Acta Brasiliensis最新文献_第2页

Evaluation of the toxicity, cytotoxicity and antibacterial activity of Tibouchina papyrus (Pohl) Toledo (Melastomataceae) 纸莎草(Pohl) Toledo的毒性、细胞毒性和抗菌活性评价

IF 0.4

Acta Brasiliensis Pub Date : 2022-09-30 DOI: 10.22571/2526-4338621

Danielle Coelho Da Cruz, Antônio Carlos Severo Menezes, Gracielle Oliveira Sabbag Cunha

{"title":"Evaluation of the toxicity, cytotoxicity and antibacterial activity of Tibouchina papyrus (Pohl) Toledo (Melastomataceae)","authors":"Danielle Coelho Da Cruz, Antônio Carlos Severo Menezes, Gracielle Oliveira Sabbag Cunha","doi":"10.22571/2526-4338621","DOIUrl":"https://doi.org/10.22571/2526-4338621","url":null,"abstract":"The objective of this research was to perform a preliminary phytochemical study and investigate the toxicity, cytotoxicity and antibacterial activity of the species Tibouchina papyrus (Melastomataceae). The toxicity test was performed with the extracts against Artemia salina. The cytotoxic study was also performed against the following cell lines: promyelocytic leukemia (HL60), human colon carcinoma (HCT-116), breast carcinoma (MCF-7), prostate carcinoma (PC3), astrocytoma (SNB-19) and non-tumor cells (L929). Last, antibacterial activity was assessed through against Staphylococcus epidermidis (25923), Staphylococcus aureus (12228), Escherichia coli (25312) and Pseudomonas aeruginosa (27853). The phytochemical investigation indicated the presence of these metabolite groups: flavonoids, triterpenes, steroids and tannins. The methanolic extracts showed moderate antibacterial activity against S. aureus, S. epidermidis and P. aeruginosa. T. papyrus extracts showed high cytotoxic activity against promyelocytic leukemia cell lines (80.43 to 93.31%). The other lines did not reveal good activity against the extracts tested.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41823310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Release call of Corythomantis greeningi Boulenger, 1896 (Anura: Hylidae) greeningi Boulenger Corythomantis的释放呼吁，1896年（Anura：Hylidae）

IF 0.4

Acta Brasiliensis Pub Date : 2022-09-30 DOI: 10.22571/2526-4338589

E. Andrade, Lucas Rafael Uchôa

引用次数: 0

Physicochemical characterization, bioactive compounds and antioxidant activity of apis mellifera honey from western paraná state, brazil 巴西西帕兰州蜜皮蜂蜜的理化性质、生物活性化合物和抗氧化活性

IF 0.4

Acta Brasiliensis Pub Date : 2022-09-30 DOI: 10.22571/2526-4338585

R. Ribeiro, R. C. Garcia, Lucas Luan Tonelli, Seliane Roberta Chiamolera, Larissa Paola Favreto, Shirlene Souza Oliveira, S. C. Camargo, Douglas Galhardo

引用次数: 0

Feeding substrate selection is not affected by the soil and environment temperature during the foraging of Constrictotermes cyphergaster 食草基质的选择不受土壤和环境温度的影响

