Anais da Academia Brasileira de Ciencias最新文献_第6页

Characterization of dark septate endophytic fungi Periconia macrospinosa isolated from roots of sugarcane in São Paulo, Brazil. 巴西圣保罗甘蔗根中深隔内生真菌大棘周孢的鉴定。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0001-3765202420231367

Luana C Silva, Orivaldo José Saggin-Júnior, Marco Aurélio C Carneiro, Eliane Maria R DA Silva, Jerri Édson Zilli, Ricardo Luis L Berbara

{"title":"Characterization of dark septate endophytic fungi Periconia macrospinosa isolated from roots of sugarcane in São Paulo, Brazil.","authors":"Luana C Silva, Orivaldo José Saggin-Júnior, Marco Aurélio C Carneiro, Eliane Maria R DA Silva, Jerri Édson Zilli, Ricardo Luis L Berbara","doi":"10.1590/0001-3765202420231367","DOIUrl":"https://doi.org/10.1590/0001-3765202420231367","url":null,"abstract":"Dark Septate Endophytic (DSE) fungi can benefit plants by optimizing nutrient uptake, biosynthesis of phytohormones-like compounds, and stress relief such as toxic metals. The objective was to characterize in vitro 57 strains of the DSE Periconia macrospinosa isolated from sugarcane roots, indicating the most promising in solubilizing phosphate sources, growing in different metal and vinasse contents, and producing molecules related to indoleacetic acid (IAA). The strains were from the Embrapa Agrobiology Fungi Collection. Over 35% of the strains solubilize calcium phosphate, highlighting A356 and A155. No strain solubilizes aluminum phosphate. Three strains did not grow in the presence of Cd (A333, A334, A163), but A226, A332, and A423 stand out showing high growth with Cd. All strains grew in the presence of Cu, Zn, and Vinasse. A163, A164, and A328 were even stimulated by Cu addition. A331 and A335 showed a marked growth decrease with Zn. All strains are highly adapted to grow in vinasse presence. A257 and A226 produced the highest amount of IAA. The most biotechnological potential strains are indicated by presenting high growth under Cd, Cu, Zn, and vinasse stress, associated with a high tolerance index to these pollutants, further calcium phosphate solubilization, or IAA production.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"96 suppl 3","pages":"e20231367"},"PeriodicalIF":1.1,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioestratinomic Classification and Genesis of Shell Beds (Coquinas) from the Santa Marta Formation (Upper Cretaceous) of James Ross Island, Antarctica. 南极洲詹姆斯罗斯岛上白垩统圣玛尔塔组壳层生物组学分类及成因。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0001-3765202420240692

Luiz Carlos Weinschütz, Renato P Ghilardi, Alexander W A Kellner, Juliana M Sayão

{"title":"Bioestratinomic Classification and Genesis of Shell Beds (Coquinas) from the Santa Marta Formation (Upper Cretaceous) of James Ross Island, Antarctica.","authors":"Luiz Carlos Weinschütz, Renato P Ghilardi, Alexander W A Kellner, Juliana M Sayão","doi":"10.1590/0001-3765202420240692","DOIUrl":"https://doi.org/10.1590/0001-3765202420240692","url":null,"abstract":"Shell beds, or coquinas, have a complex origin, limiting their utility in paleoecology. However, such accumulations can serve as crucial paleoenvironmental indicators, since their bioestratinomic and diagenetic properties explain the physical-chemical and biological processes of their formation, as well as the ancient environments linked to their development. In 2016, the PALEOANTAR Project sampled coquinas from the James Ross Island (Antarctic Peninsula) in Passo São José (PSJ - San José Way) and Muro do Castelo (MDC - Castle Wall), two new localities with outcrops of the lower Lachman Crags Member, Santa Marta Formation, Marambio Group, Cretaceous of Larsen Basin. The paleontological content and sedimentary structures indicate a shallow marine depositional system. The PSJ coquina are composed by gastropods bioclasts, with predominantly dense/loose packing. The MDC presents a larger variety of bioclasts with bivalve dominance on a loose packing and conglomeratic horizons, that varies from granule to pebble. Sedimentary and biostratinomic features observed in samples from both localities indicate their genesis from high-energy events, characterized as a proximal tempestite. These descriptions allow a more accurate reconstruction of the depositional environments, highlighting the importance of these rocks in the geological record during the Cretaceous of Antarctica.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"96 suppl 2","pages":"e20240692"},"PeriodicalIF":1.1,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward Enhanced Antibiotic Efficacy: Exploring the Synergistic Potential of Marine-Derived Lectins Against Human Pathogenic Bacteria. 提高抗生素疗效：探索海洋来源凝集素对人类致病菌的协同作用潜力。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0001-3765202420240072

