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Aluminum accumulation in two Pfaffia glomerata genotypes and its growth effects Ciência Rural
Maldaner,Joseila; Nicoloso,Fernando Teixeira; Tabaldi,Luciane Almeri; Cargnelutti,Denise; Skrebsky,Etiane Caldeira; Rauber,Renata; Gonçalves,Jamile Fabbrin; Rossato,Liana Verônica.
Aluminum (Al) toxicity is a limiting factor for crop production in acid soils, which cover approximately 60% of the Brazilian territory. This study aimed to evaluate the effects of Al on growth and tissue Al concentration of two Pfaffia glomerata accessions (BRA and JB/UFSM). Plantlets were grown in a hydroponic system with five Al concentrations (0, 50, 100, 150 and 200mg L-1) for 7 days. Most of the evaluated parameters presented significant interaction between both P. glomerata accessions and Al levels in nutrient solution and, in general, Al treatments negatively affected plant growth, especially roots. Moreover, BRA accession showed higher Al accumulation in its tissues than JB/UFSM and, consequently in BRA accession the growth was impaired...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazilian Ginseng; Acid soils; Al toxicity..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000601013
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Aluminum stress tolerance in potato genotypes grown with silicon Bragantia
Dorneles,Athos Odin Severo; Pereira,Aline Soares; Sasso,Victória Martini; Possebom,Gessieli; Tarouco,Camila Peligrinotti; Schorr,Márcio Renan Weber; Rossato,Liana; Ferreira,Paulo Ademar Avela; Tabaldi,Luciane Almeri.
ABSTRACT Potato cultivation is widespread around the world, being exposed to several abiotic stresses, including soils with high aluminum (Al) availability. Silicon (Si) is recognized for alleviating the stress caused by Al in various plant species. Thus, the aim of this study was to investigate the potential of Si to mitigate the oxidative stress caused by Al in potato genotypes, exhibiting differential sensitivity toward this element. Plants of the Al-sensitive genotype (SMIJ319-7) and Al-tolerant genotype (SMIF212-3) were grown for two weeks in a hydroponic system with the nutrient solution containing combinations of Al (0 and 1.85 mM) and Si (0, 0.5 and 1.0 mM). At the end of the experiment, photosynthetic parameters, pigment content, root and shoot...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum tuberosum; Beneficial elements; Enzyme activity; Oxidative stress; Toxic elements.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100012
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Cover crops and their effects on the biomass yield of Serjania marginata plants Ciência Rural
Tabaldi,Luciane Almeri; Vieira,Maria do Carmo; Zárate,Nestor Antonio Heredia; Silva,Luan Ramos da; Gonçalves,Wander Luiz Farias; Pilecco,Márcio; Formagio,Anelise Samara Nazari; Gassi,Rosimeire Pereira; Padovan,Milton Parron.
The use of cover crops can reduce or even eliminate the use of nitrogenous fertilizers, contributing to a more sustainable agriculture and ensuring the conservation of natural resources. Thus, the aim of this research was to evaluate the use of cover crops to improve the biomass yield of Serjania marginata plants. The experiment was carried out at the Federal University of Grande Dourados, in Dourados-MS, from December 2009 to February 2011. A split plot design was used in a randomized block design with four replications, being evaluated in plots three species of tropical legumes (Stizolobium aterrimum, Crotalaria spectabilis and Canavalia ensiformes, and one control plot (without cover crops), and in subplots the addition or not of nitrogen (N) (at 150...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sapindaceae; Timbó; Stizolobium aterrimum; Crotalaria spectabilis; Canavalia ensiformes.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000400006
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Crescimento in vitro de plântulas de batata em diferentes doses de cádmio Ciência Rural
Gonçalves,Jamile Fabbrin; Maldaner,Joseila; Rossato,Liana Veronica; Tabaldi,Luciane Almeri; Skrebsky,Etiane Caldeira; Farias,Júlia Gomes; Bisognin,Dilson Antônio; Nicoloso,Fernando Teixeira.
