Acta Scientiarum. Biological Sciences最新文献_第4页

Activity of rosemary (Rosmarinus officinalis - Family: Lamiaceae) essential oil compared to peracetic acid in Listeria monocytogenes biofilms 迷迭香精油与过氧乙酸在单核增生李斯特菌生物膜中的活性比较

Acta Scientiarum. Biological Sciences Pub Date : 2023-06-15 DOI: 10.4025/actascibiolsci.v45i1.67277

Emanoelli Aparecida Rodrigues dos Santos, L. E. Tadielo, Thiago Henrique Bellé, Jhennifer Arruda Schmiedt, V. H. C. Dias, Paulo Henrique Silva Orisio, C. K. Cerqueira-Cézar, J. G. Pereira, V. C. Barcellos, L. Bersot

{"title":"Activity of rosemary (Rosmarinus officinalis - Family: Lamiaceae) essential oil compared to peracetic acid in Listeria monocytogenes biofilms","authors":"Emanoelli Aparecida Rodrigues dos Santos, L. E. Tadielo, Thiago Henrique Bellé, Jhennifer Arruda Schmiedt, V. H. C. Dias, Paulo Henrique Silva Orisio, C. K. Cerqueira-Cézar, J. G. Pereira, V. C. Barcellos, L. Bersot","doi":"10.4025/actascibiolsci.v45i1.67277","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v45i1.67277","url":null,"abstract":"The objective of this study was to evaluate the activity of Rosmarinus officinalis essential oil (EO) compared to peracetic acid (PA) regarding formation and elimination of Listeria monocytogenes biofilms on polystyrene surface. The minimum inhibitory concentration (MIC) was determined according to standard protocol. Isolates were inoculated according to MIC standards polystyrene plate wells, which were then incubated at 37°C/96 hours for evaluation of biofilm formation. Regarding the evaluation of biofilm elimination, the biofilms were treated under MIC for 10 minutes. The MIC obtained were 2.0 and 3.0 mg mL-1 for EO and 0,015% for PA. Therefore, the results showed a reduction in the formation of biofilm with the presence of EO and PA, EO being more efficient (p < 0.05). Both compounds had a good capacity of eliminating biofilms, however the EO reduced the biofilm formation when compared to PA, highlighting its potential as an antibacterial agent and antibiofilm.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89600712","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

Biometric and morphological adjustments of Eugenia. dysenterica DC. seedlings in response to increased soil water deficit Eugenia的生物特征和形态调整。dysenterica直流。幼苗对土壤水分亏缺增加的反应

Acta Scientiarum. Biological Sciences Pub Date : 2023-06-15 DOI: 10.4025/actascibiolsci.v45i1.62761

Matheus Pena Campos, J. Rufini, B. M. Silva, M. Guedes, Y. M. García, Janaina Canaan Rezende de Souza, R. P. Azevedo, Miriã Cristina Pereira Fagundes

{"title":"Biometric and morphological adjustments of Eugenia. dysenterica DC. seedlings in response to increased soil water deficit","authors":"Matheus Pena Campos, J. Rufini, B. M. Silva, M. Guedes, Y. M. García, Janaina Canaan Rezende de Souza, R. P. Azevedo, Miriã Cristina Pereira Fagundes","doi":"10.4025/actascibiolsci.v45i1.62761","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v45i1.62761","url":null,"abstract":"Water stress can affect all aspects of plant growth and development, compromising its productive potential. The cultivation of fruit species native to the Cerrado and the study of their behavior under conditions of low water availability are necessary activities, in view of their socioeconomic and environmental potential. This study was conducted to evaluate the effect of water deficit on growth and biomass production of the cagaita tree (Eugenia dysenterica DC.), a species endemic to the Cerrado (Brazilian Savannah). The experiment was performed in a greenhouse for 120 days in a randomized block design (RBD), with a double factorial arrangement (2x5), corresponding to two cagaita mother plants and five water conditions. We evaluated the growth and leaf, stem and root functional characteristics. The most severe water deficit conditions reduced shoot growth, number of leaves, production of biomass and dry matter and increased the specific and per plant mass root length of cagaita plants. Deficit extension had negative effects on its growth and development. There was a statistical difference between mother plants, with mother plant 2 being more resistant to drought. The application of a severe or longer water deficit affected shoot growth and reduced the appearance of new leaves. The stress caused by water deficiency allowed an increase in root functional characteristics, supporting the hypothesis that plants under adverse conditions focus on higher biomass production and convert a higher amount of dry matter into the roots. Leaf area did not show to be a functional characteristic, explaining the stress effects in E. dysenterica DC plants.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74009168","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: 1

