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Martins M, Soares C, Figueiredo I, Sousa B, Torres AC, Sousa-Pinto I, Veiga P, Rubal M, Fidalgo F. Fucoid Macroalgae Have Distinct Physiological Mechanisms to Face Emersion and Submersion Periods in Their Southern Limit of Distribution. Plants (Basel) 2021; 10:plants10091892. [PMID: 34579433 PMCID: PMC8467972 DOI: 10.3390/plants10091892] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/26/2021] [Accepted: 09/09/2021] [Indexed: 11/30/2022]
Abstract
During high tide, macroalgae are submersed, facing adequate environmental conditions, however, at low tide, these species can be exposed to high UV radiation and desiccation, leading to an overproduction of reactive oxygen species, causing oxidative stress. Since intertidal organisms present differential sensitivity to abiotic fluctuations, this study aimed to evaluate the physiological responses [photosynthetic pigments, hydrogen peroxide (H2O2), lipid peroxidation (LP), and thiols and proline] of three macroalgae, from different intertidal levels, towards tidal regimes. Samples of Pelvetia canaliculata, Ascophyllum nodosum, and Fucus serratus were collected from beaches located on the southern limit of distribution in periods of potential stress (Summer and Spring), under low and high tide. The photosynthetic pigments of P. canaliculata and F. serratus were generally higher during low tide, and the oxidative damage evidenced by H2O2 and LP increased in the Summer, while A. nodosum showed greater oxidative damage in the Spring. While thiol content did not change, proline levels were species- and tidal-specific among sampling dates. P. canaliculata presented higher resilience to unfavorable conditions, while F. serratus was the most sensitive species. The physiological responses analyzed were species-specific, pointing to the high susceptibility of low intertidal organisms to expected extreme climatic events.
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Affiliation(s)
- Maria Martins
- GreenUPorto—Sustainable Agrifood Production Research Centre and INOV4AGRO, Biology Department, Faculty of Sciences University of Porto (FCUP), Rua do Campo Alegre, 4149-007 Porto, Portugal; (B.S.); (F.F.)
- Correspondence:
| | - Cristiano Soares
- Biology Department, Faculty of Sciences University of Porto (FCUP), Rua do Campo Alegre, 4149-007 Porto, Portugal; (C.S.); (I.F.)
| | - Inês Figueiredo
- Biology Department, Faculty of Sciences University of Porto (FCUP), Rua do Campo Alegre, 4149-007 Porto, Portugal; (C.S.); (I.F.)
| | - Bruno Sousa
- GreenUPorto—Sustainable Agrifood Production Research Centre and INOV4AGRO, Biology Department, Faculty of Sciences University of Porto (FCUP), Rua do Campo Alegre, 4149-007 Porto, Portugal; (B.S.); (F.F.)
| | - Ana Catarina Torres
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, 4450-208 Matosinhos, Portugal; (A.C.T.); (I.S.-P.); (P.V.); (M.R.)
| | - Isabel Sousa-Pinto
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, 4450-208 Matosinhos, Portugal; (A.C.T.); (I.S.-P.); (P.V.); (M.R.)
| | - Puri Veiga
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, 4450-208 Matosinhos, Portugal; (A.C.T.); (I.S.-P.); (P.V.); (M.R.)
| | - Marcos Rubal
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, 4450-208 Matosinhos, Portugal; (A.C.T.); (I.S.-P.); (P.V.); (M.R.)
| | - Fernanda Fidalgo
- GreenUPorto—Sustainable Agrifood Production Research Centre and INOV4AGRO, Biology Department, Faculty of Sciences University of Porto (FCUP), Rua do Campo Alegre, 4149-007 Porto, Portugal; (B.S.); (F.F.)
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Veiga P, Torres AC, Aneiros F, Sousa-Pinto I, Troncoso JS, Rubal M. Consistent patterns of variation in macrobenthic assemblages and environmental variables over multiple spatial scales using taxonomic and functional approaches. Mar Environ Res 2016; 120:191-201. [PMID: 27591515 DOI: 10.1016/j.marenvres.2016.08.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 08/17/2016] [Accepted: 08/23/2016] [Indexed: 06/06/2023]
Abstract
Spatial variability of environmental factors and macrobenthos, using species and functional groups, was examined over the same scales (100s of cm to >100 km) in intertidal sediments of two transitional water systems. The objectives were to test if functional groups were a good species surrogate and explore the relationship between environmental variables and macrobenthos. Environmental variables, diversity and the multivariate assemblage structure showed the highest variability at the scale of 10s of km. However, abundance was more variable at 10s of m. Consistent patterns were achieved using species and functional groups therefore, these may be a good species surrogate. Total carbon, salinity and silt/clay were the strongest correlated with macrobenthic assemblages. Results are valuable for design and interpretation of future monitoring programs including detection of anthropogenic disturbances in transitional systems and propose improvements in environmental variable sampling to refine the assessment of their relationship with biological data across spatial scales.