Devido, principalmente, às ações antropogênicas, tais como industrialização e uso de insumos na agricultura, os níveis de cádmio têm aumentado em muitos solos agrícolas. O presente trabalho objetivou caracterizar o efeito desse metal no crescimento in vitro de duas cultivares de batata, 'Asterix' e 'Macaca'. Segmentos nodais de plantas previamente estabelecidas in vitro foram submetidos a doses de cádmio de 0 (controle), 100, 200, 300, 400 e 500µM em meio de cultivo MS. Avaliou-se o número de raízes aos 15 dias após a inoculação (DAI) dos explantes, o comprimento das raízes e da parte aérea, o número de segmentos nodais e de folhas e a matéria fresca e seca das raízes e da parte aérea aos 22DAI. O cádmio afetou negativamente o crescimento das duas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum tuberosum; Metal pesado; Clones; Toxicidade.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000900038
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Espaçamentos entre plantas e cobertura do solo com cama-de-frango na produção de ervilhas Bragantia
Zárate,Néstor Antonio Heredia; Gassi,Rosimeire Pereira; Vieira,Maria do Carmo; Tabaldi,Luciane Almeri; Torales,Elissandra Pacito; Faccin,Fabiane Cargnin.
O presente trabalho teve por objetivo avaliar a produção agroeconômica da ervilha Luciana n.º 50, cultivada sob três espaçamentos entre plantas (5,0; 7,5 e 10,0 cm), com e sem cobertura do solo com cama-de-frango. Os tratamentos foram arranjados como fatorial 3x2, no delineamento experimental de blocos casualizados, com cinco repetições. As maiores massas frescas (8,33 t ha-1) e secas (2,02 t ha-1) da parte aérea foram das plantas cultivadas sob espaçamento de 7,5 cm e as menores (7,87 t ha-1 e 1,82 t ha-1) foram daquelas sob 10,0 cm. A maior massa fresca de vagem comercial (3,08 t ha-1) foi das plantas cultivadas sob espaçamento de 5,0 cm, superando em 0,33 t ha-1 àquelas sob 7,5 cm, que foi a menor. A produção de massa fresca de vagens comerciais das...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pisum sativum; População de plantas; Resíduo orgânico; Renda bruta e líquida.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000100007
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Foliar copper uptake by maize plants: effects on growth and yield Ciência Rural
Barbosa,Rogério Hidalgo; Tabaldi,Luciane Almeri; Miyazaki,Fábio Rodrigo; Pilecco,Márcio; Kassab,Samir Oliveira; Bigaton,Daísa.
A slight increase in the levels of a certain nutrient can cause a significant increase in crop yield or can cause phytotoxicity symptoms. Thus, the aim of this study was to evaluate the effect of foliar application of copper (Cu) on the growth and yield of DG-501 maize. The experiment was carried out between December 2009 and April 2010 in conventional tillage. When plants were with six to eight leaves, Cu (0, 100, 200, 300, 400, 500 and 600g ha-1) was applied to the leaves. Treatments were arranged in randomized complete block with five replications. When 50% of the plants were in flowering, it was evaluated the plant height, culm diameter, height of the first ear insertion, leaf area, and chlorophyll content. At harvest, it was evaluated diameter and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fertilization; Micronutrient; Toxicity; Zea mays.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000900005
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Micronutrient concentration in potato clones with distinct physiological sensitivity to Al stress Ciência Rural
Tabaldi,Luciane Almeri; Castro,Gabriel Y; Cargnelutti,Denise; Skrebsky,Etiane Caldeira; Gonçalves,Jamile Fabbrin; Rauber,Renata; Rossato,Liana; Schetinger,Maria Rosa Chitolina; Bisognin,Dílson Antônio; Nicoloso,Fernando Teixeira.
