <0.75), indifferent (I=0.75< (GH/GC) <1.0) and potentiated (P= (GH/GC) >1). The herbicide promoted a significant reduction in mean germination in 35% (n=6) of the species and 59% (n = 10) were sensitive or extremely sensitive to indaziflam, and only three did not germinate. On the other hand, 29.4% (n=5) showed low sensitivity or indifference to the herbicide, while seed germination was slightly increased by indaziflam to 11.7% (n=2). Pre-emergent indaziflam can be recommended in direct seeding restoration, as only 17.6% (n=3) of the species were inhibited by pre-emergent. However, the effect of indaziflam varies by species and requires further studies to support large-scale use in direct seeding.
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Affiliation(s)
- F B Dutra
- Universidade Federal de São Carlos - UFSCar, Programa de Pós-graduação em Planejamento e Uso de Recursos Renováveis, Sorocaba, SP, Brasil
| | - L S Almeida
- Universidade Federal de Viçosa - UFV, Departamento de Engenharia Florestal, Viçosa, MG, Brasil
| | - G C V Pinto
- Universidade Federal de São Carlos - UFSCar, Graduação em Engenharia Florestal, Sorocaba, SP, Brasil
| | - L F Furlaneto
- Universidade Federal de São Carlos - UFSCar, Graduação em Engenharia Florestal, Sorocaba, SP, Brasil
| | - T K S Souza
- Universidade Federal de São Carlos - UFSCar, Graduação em Engenharia Florestal, Sorocaba, SP, Brasil
| | - E Viveiros
- Universidade Federal de São Carlos - UFSCar, Programa de Pós-graduação em Planejamento e Uso de Recursos Renováveis, Sorocaba, SP, Brasil
- AES Brasil, Bauru, SP, Brasil
| | - I Piotrowski
- Universidade Federal de São Carlos - UFSCar, Departamento de Ciências Ambientais, Sorocaba, SP, Brasil
| | - F C M Piña-Rodrigues
- Universidade Federal de São Carlos - UFSCar, Departamento de Ciências Ambientais, Sorocaba, SP, Brasil
| | - J M S Silva
- Universidade Federal de São Carlos - UFSCar, Departamento de Ciências Ambientais, Sorocaba, SP, Brasil
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Virgilio LR, Teixeira GO, Almeida LS, Melo HPS, Júnior SLP, Meneguetti DUO, Camargo LMA, Takemoto RM. Infection with Trypanosoma spp. in Platydoras armatulus (Siluriformes, Doradidae), in southwestern Amazon, Brazil. J Parasit Dis 2022; 46:607-612. [PMID: 36091272 PMCID: PMC9458826 DOI: 10.1007/s12639-022-01485-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 03/22/2021] [Accepted: 03/13/2022] [Indexed: 10/18/2022] Open
Abstract
Trypanosoma is a hemoflagellate capable of infecting a wide variety of invertebrates and vertebrates, such as Neotropical freshwater fish. The present study described and morphologically compared Trypanosoma spp., found in Platydoras armatulus, Valenciennes, 1840, in southwestern Amazon. Fish specimens were sampled in Ipixuna and Juruá rivers located in the states of Amazonas and Acre, Brazil. Fish blood samples were taken by cardiac puncture, and smears were prepared for quantification, morphometric measurements, and morphotyping (characterization of the trypanosomes according to their morphological variations) of trypanosomes found. Prevalence, mean abundance, and intensity of parasitism were estimated in the parasitized fish specimens. Five fish specimens were collected, showing a 100% prevalence of parasites in the host. We found two Trypanosoma morphotypes, A and B, in which A had the highest infection intensity in host specimens. Thus, the present study presented the first report of Trypanosoma parasitizing P. armatulus, with different morphological variations.
