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Anais da Academia Brasileira de Ciências

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https://www.readbyqxmd.com/read/30379266/growth-and-production-of-volatile-compounds-of-yarrow-achillea-millefolium-l-under-different-irrigation-depths
#1
Ivan C A Alvarenga, Fernanda V Pacheco, Amauri A Alvarenga, Suzan K V Bertolucci, José Eduardo B P Pinto
Yarrow (Achillea millefolium L., Asteraceae) is an important medicinal plant used worldwide for its medicinal properties such as the analgesic, antioxidant and anti-inflammatory ones. The aim of this study was to evaluate the growth and production of photosynthetic pigments and of volatile constituents of Achillea millefolium L. under different irrigation depths. The treatments were the application of 55, 110, 220, 440 and 880 mm of water for a period of 110 days. Data were submitted to polynomial regression analysis at 5% probability, while the volatile constituents were analyzed by standard deviation...
November 1, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30379274/hematological-and-biochemical-profile-of-balb-c-nude-and-c57bl-6-scid-female-mice-after-ovarian-xenograft
#2
Denilsa P Fernandes, Muriel M L Pimentel, Fernanda A Dos Santos, Érika A Praxedes, Parmênedes D DE Brito, Mikael A Lima, Ivana C N G Lelis, Michelly F DE Macedo, Marcelo B Bezerra
Hematological and biochemical profile studies help to evaluate functional changes of animals used in experiments. The aim of this study was to determine the hematological and biochemical profile of immunosuppressed BALB/c nude and C57BL/6 SCID mice after bovine ovarian xenotransplantation. Therefore, a total of 74 female mice were divided into four groups: non-xenotransplanted animals, xenotransplanted animals, xenotransplanted animals treated with eCG and xenotransplanted animals treated with FSH + LH. After anesthesia, blood samples were collected and hematologic and biochemical values were evaluated...
October 25, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30379273/bibliometric-analysis-for-pattern-exploration-in-worldwide-digital-soil-mapping-publications
#3
Luciano C Cancian, Ricardo S D Dalmolin, Alexandre T Caten
Bibliometric analyses provide a clear understanding of the scientific performance and relate them with standards of the global scientific production. Soil science is an outstanding and developing field among environmental sciences. Knowledge about soil characteristics and their distribution in the environment has been enriched by the use of new geotechnologies, resulting in what is known as digital soil mapping. Thus, the objective of this work was to characterize the scientific production in digital soil mapping in Brazil and in the world, in the period from 1996 to 2017, in databases such as Scopus and Web of Science...
October 25, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30379272/the-rates-and-players-of-denitrification-dissimilatory-nitrate-reduction-to-ammonia-dnra-and-anaerobic-ammonia-oxidation-anammox-in-mangrove-soils
#4
Danice M Luvizotto, Juliana E Araujo, Michele DE Cássia P Silva, Armando C F Dias, Beate Kraft, Halina Tegetmeye, Marc Strous, Fernando D Andreote
Mangroves are ecosystems located in the transition zone between land and sea, characterized by periodic flooding that confer to its unique characteristics. Little is known about the transformation of nutrients that occur during the organic matter degradation in this system. In this study, we monitor the nitrogen transformations in soils from three mangroves with distinct levels of contamination using labeled 15NO3-. We also screened the mangroves metagenomes for the presence of genes that encode enzymes involved in denitrification (nirS, nirK, nosZ, norB and narG), anaerobic oxidation of ammonia (anammox) (hh, hao and hzo) and dissimilatory nitrate reduction to ammonium (DNRA) (nrfA)...
October 25, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30379271/isolation-and-prospection-of-diazotrophic-rhizobacteria-associated-with-sugarcane-under-organic-management
#5
Ariana A Rodrigues, Marcus Vinícius F Araújo, Renan S Soares, Bruno F R DE Oliveira, Igor D A Ribeiro, Sergio T Sibov, José Daniel G Vieira
Microorganisms associated with organic management are essential in nutrient transformation and release for plant use. The present study aimed to isolate, identify and characterize plant growth promoting diazotrophic rhizobacteria associated with sugarcane under organic management. Rhizospheres of organic sugarcane varieties IAC 911099 and CTC4 were sampled and inoculated onto nitrogen free NFb and Burk media. The isolated microorganisms were screened in vitro concerning their ability to produce plant growth promoting factors...