The objective of this study was to evaluate the effects of aluminum (Al) on the zinc (Zn), manganese (Mn), iron (Fe) and copper (Cu) concentrations in four potato clones (Macaca and Dakota Rose: both Al-sensitive clones; and SMIC148-A and Solanum microdontum: both Al-tolerant-clones), grown in a nutrient solution (pH 4.00) with 0, 50, 100, 150 and 200mg Al L-1. Root Zn and Fe concentrations decreased linearly with the increase of Al levels in Macaca, SMIC148-A and Dakota Rose and increased linearly in S. microdontum. Shoot Zn concentration showed a quadratic relationship with Al in S. microdontum and SMIC148-A, but a curvilinear response in Dakota Rose. Shoot Fe concentration showed a quadratic relationship with Al in S. microdontum, SMIC148-A and Dakota...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum tuberosum; Solanum microdontum; Zinc; Manganese; Iron; Copper.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000200010
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NTPDase and acetylcholinesterase activities in silver catfish, Rhamdia quelen (Quoy & Gaimard, 1824) (Heptapteridae) exposed to interaction of oxygen and ammonia levels Neotropical Ichthyology
Kaizer,Rosilene Rodrigues; Loro,Vania Lúcia; Schetinger,Maria Rosa Chitolina; Morsch,Vera Maria; Tabaldi,Luciane Almeri; Rosa,Cíntia Saydelles da; Garcia,Luciano de Oliveira; Becker,Alexssandro G.; Baldisserotto,Bernardo.
The effects of various levels of oxygen saturation and ammonia concentration on NTPDase (ecto-nucleoside triphosphate diphosphohydrolase, E.C. 3.6.1.5) and acetylcholinesterase (AChE, E.C. 3.1.1.7) activities in whole brain of teleost fish (Rhamdia quelen) were investigated. The fish were exposed to one of two different dissolved oxygen levels, including high oxygen (6.5 mg.L-1) or low oxygen (3.5 mg.L-1), and one of two different ammonia levels, including high ammonia (0.1 mg.L-1) or low ammonia (0.03 mg.L-1) levels. The four experimental groups included the following (A) control, or high dissolved oxygen plus low NH3; (B) low dissolved oxygen plus low NH3; (C) high dissolved oxygen plus high NH3; (D) low dissolved oxygen plus high NH3. We found that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; ATP; ADP; AChE.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400012
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Presence of multiple acid phosphatases activity in seedlings of cucumber, radish and rocket salad Ciência Rural
Tabaldi,Luciane Almeri; Ruppenthal,Raquel; Pereira,Luciane Belmonte; Cargnelutti,Denise; Gonçalves,Jamile Fabbrin; Morsch,Vera Maria; Schetinger,Maria Rosa Chitolina.
Acid phosphatases (3.1.3.2) are a group of enzymes widely distributed in nature, which catalyze the hydrolysis of a variety of phosphate esters in the pH range of 4-6. We confirmed the presence of acid phosphatases in seedlings of cucumber (Cucumis sativus), radish (Raphanus sativus) and rocket salad (Eruca vesicaria) under different assay conditions using a rapid and simple preparation. The results showed that the optimum pH and temperature used for all species were close to 5.5 and 35°C, respectively. The enzyme was inhibited by molybdate, fluoride, azide, levamisole, orthovanadate, Zn2+ and Cu2+. Suramin had no effect on enzyme activity. The acid phosphatase from cucumber, radish and rocket salad hydrolyzed a wide variety of phosphate esters and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cucumis sativus; Raphanus sativus; Eruca vesicaria; Phosphatases.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000300009
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Silicon reduces aluminum content in tissues and ameliorates its toxic effects on potato plant growth Ciência Rural
Dorneles,Athos Odin Severo; Pereira,Aline Soares; Rossato,Liana Verônica; Possebom,Gessieli; Sasso,Victória Martini; Bernardy,Katieli; Sandri,Ruziele de Quadros; Nicoloso,Fernando Teixeira; Ferreira,Paulo Ademar Avelar; Tabaldi,Luciane Almeri.
ABSTRACT: Aluminum (Al) is highly toxic to plants, causing stress and inhibiting growth and silicon (Si) is considered beneficial for plants. This chemical element has a high affinity with Al. The aim of this study was to investigate the potential of Si to mitigate the toxic effects of Al on potato ( Solanum tuberosum L.) plants and assess whether this behavior is different among genotypes with differing degrees of sensitivity to Al. Potato plants of the genotypes SMIJ319-7 (Al-sensitive) and SMIF212-3 (Al-tolerant) were grown for fourteen days in nutrient solution (without P and pH 4.5±0.1) under exposure to combinations of Al (0 and 1.85mM) and Si (0, 0.5 and 1.0mM). After this period, shoot and roots of the two genotypes were collected to determine Al...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum tuberosum; Beneficial element; Toxic element; Interaction.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000300506
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