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Affiliation(s)
- Puri Veiga
- Laboratory of Coastal Biodiversity, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Rua dos Bragas 289, P 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n 4150-181 Porto, Portugal; Estación de Bioloxía Mariña da Graña, Universidade de Santiago de Compostela, Casa do Hórreo, Rúa da Ribeira 1, 15590, A Graña, Ferrol, Spain.
| | - Ana Catarina Torres
- Laboratory of Coastal Biodiversity, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Rua dos Bragas 289, P 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n 4150-181 Porto, Portugal
| | - Fernando Aneiros
- Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar, Universidade de Vigo, Campus Universitario Lagoas-Marcosende, 36310 Vigo, Spain; ECIMAT, Estación de Ciencias Mariñas de Toralla, Universidade de Vigo, Illa de Toralla, 36331 Vigo, Spain
| | - Isabel Sousa-Pinto
- Laboratory of Coastal Biodiversity, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Rua dos Bragas 289, P 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n 4150-181 Porto, Portugal
| | - Jesús S Troncoso
- Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar, Universidade de Vigo, Campus Universitario Lagoas-Marcosende, 36310 Vigo, Spain; ECIMAT, Estación de Ciencias Mariñas de Toralla, Universidade de Vigo, Illa de Toralla, 36331 Vigo, Spain
| | - Marcos Rubal
- Laboratory of Coastal Biodiversity, Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Rua dos Bragas 289, P 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n 4150-181 Porto, Portugal; Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar, Universidade de Vigo, Campus Universitario Lagoas-Marcosende, 36310 Vigo, Spain
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Veiga P, Torres AC, Rubal M, Troncoso J, Sousa-Pinto I. The invasive kelp Undaria pinnatifida (Laminariales, Ochrophyta) along the north coast of Portugal: distribution model versus field observations. Mar Pollut Bull 2014; 84:363-5. [PMID: 24910185 DOI: 10.1016/j.marpolbul.2014.05.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/08/2014] [Accepted: 05/14/2014] [Indexed: 06/03/2023]
Abstract
After the first report of Undaria pinnatifida in north Portugal (between 1999 and 2007), a rapid spread of this species could be expected due to the presence of a stable population and the favourable environmental conditions proposed by distribution models. However, field surveys showed that U. pinnatifida was not present in most of the rocky shores in north Portugal. It seems that U. pinnatifida cannot outcompete native species outside of marinas in north Portugal. The only population in natural rocky shores was found in Buarcos, where this species was frequent. This study provides density data of U. pinnatifida that will be useful in the future to monitor changes on its abundance and distribution in the centre and south of Portugal.
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Affiliation(s)
- P Veiga
- CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Via Panoramica 36, 4150-564 Porto, Portugal.
| | - A C Torres
- CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Via Panoramica 36, 4150-564 Porto, Portugal
| | - M Rubal
- CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Via Panoramica 36, 4150-564 Porto, Portugal; Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Campus de As Lagoas, 36310 Vigo, Spain
| | - J Troncoso
- Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Campus de As Lagoas, 36310 Vigo, Spain
| | - I Sousa-Pinto
- CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Via Panoramica 36, 4150-564 Porto, Portugal
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Santos MDM, Buso GCS, Torres AC. Evaluation of genetic variability in micropropagated propagules of ornamental pineapple [Ananas comosus var. bracteatus (Lindley) Coppens and Leal] using RAPD markers. Genet Mol Res 2008; 7:1097-105. [PMID: 19048488 DOI: 10.4238/vol7-4gmr489] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The objective of the present study was to evaluate the genetic variability in micropropagated plantlets of ornamental pineapple, after the fourth period of subculture. The basal culture medium consisted of MS salts, vitamins, 3% sucrose, liquid formulation, supplemented with 6-benzylaminopurine (BAP) at concentrations of 0.125, 0.25, 0.5, 1.0, and 2.0 mg/L. The addition of BAP influenced the occurrence of genetic variation revealed using random amplified polymorphic DNA (RAPD) markers. Of a total of 520 primers tested, 44 were selected and amplified; 402 monomorphic bands (97.2%) and 18 polymorphic bands (2.8%) resulted among regenerated plantlets. The polymorphic fragments were produced by 12 primers (OPA-01, OPA-20, OPB-01, OPB-19, OPC-19, OPF-13, OPL-17, OPM-13, OPP-16, OPT-07, OPV-19, and OPX-03). Among the primers that identified polymorphism, OPA-01, OPA-20, OPB-19, OPC-19, OPL-17, OPP-16, and OPX-3 each showed, one polymorphic band and OPF-13 amplified a maximum of three bands. In this study, the RAPD technique was effective in showing the occurrence of somaclonal variations that occur during the micropropagation process of ornamental pineapple cultivation in BAP-supplemented medium, and it is possible to detect the presence of genetic variation in early stages of plant development.