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Affiliation(s)
- L. R. Virgilio
- Graduate Program in Biodiversity and Biotechnology (Bionorte), Federal University of Acre (UFAC), Rio Branco, Acre Brazil
- Laboratory of Aquatic Ecology, Multidisciplinary Center, Federal University of Acre, Campus Floresta, Estrada do Canela Fina, Km 12, Gleba Formoso, Lote 245, Colônia São Francisco, Cruzeiro do Sul, Acre CEP 69980-00 Brazil
| | - G. O. Teixeira
- Laboratory of Aquatic Ecology, Multidisciplinary Center, Federal University of Acre, Campus Floresta, Estrada do Canela Fina, Km 12, Gleba Formoso, Lote 245, Colônia São Francisco, Cruzeiro do Sul, Acre CEP 69980-00 Brazil
| | - L. S. Almeida
- Laboratory of Aquatic Ecology, Multidisciplinary Center, Federal University of Acre, Campus Floresta, Estrada do Canela Fina, Km 12, Gleba Formoso, Lote 245, Colônia São Francisco, Cruzeiro do Sul, Acre CEP 69980-00 Brazil
| | - H. P. S. Melo
- Laboratory of Aquatic Ecology, Multidisciplinary Center, Federal University of Acre, Campus Floresta, Estrada do Canela Fina, Km 12, Gleba Formoso, Lote 245, Colônia São Francisco, Cruzeiro do Sul, Acre CEP 69980-00 Brazil
| | - S. L. Prolo Júnior
- Laboratory of Aquatic Ecology, Multidisciplinary Center, Federal University of Acre, Campus Floresta, Estrada do Canela Fina, Km 12, Gleba Formoso, Lote 245, Colônia São Francisco, Cruzeiro do Sul, Acre CEP 69980-00 Brazil
| | - D. U. O. Meneguetti
- Graduate Program in Biodiversity and Biotechnology (Bionorte), Federal University of Acre (UFAC), Rio Branco, Acre Brazil
- Federal University of Acre, College of Application, Av. Getúlio Vargas, 654 - Downtown, Rio Branco, Acre 69900-150 Brazil
| | - L. M. A. Camargo
- Federal University of Acre, College of Application, Av. Getúlio Vargas, 654 - Downtown, Rio Branco, Acre 69900-150 Brazil
- University of São Paulo, Institute of Biomedical Sciences., R. Francisco Prestes, 2728, Monte Negro, Rondonia CEP 76888-000 Brazil
| | - R. M. Takemoto
- State University of Maringá, Av. Colombo, 5790 – Jandaia do Sul, University, Maringá, Paraná CEP 87020-900 Brazil
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Almeida LS, Santos AO, Martins GH, Eloy L, Lima ML, Etchebehere E. 18F-FDG PET/CT images defined the true extent of a urothelial bladder carcinoma. Urol Case Rep 2020; 33:101289. [PMID: 32528854 PMCID: PMC7276442 DOI: 10.1016/j.eucr.2020.101289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 11/27/2022] Open
Abstract
A patient was referred, after neoadjuvant chemotherapy, for pre-surgical evaluation of urothelial bladder carcinoma (single lesion). Two thickenings in the left ureter wall identified on the CT scan were equivocal for malignancy. 18F-FDG PET/CT with delayed pelvic images, hyperhydration, and furosemide showed hypermetabolic ureteral metastases and multifocal bladder tumors. There were no lymph nodes or distant metastases. These 18F-FDG PET/CT findings completely altered the surgical treatment. The patient underwent left nephroureterectomy, radical cystoprostatectomy, and lymphadenectomy, followed by a urinary transit reconstruction. Histopathology confirmed multifocal high-grade urothelial carcinoma in the bladder walls and left ureter and benign lymph nodes.