IF 0.4

Acta Brasiliensis Pub Date : 2022-09-30 DOI: 10.22571/2526-4338594

M. Oliveira, Maria do Socorro Lacerda Rolim, Derick Lira, M. A. Bezerra-Gusmão

引用次数: 0

Assemblages of Myxomycetes associated with Cocos nucifera L. trees 与椰子树相关的黏菌群

IF 0.4

Acta Brasiliensis Pub Date : 2022-05-30 DOI: 10.22571/2526-4338587

Camila Estelita Vogeley Alves de Sá, Luiz Gonzaga Biones Ferraz, L. Cavalcanti

{"title":"Assemblages of Myxomycetes associated with Cocos nucifera L. trees","authors":"Camila Estelita Vogeley Alves de Sá, Luiz Gonzaga Biones Ferraz, L. Cavalcanti","doi":"10.22571/2526-4338587","DOIUrl":"https://doi.org/10.22571/2526-4338587","url":null,"abstract":"Arecaceae plants provide favorable microhabitats for the development of myxomycetes, but researches focusing on myxomycetes associated with palm trees are scarce. The myxobiota present on Cocos nucifera L. was evaluated in coconut groves in the municipality of Bonito, Pernambuco, Brazil. The incidence of myxomycetes on coconut palms and substrates and their composition, richness, taxonomic diversity, constancy, abundance, and seasonality of sporulation were analyzed. During direct field collections, inspections were made of the stems, leaf sheaths, inflorescence bracts, and petiole bases of 60 adult individuals. Myxomycetes were present in 80% of the coconut palms and were more abundant during the rainy season (June). A total of 128 specimens were obtained (63% from leaf sheaths, 31% from stems, 4% from petiole bases, and 2% from bracts), representing 14 species, with species/genus ratio = 2.80. Hemitrichia serpula, Physarum decipiens and Diderma effusum characterize the myxobiota. This work presents the first record of Diderma chondrioderma, Didymium clavus, Physarum crateriforme and P. roseum on C. nucifera for Brazil. The ocurrence of Didymium megalosporum in Brazil is confirmed 107 years after its first and only record in ground litter in an undefined location.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43903938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A synopsis of Convolvulaceae from the Upper Turi-Gurupi region in the Amazon of Maranhão, Brazil 巴西马拉尼昂亚马逊Upper Turi-Gurupi地区旋花科植物简介

IF 0.4

Acta Brasiliensis Pub Date : 2022-05-30 DOI: 10.22571/2526-4338574

Regigláucia Rodrigues de Oliveira, G. Silva, M. Pastore, Jeromar Dos Santos Nascimento

{"title":"A synopsis of Convolvulaceae from the Upper Turi-Gurupi region in the Amazon of Maranhão, Brazil","authors":"Regigláucia Rodrigues de Oliveira, G. Silva, M. Pastore, Jeromar Dos Santos Nascimento","doi":"10.22571/2526-4338574","DOIUrl":"https://doi.org/10.22571/2526-4338574","url":null,"abstract":"A synopsis of Convolvulaceae species from the Upper Turi-Gurupi region, a strategic area for the conservation of Amazonian biodiversity in the state of Maranhão, is presented. Field samples and herbarium collections were analyzed to build a list of species, indicating the most representative taxa and providing data on growth habit, geographic distribution, occurrence in Brazilian phytogeographic domains, and distribution in the Upper Turi-Gurupi region. Twenty-one species and nine genera (Aniseia Choisy, Bonamia Thouars, Camonea Raf., Distimake Raf., Evolvulus L., Ipomoea L., Maripa Aubl., Odonellia K.R. Robertson, and Operculina Silva Manso) were recorded. Ipomoea was the most representative genus, with 10 species, and Ipomoea asarifolia was the most collected species. Maripa scandens Aubl. is a new record for the state of Maranhão and in relation to the last taxonomic work of Convolvulaceae in the Amazon, which covered Maranhão, 10 species are new records for the state. A heterogeneous distribution of the species and sampling gaps of Convolvulaceae were observed in the region, pointing to the need for further surveys. This study contributes to the knowledge of this botanical family in the Amazon territory and stimulates the conservation of the Amazonian flora in Maranhão, since the study area is under strong pressure from environmental degradation and is one of the most threatened in terms of biodiversity loss in the Amazon.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48859419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coliforms and antibiotic-resistant bacteria in water from rivers and wells at Curitibanos, Santa Catarina 圣卡塔琳娜Curitibanos河流和水井中的大肠杆菌和抗生素耐药性细菌

IF 0.4

Acta Brasiliensis Pub Date : 2022-05-30 DOI: 10.22571/2526-4338580

Gabrielle França Ribeiro, Natalia Maria Martinazzo Angelo, Júlia Elizabeth Proença, Sonia Purin da Cruz