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Affiliation(s)
- M D M Santos
- Departamento de Botânica, Universidade de Brasília, Brasília, DF, Brasil
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Buso GSC, Paiva MR, Torres AC, Resende FV, Ferreira MA, Buso JA, Dusi AN. Genetic diversity studies of Brazilian garlic cultivars and quality control of garlic-clover production. Genet Mol Res 2008; 7:534-41. [PMID: 18752178 DOI: 10.4238/vol7-2gmr451] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The garlic cultivars grown in Brazil evolved from somatic mutations and clone selection by breeding programs and by the introduction of germplasm from other countries. Morphological characters have been used to differentiate these cultivars. Two hundred and six random amplified polymorphic DNA markers were utilized for a diversity analysis of the 17 most planted garlic cultivars in Brazil. Bootstrap analysis showed that the number of markers was efficient and sufficient to obtain a coefficient of variation of 10%. Similarity varied between 16 and 98% and cluster analysis showed that, in general, genetic similarities correlate with morphological characters of the cultivars and production cycle variation. High bootstrap values at most of the nodes supported the dendrogram stability. The grouping of most varieties agreed well with previous reports based on morphological characters. As a vegetative-propagated species, viral diseases are a key problem regarding production and quality of the bulbs, causing gradual loss of yield and decrease in storage capacity. To improve the health quality of garlic seed, a virus-free stock of garlic cloves of the Amarante cultivar was obtained. The ability to distinguish garlic cultivars to detect varietal mixing after in vitro multiplication is extremely important, since correct identification is not possible until bulbs are produced. Random amplified polymorphic DNA markers were also used to differentiate cultivars while they are in vitro and not amenable to morphological discrimination. No difference was identified between the fingerprints of the virus-free or of the infected bulks of Amarante, showing that there was no clove mixing in the handling of material in the clonal multiplication phase.
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Affiliation(s)
- G S C Buso
- Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, Brasil.
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Nóbrega AC, Rodrigues B, Torres AC, Scarpel RD, Neves CA, Melo A. Is drooling secondary to a swallowing disorder in patients with Parkinson's disease? Parkinsonism Relat Disord 2007; 14:243-5. [PMID: 17892967 DOI: 10.1016/j.parkreldis.2007.08.003] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [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: 11/15/2006] [Revised: 07/28/2007] [Accepted: 08/03/2007] [Indexed: 12/16/2022]
Abstract
Drooling is a common manifestation in Parkinson's disease (PD). It causes psychosocial difficulties and can result in aspiration and chest infection. Previous studies point to an association between swallowing problems and sialorrhea. The aim of this study was to determine if drooling is associated with dysphagia in PD patients. Sixteen PD patients with diurnal drooling were assessed using a modified barium swallowing with videofluoroscopy, and a drooling score. Changes in the oral stage of swallowing were seen in 100% of the patients; and in the pharyngeal stage, in 94% of the patients. The results showed a correlation between the drooling scale score and the level of dysphagia (-0.426; p<0.05). Patients with the worst dysphagia had the worst drooling.
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Affiliation(s)
- Ana Caline Nóbrega
- Division of Neurology and Epidemiology, Federal University of Bahia, Brazil
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Nóbrega AC, Rodrigues B, Torres AC, Enzo A, Melo A. Does botulinum toxin decrease frequency and severity of sialorrhea in Parkinson's disease? J Neurol Sci 2007; 253:85-7. [PMID: 17229441 DOI: 10.1016/j.jns.2006.11.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2006] [Revised: 10/17/2006] [Accepted: 11/22/2006] [Indexed: 11/18/2022]
Abstract
This study analysed if botulinum toxin type A (BTX-A) decreases drooling in 21 Parkinson's disease patients. BTX-A injections were given in the parotid glands. The severity of drooling decreased in 18 (86%) patients, while frequency was reduced in 8 (38%). In 11(52%) patients, the frequency of drooling remained constant, which may reflect more difficulties in swallowing, compared to the group that presented such improvement. Future trials assessing the level of swallowing dysfunction may be important to establish a prognosis for patients who keep the frequency of drooling in spite of decreased severity after BTX injection.
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Affiliation(s)
- Ana Caline Nóbrega
- Division of Neurology and Epidemiology, Federal University of Bahia, Brazil
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Abstract
Extensive calcification of the heart, involving predominantly the right ventricle and interventricular septum, was observed in a 3-h-old baby. The aetiology of the condition was attributed to infection by Toxoplasma gondii, based on the presence of several visceral lesions allied to the identification of the microorganism. The case is reported in view of the rarity of the type of the heart lesion. It is considered that calcification of the myocardium is secondary to vascular, inflammatory or toxic condition. The factors implicated in the pathogenesis of this unusual myocardial lesion are discussed.
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