October 25, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30379270/fertility-life-table-population-parameters-and-biotic-potential-of-helicoverpa-gelotopoeon-dyar-lepidoptera-noctuidae
#6
María I Herrero, Luciana C Dami, Sofía V Fogliata, Augusto S Casmuz, Daniel R Sosa Gómez, Gerardo A Gastaminza, María G Murúa
Helicoverpa gelotopoeon is an endemic pest of South America that affects soybean and other important crops. Life tables are a fundamental tool used to study insect populations, resulting in crucial information for integrated pest management programs. Therefore, the aim of this study was to evaluate the biotic potential and the construction of a life table of this species under laboratory conditions. The biological parameters that showed significant differences between male and female were pupal duration, longevity and life span, which were all longer in duration for males...
October 25, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30379269/physicochemistry-microbiology-fatty-acids-composition-and-volatile-profile-of-traditional-s%C3%A3-%C3%A4-le-tulum-goat-s-skin-bag-cheese
#7
Oguz Gursoy, Ahmet Küçükçetin, Özge Gökçe, Firuze Ergin, Kübra Kocatürk
Söğle cheese is a type of traditional tulum (goat's skin bag) cheese produced from goat's milk or a mixture of goat's and sheep's milk in Küçük Söğle and Büyük Söğle villages, Antalya, Turkey. This is the first study that aimed to investigate the physicochemistry, microbiology, fatty acids composition and volatile profile of traditional Söğle cheeses ripened in goat's skins for three months in wells. The pH and titratable acidity values, total solids, fat, protein and salt contents of the Söğle cheese samples ranged from 4...
October 25, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30379268/dynamics-of-solar-radiation-and-soybean-yield-in-agroforestry-systems
#8
Braulio O Caron, Jaqueline Sgarbossa, Felipe Schwerz, Elvis F Elli, Elder Eloy, Alexandre Behling
Soybean (Glycine max L.) monocropping have had a great socio-economic and environmental impact on the world and agroforestry systems has been considered an alternative for more sustainable production. The aim of this study was to evaluate the effect of different arrangements of agroforestry systems of the species E. urophylla x E. grandis and P. dubium and the pruning of the trees on the dynamics of solar radiation and soybean yield. A field experiment was conducted in Southern Brazil. In order to achieve the objective of the study, the solar radiation transmissivity and the productive performance of the soybean were evaluated...
October 25, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30379267/robust-volumetric-models-for-supporting-the-management-of-secondary-forest-stands-in-the-southern-brazilian-atlantic-forest
#9
Laio Z Oliveira, Aline R Klitzke, Alfredo C Fantini, Heitor F Uller, Jean Correia, Alexander C Vibrans
The majority of Atlantic Forest fragments in Southern Brazil are second-growth forests dominated by fast-growing species with considerable market-value timber. Nevertheless, volume prediction models are scarce, especially to estimate tree total volume (i.e., stem plus branches). This study approached the issue through the following aims: to fit and select stem and total volume models (generic and species-specific) using data from 288 harvested trees in a management operation, and to fit generic and species-specific bark factors...
October 25, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30379265/the-effects-of-an-osmoregulator-carbohydrates-and-polyol-on-maturation-and-germination-of-golden-thb-papaya-somatic-embryos
#10
Kristhiano Chagas, Jamile L D Cipriano, José Carlos Lopes, Edilson R Schmildt, Wagner C Otoni, Rodrigo S Alexandre
This study evaluated the effect of osmoregulators and carbohydrates on the maturation and germination of somatic embryos of papaya 'Golden THB'. Cotyledon explants from papaya seedlings germinated in vitro on basal MS medium were cultured on somatic embryogenesis induction medium (IM) containing MS salts, myo-inositol, sucrose, agar and p-chlorophenoxyacetic acid. After 50 days, embryogenic calli were transferred onto maturation media (MM) for 45 additional days. For experiment 1, a MS-based medium supplemented with abscisic acid, activated charcoal and concentrations of PEG 6000 (0; 40; 50; 60 and 70 g L-1) was used, whereas for experiment 2 malt extract concentrations (0; 0...