Rômulo F Carneiro, Pedro Arthur S Tabosa, José Gabriel S Cândido, Vinícius Paulino P Menezes, Pedro Abilio V Rocha Júnior, Alexandre L Andrade, Mayron A Vasconcelos, Edson H Teixeira, Celso S Nagano, Alexandre H Sampaio

{"title":"Toward Enhanced Antibiotic Efficacy: Exploring the Synergistic Potential of Marine-Derived Lectins Against Human Pathogenic Bacteria.","authors":"Rômulo F Carneiro, Pedro Arthur S Tabosa, José Gabriel S Cândido, Vinícius Paulino P Menezes, Pedro Abilio V Rocha Júnior, Alexandre L Andrade, Mayron A Vasconcelos, Edson H Teixeira, Celso S Nagano, Alexandre H Sampaio","doi":"10.1590/0001-3765202420240072","DOIUrl":"https://doi.org/10.1590/0001-3765202420240072","url":null,"abstract":"This study aimed to assess the combined antibacterial effect of lectins and antibiotics on S. aureus ATCC 25923, multidrug-resistant E. coli ATCC 11303 and S. aureus ATCC 700698. Using the checkerboard assay, we evaluated the antibacterial effects of eight lectins isolated from marine organisms combined with two common antibiotics, oxacillin and tetracycline, on three virulent bacterial strains. Initially, none of the tested lectins exhibited antibacterial effects when used individually. However, when combined with antibiotics, the lectins exhibited synergistic, additive, antagonistic, or no interaction. Overall, the tested lectins alone had no effect on the efficacy of oxacillin. On the other hand, different lectins in combination with tetracycline potentiated its antimicrobial effect. Lectins from red algae of the Bryothamnium genus, for example, exhibited the most significant synergistic effects, reducing the minimum inhibitory concentration (MIC) of tetracycline by up to 16 times. Lectins from the Hypnea genus also reduced the MIC of tetracycline. Our findings suggest that some lectins binding to complex carbohydrates containing fucosylated cores (α1-6) are excellent candidates to boost the efficacy of some antibiotics.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"96 4","pages":"e20240072"},"PeriodicalIF":1.1,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the potential of glaciochemical analysis of Joinville Island firn core for the sea ice reconstruction around the northern Antarctic Peninsula. Joinville岛冰芯冰川化学分析在南极半岛北部海冰重建中的潜力

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0001-3765202420230751

Alexandre S DE Alencar, Heitor Evangelista, Sérgio J Gonçalves, Jefferson C Simões, Israel Felzenszwalb, Alberto Setzer, Heber R Passos

{"title":"On the potential of glaciochemical analysis of Joinville Island firn core for the sea ice reconstruction around the northern Antarctic Peninsula.","authors":"Alexandre S DE Alencar, Heitor Evangelista, Sérgio J Gonçalves, Jefferson C Simões, Israel Felzenszwalb, Alberto Setzer, Heber R Passos","doi":"10.1590/0001-3765202420230751","DOIUrl":"https://doi.org/10.1590/0001-3765202420230751","url":null,"abstract":"The Antarctic Peninsula is undergoing rapid climate changes, impacting its surrounding marine ecosystem. At that site, sea ice plays a crucial role in this ecosystem by serving as a habitat for organisms and influencing primary productivity. Studying sea ice variability and primary productivity is essential for understanding environmental changes in Antarctica. This research focused on Joinville Island, located at the tip of the Antarctic Peninsula, where meteorological data and glaciochemical analysis were conducted on snow/firn cores for Cl-, Na+, Ca2+, Mg2+, SO4 2-, NO3 -, K+, MSA, NH4 + and F- to retrieve recent past environmental variabilities. The study revealed that Joinville Island experienced a net accumulation rate of 0.40 meters per year in water equivalent between 1993 and 2005. In snow/firn cores, Na+ correlated with both wind strength and sea ice extent (r=0.59 and r=0.66, respectively) while correlations were higher for MSA and Cl- with respect to sea ice (r=0.80 and r=0.74, respectively), considering both the Weddell and Amundsen-Bellingshausen sub-sectors. This analysis contributes to our understanding of sea ice dynamics and its influence on primary productivity in the area.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"96 suppl 2","pages":"e20230751"},"PeriodicalIF":1.1,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new genus of the 'Pitar' group (Bivalvia: Veneridae) from the Western Atlantic Ocean revealed by geometric morphometric analysis. 根据几何形态计量学分析发现的西大西洋“Pitar”群新属（双壳目：Veneridae）。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0001-3765202420230733