Bioremediation, drought tolerance and biofortification in biotechnological uses 生物技术应用中的生物修复、抗旱和生物强化

Acta Scientiarum. Biological Sciences Pub Date : 2023-06-15 DOI: 10.4025/actascibiolsci.v45i1.64163

B. D. Novello, Marcela Maria Zanatta, A. P. Albrecht, A. Barroso

引用次数: 1

Eco-friendly fungicide based on chitosan and pecan nut oil: development and evaluation in anthracnose control 壳聚糖和核桃油环保型杀菌剂的研制及防治炭疽病的评价

Acta Scientiarum. Biological Sciences Pub Date : 2023-06-15 DOI: 10.4025/actascibiolsci.v45i1.62090

G. Giacomini, G. F. Nachtigal, C. Martins, Adriane Roedel Hirdes, R. A. Valgas, A. Santos

{"title":"Eco-friendly fungicide based on chitosan and pecan nut oil: development and evaluation in anthracnose control","authors":"G. Giacomini, G. F. Nachtigal, C. Martins, Adriane Roedel Hirdes, R. A. Valgas, A. Santos","doi":"10.4025/actascibiolsci.v45i1.62090","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v45i1.62090","url":null,"abstract":"Industrial processing of pecan nuts results in edible oil – with fractions of fatty acids, polyphenols and phytosterols - that may be used for managing phytopathogens. Besides, chitosan may interfere with pathogen development directly and/or activate mechanisms of defense in plant tissues. This study aimed at developing a novel, natural and eco-friendly fungicide based on pecan nut oil immobilized in chitosan and at evaluating its activity against Colletotrichum gloeosporioides, an agent of anthracnose in guava trees and other fruit trees. Changes in the immobilized material exhibited at bands were identified by infrared spectroscopy. Additionally, micrographs by scanning electron microscopy (SEM) showed efficient changes in the immobilized material, by comparison with the polymer chitosan. Decreases in Colletotrichum gloeosporioides sporulation in vitro were 37% in the case of pecan nut oil immobilized in chitosan (IO) and 39% in the case of non-immobilized pecan nut oil (NIO). These results are positive because this fungus produces a large number of spores which may disseminate and survive on surfaces of plant tissues infected by anthracnose. Immobilization of pecan oil in chitosan showed benefits in the synthesis of a novel, stable and eco-friendly material which may be applied to guava trees to control anthracnose.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80053903","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

Bell-trap effectiveness to capture Crypturellus obsoletus and Crypturellus tataupa (Aves: Tinamidae) in southern Brazil 钟形诱捕器捕获巴西南部废隐蝇和大隐蝇的效果

Acta Scientiarum. Biological Sciences Pub Date : 2023-04-25 DOI: 10.4025/actascibiolsci.v45i1.58024

L. L. C. Corrêa, D. E. Silva, Phamela Katharina Müller, M. Petry

{"title":"Bell-trap effectiveness to capture Crypturellus obsoletus and Crypturellus tataupa (Aves: Tinamidae) in southern Brazil","authors":"L. L. C. Corrêa, D. E. Silva, Phamela Katharina Müller, M. Petry","doi":"10.4025/actascibiolsci.v45i1.58024","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v45i1.58024","url":null,"abstract":"Specific techniques for the efficient capture of forest tinamous in a short sampling time are yet poorly described in the literature. Here, we report the efficiency of the bell-trap in the capture of Brown Tinamou (Crypturellus obsoletus) and Tataupa Tinamou (Crypturellus tataupa), in southern Brazil. We used three bell-traps adapted with casting nets. In 80 hours of sampling effort, four adult individuals of C. obsoletus were captured, in a forest area in the Pampa Biome. This study area is located in the municipality of São Sepé, state of Rio Grande do Sul, Brazil. Subsequently, in 16 hours of sampling effort in a forest area of the Atlantic Forest domain, one individual of C. obsoletus and one of C. tataupa were captured. This other study area is located in the municipality of Passo do Sobrado, RS. The bell-trap method has already been reported as efficient in capturing Yellow-legged Tinamous (Crypturellus noctivagus), in southern Brazil. However, since forest tinamous are cryptical birds, field adaptations are often necessary to achieve success in sampling activities. The use of this method proved efficient in the capture of forest tinamous, generating an important tool for the collection of bioecological data of this group of birds, which still represents a lack of studies.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87192096","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