October 25, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30365722/management-of-pruning-and-evaluation-in-blackberry-cultivars-in-relation-to-productive-characteristics-and-bioactive-compounds
#11
Adriana Lugaresi, Alison Uberti, Clevison L Giacobbo, Maike Lovatto, Gian C Girardi, Américo Wagner Junior
The goal of this work was to evaluate blackberry cultivars in terms of productivity and bioactive compounds. Two experiments were conducted: in the first experiment four cultivars were evaluated (Cherokee, Guarani, BRS-Tupy and Xavante). In the second experiment, the effects of pruning management in the BRS-Tupy cultivar were evaluated with the following treatments: drastic winter pruning (zero primocane), and maintenance of two, three or four primocanes in the winter pruning. Vegetative, productive and fruit quality characteristics were determined, including measurement of bioactive compounds...
October 18, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30365721/a-new-protodidelphid-mammalia-marsupialia-didelphimorphia-from-the-itabora%C3%A3-basin-and-its-implications-for-the-evolution-of-the-protodidelphidae
#12
Leonardo M Carneiro
The Protodidelphidae was a group of marsupials that lived in Gondwana from the early to middle Eocene. Among South American faunas, the Itaboraí Basin calls attention by the presence of four genera and six species. Herein is described Bergqvistherium primigenia gen. et sp. nov., a new protodidelphid from the Itaboraí Basin - lower Eocene. This taxon differs from other protodidelphids in the smaller size, developed entocristid, less brachyo-bunoid adaptations, and entoconid more mesial than the hypoconid. These characters are recovered as plesiomorphies of the Protodidelphidae, supporting Bergqvistherium as an early-divergent lineage of this group...
October 18, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30365720/antioxidant-and-antimicrobial-potential-of-selected-varieties-of-piper-betle-l-betel-leaf
#13
Chayanika Sarma, Prasad Rasane, Sawinder Kaur, Jyoti Singh, Joginder Singh, Yogesh Gat, Umar Garba, Damanpreet Kaur, Kajal Dhawan
Piper betle L., is an evergreen perennial creeper belonging to family Piperaceae and is known to possess numerous medicinal properties. Current study focuses on evaluating antioxidant and antimicrobial potential of betel leaf. For the present study, distilled water, hexane, acetone and ethanolic extracts of two varieties of betel leaves: Meetha paan and Banarasi paan were used. Biochemical tests such as proximate analysis (moisture, ash, protein, lipids, minerals viz., sodium and potassium), antioxidant activity tests (DPPH radical scavenging activity, total phenolics, ascorbic acid, reducing power) and antimicrobial test (antibacterial and antifungal susceptibility test) against four pathogens viz...
October 18, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30365719/growth-and-biochemical-variables-in-amazon-catfish-pseudoplatystoma-reticulatum%C3%A2-x-leiarius-marmoratus%C3%A2-under-different-water-ph
#14
Carlos Henrique P Lemos, Samantha Chung, Cláudio V M Ribeiro, Carlos Eduardo Copatti
Although fish may live in different aquatic environments, variations in the water quality parameters, mainly pH, may have a substantial impact in their development and welfare. The objective of this study was to test the effect of different pH levels on the growth performance and biochemical variables in Amazon catfish juveniles (Pseudoplatystoma reticulatum x Leiarius marmoratus). Fish were subjected to four different water pH levels (4.56, 6.0, 7.24, and 8.90) for 40 days. The total ammonia and alkalinity were higher and lower, respectively, in the treatments with water pHs 4...
October 18, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30365718/protease-inhibitory-insecticidal-and-deterrent-effects-of-the-trypsin-inhibitor-benzamidine-on-the-velvetbean-caterpillar-in-soybean
#15
Anderson M Pilon, Wellington G Campos, Carolina R Silva, Glaúcia Cordeiro, Camila R Silva, Maria Goreti A Oliveira
The recognition of protease inhibitors with insecticidal activity is important as a basis for the development of mimetic peptides with potential use as biorational insecticides. We sprayed benzamidine on soybean plants and assessed whether this potent synthetic trypsin-inhibitor has protease inhibitory, insecticidal and deterrent effects on the velvetbean caterpillar Anticarsia gemmatalis Hübner (Lepidoptera: Erebidae). Activity of trypsin inhibition in soybean leaves was increased and total proteolytic activity in the midgut extract from larvae fed on these leaves was reduced by benzamidine...