Maximiliano J Alvarez, María Belén Santelli, María Belén VON Baczko, Damián E Pérez, Alejandra Rojas

{"title":"A new genus of the 'Pitar' group (Bivalvia: Veneridae) from the Western Atlantic Ocean revealed by geometric morphometric analysis.","authors":"Maximiliano J Alvarez, María Belén Santelli, María Belén VON Baczko, Damián E Pérez, Alejandra Rojas","doi":"10.1590/0001-3765202420230733","DOIUrl":"https://doi.org/10.1590/0001-3765202420230733","url":null,"abstract":"Understanding shell morphology is central to taxonomic and evolutionary studies of bivalves. When traditional systematic studies find limitations in the recognition and classification of taxa, geometric morphometrics methods become a tool to tackle these uncertainties. Taxonomic difficulties are frequently found in systematics studies of the generally homoplastic Pitarinae (Venereidae). Recent contributions have proposed that Neogene-Recent South American species traditionally assigned to Pitar sensu stricto showed a distinguishable morphology that allowed separating them from that genus, including them in Proteopitar. In this contribution, we perform two morphometric analyses: elliptic Fourier analysis (EFA) and 2D landmark analysis with the aim of evaluating the intra- and interspecific variation of these taxa from the Western Atlantic Ocean included in Pitar s.s. to evaluate its doubtful generic assignments. EFA results show a highly variable outline in Proteopitar patagonicus, superimposed in the morphospace of all other taxa. The three analyzed groups, Pitar, Proteopitar, and extant Western Atlantic Ocean species, are statistically differentiable in hinge morphologies (landmark analysis), as corroborated by the Discriminant Function Analysis. The latter taxa are also distributed in a restricted portion of morphospace in EFA and along with the recognition of additional morphological differences allow us to define the new genus Jasypitar.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"96 suppl 3","pages":"e20230733"},"PeriodicalIF":1.1,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization and evaluation of three new strains of Beauveria bassiana isolated from Musca domestica L. (Diptera: Muscidae). 家蝇白僵菌3株新分离株的鉴定与评价（双翅目：蝇科）

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2024-12-02 eCollection Date: 2024-01-01 DOI: 10.1590/0001-3765202420240879

Juan Manuel DE Abajo, Ana Clara Scorsetti, Mara Florencia Vianna, Maria Leticia Russo, Inés Troncozo, Sebastián A Stenglein, Natalia Ferreri, Sebastián A Pelizza

引用次数: 0

New opportunities for applications of cellulose nanocrystal: non-covalent protein coupling analysis by flow cytometry. 纤维素纳米晶体应用的新机遇：用流式细胞术分析非共价蛋白偶联。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2024-12-02 eCollection Date: 2024-01-01 DOI: 10.1590/0001-3765202420240366

Juliane C Glória, Luis André M Mariúba, Yury O Chaves, Adélia M DE Figueiredo, Lizandro Manzato

引用次数: 0

The chaotic dynamics and behavior of prey-predator interaction: Insights into complex ecological systems and epidemic modeling. 捕食者-猎物相互作用的混沌动力学和行为：对复杂生态系统和流行病建模的见解。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2024-12-02 eCollection Date: 2024-01-01 DOI: 10.1590/0001-3765202420240435