Structure and chemical nature of intercellular protuberances in Dennstaedtiaceae rhizomes (Polypodiopsida) 水蛭科根状茎细胞间突起的结构与化学性质

Acta Scientiarum. Biological Sciences Pub Date : 2023-04-19 DOI: 10.4025/actascibiolsci.v45i1.63169

Ivan Becari-Viana, P. Schwartsburd, A. A. Azevedo

{"title":"Structure and chemical nature of intercellular protuberances in Dennstaedtiaceae rhizomes (Polypodiopsida)","authors":"Ivan Becari-Viana, P. Schwartsburd, A. A. Azevedo","doi":"10.4025/actascibiolsci.v45i1.63169","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v45i1.63169","url":null,"abstract":"Intercellular protuberances (IPs) are projections on the cell surface and have been reported for families of ferns, Gymnosperms, and Angiosperms. Data on the type, chemical composition, and distribution of these structures among vascular plants are still scarce. Here, we investigate the occurrence, distribution, type of IPs among species of eight Dennstaedtiaceae genera and verify the taxonomic significance of these protuberances in the family. Rhizomes of 23 species of Dennstaedtiaceae from field and herbaria collections were analyzed by light microscopy and scanning electron microscopy. Histochemical tests were performed to identify the main classes of IPs chemical compounds. Two types of IPs were observed in Dennstaedtiaceae species: strand and filament types. They were observed in the intercellular spaces of the parenchyma in the cortex and pith regions. Overall, protuberances are irregularly shaped, with angustate or spheroidal apices. Their polysaccharide nature and pectic constitution were confirmed by histochemical tests. Concerning Pteridium arachnoideum (Kaulf.) Maxon subsp. arachnoideum, IPs have confirmed phenolic composition. Evidence indicates that IPs in Dennstaedtiaceae originate from the fragmentation of the middle lamella and that they have a structural function as well as protection against pathogens. In lateral-line aerenchyma, the occurrence of filament-type IPs may be related to the larger intercellular spacing in the cortex region, providing greater mechanical resistance. We have expanded the data on the occurrence of IPs in the Dennstaedtiaceae, which appear to be notable characters for the family. Moreover, the data presented herein confirmed the polysaccharide and pectic nature of these structures. However, we were unable to find links between IPs and taxonomy and evolution of the Dennstaedtiaceae. On the other hand, different IPs types were identified between the clades Dennstaedtioideae (strand-type IPs) and Hypolepidoideae (filament-type IPs, with exceptions).","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91282642","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

Odonata community in transition areas between Cerrado and Atlantic Forest biomes in south-central Minas Gerais, Brazil 巴西米纳斯吉拉斯州中南部塞拉多和大西洋森林生物群落之间过渡地区的大鼠群落

Acta Scientiarum. Biological Sciences Pub Date : 2023-04-19 DOI: 10.4025/actascibiolsci.v45i1.63434