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Affiliation(s)
- L S Almeida
- Division of Nuclear Medicine, Department of Radiology, Campinas State University (UNICAMP), Campinas, Brazil
| | - A O Santos
- Division of Nuclear Medicine, Department of Radiology, Campinas State University (UNICAMP), Campinas, Brazil
| | - G H Martins
- Division of Nuclear Medicine, Department of Radiology, Campinas State University (UNICAMP), Campinas, Brazil
| | - L Eloy
- Department of Pathology, Campinas State University (UNICAMP), Campinas, Brazil
| | - M L Lima
- Division of Urology, Department of Surgery, Campinas State University (UNICAMP), Campinas, Brazil
| | - E Etchebehere
- Division of Nuclear Medicine, Department of Radiology, Campinas State University (UNICAMP), Campinas, Brazil
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Almeida LS, Vilarinho L, Darmin PS, Rosenberg EH, Martinez-Muñoz C, Jakobs C, Salomons GS. A prevalent pathogenic GAMT mutation (c.59G>C) in Portugal. Mol Genet Metab 2007; 91:1-6. [PMID: 17336114 DOI: 10.1016/j.ymgme.2007.01.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2006] [Revised: 01/09/2007] [Accepted: 01/10/2007] [Indexed: 11/17/2022]
Abstract
Guanidinoacetate methyltransferase (GAMT) deficiency (MIM 601240), an autosomal recessive disorder of creatine biosynthesis, presents with mental retardation, extrapyramidal symptoms, autistic-like behavior and epilepsy. Other hallmarks are cerebral creatine deficiency, increased levels of guanidinoacetate in body fluids and mutations in the GAMT gene. Creatine supplementation partially restores cerebral creatine content. Worldwide, 29 patients have been identified and 15 different mutations have been reported in the GAMT gene. Ten out of these 29 patients are of Portuguese origin. Likely, a founder effect and a high carrier rate in Portugal exist, since in 17 out of the 20 Portuguese alleles the c.59G>C; p.Trp20Ser mutation was found. We investigated the carrier rate of the c.59G>C; p.Trp20Ser mutation in different regions of Portugal and confirmed the pathogenic nature of this missense mutation by transient transfections. Anonymous bloodspots (1002) were screened for the presence of the c.59G>C; p.Trp20Ser mutation by SNaPshot (Single Nucleotide Polymorphism Multiplex Kit). Eight carriers of c.59G>C; p.Trp20Ser were detected of which four are derived from the Archipelagos. This suggests that the carrier rate of the c.59G>C; p.Trp20Ser mutation is relatively high in these islands, as well as in other parts of Portugal. It also implies that newborn screening in these regions is warranted for this treatable disorder.
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Affiliation(s)
- L S Almeida
- Department of Clinical Chemistry, Metabolic Unit, VU University Medical Center, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands
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Almeida LS, Rosenberg EH, Martinez-Muñoz C, Verhoeven NM, Vilarinho L, Jakobs C, Salomons GS. Overexpression of GAMT restores GAMT activity in primary GAMT-deficient fibroblasts. Mol Genet Metab 2006; 89:392-4. [PMID: 16899382 DOI: 10.1016/j.ymgme.2006.06.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2006] [Revised: 06/15/2006] [Accepted: 06/15/2006] [Indexed: 10/24/2022]
Abstract
Guanidinoacetate methyltransferase deficiency (MIM 601240) is an autosomal recessive disorder of creatine biosynthesis. Patients present with mental retardation, extrapyramidal symptoms, autistic-like behavior, epilepsy, cerebral creatine deficiency and increased levels of guanidinoacetate. So far 15 mutations have been reported, including six missense variants that are highly likely to be pathogenic mutations. To prove that mutations in the GAMT gene are responsible for GAMT deficiency we overexpressed the GAMT open reading frame in GAMT-deficient fibroblasts by stable transfection. In addition, HeLa cells were transiently transfected with the same expression vector. In contrast to mock transfectants transfection of primary GAMT-deficient fibroblasts with wild-type GAMT results in the restoration of GAMT activity as measured by GC-MS using stable isotope labeled substrates. Moreover, the expression of the GAMT-EGFP fusion protein was analyzed by Western blot, confirming the presence of GAMT fusion protein, both in the stable as well as in the transient transfectants. Here, we prove that mutations in the GAMT gene are responsible for GAMT deficiency, since overexpression of the GAMT open reading frame restores GAMT activity in GAMT-deficient fibroblasts. Furthermore, the transient transfection of HeLa cells will be important for functional analysis of variants of unknown consequence (i.e., missense mutations).
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Affiliation(s)
- L S Almeida
- Department of Clinical Chemistry, Metabolic Unit, VU University Medical Center, Amsterdam, The Netherlands
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