{"title":"Coliforms and antibiotic-resistant bacteria in water from rivers and wells at Curitibanos, Santa Catarina","authors":"Gabrielle França Ribeiro, Natalia Maria Martinazzo Angelo, Júlia Elizabeth Proença, Sonia Purin da Cruz","doi":"10.22571/2526-4338580","DOIUrl":"https://doi.org/10.22571/2526-4338580","url":null,"abstract":"The quality of water used for human consumption related to the absence of coliforms, which, which may cause diseases and exhibit antimicrobial resistance, a frequent issue in places with poor or non-existent environmental sanitation. The present study evaluated the concentrations of total and thermotolerant coliforms in rivers and wells in Curitibanos (SC), as well as the phenotypic resistance to four antibiotics (Ampicillin, Ampicillin+Sulbactam, Ciprofloxacin and Tetracycline), during four seasons of the year. Analysis of variance was performed and means were separated by the Scott-Knott test, at 5% error probability. In rivers, the highest values of fecal coliforms were recorded in summer and winter, and resistance to ampicillin and ampicillin+sulbactam was higher in autumn, while resistance to tetracycline was more prevalent in summer. In the wells, the highest averages of fecal coliforms occurred in summer, autumn and winter, and the highest levels of resistance were observed against ampicillin, in autumn. Overall, rivers had more compromised water quality, compared to wells, emphasizing the need to preserve aquatic resources in order to decrease evolution of resistance to antibiotics and diseases and deaths cause by superbacteria that may be ingested with contaminated water.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43797923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effects of tropospheric ozone on plant species: New perspectives 对流层臭氧对植物物种的影响:新观点

IF 0.4

Acta Brasiliensis Pub Date : 2022-05-30 DOI: 10.22571/2526-4338583

Kirsty Vella, E. Attard

{"title":"The effects of tropospheric ozone on plant species: New perspectives","authors":"Kirsty Vella, E. Attard","doi":"10.22571/2526-4338583","DOIUrl":"https://doi.org/10.22571/2526-4338583","url":null,"abstract":"The effect of tropospheric ozone on the physiology of plants has been well established using physicochemical analysis and visual assessment. One of the main metabolic processes, in plants that is affected by ozone, is photosynthesis. This in turn affects a number of secondary processes required for the survival of plants. This study focused on two main aspects; the qualitative determination of damage through visual assessment and the quantification of damage through the determination of the content of chlorophyll and other quality parameters using spectrophotometric techniques in a number of plant species. Three distinct setups were considered, mainly rural, urban and semiurban, representing the topography of the islands of Malta and Gozo. It was observed that chlorosis was not the sole factor contributing to the yellowing of the leaves. Another important finding was the correlation between ozone levels (50.18-69.35 ppb) and the anthocyanin content (2.57-28.99 mg/kg) of leaves. From the three plant species that were extensively studied (Nerium oleander, Pinus halepensis and Schinus terebinthifolius), the N. oleander exhibited promising results as a bioindicator for ozone-induced damage. Due to the presence of this ornamental plant in rural and urban areas, it can be used by researchers and authorities as a tool for assessment of tropospheric ozone levels.","PeriodicalId":41699,"journal":{"name":"Acta Brasiliensis","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43927175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Expansion of the geographic distribution and conservation status of Paullinia cearensis Somner & Ferrucci (Sapindaceae) 莎草科Paullinia cearensis Somner&Ferrucci的地理分布及保护现状

IF 0.4

Acta Brasiliensis Pub Date : 2022-05-30 DOI: 10.22571/2526-4338591

J. Nascimento, G. S. Silva, Gonçalo Mendes Da Conceição

引用次数: 1

Predator-prey: predation strategies of Leptodactylus macrosternum and defensive behavior of Leptodactylus fuscus 捕食者-猎物:大胸瘦趾象的捕食策略和尖趾细趾象的防御行为

IF 0.4

Acta Brasiliensis Pub Date : 2022-05-30 DOI: 10.22571/2526-4338586

Claylton A. Costa, Lucas Rafael Uchôa, Sâmia Caroline Melo Araújo, Mariane Silva Oliveira, E. Andrade

引用次数: 0