T. P. Gouvêa, G. Stefani-Santos, D. Vilela, W. F. Á. Ávila Júnior, Marcos Magalhães de Souza

{"title":"Odonata community in transition areas between Cerrado and Atlantic Forest biomes in south-central Minas Gerais, Brazil","authors":"T. P. Gouvêa, G. Stefani-Santos, D. Vilela, W. F. Á. Ávila Júnior, Marcos Magalhães de Souza","doi":"10.4025/actascibiolsci.v45i1.63434","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v45i1.63434","url":null,"abstract":"Faunal inventories are essential for biota management and conservation, especially in areas with potential for the creation of conservation units. Inventories of insect taxa such as dragonflies and damselflies (Odonata), which perform several environmental services in aquatic and terrestrial ecosystems, are of great importance. In view of the above, this study aimed to update and expand the list of Odonata species in the Barroso region, Minas Gerais State, Brazil. This study was carried out in three areas of forest fragments in Atlantic Forest and Cerrado biomes in October 2020, December 2020, January 2021, and March 2021. The sampling effort was 8 hours per day during 20 days, totaling 140 sampling hours. A total of 43 Odonata species were recorded, which increased the richness of the study area from 57 to 76 species. The studied areas harbor rare and endangered species. However, since the last sampling in 2009, there has been a significant reduction in diversity in the Atlantic Forest fragment. In view of the changes that forest fragments are undergoing, we underscore the need to create a conservation unit, especially in Baú Forest.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79823914","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

Morphological aspects and germ cells of male reproductive tract of river stingray, Potamotrygon amandae 河黄貂鱼雄性生殖道的形态特征和生殖细胞

Acta Scientiarum. Biological Sciences Pub Date : 2023-04-19 DOI: 10.4025/actascibiolsci.v45i1.63722

Stefhani Cristina Chan Jacik, J. Aquino, L. Melo, R. Rodrigues, A. Melo, M. Miglino, R. Rici

{"title":"Morphological aspects and germ cells of male reproductive tract of river stingray, Potamotrygon amandae","authors":"Stefhani Cristina Chan Jacik, J. Aquino, L. Melo, R. Rodrigues, A. Melo, M. Miglino, R. Rici","doi":"10.4025/actascibiolsci.v45i1.63722","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v45i1.63722","url":null,"abstract":"The family Potamotrygonidae are the only species of stingrays restricted to fresh water and located exclusively in South America. The objective of this research was to analyze the morphological aspects and germ cells of the male reproductive tract of Potamotrygon amandae. The samples were fixed in 10% formalin, and then dehydrated in an ascending ethanol series (70 to 100%). To carry out light microscopy analyses, they were embedded in paraffin, cut and stained; as for scanning electron microscopy analyses, the samples were dried, glued in metallic bases and metalized. The gross morphology consisted of the following paired organs: testis, epididymis, deferent duct, Leydig gland, seminal vesicle, clasper, and the clasper gland. Microscopically, several stages of spermatogenesis were observed in the testis, occurring in spherical follicles, similar to other stingrays. The epididymis was formed by one duct subdivided in various tubules. The deferent ducts were continuous with the epididymis, and the lumen was full of spermatozoa. The Leydig glands consisted of glandular units with eosinophilic content in the lumen of some, and the deferent ducts ran parallel to the ventral portion. The seminal vesicles possessed numerous compartments to store the sperm, with a wall similar to a hive, and the lumen was full of spermatozoa. Alcian Blue (AB) and Periodic Schiff-Acid (PAS) performed in the Leydig Gland, deferens ducts and seminal vesicle was positive only in the connective tissue, the cilia were PAS+ and the nuclei stained weakly for AB. The clasper gland was composed of unit glands and was covered with striated muscle externally. It stained very well with Periodic Schiff-Acid. The morphological aspects of the male reproductive tract of Potamotrygon amandae were similar to other stingrays.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"252 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74988240","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 role of habitat complexity in the survival rates of migratory (native) and sedentary (non-native) species of fish larvae 栖息地复杂性对洄游(本地)和定居(非本地)鱼苗存活率的影响

Acta Scientiarum. Biological Sciences Pub Date : 2023-04-19 DOI: 10.4025/actascibiolsci.v45i1.63386

C. Lacerda, C. M. Soares, C. Hayashi

引用次数: 0

Oxidative stress caused by lead in the lichen Xanthoria parietina 铅对地衣氧化应激的影响

Acta Scientiarum. Biological Sciences Pub Date : 2023-04-19 DOI: 10.4025/actascibiolsci.v45i1.63221

Ouahiba Benhamada, E. Laib, Nabila Benhamada, Sarah Charef, Madjeda Chennah, Sara Chennouf, Hanane Derbak, E. Leghouchi

引用次数: 0