October 18, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30365717/molecular-farming-of-antimicrobial-peptides-available-platforms-and-strategies-for-improving-protein-biosynthesis-using-modified-virus-vectors
#16
Michel L Leite, Kamila B Sampaio, Fabrício F Costa, Octávio L Franco, Simoni C Dias, Nicolau B Cunha
The constant demand for new antibiotic drugs has driven efforts by the scientific community to prospect for peptides with a broad spectrum of action. In this context, antimicrobial peptides (AMPs) have acquired great scientific importance in recent years due to their ability to possess antimicrobial and immunomodulatory activity. In the last two decades, plants have attracted the interest of the scientific community and industry as regards their potential as biofactories of heterologous proteins. One of the most promising approaches is the use of viral vectors to maximize the transient expression of drugs in the leaves of the plant Nicotiana benthamiana...
October 18, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30365716/vascular-epiphyte-biomass-in-a-south-brazilian-fragment-of-atlantic-forest
#17
Marise P Petean, Amanda K Marcon, Dieter Liebsch, Franklin Galvão, Rodrigo A Kersten
The present study aimed at sampling the biomass of vascular epiphytes within a protected area in South Brazilian Atlantic Forest. All tree specimens with diameter at breast height equal or greater than 4.8 cm were measured and divided into classes. In each class, 10% of tree specimens were randomly selected for epiphytic biomass measuring. Furthermore, we divided the phorophytes into five tree parts to analyze epiphytic biomass. We generated mathematical models to estimate epiphytic biomass in similar forest areas...
October 18, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30365715/sampling-system-for-estimating-woody-debris-in-an-urban-mixed-tropical-forest
#18
Sylvio Péllico Netto, Allan L Pelissari, Andressa Bribeiro, Sebastião A Machado, Rodrigo G M Nascimento
Woody debris, defined as standing and downed deadwood, consists in an essential component of the forest carbon stock. However, few studies have been carried out to get an efficient and accurate sampling procedure for estimating it. This work proposes two methodologies to estimate the woody debris volume in a Brazilian mixed tropical forest: 1) two-stage systematic sampling, using a mixed methodology, in which the Strand's method is applied to standing dead trees and stumps, and line intercept sampling is used to fallen trees and branches; and 2) ratio estimate of the sum of cross-sectional areas of deadwood pieces and forest basal area, aiming to obtain the total woody debris volume indirectly in the natural forest...
October 18, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30365714/grafting-height-does-not-affect-fusarium-wilt-control-or-horticultural-performance-of-passiflora-gibertii-n-e-br-rootstock
#19
Lucas K S Lima, Idália S Dos Santos, Zanon S Gonçalves, Taliane L Soares, Onildo N DE Jesus, Eduardo A Girardi
The influence of the grafting height (5, 10, 20 and 30 cm above the root collar) of P. edulis on P. gibertii was evaluated on the incidence of Fusarium wilt and horticultural performance. Plants of P. gibertii grafted on P. edulis and non-grafted plants of both species were also studied. In addition, histopathological studies were also performed on the roots of non-grafted P. edulis collected at three severity stages of Fusarium wilt. In greenhouse, the graft take was inversely related to the grafting height in general...
October 18, 2018: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/30365713/diversity-of-scale-insects-hemiptera-coccomorpha-in-ten-varieties-of-olive-trees-olea-europaea-l-in-southern-brazil
#20
Vera R S Wolff, Caio F S Efrom, Daniele C DA Silva, Adilson Tonietto
Olive production (Olea europaea L.) is a recent activity in Brazil and studies on the adaptability of olive trees varieties in the States are required. One of the problems that can hamper the development of olive trees is the incidence of pests, such as scale insects (Hemiptera, Coccomorpha). In this study, the associated scale insect species were found in ten varieties in an olive grove located at the Research Center of the Serra do Sudeste Region (30º33'15"S, 52º23'45"W) in Brazil. The surveys were carried out twice in each season (2013-2014)...
October 18, 2018: Anais da Academia Brasileira de Ciências
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