Moises M Pariona

引用次数: 0

Sedative and anesthetic efficacy of the essential oils from the Brazilian native plants Pilocarpus pennatifolius and Cordia verbenacea in Nile Tilapia. 巴西本土植物毛菖蒲和马鞭草精油对尼罗罗非鱼的镇静和麻醉作用。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2024-12-02 eCollection Date: 2024-01-01 DOI: 10.1590/0001-3765202420240235

Carlos Herminio M Fortes, Bernardo Baldisserotto, Frederico D Fleig, Berta Maria Heiznmann

{"title":"Sedative and anesthetic efficacy of the essential oils from the Brazilian native plants Pilocarpus pennatifolius and Cordia verbenacea in Nile Tilapia.","authors":"Carlos Herminio M Fortes, Bernardo Baldisserotto, Frederico D Fleig, Berta Maria Heiznmann","doi":"10.1590/0001-3765202420240235","DOIUrl":"https://doi.org/10.1590/0001-3765202420240235","url":null,"abstract":"This study aimed to evaluate the effectiveness of essential oils (EO) of Pilocarpus pennatifolius (PPOL) and Cordia verbenacea (CVOL) as sedatives and/or anesthetics in juvenile Nile tilapia (Oreochromis niloticus). The main constituents of PPOL were 2-undecanone (57.2%) and 2-Tridecanone (28.3%), and of CVOL α-pinene (34.8%), which were determined by gas chromatography. PPOL led juveniles to sedation at concentrations of 2 (703.8s), 10 (407.4s), 20 (225.5s), 50 (190.2s), and 80 (163.5s) mg L-1. CVOL also induced sedation at these concentrations, with times of 504.9, 294.2, 142.8, 113.8, and 135.6 s, respectively. Both EOs at 200 mg L-1 induced deep anesthesia within 507.5 (PPOL) and 1267.7 s (CVOL). Exposure to PPOL at 2, 20, and 80 mg L-1 for 48 h resulted in fish sedation, while CVOL lead fish to sedation at the two lowest concentrations and anesthesia at the highest one. Possible stress responses were evaluated during anesthetic recovery and long exposure, and PPOL did not cause behavioral or glucose levels changes in all evaluations. However, CVOL increased glucose levels at the highest concentrations studied (80 and 200 mg L-1), indicating that this oil may have caused stress in fish.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"96 suppl 3","pages":"e20240235"},"PeriodicalIF":1.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142779391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of TiO2 nanoparticles by the solvothermal method and application in the catalysis of esterification reactions. 溶剂热法制备TiO2纳米颗粒及其在酯化反应中的应用。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2024-12-02 eCollection Date: 2024-01-01 DOI: 10.1590/0001-3765202420240096

Luana A C S Domingues, Giovanni M Carriello, Guilherme M Pegoraro, Giovanni P Mambrini

{"title":"Synthesis of TiO2 nanoparticles by the solvothermal method and application in the catalysis of esterification reactions.","authors":"Luana A C S Domingues, Giovanni M Carriello, Guilherme M Pegoraro, Giovanni P Mambrini","doi":"10.1590/0001-3765202420240096","DOIUrl":"https://doi.org/10.1590/0001-3765202420240096","url":null,"abstract":"TiO2 nanoparticles have numerous applications, prompting extensive efforts to optimize their synthesis for various technologies. This study synthesized TiO2 nanoparticles via the solvothermal method, using a chemometric approach to vary time, temperature, and concentrations of both the precursor and crystallization agent, aiming to understand these variables' effects on crystallite size. Post-synthesis, a sample underwent treatment for sulfate adsorption to alter surface properties from hydrophobic to hydrophilic. Characterization techniques included X-ray diffraction (XRD), infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The results indicated the formation of crystalline anatase phase nanoparticles, with particle sizes ranging from 25 to 38 nm and crystallite sizes from 8 to 10 nm. Sulfation was confirmed via FTIR, and SEM revealed particle agglomeration. Catalytic performance was assessed through esterification reactions, with two analyses: one comparing nanoparticles with and without surface modification, and the other examining the effects of variables like time, catalyst amount, and temperature on product formation. Sulfated samples exhibited excellent catalytic performance, achieving 60% conversion after 2 hours at 50 °C. Pure TiO2 samples also showed good conversion rates when synthesized at higher temperatures and Ti4+ concentrations.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"96 suppl 3","pages":"e20240096"},"PeriodicalIF":1.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142779395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0